CN116164895B - Vacuum pump gas tightness detection device - Google Patents

Vacuum pump gas tightness detection device Download PDF

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Publication number
CN116164895B
CN116164895B CN202310457541.6A CN202310457541A CN116164895B CN 116164895 B CN116164895 B CN 116164895B CN 202310457541 A CN202310457541 A CN 202310457541A CN 116164895 B CN116164895 B CN 116164895B
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China
Prior art keywords
air
vacuum pump
cavity
detected
detection
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Active
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CN202310457541.6A
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Chinese (zh)
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CN116164895A (en
Inventor
郎嘉琪
张秀平
孙云
李晨安
李昀达
柯瑶
屈博艺
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Sinomach General Machinery Science & Technology Co ltd
Hefei General Machinery Research Institute Co Ltd
Original Assignee
HEFEI GENERAL ENVIRONMENT CONTROL TECHNOLOGY CO LTD
Hefei General Machinery Research Institute Co Ltd
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Application filed by HEFEI GENERAL ENVIRONMENT CONTROL TECHNOLOGY CO LTD, Hefei General Machinery Research Institute Co Ltd filed Critical HEFEI GENERAL ENVIRONMENT CONTROL TECHNOLOGY CO LTD
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Publication of CN116164895A publication Critical patent/CN116164895A/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/06—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B51/00—Testing machines, pumps, or pumping installations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Drying Of Solid Materials (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

The invention is suitable for the field of vacuum pump detection, and provides a vacuum pump air tightness detection device, which comprises a detection box main body, wherein a detection water cavity is arranged at the bottom end of the detection box main body, and a drying mechanism is arranged at the top end of the detection box main body; a supporting rotary disc is arranged on one side of the detection box main body, the supporting rotary disc is used for fixing the vacuum pump to be detected, and the supporting rotary disc rotates to drive the vacuum pump to be detected to enter a detection water cavity or enter a drying mechanism; and an air inflation cavity is arranged between the support turntable and the fixed ring cover, is connected with the vacuum pump to be inspected through an air inflation pipe and inflates the vacuum pump to be inspected. According to the air tightness detection device provided by the invention, the air tightness detection efficiency is improved by adopting the arrangement of the plurality of groups of clamping mechanisms on the supporting turntable, wherein the air inlet valve is conducted only for the vacuum pump to be detected positioned below the liquid level, the design is ingenious, and a dynamic single-conduction air source is provided for multi-station air tightness detection, so that the use effect is good.

Description

Vacuum pump gas tightness detection device
Technical Field
The invention belongs to the technical field of vacuum pump detection, and particularly relates to a vacuum pump air tightness detection device.
Background
In the assembly process of the vacuum pump, parts in the pump body and the pump cover are installed, and the air tightness of the vacuum pump is required to be detected after the pump body and the pump cover are installed.
Disclosed in the patent document with publication number CN217520670U is a civil air defense door air tightness detecting device, comprising: the top is the open water tank that sets up and the detection case that is used for accepting the people's air defense door of sliding connection in the water tank, be connected with intake pipe and blast pipe on the detection case, all be equipped with first valve on intake pipe and the blast pipe, the intake pipe is linked together with the air supply, be equipped with on the water tank and be used for driving the gliding drive assembly of detection case, install people's air defense door in detection case top, people's air defense door and detection case are a inclosed space, will detect the case and descend to in the water tank through drive assembly, aerify in the detection case, confirm the gas leakage point through observing the position of bubble.
Patent document CN215414229U discloses a vacuum pump air tightness detecting device, which comprises a detecting mechanism and a moving mechanism. The detection mechanism comprises a support, a first support plate, a detection box and an inflation assembly, wherein the number of the first support plates is two, the two first support plates are connected to one side of the support, the detection box is mounted on one side of the support, and the inflation assembly is connected to one side of the detection box.
The patent document with the publication number of CN213579950U discloses a vacuum pump air tightness detection device, which comprises a connecting hose, a stainless steel tank body and a water container; the air outlet of the vacuum pump is introduced into the water container, and whether the vacuum pump leaks air is judged according to the air bubble generation condition.
Among the airtight detection mode of vacuum pump that above-mentioned scheme provided, only adopt the vacuum pump to the airtight detection in the aquatic, inflate the vacuum pump in order to observe whether there is the bubble in the aquatic and realize the airtight detection to the vacuum pump, structural function is comparatively single, and above-mentioned scheme also can't in time clear up the water on vacuum pump surface, influences the packing of the follow-up finished product of vacuum pump, leads to the vacuum pump gas tightness detection efficiency lower.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides a vacuum pump air tightness detection device.
The technical scheme provided by the invention is as follows.
The vacuum pump air tightness detection device comprises a detection box main body, wherein a detection water cavity for containing water body is arranged at the bottom end of the inside of the detection box main body, a drying mechanism with a drying cavity is arranged above the detection water cavity, and an observation window matched with the position of the detection water cavity is also arranged on the detection box main body; one side of the detection box main body is provided with a supporting rotary table, one side of the supporting rotary table, which is close to the detection box main body, is fixed with a vacuum pump to be detected through a clamping mechanism, the supporting rotary table is connected with a driving motor, and the driving motor drives the supporting rotary table to rotate, so that the vacuum pump to be detected is driven to enter the water body of the detection water cavity or enter a drying cavity of the drying mechanism;
the support turntable is far away from the detection box main body one side and is also connected with a fixed ring cover, the fixed ring cover is connected with an air charging device and forms an air charging cavity with the support turntable, the air charging cavity is connected with a vacuum pump to be detected through an air charging pipe which is arranged corresponding to the clamping mechanism, and when the vacuum pump to be detected moves into the water body of the detection water cavity, the air charging cavity is filled in the vacuum pump to be detected.
Preferably, the supporting turntable is provided with at least one clamping mechanism, each clamping mechanism is correspondingly fixed with a vacuum pump to be detected, and the number of the inflation tubes is matched with the number of the clamping mechanisms.
Preferably, the drying mechanism comprises a hot air blower, and the hot air blower comprises an air pump and an electric heating net arranged at an outlet of the air pump and is used for outputting hot air.
Preferably, the drying mechanism further comprises a gas homogenizing disc, wherein the gas homogenizing disc is rotatably arranged in the drying mechanism and divides the interior of the drying mechanism into an air cavity and a drying cavity;
preferably, the air heater is arranged at the air cavity side, the air blowing component is arranged on the air homogenizing disc, the air homogenizing disc is connected with the air homogenizing motor, and the air homogenizing motor drives the air homogenizing disc to rotate so as to uniformly send hot air at the air cavity side into the drying cavity through the air blowing component.
Preferably, the blowing assembly comprises a hot air pipe and a blowing nozzle, wherein the hot air pipe is perpendicular to the air homogenizing disc and arranged in the drying cavity, one end of the hot air pipe is connected with the air cavity, the blowing nozzle is uniformly distributed on one side, close to the drying cavity, of the hot air pipe, and hot air in the air cavity is fed into the drying cavity in an air outlet direction perpendicular to the air homogenizing disc.
Preferably, the air outlet end of the air charging pipe is connected with the air inlet of the vacuum pump to be detected through a first connector, the air inlet end of the air charging pipe is communicated with the air charging cavity through a second connector, and the second connector is fixedly connected with an air inlet valve.
Preferably, the air inlet valve comprises an air inlet rotary drum which is inserted into the second connector in a rotary sealing manner, an inner vent hole is formed in the air inlet rotary drum, an outer vent hole matched with the inner vent hole is formed in the second connector, and when the inner vent hole and the outer vent hole are mutually aligned, air flow in the air inflation cavity can enter the vacuum pump to be detected through the air inflation pipe.
Preferably, an arc-shaped rack is fixedly arranged on the inner wall of the bottom of the fixed ring cover, a support gear meshed with the arc-shaped rack is further arranged at the tail end of the air inlet rotary drum, and when the support rotary table rotates to the position that the vacuum pump to be detected enters the water body of the detection water cavity, the support gear is meshed with the arc-shaped rack to enable the outer vent hole to be communicated with the inner vent hole; otherwise, the outer vent and the inner vent are in a dislocation state.
Preferably, the clamping mechanism comprises a fixed clamping frame and a movable clamping frame, wherein the fixed clamping frame comprises a guide supporting rod, the guide supporting rod is perpendicular to the supporting turntable and fixedly connected with the supporting turntable, the movable clamping frame comprises at least one group of arc clamps, and the arc clamps clamp the vacuum pump to be detected and are connected with the fixed clamping frame.
Preferably, each arc-shaped clamp is fixedly provided with a top seat, and the same group of arc-shaped clamps are connected with each other through a connecting support rod to be fixedly connected with each other; the arc clamp is characterized in that the end part of the arc clamp is provided with a supporting leg with a screw hole, and the arc clamp is fixedly connected with the fixed clamping frame through the supporting leg to form a bolt.
The invention has the beneficial effects that:
compared with the prior art, the air tightness detection device provided by the invention has the advantages that the air inflation device is used for inflating the fixed ring cover, the air inlet valve in the on state is further used for enabling air to be inflated into the corresponding vacuum pump to be detected through the air inflation pipe, the vacuum pump to be detected corresponding to the air inlet valve in the on state is positioned below the liquid level in the detection water cavity, and whether the air tightness of the current vacuum pump to be detected is problematic or not can be determined by observing whether air bubbles exist in water in the detection water cavity through the observation window when the vacuum pump to be detected is inflated. After the air tightness of the vacuum pump to be detected, which is positioned below the liquid level of the detection water cavity, is detected, the supporting turntable is rotated, the detected vacuum pump to be detected is conveyed into the drying cavity, and the surface drying treatment is carried out on the vacuum pump to be detected in the drying cavity through the drying mechanism.
The drying mechanism is provided with the air homogenizing disc and the hot air pipe, hot air flow can be provided for the vacuum pump to be detected from at least two directions, the heating uniformity of the surface of the vacuum pump is ensured, the safety is ensured, and the drying efficiency is improved.
In addition, the air tightness detection device provided by the invention adopts the arrangement of the plurality of groups of clamping mechanisms on the supporting turntable, so that the air tightness detection efficiency is improved, wherein the air inlet valve is only conducted for the vacuum pump to be detected positioned below the liquid level, the design is ingenious, and a dynamic single-conduction air source is provided for multi-station air tightness detection, so that the use effect is good.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following description will briefly introduce the drawings that are needed in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only some embodiments of the present invention.
FIG. 1 is a schematic diagram of a vacuum pump air tightness detection device;
fig. 2 is a schematic structural diagram of a transfer mechanism in the air tightness detection device provided by the invention;
FIG. 3 is a schematic view of a partial enlarged structure at A in FIG. 2;
fig. 4 is a schematic view of a partial perspective structure of an air inlet valve in the air tightness detecting device provided by the invention;
fig. 5 is a schematic structural diagram of a clamping frame in the air tightness detection device provided by the invention;
FIG. 6 is a schematic structural view of a fixing ring cover in the air tightness detecting device provided by the invention;
fig. 7 is a schematic diagram of an internal structure of an oven in the air tightness detection device provided by the invention.
In fig. 1-7:
100-detecting box main body; 101-a taking window; 102-detecting the water cavity;
200-a drying mechanism; 201-air cavity; 202-baking cavity; 203-a gas homogenizing disc; 204-an air pump; 205-an electric heating net; 206, homogenizing the gas; 207-hot air pipe; 208-blowing nozzle;
300-a water tank; 400-fixing the ring cover;
401-driving a motor; 402-arc rack;
500-supporting a turntable; 501-a sealing ring;
600-an inflator;
700-an inflation tube; 701-a first linker; 702-a second joint; 7021-an external vent;
800-a vacuum pump to be detected; 801-a fixed clamping frame; 802-a movable clamping frame; 8021-arc clips; 8022-feet; 8023-footstock; 8024-connecting struts; 8025-a receiving chamber; 803-guiding struts;
900-an air inlet drum; 901-support gear; 902-inner vent.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to fig. 1 to 7 and the embodiments of the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Specific implementations of the invention are described in detail below in connection with specific embodiments.
Example 1
A vacuum pump air tightness detection device, the said air tightness detection device includes:
the detection box comprises a detection box body 100 and a fixed ring cover 400 fixedly installed on the outer side plate of the detection box body 100, wherein an opening of the fixed ring cover 400 is communicated with the detection box body 100, a sealing ring 501 is arranged at the opening of the fixed ring cover 400 in a sealing and rotating mode, the sealing ring 501 is installed on a supporting rotary table 500 in a coaxial and fixed connection mode, and the fixed ring cover 400 is connected with an inflating device 600 and forms an inflating cavity with the supporting rotary table 500 through the sealing ring 501.
The supporting turntable 500 is provided with at least two groups of clamping mechanisms on one side of the inside of the detection box main body 100, and the clamping mechanisms are used for clamping and fixing the vacuum pump 800 to be detected. The air inflation cavity is connected with the vacuum pump 800 to be inspected through an air inflation tube 700 which is arranged corresponding to the clamping mechanism. One end, namely an air outlet end, of the air inflation tube 700 is connected with an air inlet of the vacuum pump 800 to be inspected through a first connector 701, and the other end, namely an air inlet end, of the air inflation tube 700 extends into the air inflation cavity in a penetrating manner and is fixedly connected with an air inlet valve through a second connector 702.
Further, the supporting turntable 500 is connected with the driving motor 401, and the supporting turntable 500 is driven to rotate by the driving motor 401. The driving motor 401 is mounted on the fixed ring cover 400, and an output shaft of the driving motor 401 is coaxially connected with the sealing ring 501.
The detection box main body 100 of the invention is provided with a detection water cavity 102 for containing water body at the inner bottom end. The bottom end of the supporting turntable 500 extends into the detection water cavity 102, and when the supporting turntable 500 rotates and drives the clamping mechanism to move to the bottom of the detection box main body 100, the vacuum pump 800 to be detected on the clamping mechanism is below the liquid level in the detection water cavity 102.
Therefore, in the air tightness detection device provided by the invention, the air filling device 600 is used for filling air into the air filling cavity in the fixed ring cover 400, and the air is further filled into the corresponding vacuum pump 800 to be detected from the air filling cavity through the air filling pipe 700 by the air inlet valve. At this time, when the vacuum pump 800 to be inspected is located below the water level in the water cavity 102, by inflating the vacuum pump 800 to be inspected, the air tightness of the vacuum pump 800 to be inspected can be determined by observing whether there is an air bubble in the water cavity 102, if there is an air bubble, the air tightness is indicated to be defective, and if there is no air bubble, the air tightness of the vacuum pump 800 to be inspected is indicated to be not defective.
Further, in this embodiment, a water tank 300 is further disposed at one side of the detection tank main body 100, and the bottom of the water tank 300 is communicated with the detection water cavity 102, so that the liquid level of water in the water tank 300 is flush with the liquid level in the detection water cavity 102 by using the principle of a communicating vessel, and when water shortage in the water cavity 102 is detected, water can be replenished into the water tank 300.
Further, in the detection box main body 100 of the present invention, a drying mechanism 200 with a drying chamber 202 is further disposed above the detection water chamber 102, and in this embodiment, the drying mechanism 200 is disposed at the top end of the detection box main body 100.
The top of the supporting turntable 500 extends into the drying chamber 202, so that after the air tightness of the vacuum pump 800 to be detected located below the liquid level of the detection water chamber 102 is detected, the clamping mechanism on the supporting turntable 500 can be moved into the drying chamber 202 by rotating the supporting turntable 500, that is, the detected vacuum pump 800 to be detected is conveyed into the drying chamber 202, and then the surface drying treatment is performed on the vacuum pump 800 to be detected in the drying chamber 202 by the drying mechanism.
In this embodiment, the clamping mechanism includes a fixed clamping frame 801 and a movable clamping frame 802, where the fixed clamping frame 801 includes a guiding strut 803, the guiding strut 803 is perpendicular to the supporting turntable 500 and is fixedly connected to the supporting turntable 500, and the movable clamping frame 802 includes at least one set of arc-shaped clamps 8021, and the arc-shaped clamps 8021 clamp the vacuum pump 800 to be inspected and are connected to the fixed clamping frame 801.
Each arc-shaped clamp 8021 is fixedly provided with a top seat 8023, and the arc-shaped clamps 8021 in the same group are connected with each other through a connecting support rod 8024 to be fixedly connected with each other top seat 8023; the end of the arc-shaped clamp 8021 is provided with a supporting leg 8022 with a screw hole, and the arc-shaped clamp 8021 is fixedly connected with the fixing clamping frame 801 through the supporting leg 8022 through a bolt.
Example 2
Based on embodiment 1, the air inlet valve comprises an air inlet rotary drum 900 which is inserted into the second joint 702 in a rotary sealing manner, an inner vent hole 902 is formed in the air inlet rotary drum 900, and an outer vent hole 7021 matched with the inner vent hole 902 is formed in the second joint 702.
When the clamping mechanism on the supporting turntable 500 moves to the bottom, the inner vent hole 902 and the outer vent hole 7021 are in a mutually aligned state, and when the vacuum pump 800 to be detected on the clamping mechanism is below the liquid level in the detection water cavity 102, the air flow in the air inflation cavity can enter the vacuum pump 800 to be detected through the air inflation pipe 700. Otherwise, the outer vent 7021 and the inner vent 902 are in a dislocated state, and the air-filling cavity stops introducing air into the vacuum pump 800 to be inspected.
Further, an arc-shaped rack 402 is fixedly arranged on the inner wall of the bottom of the fixed ring cover 400, and a support gear 901 meshed with the arc-shaped rack 402 is further arranged at the tail end of the air inlet rotary drum 900. When the support turntable 500 rotates to the point that the vacuum pump 800 to be inspected enters the water body of the detection water cavity 102, the support gear 901 and the arc-shaped rack 402 are meshed with each other, so that the outer vent 7021 is communicated with the inner vent 902; otherwise, the outer vent 7021 and the inner vent 902 are completely misaligned.
It should be noted that the above engagement is a dynamic process, so when the support gear 901 rotates and engages with the arc-shaped rack 402, the outer vent 7021 and the inner vent 902 are gradually connected, and at this time, inflation can be performed, and only when the support gear 901 is separated from the arc-shaped rack 402, the outer vent 7021 and the inner vent 902 are completely dislocated, and inflation is stopped.
Example 3
Based on embodiment 1 or embodiment 2, in the present invention, the drying mechanism 200 includes a hot air blower, the hot air blower includes an air pump 204 and an electric heating net 205 disposed at a conducting position between an air outlet of the air pump 204 and the air cavity 201, and the air flow entering the air cavity 201 is heated by the electric heating net 205 to output hot air.
The drying mechanism 200 further comprises a gas homogenizing disc 203, wherein the gas homogenizing disc 203 is rotatably arranged inside the drying mechanism 200 and divides the inside of the drying mechanism 200 into an air cavity 201 and a drying cavity 202. Wherein the air heater is arranged at the air cavity 201 side, and the air homogenizing disc 203 is provided with an air blowing component, so that hot air at the air cavity 201 side is uniformly sent into the drying cavity 202 through the air blowing component.
Further, the air homogenizing disc 203 is connected to the air homogenizing motor 206, an output shaft of the air homogenizing motor 206 is coaxially connected to the air homogenizing disc 203, and the air homogenizing motor 206 drives the air homogenizing disc 203 to rotate, so that the air blowing assembly rotates around the vacuum pump 800 to be detected, and the omnibearing drying treatment of the vacuum pump 800 to be detected is realized.
The blowing assembly comprises a hot air pipe 207 and a blowing nozzle 208, wherein the hot air pipe 207 is perpendicular to the air homogenizing disc 203 and arranged in the drying cavity 202, one end of the hot air pipe 207 is connected with the air cavity 201, the blowing nozzle 208 is uniformly distributed on one side of the hot air pipe 207, which is close to the drying cavity 202, and hot air in the air cavity 201 is fed into the drying cavity 202 in an air outlet direction perpendicular to the air homogenizing disc 203.
The above embodiments are merely illustrative of a preferred embodiment, but are not limited thereto. In practicing the present invention, appropriate substitutions and/or modifications may be made according to the needs of the user.
The number of equipment and the scale of processing described herein are intended to simplify the description of the present invention. Applications, modifications and variations of the present invention will be readily apparent to those skilled in the art.
Although embodiments of the invention have been disclosed above, they are not limited to the use listed in the specification and embodiments. It can be applied to various fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. Therefore, the invention is not to be limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.

Claims (7)

1. The vacuum pump air tightness detection device is characterized by comprising a detection box main body (100), wherein a detection water cavity (102) for containing water body is arranged at the inner bottom end of the detection box main body (100), a drying mechanism (200) with a drying cavity (203) is arranged above the detection water cavity (102), and an observation window matched with the position of the detection water cavity is also arranged on the detection box main body; a supporting rotary table (500) is arranged on one side of the detection box main body (100), a vacuum pump (800) to be detected is fixed on one side of the supporting rotary table (500) close to the detection box main body (100) through a clamping mechanism, the supporting rotary table (500) is connected with a driving motor (401), and the supporting rotary table (500) is driven to rotate by the driving motor (401), so that the vacuum pump (800) to be detected is driven to enter the water body of the detection water cavity (102) or enter a drying cavity (203) of the drying mechanism (200);
the side, far away from the detection box main body (100), of the supporting rotary table (500) is also connected with a fixed ring cover (400), the fixed ring cover (400) is connected with an air charging device (600) and forms an air charging cavity with the supporting rotary table (500), the air charging cavity is connected with a vacuum pump (800) to be detected through an air charging pipe (700), and when the vacuum pump (800) to be detected moves into a water body of the detection water cavity (102), air is charged into the vacuum pump (800) to be detected;
the air outlet end of the air charging pipe (700) is connected with the air inlet of the vacuum pump (800) to be detected through a first connector (701), the air inlet end of the air charging pipe (700) is communicated with the air charging cavity through a second connector (702), and the second connector (702) is also fixedly connected with an air inlet valve; the air inlet valve comprises an air inlet rotary drum (900) which is inserted into the second connector (702) in a rotary sealing way, an inner vent hole (902) is formed in the air inlet rotary drum (900), an outer vent hole (7021) which is matched with the inner vent hole (902) is formed in the second connector (702), and when the inner vent hole (902) and the outer vent hole (7021) are mutually aligned, air flow in the air charging cavity can enter the vacuum pump (800) to be detected through the air charging pipe (700); an arc-shaped rack (402) is fixedly arranged on the inner wall of the bottom of the fixed ring cover (400), a support gear (901) meshed with the arc-shaped rack (402) is further arranged at the tail end of the air inlet rotary drum (900), and when the support rotary drum (500) rotates until the vacuum pump (800) to be detected enters the water body of the detection water cavity (102), the support gear (901) is meshed with the arc-shaped rack (402) so that the outer vent (7021) is communicated with the inner vent (902); otherwise, the outer vent (7021) and the inner vent (902) are in a dislocation state.
2. The vacuum pump air tightness detection device according to claim 1, wherein the supporting turntable (500) is provided with at least one clamping mechanism, each clamping mechanism is correspondingly fixed with a vacuum pump (800) to be detected, and the number of the air inflation tubes (700) is matched with the clamping mechanism.
3. The vacuum pump air tightness detection device according to claim 1, wherein the drying mechanism (200) comprises a hot air blower, the hot air blower comprises an air pump (204) and an electric heating net (205) arranged at an outlet of the air pump (204) for outputting hot air; the drying mechanism (200) further comprises a gas homogenizing disc (203), wherein the gas homogenizing disc (203) is rotatably arranged inside the drying mechanism (200) and divides the inside of the drying mechanism (200) into an air cavity (201) and a drying cavity (202).
4. A vacuum pump air tightness detection device as claimed in claim 3, wherein the air heater is arranged at the air cavity (201) side, the air-homogenizing disc (203) is provided with an air-blowing assembly, the air-homogenizing disc (203) is connected with an air-homogenizing motor (206), the air-homogenizing motor (206) drives the air-homogenizing disc (203) to rotate, and hot air at the air cavity (201) side is uniformly fed into the drying cavity (202) through the air-blowing assembly.
5. The vacuum pump air tightness detection device as claimed in claim 4, wherein the air blowing assembly comprises a hot air pipe (207) and an air blowing nozzle (208), the hot air pipe (207) is perpendicular to the air homogenizing disc (203) and is arranged in the drying cavity (202), one end of the hot air pipe (207) is connected with the air cavity (201), the air blowing nozzle (208) is uniformly distributed on one side, close to the drying cavity (202), of the hot air pipe (207), and hot air in the air cavity (201) is fed into the drying cavity (202) in an air outlet direction perpendicular to the air homogenizing disc (203).
6. A vacuum pump air tightness detection device according to claim 1, characterized in that the clamping mechanism comprises a fixed clamping frame (801) and a movable clamping frame (802), wherein the fixed clamping frame (801) comprises a guiding strut (803), the guiding strut (803) is perpendicular to the supporting turntable (500) and fixedly connected to the supporting turntable (500), the movable clamping frame (802) comprises at least one set of arc clamps (8021), and the arc clamps (8021) clamp the vacuum pump (800) to be detected and are connected with the fixed clamping frame (801).
7. The vacuum pump air tightness detection device according to claim 6, wherein each arc-shaped clamp (8021) is fixedly provided with a top seat (8023), and the arc-shaped clamps (8021) in the same group are fixedly connected with each other through a connecting support rod (8024) and the top seats (8023); the end part of the arc-shaped clamp (8021) is provided with a supporting leg (8022) with a screw hole, and the arc-shaped clamp (8021) is fixedly connected with the fixed clamping frame (801) through the supporting leg (8022) through a bolt.
CN202310457541.6A 2023-04-26 2023-04-26 Vacuum pump gas tightness detection device Active CN116164895B (en)

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Application Number Priority Date Filing Date Title
CN202310457541.6A CN116164895B (en) 2023-04-26 2023-04-26 Vacuum pump gas tightness detection device

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Application Number Priority Date Filing Date Title
CN202310457541.6A CN116164895B (en) 2023-04-26 2023-04-26 Vacuum pump gas tightness detection device

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