CN211373954U - Screw vacuum pump gas tightness detects frock - Google Patents
Screw vacuum pump gas tightness detects frock Download PDFInfo
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- CN211373954U CN211373954U CN202020099183.8U CN202020099183U CN211373954U CN 211373954 U CN211373954 U CN 211373954U CN 202020099183 U CN202020099183 U CN 202020099183U CN 211373954 U CN211373954 U CN 211373954U
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Abstract
The application relates to a screw vacuum pump gas tightness detects frock belongs to frock technical field, includes: the top end of the oil injection pool is provided with an opening, and the bottom end of the oil injection pool is provided with an oil discharge port; the front plugging plate is arranged on the side wall of the oil injection pool and can be inserted into the front end of the screw vacuum pump to seal the front end of the screw vacuum pump; the gas conveying unit is arranged on the outer wall of the oil injection pool and can be used for inflating the screw vacuum pump; the clamping unit is arranged on the side wall of the oil injection pool, the side wall is opposite to the side wall where the front plugging plate is located, and the clamping unit can push the screw vacuum pump to move towards the direction close to the front plugging plate; have simple structure, advantage with low costs, through setting up the oiling pond and setting up the structure that various parts on the oiling pond are integrated as an organic whole, can realize screw vacuum pump's sealed, gas injection, the function that detects at the integration in the oiling pond, improve convenience and the detection efficiency who detects greatly.
Description
Technical Field
The utility model relates to a frock technical field especially relates to a screw vacuum pump gas tightness detects frock.
Background
The screw vacuum pump is an air suction device which utilizes a pair of screws to perform air suction and exhaust actions generated by synchronous high-speed reverse rotation in a pump shell. In the assembling process of the screw vacuum pump, parts in the pump body and the pump cover are installed, and the air tightness detection of the vacuum pump is needed after the pump body and the pump cover are installed. In the prior art, an air tightness detector is usually adopted for detection, and the air tightness detector in the market is generally expensive, so that the air tightness detection mode is generally suitable for large-scale screw vacuum pump production plants, and small-scale production plants are high in cost and not suitable for the current small-scale production plants.
The above description is included in the technical recognition scope of the inventors, and does not necessarily constitute the prior art.
SUMMERY OF THE UTILITY MODEL
This application is expensive in order to solve the gas tightness that current screw vacuum pump adopted and detects the machine, the higher problem of cost, and this kind of gas tightness that the price is expensive detects the machine and is not suitable for the mode that small-size enterprise detected screw vacuum pump gas tightness, so, designs a screw vacuum pump gas tightness and detects frock, and it specifically is:
the utility model provides a screw vacuum pump gas tightness detects frock, includes:
the top end of the oil injection pool is provided with an opening, and the bottom end of the oil injection pool is provided with an oil discharge port;
the front plugging plate is arranged on the side wall of the oil injection pool and can be inserted into the front end of the screw vacuum pump to seal the front end of the screw vacuum pump;
the gas conveying unit is arranged on the outer wall of the oil injection pool and can be used for inflating the screw vacuum pump;
the clamping unit is arranged on the side wall of the oil injection pool, the side wall is opposite to the side wall where the front plugging plate is located, and the clamping unit can push the screw vacuum pump to move towards the direction close to the front plugging plate.
Further preferably, the method further comprises the following steps:
the positioning grooves are formed in the side wall, and the side wall where the gas conveying unit is located are the same side wall.
Preferably, an annular O-shaped ring is further arranged in the front blocking plate.
Further preferably, the method further comprises the following steps:
the guide rail sets up two and sets up in the bottom of annotating the oil bath, two the guide rail is common perpendicular along setting the lateral wall of preceding closure plate and setting the lateral wall of gas conveying unit.
The sliding plate is arranged on the guide rail in a sliding mode and can move along the guide rail.
Further preferably, the gas delivery unit includes:
the air pump is arranged on the outer wall of the oil injection pool;
and one end of the flexible conveying pipe is connected with the air pump, the other end of the flexible conveying pipe is provided with a connector, and the connector is connected with a communication port of the screw vacuum pump.
Further preferably, the clamping unit includes:
the motor is arranged on the outer wall of the oil injection pool;
the screw rod penetrates through the inner side and the outer side of the side wall of the oiling pool;
and the transmission mechanism is connected between the lead screw and the motor, and the motor drives the transmission mechanism to enable the lead screw to move linearly in the oil injection pool.
Preferably, the transmission mechanism is a gear transmission, and specifically includes:
the driven gear is in threaded connection with the lead screw;
the driving gear is meshed with the driven gear and is fixed on an output shaft of the motor.
Further preferably, the method further comprises the following steps:
the clamping plate is vertically arranged and fixedly connected with one end, extending to the inner side of the oil injection pool, of the lead screw.
Preferably, a rubber pad is further arranged on the clamping plate.
Preferably, a sealing element is arranged at the joint between the screw rod and the oil filling pool.
The above technical scheme is adopted in the utility model has simple structure, advantage with low costs, through setting up the oiling pond and setting up the structure that various parts on the oiling pond are integrated as an organic whole, can realize screw vacuum pump's sealed, gas injection, the function that detects in the oiling pond integration, improve the degree of convenience and the detection efficiency that detect greatly, adopt the injected oil to observe whether screw vacuum pump has the mode that the bubble produced to avoid corroding screw vacuum pump internals simultaneously.
Drawings
Fig. 1 is a perspective view of the present invention;
fig. 2 is a perspective view of another perspective of the present invention;
fig. 3 is a state diagram of the screw vacuum pump put into the tool.
In the figure, 1, an oil filling pool, 2, a clamping unit, 201, a screw rod, 202, a driven gear, 203, a driving gear, 204, a clamping plate, 205, a rubber pad, 206, a motor, 3, a positioning groove, 4, a gas conveying unit, 401, an air pump, 402, a flexible conveying pipe, 403, a connector, 5, a front blocking plate, 6, a sliding plate, 7, a screw, 8, an O-shaped ring, 9, an oil outlet, 10, a switch valve, 11, a guide rail, 12 and a screw vacuum pump are arranged.
Detailed Description
In order to clearly illustrate the technical features of the present invention, the present invention is explained in detail by the following embodiments with reference to the accompanying drawings.
In addition, in the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate orientations and positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
As shown in fig. 1-3, the tool for detecting the air tightness of the screw vacuum pump comprises an oil filling pool 1, a front blocking plate 5, a gas conveying unit 4 and a clamping unit 2. Annotate oil bath 1 can be square shell form, also can be cylinder shell form, in this application, annotate oil bath 1 and adopt square shell form, the top at oiling bath 1 has the opening, the bottom has oil drain port 9, still be connected with a ooff valve 10 in oil drain port 9 department, realize the break-make of oil drain port 9 through operating switch valve 10, oil drain port 9 sets up the position that is close to the one corner in the bottom of annotating oil bath 1, oil drain port 9 does not hinder the installation and the setting of other parts like this, screw vacuum pump 12 places in oiling bath 1 through the opening part, and oiling bath 1 also is through the opening part with hydraulic oil injection oiling bath 1. Preceding closure plate 5 sets up on the left end lateral wall of oiling pond 1, the shape and the structure of preceding closure plate 5 and screw vacuum pump 12 and shape looks adaptation, preceding closure plate 5 can all produce assorted shutoff piece when producing screw vacuum pump 12 with the mouth of outside intercommunication for other of screw vacuum pump 12 (as for screw vacuum pump 12, only need with other mouthful utilize the shutoff piece earlier carry out the shutoff can, this part is prior art, do not add the perplexity here). The gas conveying unit 4 is arranged on the outer wall of the oil filling pool 1, compressed gas can be filled into the screw vacuum pump 12 through the gas conveying unit 4, in the embodiment, the gas conveying unit 4 inputs the compressed gas into the screw vacuum pump 12 through the oil filling port in the screw vacuum pump 12, the gas is conveniently and simply injected through the oil filling port, and meanwhile, the purpose of inputting the compressed gas can be achieved. The clamping unit 2 is arranged on the side wall of the left end of the oil injection pool 1, after the screw vacuum pump 12 is placed in the oil injection pool 1, the screw vacuum pump 12 can be pushed through the clamping unit 2, the front plugging plate 5 is further inserted into the front end of the screw vacuum pump 12, then the front plugging plate 5 is fastened with the front end of the screw vacuum pump 12 through the screw 7, at the moment, hydraulic oil is injected into the oil injection pool 1 when the clamping unit 2 is in a state of clamping the screw vacuum pump 12 until the screw vacuum pump 12 is submerged by the hydraulic oil and stops injecting, finally, the gas conveying unit 4 inputs compressed gas into the screw vacuum pump 12 to observe whether bubbles are generated, if yes, the screw vacuum pump 12 is installed unqualifiely, some parts are defective, the leakage position of the screw vacuum pump 12 can be determined according to the bubble position, and if no bubbles are generated, the screw vacuum pump 12 is qualified. Through the mode convenient and fast that above-mentioned technical scheme detected screw vacuum pump 12, can realize the function sealed, aerify and detect the integration to screw vacuum pump 12 in oiling pond 1, improve the convenience degree and the detection efficiency who detect greatly, simultaneously, adopt the injected oil to observe whether screw vacuum pump 12 has the mode that the bubble produced and can avoid corroding screw vacuum pump 12 internals.
Further, in order to facilitate accurate positioning of the center of the front end of the screw vacuum pump 12 to be aligned with the center of the front closure plate 5, and to achieve one-time positioning of the screw vacuum pump 12, two positioning grooves 3 are further arranged on the inner side wall of the oil injection pool 1, the side wall and the side wall where the gas conveying unit 4 is located are the same side wall, the two positioning grooves 3 are located on two sides of the clamping unit 2, two positioning frames can be fixed on the pump body of the screw vacuum pump 12 through a hoop, when the screw vacuum pump 12 is placed in the oil injection pool 1, the positioning frames move up and down in the positioning grooves 3 to achieve positioning of the screw vacuum pump 12 in the front and rear directions, when the screw vacuum pump 12 is placed in the oil injection pool 1, the positioning frames are detached and then clamped by the clamping unit 2, the screw vacuum pump 12 is determined in the up and down directions by design when the front closure plate 5 is installed (namely when the screw vacuum pump 12 is placed on the, the center of the front end of the screw vacuum pump 12 is on the same horizontal plane with the center of the front blocking plate 5).
Further, in order to improve the sealing effect between the front blocking plate 5 and the screw vacuum pump 12, an annular O-shaped ring 8 is further arranged in the front blocking plate 5, so that air leakage of the screw vacuum pump 12 from the position can be avoided, and the detection accuracy is improved.
Further, when the clamping unit 2 drives the screw vacuum pump 12 to approach the front blocking plate 5, the screw vacuum pump 12 is prevented from being skewed to cause dislocation between the center of the front end of the screw vacuum pump 12 and the center of the front blocking plate 5, meanwhile, the operation stability is improved, the centering effect is ensured, two guide rails 11 are arranged at the bottom of the oil injection pool 1 and slide plates 6 arranged on the guide rails 11 in a sliding mode respectively, the slide plates 6 can move along the guide rails 11, the two guide rails 11 are jointly perpendicular to the side wall provided with the front blocking plate 5 and the side wall provided with the gas conveying unit 4, meanwhile, the arrangement is carried out in such a way, on one hand, friction generated at the bottom of the screw vacuum pump 12 due to direct pushing can be prevented, on the other hand, the driving force of the clamping unit 2 on the screw.
Further, the gas delivery unit 4 includes an air pump 401 and a flexible delivery pipe 402, the air pump 401 is disposed on the outer wall of the oil filling tank 1, one end of the flexible delivery pipe 402 is connected to the air pump 401, the other end of the flexible delivery pipe is provided with a connector 403, and the connector 403 is connected to a communication port of the screw vacuum pump 12.
Of course, the gas conveying unit 4 is not limited to the above form, and may be configured to include a blower, an air outlet of the blower is connected to the flexible conveying pipe 402, the flexible conveying pipe 402 is also provided with a connector 403, and the connector 403 can be connected to the communication port of the screw vacuum pump 12.
Further, above-mentioned clamping unit 2 includes motor 206, lead screw 201 and drive mechanism machine, drive mechanism connects between lead screw 201 and motor 206, motor 206 sets up the outer wall at oiling pond 1, lead screw 201 has run through the inside and outside both sides of 1 lateral wall in oiling pond, motor 206 drives drive mechanism and then drives lead screw 201 along its axial rectilinear movement on the lateral wall of oiling pond 1, and then lead screw 201 promotes screw vacuum pump 12 and moves to the direction that is close to preceding closure plate 5, thereby realize the purpose that the front end of screw vacuum pump 12 is connected with preceding closure plate 5, then utilize screw 7 to fasten the front end of preceding closure plate 5 and screw vacuum pump 12.
In other preferred embodiments, the clamping unit 2 may also be replaced by an electric cylinder, the electric cylinder is disposed on the outer wall of the oil filling pool, a piston rod of the electric cylinder penetrates through the outer wall of the oil filling pool and extends into the oil filling pool 1, and the piston rod of the electric cylinder pushes the screw vacuum pump 12 to move towards the direction close to the front blocking plate 5, so as to achieve the purpose of connecting the front end of the screw vacuum pump 12 with the front blocking plate 5; the advantage of adopting lead screw 201 or electric jar in this application lies in the running accuracy height of lead screw 201 and electric jar, and operates steadily, rocks for a short time, can guarantee the centering effect at the front end center of screw vacuum pump 12 and preceding closure plate 5 center.
Further, the transmission mechanism is gear transmission, and specifically includes driven gear 202 and driving gear 203, driven gear 202 and lead screw 201 threaded connection, driving gear 203 and driven gear 202 mesh, and driving gear 203 is fixed in the output shaft of motor 206, and gear transmission compares other driven transmission ratio than, and gear transmission low price, realizes easily, can guarantee like this that lead screw 201 does not rotate, only moves, is favorable to promoting screw vacuum pump 12.
Further, in order to increase the contact area between the screw 201 and the vacuum screw pump 12 when the screw vacuum pump 12 is pushed to move and reduce the stress pressure of the screw vacuum pump 12, a clamping plate 204 is fixedly connected to one end of the screw 201 extending to the inner side of the oil injection pool 1, and the clamping plate 204 is vertically arranged.
Further, in order to avoid the defect of the outer wall of the screw vacuum pump 12 caused by the rigid collision between the clamping plate 204 and the screw vacuum pump 12 and ensure the beautiful effect, the rubber pad 205 is further arranged on the clamping plate 204, and the rubber pad 205 is in flexible contact with the screw vacuum pump 12, so that the damage to the outer wall of the screw vacuum pump 12 is greatly reduced.
Further, in order to avoid the leakage of the hydraulic oil from the oil pool 1 when the oil pool is filled with the hydraulic oil, a sealing member (not shown) is provided at the connection between the screw rod 201 and the oil pool 1, the sealing member may be a sealing sleeve and an O-ring 8, and the sealing manner of the other sealing ring and the O-ring 8 is a sealing manner well known in the prior art and will not be described herein.
The above-mentioned specific embodiments can not be regarded as the restriction to the scope of protection of the utility model, to technical personnel in this technical field, it is right the utility model discloses any replacement improvement or transform that embodiment made all fall within the scope of protection of the utility model.
The parts of the present invention not described in detail are the known techniques of those skilled in the art.
Claims (10)
1. The utility model provides a screw vacuum pump gas tightness detects frock which characterized in that includes:
the top end of the oil injection pool is provided with an opening, and the bottom end of the oil injection pool is provided with an oil discharge port;
the front plugging plate is arranged on the side wall of the oil injection pool and can be inserted into the front end of the screw vacuum pump to seal the front end of the screw vacuum pump;
the gas conveying unit is arranged on the outer wall of the oil injection pool and can inflate the screw vacuum pump;
the clamping unit is arranged on the side wall of the oil injection pool, the side wall is opposite to the side wall where the front blocking plate is located, and the clamping unit can push the screw vacuum pump to move towards the direction close to the front blocking plate.
2. The screw vacuum pump airtightness detection tool according to claim 1, further comprising:
the positioning grooves are formed in the side wall, and the side wall where the gas conveying unit is located are the same side wall.
3. The screw vacuum pump airtightness detection tool according to claim 1, wherein an annular O-ring is further provided in the front blocking plate.
4. The screw vacuum pump airtightness detection tool according to claim 1, further comprising:
the two guide rails are arranged at the bottom of the oil injection pool and are vertical to the side wall provided with the front blocking plate and the side wall provided with the gas conveying unit;
the sliding plate is arranged on the guide rail in a sliding mode and can move along the guide rail.
5. The screw vacuum pump airtightness detection tool according to claim 1, wherein the gas delivery unit includes:
the air pump is arranged on the outer wall of the oil injection pool;
the flexible conveying pipe, flexible conveying pipe one end with the air pump is connected, and the other end is equipped with the connector, the connector is connected with screw vacuum pump's intercommunication mouth.
6. The screw vacuum pump airtightness detection tool according to claim 1, wherein the clamping unit includes:
the motor is arranged on the outer wall of the oil injection pool;
the screw rod penetrates through the inner side and the outer side of the side wall of the oiling pool;
and the transmission mechanism is connected between the lead screw and the motor, and the motor drives the transmission mechanism to enable the lead screw to linearly move in the oil injection pool.
7. The screw vacuum pump airtightness detection tool according to claim 6, wherein the transmission mechanism is gear transmission, and specifically includes:
the driven gear is in threaded connection with the lead screw;
and the driving gear is meshed with the driven gear and is fixed on an output shaft of the motor.
8. The screw vacuum pump airtightness detection tool according to claim 6, further comprising:
the clamping plate is vertically arranged, and the clamping plate is fixedly connected with one end, extending to the inner side of the oil injection pool, of the lead screw.
9. The screw vacuum pump airtightness detection tool according to claim 8, wherein a rubber pad is further provided on the clamping plate.
10. The screw vacuum pump airtightness detection tool according to claim 6, wherein a sealing member is provided at a connection between the lead screw and the oil injection pool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020099183.8U CN211373954U (en) | 2020-01-16 | 2020-01-16 | Screw vacuum pump gas tightness detects frock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020099183.8U CN211373954U (en) | 2020-01-16 | 2020-01-16 | Screw vacuum pump gas tightness detects frock |
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| Publication Number | Publication Date |
|---|---|
| CN211373954U true CN211373954U (en) | 2020-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020099183.8U Active CN211373954U (en) | 2020-01-16 | 2020-01-16 | Screw vacuum pump gas tightness detects frock |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112556941A (en) * | 2020-11-30 | 2021-03-26 | 奇瑞商用车（安徽）有限公司 | Air tightness detection device and detection method for clutch main cylinder assembly |
-
2020
- 2020-01-16 CN CN202020099183.8U patent/CN211373954U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112556941A (en) * | 2020-11-30 | 2021-03-26 | 奇瑞商用车（安徽）有限公司 | Air tightness detection device and detection method for clutch main cylinder assembly |
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