Vacuum exhaust device

Abstract

The utility model discloses a vacuum exhaust device which comprises a shell with a containing space, a first claw body and a second claw body are arranged in the containing space of the shell, the first claw body and the second claw body are symmetrical about the center line of the shell, the first claw body and the second claw body are respectively provided with a rotating shaft, and the rotating shafts are connected with the first claw body and the second claw body. Therefore, the first claw body and the second claw body are controlled to rotate around respective center lines, and air in the experiment box is absorbed through the air inlet pipe and then exhausted from the exhaust pipe. According to the utility model, the claw type vacuum pump composed of the two S-shaped claw bodies is adopted to extract air, air in the experiment box is extracted to form a vacuum environment, and compared with the mode of extracting air by adopting an air extractor, the mode of extracting air by adopting the claw type vacuum pump is lower in noise and less in influence on the outside.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of vacuum exhaust, especially a vacuum exhaust device. BACKGROUND

[0002] In the process of carrying out the experiment needing the vacuum environment, the air in the experiment box is exhausted by the vacuum exhaust to create the vacuum environment, so that the experiment and observation are carried out in the vacuum environment. The existing vacuum exhaust device mostly uses the air extractor to exhaust the air in the experiment box to create the vacuum environment, which can cause the problems of large noise during air extraction and large space occupied by the air extractor, which not only can affect the outside world because of the noise, but also can cause the air extraction device difficult to move and the use range limited. Therefore, it is necessary to improve and optimize the vacuum exhaust device. SUMMARY

[0003] The utility model aims at providing a kind of vacuum exhaust device, to solve the problem of too large noise affecting outside world, device is too large and use range is limited.

[0004] The utility model mainly provides a kind of vacuum exhaust device, the vacuum exhaust device includes the casing with containing space, the containing space of the casing is provided with first claw body and second claw body, the first claw body and second claw body are symmetrical about the center line of casing, the first claw body and second claw body are respectively provided with rotating shaft, to control the first claw body and second claw body respectively rotate about respective center line, air in experiment box is absorbed again from exhaust pipe and is discharged from exhaust pipe.

[0005] Further technology of the utility model:

[0006] Preferably, the casing includes shell bottom, fence and shell top, the arc-shaped fixed frame is provided on the shell bottom to surround the first claw body and the second claw body, the first claw body and the second claw body are respectively arranged with the arc-shaped fixed frame, the air inlet pipe is provided on the outer side of the fence, one end of the air inlet pipe extends into the casing containing space and passes through the arc-shaped fixed frame, so that air is transported into the first claw body and the second claw body, the other end of the air inlet pipe is provided with connecting piece, so as to connect the experiment box.

[0007] Preferably, the top of the shell top is provided with a gas distribution cover plate, the central part of the gas distribution cover plate is provided with a through hole, a plurality of heat dissipation holes are arranged on the gas distribution cover plate, a cover plate is arranged on the gas distribution cover plate, the central part of the cover plate is provided with an exhaust hole corresponding to the through hole, and an exhaust pipe is arranged on the exhaust hole.

[0008] Preferably, the first claw body comprises a first rotating shaft, the second claw body comprises a second rotating shaft, one end of the first rotating shaft and the second rotating shaft extends out of the bottom of the shell bottom and is connected with the driving device on the power unit, and the power unit is provided with a power switch, so as to provide power for the driving device.

[0009] Preferably, the first claw body and the second claw body are S-shaped, and the first claw body and the second claw body are driven to rotate in different directions by the driving device, and a cavity is formed in the center of the first claw body and the second claw body during rotation, so that the air absorbed in the air inlet pipe is discharged from the air outlet pipe.

[0010] Preferably, the first claw body and the second claw body are respectively provided with a first connecting port and a second connecting port, the first connecting port is provided with a first annular fixing part, the second connecting port is provided with a second annular fixing part, the inner side of the first annular fixing part and the second annular fixing part is respectively provided with a first latch and a second latch, the first connecting port is inserted with a first rotating shaft, the second connecting port is inserted with a second rotating shaft, one end of the first rotating shaft is provided with a first annular port, one end of the second rotating shaft is provided with a second annular port, the inner side of the first annular port and the second annular port is respectively provided with a first threaded groove and a second threaded groove, the outer side of the first annular port and the second annular port is respectively provided with a first groove and a second groove, by inserting the first latch into the first groove and the second latch into the second groove, the first rotating shaft is fixed in the first claw body, and the second rotating shaft is fixed in the second claw body.

[0011] Preferably, the first connecting port and the second connecting port are respectively provided with a screw, and the bottom of the screw is connected with the first threaded groove and the second threaded groove through the first annular fixing part and the second annular fixing part.

[0012] Preferably, the top of the experimental box is provided with a third connecting port, and a connecting piece is inserted into the third connecting port, so that the air in the experimental box is input into the air inlet pipe.

[0013] Preferably, the outer side of the experimental box is provided with two operation ports, so as to facilitate manual experimental operation.

[0014] The beneficial effects of the utility model are:

[0015] The utility model adopts the mode that two S-shaped claw bodies form claw type vacuum pump to carry out air extraction, and the gas in the experimental box is extracted to form a vacuum environment, compared with the mode that an air extractor is used for extraction, the mode that the claw type vacuum pump is used for air extraction has smaller noise and less influence on the outside world.

[0016] The vacuum exhaust device of the claw type vacuum pump is composed of two S-shaped claw bodies, and has the advantages of smaller space occupation, more convenient transportation and more application occasions compared with an air extractor.

[0017] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 Structure diagram of the vacuum exhaust device of the present application;

[0019] Figure 2 Structure diagram of the vacuum exhaust device of the present application without cover;

[0020] Figure 3 Structure diagram of the vacuum exhaust device of the present application without exhaust layer;

[0021] Figure 4 Structure diagram of the claw type vacuum pump system of the present application;

[0022] Figure 5 Structure diagram of the claw type vacuum pump device of the present application;

[0023] Figure 6 Structure diagram of the rotating shaft of the present application;

[0024] Figure 7 Structure diagram of the experimental box of the present application;

[0025] Figure 8 Structure diagram of the experimental box of the present application;

[0026] In the drawings: 10, shell; 101, shell bottom; 102, coaming; 103, shell top; 104, arc-shaped fixed frame; 105, air inlet pipe; 106, connecting piece; 20, first claw body; 201, first rotating shaft; 202, first connecting port; 203, first annular fixing piece; 204, first bolt; 205, first annular port; 206, first threaded groove; 207, first groove; 30, second claw body; 301, second rotating shaft; 302, second connecting port; 303, second annular fixing piece; 304, second bolt; 305, second annular port; 306, second threaded groove; 307, second groove; 40, air diffusing cover plate; 401, through hole; 402, heat dissipation hole; 50, cover plate; 501, exhaust hole; 60, exhaust pipe; 70, power unit; 701, driving device; 702, power switch; 80, screw; 90, experimental box; 901, third connecting port; 902, operation port. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be further described in detail below with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application but not all. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0028] Please refer to Figures 1-8 In the embodiment, a vacuum exhaust device is provided, which comprises a shell with a containing space, a first claw body and a second claw body are arranged in the containing space of the shell, the first claw body and the second claw body are symmetrical about the center line of the shell, rotating shafts are arranged on the first claw body and the second claw body respectively, so as to control the first claw body and the second claw body to rotate about the respective center lines respectively, and air in the experiment box is absorbed through the air inlet pipe and then discharged from the air outlet pipe.

[0029] Specifically, as shown in Figures 1-2 The shell 10 comprises a surrounding plate 102 and a shell top 103, an air inlet pipe 105 is arranged outside the surrounding plate 102 to facilitate air entering, the shell top 103 is provided with a gas dispersion cover plate 40 at the top to discharge the heat energy generated inside, the gas dispersion cover plate 40 is provided with a through hole 401 in the center, a plurality of heat dissipation holes 402 are arranged on the gas dispersion cover plate 40 to facilitate heat release, the gas dispersion cover plate 40 is provided with a cover plate 50 at the top, the cover plate 50 is provided with an air outlet hole 501, the air outlet hole 501 is provided with an air outlet pipe 60 for discharging the air absorbed by the air inlet pipe 105, and the air inlet pipe 105 is provided with a connecting piece 106.

[0030] Specifically, as shown in Figure 3 The shell 10 is provided with a first claw body 20 and a second claw body 30 in the containing space, the shell 10 comprises a shell bottom 101, the shell bottom 101 is provided with an arc-shaped fixed frame 104 for surrounding the first claw body 20 and the second claw body 30, the air inlet pipe 105 extends into the containing space of the shell 10 and passes through the arc-shaped fixed frame 104, so as to send air into the space between the first claw body 20 and the second claw body 30, and the bottom of the shell 10 is provided with a power unit 70 for providing power source for the device.

[0031] Specifically, as shown in Figures 4-6As shown, the first claw body 20 and the second claw body 30 are respectively provided with a first connecting port 202 and a second connecting port 302 in the center, the first connecting port 202 is provided with a first annular fixing part 203, the second connecting port 302 is provided with a second annular fixing part 303, the inner side of the first annular fixing part 203 and the second annular fixing part 303 is respectively provided with a first bolt 204 and a second bolt 304, the first connecting port 202 is inserted with a first rotating shaft 201, the second connecting port 302 is inserted with a second rotating shaft 301, one end of the first rotating shaft 201 is provided with a first annular port 205, one end of the second rotating shaft 301 is provided with a second annular port 305, the inner side of the first annular port 205 and the second annular port 305 is respectively provided with a first threaded groove 206 and a second threaded groove 306, the outer side of the first annular port 205 and the second annular port 305 is respectively provided with a first groove 207 and a second groove 307, by inserting the first bolt 204 into the first groove 207 and the second bolt 304 into the second groove 307, the first rotating shaft 201 is fixed in the first claw body 20, and the second rotating shaft 301 is fixed in the second claw body 30, the first rotating shaft 201 and the second rotating shaft 301 are connected with the driving device 701 of the power unit 70, the power switch 702 is arranged on the power unit 70, the driving device 701 is powered by opening the power switch 702, so as to drive the first rotating shaft 201 and the second rotating shaft 301 respectively, the first claw body 20 and the second claw body 30 rotate in different directions, so that the air absorbed by the air inlet pipe 105 is discharged from the air outlet pipe 60.

[0032] Specifically, as shown in the figure, Figures 7-8 The third connecting port 901 is connected with the connecting piece 106, so that the air inlet pipe 105 absorbs the air in the experimental box 90, and the two operation ports 902 are arranged on the experimental box 90, so as to facilitate manual experimental operation.

[0033] The vacuum exhaust device of the utility model, when the experimental detection in the vacuum environment is needed, the experimental box 90 is connected with the connecting piece 106 through the third connecting port 901, so that the air inlet pipe 105 is communicated with the inside of the experimental box 90, the power switch 702 is opened, so as to provide power source for the driving device 701, so as to drive the first rotating shaft 201 and the second rotating shaft 301 respectively, the first claw body 20 and the second claw body 30 rotate in different directions, the cavity generated in the rotating process is used for discharging the air in the experimental box 90 through the air outlet pipe 60, so as to generate the vacuum environment in the experimental box 90, and the experimental operation is carried out in the experimental box 90 through the operation port 902.

[0034] In the description of the utility model, it is necessary to explain, the term "vertical", "upper", "lower", "horizontal" and so on indicate the orientation or positional relationship is based on the orientation or positional relationship shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and is not indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the utility model.

[0035] In the description of the utility model, it is also necessary to explain that, unless otherwise expressly provided and limited, the terms "set", "mount", "connected", "connected" should be broadly understood, for example, can be fixedly connected, can also be detachably connected, or integrally connected, can be mechanically connected, can also be electrically connected, can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0036] The above content is only an example and description of the structure of the utility model, and those skilled in the art can make various modifications or supplements or adopt similar ways to replace the described specific embodiments, as long as the modifications or supplements or replacements do not deviate from the structure of the utility model or exceed the scope defined by the claims, which shall belong to the protection scope of the utility model.

Claims

1. A vacuum exhaust device for removing air from an experimental chamber (90), characterized in that, The vacuum exhaust device includes a housing (10) with a accommodating space. A first claw (20) and a second claw (30) are arranged in the accommodating space of the housing (10). The first claw (20) and the second claw (30) are symmetrical about the center line of the housing (10). The first claw (20) and the second claw (30) are respectively provided with a rotating shaft, thereby controlling the first claw (20) and the second claw (30) to rotate around their respective center lines, so as to absorb the air in the experimental chamber (90) through the air inlet pipe and then discharge it from the exhaust pipe.

2. The vacuum exhaust device according to claim 1, characterized in that, The shell (10) includes a bottom (101), a surrounding plate (102), and a top (103). An arc-shaped fixing frame (104) is provided on the bottom (101) to surround the first claw body (20) and the second claw body (30). The first claw body (20) and the second claw body (30) are respectively spaced apart from the arc-shaped fixing frame (104). An air inlet pipe (105) is provided on the outside of the surrounding plate (102). One end of the air inlet pipe (105) extends into the accommodating space of the shell (10) and passes through the arc-shaped fixing frame (104) to deliver air between the first claw body (20) and the second claw body (30). The other end of the air inlet pipe (105) is provided with a connector (106) to connect to the experimental chamber (90).

3. A vacuum exhaust device according to claim 2, characterized in that, The top of the shell (103) is provided with a venting cover plate (40), the venting cover plate (40) is provided with a through hole (401) in the center, the venting cover plate (40) is provided with a plurality of heat dissipation holes (402), the venting cover plate (40) is provided with a cover plate (50), the cover plate (50) is provided with an exhaust hole (501) corresponding to the through hole (401) in the center, and an exhaust pipe (60) is provided on the exhaust hole (501).

4. A vacuum exhaust device according to claim 2, characterized in that, The first claw body (20) includes a first rotating shaft (201), and the second claw body (30) includes a second rotating shaft (301). One end of the first rotating shaft (201) and the second rotating shaft (301) extends out of the bottom of the shell bottom (101) and is connected to the drive device (701) on the power unit (70). The power unit (70) is provided with a power switch (702) to provide power to the drive device (701).

5. A vacuum exhaust device according to claim 1, characterized in that, The first claw body (20) and the second claw body (30) are S-shaped. The first claw body (20) and the second claw body (30) are driven to rotate in different directions by the driving device (701). During the rotation, a cavity is formed in the center of the first claw body (20) and the second claw body (30), so that the air absorbed in the air intake pipe (105) is discharged from the exhaust pipe (60).

6. A vacuum exhaust device according to claim 4, characterized in that, The first claw body (20) and the second claw body (30) are respectively provided with a first connecting port (202) and a second connecting port (302) at their center. A first annular fixing member (203) is provided on the first connecting port (202), and a second annular fixing member (303) is provided on the second connecting port (302). A first pin (204) and a second pin (304) are respectively provided on the inner side of the first annular fixing member (203) and the second annular fixing member (303). A first rotating shaft (201) is inserted into the first connecting port (202), and a second rotating shaft (301) is inserted into the second connecting port (302). One end of the first rotating shaft (201) is provided with a first annular port (…). 205), one end of the second rotating shaft (301) is provided with a second annular port (305), the inner sides of the first annular port (205) and the second annular port (305) are respectively provided with a first threaded groove (206) and a second threaded groove (306), the outer sides of the first annular port (205) and the second annular port (305) are respectively provided with a first groove (207) and a second groove (307), by inserting the first pin (204) into the first groove (207) and the second pin (304) into the second groove (307), the first rotating shaft (201) is fixed in the first claw body (20), and the second rotating shaft (301) is fixed in the second claw body (30).

7. A vacuum exhaust device according to claim 6, characterized in that, Screws (80) are provided in the first connection port (202) and the second connection port (302), respectively. The bottom of the screws (80) are connected to the first threaded groove (206) and the second threaded groove (306) through the first annular fixing member (203) and the second annular fixing member (303), respectively.

8. A vacuum exhaust device according to any one of claims 1 to 7, characterized in that, The experimental chamber (90) is provided with a third connection port (901) on the top. A connector (106) is inserted into the third connection port (901) to input the air in the experimental chamber (90) into the air inlet pipe (105).

9. A vacuum exhaust device according to claim 8, characterized in that, The experimental box (90) has two operation ports (902) on its outside to facilitate manual experimental operations.

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