A kind of attachment device of water pump air-leakage test
Technical field
The utility model relates to detection device field, specifically a kind of attachment device of water pump air-leakage test.
Background technique
Immersible pump is in assembling process, to guarantee that it is safe that pump motor uses, it is necessary to carry out motor cavity gas to every water pump
Close property detection.Air-leakage test is the important link in water pump production process, be examine pump motor chamber whether seal it is effective
Means.
When early stage water pump air-leakage test, water pump is that survey water pump is connected by old structured testing connector, and operating procedure is such as
Under: (1) nipple of test mark post with pressure gauge and water pump leak detection mouth are tightened.(2) bicycle gas is directed at air gun again
Door core inflation.(3) it places into sink and has checked whether leakage.Operation is relatively cumbersome in this way, and both hands are inflated work again
Make, also to have checked whether leakage.The convenience of operation is to be improved.And each valve inside is fixedly connected with pressure gauge, each
Valve inside correspondence fixes a pressure gauge, for different Model of pump, needs using different size of valve inside, while just must
Different pressure gauge must be equipped with, so the adaptability of the detection device is not just high, waste detection instrument, increase detection at
This.
Summary of the invention
The purpose of the utility model is to provide a kind of attachment devices of water pump air-leakage test.
It is cumbersome that the utility model will solve existing detection device, it has not been convenient to detect, and adaptability is not high, increase
The problem of testing cost.
The technical solution of the utility model is: a kind of attachment device of water pump air-leakage test, including motor cavity connection dress
It sets, hose, threeway, air gauge and gas source, the left end of the threeway is connect by hose with the motor cavity attachment device, and three
Logical right end is connected by hose with the gas source, and the upper end of threeway connects with the air gauge.
Preferably, air pressure valve is additionally provided on the hose between the threeway and gas source.
Preferably, the motor cavity attachment device includes nipple, sealing sleeve pipe and tracheae quick coupling, described
The lower end of nipple is equipped with thread segment, and the inside of the middle and lower part of nipple is equipped with filling channel, the filling channel
Upper end is equipped with connection air flue, and the middle part side of the sealing sleeve pipe is equipped with connecting hole, the left end of the tracheae quick coupling
In the connecting hole, the right end of the tracheae quick coupling connects with the hose.
As it is further preferred that one end of the connection air flue is connected to the upper end of the filling channel, the other end
External with the nipple is connected to.
As it is further preferred that the upper end of the nipple is equipped with spanner.
As it is further preferred that being equipped with O-ring seal between the sealing sleeve pipe and the nipple, described is close
Circlip for shaft is equipped between the lower end and nipple of big envelope pipe;The top and middle part of the nipple are distributed with close
Sealing groove, the O-ring seal are set in the seal groove, i.e., above and below the junction of the described tracheae quick coupling and sealing sleeve pipe
Two sides are equipped with O-ring seal.
As it is further preferred that by being welded and fixed between the sealing sleeve pipe and tracheae quick coupling.
The utility model has the following beneficial effects: the utility model structure is simple, connection relationship understands, it is airtight to simplify water pump
Property detection attended operation the step of, it is only necessary to will test equipment connects, and is tested into the water, without one side assist
Aerating valve, has seen whether leakage on one side, and detection process facilitates controllable, and class, according to the model of different water pumps, replacement is not
The nipple of same specification, it is adaptable, reduce testing cost.
Detailed description of the invention
Fig. 1 is existing old structure air-leakage test mark post schematic diagram.
Fig. 2 is the structural schematic diagram of the utility model.
Fig. 3 is the structural schematic diagram of the motor cavity attachment device of the utility model.
Fig. 4 is attachment structure schematic diagram when the utility model is used.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and embodiments.
As shown, the utility model includes motor cavity attachment device 1, hose 2, threeway 4, air gauge 3 and gas source 6, institute
The left end of threeway 4 is stated to connect by hose 2 with the motor cavity attachment device 1, the right end of threeway 4 pass through hose 2 with it is described
Gas source 6 connects, and the upper end of threeway 4 connects with the air gauge 3.
In the present embodiment, air pressure valve 5 is additionally provided on the hose 2 between the threeway 4 and gas source 6, air pressure valve 5 is able to achieve
It dies in the case where being not related to the source of holding one's breath 6 to detection device, reducing 6 frequent start-stop of gas source leads to the feelings of its reduced lifetime
Condition.
In the present embodiment, the motor cavity attachment device 1 includes that nipple 17, sealing sleeve pipe 12 and tracheae quickly connect
First 13, the lower end of the nipple 17 is equipped with thread segment 19, and the inside of the middle and lower part of nipple 17 is equipped with filling channel
18, the upper end of the filling channel 18 is equipped with connection air flue 14, and the middle part side of the sealing sleeve pipe 12 is equipped with connecting hole,
The left end of the tracheae quick coupling 13 is set in the connecting hole, the right end of the tracheae quick coupling 13 and the hose
2 connect.
In the present embodiment, one end of the connection air flue 14 is connected to the upper end of the filling channel 18, the other end with
The external connection of the nipple 17.
In the present embodiment, the upper end of the nipple 17 is equipped with spanner 1.The setting of spanner 1 can make screw thread connect
First 17 more easily link together with motor cavity 7 during connection, more labor-saving convenient for the rotation of nipple 17.
In the present embodiment, O-ring seal 15 is equipped between the sealing sleeve pipe 12 and the nipple 17, described is close
Circlip for shaft 16 is equipped between the lower end and nipple 17 of big envelope pipe 12;The top and middle part of the nipple 17
It is laid with seal groove, the O-ring seal 15 is set in the seal groove, i.e., the described tracheae quick coupling 13 and sealing sleeve pipe 12
Junction two sides up and down be equipped with O-ring seal 15.The case where ensuring air-tightness, being not in gas leakage.
In the present embodiment, by being welded and fixed between the sealing sleeve pipe 12 and tracheae quick coupling 13.This structure
Ensure fixation between sealing sleeve pipe 12 and tracheae quick coupling 13 and is not easy gas leakage.
The dress sequence of the utility model is: tracheae quick coupling 13 being connect with sealing sleeve pipe 12, is welded and fixed, then by O
Type sealing ring 15 is packed into the seal groove of nipple 17, is put into sealing sleeve pipe 12, and circlip for shaft 16 is mounted in nipple
On 17;Motor cavity attachment device 1, air gauge 3, air pressure valve 5 are connected respectively with threeway 4 finally by hose 2, and connect gas source
6.By motor cavity 7 into the water after, open gas source 6 and air pressure valve 5.The working principle of the utility model is: hose 2, threeway
4, hose 2 is connected with air pressure valve 5, and air pressure valve 5 is connected with gas source 6, and air gauge 3 is provided on air pressure valve 5, and gas source 6 supplies, air pressure
Table 3 shows air pressure, if the air-tightness of motor cavity 7, there are problem, air gauge 3 will show air pressure reduction.Using the present apparatus it
Afterwards, testing staff need to only observe air pressure, very convenient without observing while inflating.The other end of hose 2 connects
There is nipple 17, according to different Model of pump, the nipple 17 of replaceable different size.The adaptability of detection device is high,
Reduce testing cost.