CN215217920U

CN215217920U - Detection tool of indication switch for air filter

Info

Publication number: CN215217920U
Application number: CN202121127760.0U
Authority: CN
Inventors: 朱庆凯
Original assignee: SHANDONG TONGYA MOLDING TECHNOLOGY CO LTD
Current assignee: SHANDONG TONGYA MOLDING TECHNOLOGY CO LTD
Priority date: 2021-05-25
Filing date: 2021-05-25
Publication date: 2021-12-17
Anticipated expiration: 2031-05-25

Abstract

The application discloses indication switch's detection frock for air cleaner belongs to automobile parts and detects technical field. The detection tool comprises an air chamber, wherein a porous partition plate is arranged in the air chamber; the air exhaust mechanism is communicated with the air chamber so as to enable the air chamber to be in a negative pressure state; a pressure indicator in communication with the air chamber through a first conduit for indicating a pressure within the air chamber; and one end of the indicating switch is communicated with the air chamber through a second pipeline, the other end of the indicating switch is connected with the universal meter, the pressure in the air chamber reaches a preset value, and the indicating switch is closed, combined and conducted with the universal meter through electric connection. The detection tool can reduce gas fluctuation when negative pressure is pumped, improve the accuracy of detection results of the indicating switch, and ensure that the indicating switch can give an alarm in time when in actual use so as to remind a user to replace an air filter.

Description

Detection tool of indication switch for air filter

Technical Field

The application relates to a detection tool of an indicating switch for an air filter, and belongs to the technical field of automobile part detection.

Background

The air cleaner is used for filtering air sucked by an engine, and is generally placed in a shell, wherein one end of the shell is used for sucking air, and the sucked air enters the engine from the other end of the shell after passing through the air cleaner. In order to detect the air filtering capacity of the air filter, an indicating switch is usually connected to the shell, the shell is communicated with the indicating switch, and when the negative pressure reaches a preset value, the indicating switch can be electrically conducted under the action of the negative pressure to remind a user of replacing the air filter in time.

The working principle of the indicating switch is as follows: along with air cleaner filter time's extension, air cleaner surface has fallen the dust, pollutes when blockking up to a certain extent when air cleaner for form the negative pressure in the cavity of casing, has two metal gasket in indicating switch's the cavity, when the negative pressure reaches the predetermined value, the metal gasket contact, the circuit switch-on this moment, the alarm lamp is bright, realizes indicating switch's alarming function.

The detection device of the existing indicating switch is characterized in that the indicating switch is connected to an air storage cylinder, a metal gasket of the indicating switch is connected with a bulb, the air storage cylinder is connected with a pressure indicator, the air storage cylinder is vacuumized to be in a negative pressure state, and the indication number of the pressure indicator when the bulb is on is observed during vacuumizing so as to detect whether the indicating switch is qualified. However, the air fluctuation in the air storage cylinder is too large during vacuum pumping, so that the detection result is inaccurate, the indication switch cannot give an alarm in time during actual use, the air filter is not used properly, and the engine can be damaged in serious cases.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the application provides a detection frock of indicating switch for air cleaner, and this detection frock can reduce the gas fluctuation when taking out the negative pressure, improves the degree of accuracy of indicating switch testing result, ensures that indicating switch can in time report to the police when in-service use to remind the user to change air cleaner.

According to an aspect of the application, a detection tool of an indicating switch for an air filter is provided, the test tool reduces the fluctuation degree of air flow in an air chamber by arranging a porous partition plate in the air chamber, stabilizes air pressure in the air chamber, and when the indicating switch gives an alarm, the reading of a pressure indicator is the most accurate, and the accuracy of detection of the indicating switch is improved.

Air cleaner is with indication switch's detection frock includes:

the air chamber is internally provided with a porous partition plate;

the air exhaust mechanism is communicated with the air chamber so as to enable the air chamber to be in a negative pressure state;

a pressure indicator in communication with the air chamber through a first conduit for indicating a pressure within the air chamber;

and one end of the indicating switch is communicated with the air chamber through a second pipeline, the other end of the indicating switch is connected with the universal meter, the pressure in the air chamber reaches a preset value, and the indicating switch is closed, combined and conducted with the universal meter through electric connection.

Optionally, the gas chamber comprises a first chamber and a second chamber, the first chamber is communicated with the air suction mechanism, the second chamber is communicated with the pressure indicator and the indicating switch, and the cross-sectional area of the first chamber is smaller than that of the second chamber.

Optionally, the porous partition plate is arranged in the second chamber, a socket is arranged at the top of the second chamber for inserting the porous partition plate, and a sealing member is arranged at the joint of the porous partition plate and the socket.

Optionally, a regulating valve is connected to the first chamber for fine-tuning the pressure in the chamber.

Optionally, the first and second chambers are cylindrical or square.

Optionally, the air chamber further comprises a base, a buffer cavity is formed in the base in a hollow mode, and the indicating switch is communicated with the air chamber through the base and the first pipeline.

Optionally, a stop valve is arranged between the air pumping mechanism and the air chamber to realize the connection and disconnection between the air pumping mechanism and the air chamber.

Optionally, the air exhaust mechanism is a vacuum pump, and the vacuum pump is controlled by a motor.

Optionally, the pressure indicator is a U-shaped pressure gauge, and water is used as a pressure measuring working medium in the U-shaped pressure gauge.

Optionally, the air chamber is communicated with a plurality of the indicating switches through a second pipeline, and each indicating switch is connected with one multimeter.

Benefits that can be produced by the present application include, but are not limited to:

1. the application provides an indicating switch's detection frock for air cleaner, this test fixture is through setting up porous partition in the air chamber, reduces the air current fluctuation degree in the air chamber, stabilizes the atmospheric pressure in the air chamber, and when indicating switch reported to the police, the registration of pressure indicator is the most accurate, improves the degree of accuracy to indicating switch detection.

2. The application provides an indicating switch's detection frock for air cleaner, the air chamber includes first cavity and second cavity, the cross sectional area of first cavity will be less than the second cavity, the cross sectional area of first cavity is less, do benefit to and bleed the connection of mechanism, produce certain cushioning effect to the air current of bleeding the in-process, the cross sectional area of second cavity is great, the air current speed is slower when guaranteeing to bleed, the negative pressure state of stable second cavity that can be faster, further improve the accuracy of testing result.

3. The application provides an indicating switch's detection frock for air cleaner, indicating switch pass through this base and second pipeline and air chamber intercommunication, can form certain buffering when air exhaust mechanism bleeds, avoids indicating switch to take place the closure when the air current is unstable, causes the test deviation, and then influences indicating switch's in-service use.

4. The application provides an indicating switch's detection frock for air cleaner, a plurality of indicating switch and air chamber intercommunication can detect a plurality of indicating switch simultaneously, are applicable to the large-scale use, improve detection efficiency, save the number of times of bleeding of the mechanism of bleeding, improve the life of the mechanism of bleeding, practice thrift manufacturing cost.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic perspective view of a detection tool of an indicator switch for an air cleaner according to an embodiment of the present application;

FIG. 2 is a schematic side cross-sectional view of a second chamber according to an embodiment of the present disclosure;

list of parts and reference numerals:

10. an air extraction mechanism; 20. a first chamber; 21. adjusting a valve; 30. a second chamber; 31. a porous separator; 32. a handle; 40. a pressure indicator; 41. a first conduit; 51. an indication switch; 52. a second conduit; 53. a universal meter; 54. a base.

Detailed Description

In order to more clearly explain the overall concept of the present application, the following detailed description is given by way of example in conjunction with the accompanying drawings.

In order that the above objects, features and advantages of the present application can be more clearly understood, the present application will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited by the specific embodiments disclosed below.

In addition, in the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The embodiment of the application discloses a detection tool of an indicating switch 51 for an air filter, and with reference to fig. 1-2, the detection tool comprises an air chamber, an air extraction mechanism 10, a pressure indicator 40 and the indicating switch 51, wherein a porous partition plate 31 is arranged in the air chamber, and the air extraction mechanism 10 is communicated with the air chamber so as to enable the air chamber to be in a negative pressure state; a pressure indicator 40 communicating with the air chamber through a first conduit 41 for indicating the pressure within the air chamber; one end of the indicating switch 51 is communicated with the air chamber through a second pipeline 52, the other end of the indicating switch is connected with a universal meter 53, the pressure in the air chamber reaches a preset value, and the indicating switch 51 is closed and is electrically connected and conducted with the universal meter 53.

The air extracting mechanism 10 is used for extracting air, the porous partition plate 31 in the air chamber is used for stabilizing air flow in the air chamber, the air pressure in the air chamber and at the joint of the air chamber, the pressure indicator 40 and the indicator switch 51 is equal, the pressure indicator 40 is used for indicating the pressure in the air chamber, the indicator switch 51 is connected with the air chamber through the second pipeline 52, the indicator switch 51 can be closed under a negative pressure state and is electrically conducted with the universal meter 53, the universal meter 53 can give an alarm when the electrical conduction is conducted, when the universal meter 53 gives an alarm, whether the indication number of the pressure indicator 40 is in the range of a preset value or not is observed, if so, the indicator switch 51 is qualified, and if so, the indicator switch 51 is unqualified.

For example, if the index of the pressure indicator 40 is within ± 8% of the predetermined value, it indicates that the index switch is qualified and meets the requirement of actual use; if the indication of the pressure indicator 40 exceeds the range of the predetermined value. + -. 8%, it indicates that the indication switch 51 is not qualified and cannot be used for practical use. Whether the indicating switch 51 is qualified or not is judged according to the indication number of the pressure indicator 40 when the multimeter 53 gives an alarm, the fluctuation degree of the air flow in the air chamber is reduced and the air pressure in the air chamber is stabilized by arranging the porous partition plate 31 in the air chamber, so that the indicating switch 51 and the pressure indicator 40 are in the same negative pressure state, the indication number of the pressure indicator 40 is most accurate when the indicating switch 51 gives an alarm, and the detection accuracy of the indicating switch 51 is improved. The alarm of the indication switch 51 within the range of ± 8% of the predetermined value is a requirement for a certain indication switch 51, and is only an example, and the range is also adjusted according to different requirements for the indication switch 51.

Specifically, the closing of the indication switch 51 means that the internal contact of the indication switch 51 is contacted, and an electrically conductive state is generated, two separated metal gaskets or a film with a contact are arranged inside the indication switch 51, the multimeter 53 is respectively connected with the two separated metal gaskets or the film with the contact through two electric leads, the metal gaskets or the film with the contact are arranged in a sealed cavity inside the indication switch 51, the sealed cavity and the air chamber of the indication switch 51 are communicated, when the air suction mechanism 10 sucks air, the sealed cavity of the indication switch 51 is made to be in a negative pressure state, the metal gaskets and the film with the contact are close to each other, when the negative pressure reaches a certain value, the contact on the metal gaskets or the film is attached to form the electrically conductive state, and then the multimeter 53 gives an alarm after being electrified.

Specifically, the indication switch 51 can be electrically conducted when the negative pressure reaches the preset value, and in actual use, due to the fact that vehicles are used, the requirement of the preset value can be different, the relative distance between a metal gasket or a film with a contact in the indication switch 51 can be adjusted according to actual needs, so that the indication switch 51 gives an alarm under the required preset value, the indication switch 51 with different requirements can be determined by the test tool, and the universality of the test tool is improved.

Specifically, porous partition plate 31 can be one, also can be a plurality of, can be perpendicular with the flow direction of the interior gas of air chamber, also can be certain contained angle, can play stabilize the air current in the air chamber can, when porous partition plate 31 is a plurality of, a plurality of porous partition plate 31 parallel arrangement, porous partition plate 31 can also filter the gas in the air chamber, avoids the impurity in the air to enter into air exhaust mechanism 10, and then damages air exhaust mechanism 10.

In one embodiment, the air chamber comprises a first chamber 20 and a second chamber 30, the first chamber 20 is communicated with the air suction mechanism 10, the second chamber 30 is communicated with the pressure indicator 40 and the indicator switch 51, and the cross-sectional area of the first chamber 20 is smaller than that of the second chamber 30. Divide into first cavity 20 and second cavity 30 with the air chamber, and the cross sectional area of first cavity 20 will be less than second cavity 30, this setting mode is at air bleed mechanism 10 to the air chamber in-process, it is stable to guarantee the air current, the cross sectional area of first cavity 20 is less, do benefit to and air bleed mechanism 10's connection, produce certain cushioning effect to the air current of air bleed in-process, the cross sectional area of second cavity 30 is great, the air current speed is slower when guaranteeing to bleed, the negative pressure state of second cavity 30 of stability that can be faster, further improve the accuracy of testing result.

In one embodiment, the porous partition 31 is disposed in the second chamber 30, the top of the second chamber 30 is provided with a socket for inserting the porous partition 31, and a sealing member is disposed at the connection position of the porous partition 31 and the socket. Porous baffle 31 sets up in second chamber 30, can be under the gentle state of second chamber 30 air current flow, further reduce the fluctuation of the interior air current of second chamber 30, the top of second chamber 30 sets up the socket, porous baffle 31 sets up in second chamber 30 through this socket, be convenient for change porous baffle 31, preferably, porous baffle 31 is perpendicular with the flow direction of air current in the air chamber, and the area of porous baffle 31 equals the cross-sectional area of air chamber, the junction of porous baffle 31 and socket sets up the sealing member, be favorable to improving the leakproofness of air chamber, prevent that air leakage from appearing in the air chamber, avoid influencing indicating switch 51's test result.

As a preferred embodiment, the handle 32 is arranged on the porous partition plate 31, and the handle 32 can be pulled to take out or put back the porous partition plate 31 at the socket, so that the porous partition plate 31 is more convenient to replace, and the convenience and the practicability of the detection tool are improved.

In one embodiment, the first chamber 20 is connected to a regulating valve 21, the regulating valve 21 is used for fine-adjusting the pressure in the air chamber, the regulating valve 21 is opened for introducing air into the air chamber and further adjusting the pressure in the air chamber, when the detection of the indicating switch 51 is strict, the pressure in the air chamber is regulated, the indication number of the pressure indicator 40 is at a predetermined value, and whether the indicating switch 51 gives an alarm at this time is observed to judge whether the indicating switch 51 is qualified. The setting of governing valve 21 can finely tune the air chamber pressure, and the qualification of indicating switch 51 of being convenient for judge more accurately.

In one embodiment, the first chamber 20 and the second chamber 30 have a cylindrical or square shape, which facilitates the formation of the first chamber 20 and the second chamber 30 and the insertion of the porous partition 31, thereby simplifying the structure of the air cell and allowing the air cell to be changed into a negative pressure state more quickly during air suction.

In one embodiment, the air conditioner further comprises a base 54, the base 54 is hollow to form a buffer cavity, and the indication switch 51 is communicated with the air chamber through the base 54 and the first pipeline 41. Indication switch 51 has the through-hole, realize being connected with base 54 through this through-hole, and the diameter of base 54 is greater than the diameter of indication switch 51 through-hole, and indication switch 51 communicates with the air chamber through this base 54 and second pipeline 52, can form certain buffering when air exhaust mechanism 10 bleeds, avoids indication switch 51 to take place to close when the air current is unstable, causes the test deviation, and then influences indication switch 51's in-service use.

In one embodiment, a stop valve is disposed between the air pumping mechanism 10 and the air chamber to connect and disconnect the air pumping mechanism 10 and the air chamber. This stop valve sets up in the junction of first cavity 20 and air bleed mechanism 10, when the air chamber need bleed, opens this stop valve, and air bleed mechanism 10 and air chamber intercommunication take the air in the air chamber out, when the pressure in the air chamber reaches the within range of predetermined value, close this stop valve through artifical or settlement procedure, the intercommunication of disconnection air bleed mechanism 10 and air chamber. The stop valve can realize the connection and disconnection of the air exhaust mechanism 10 and the air chamber flexibly, and the automation degree of the test tool is improved.

As an embodiment, the air pumping mechanism 10 is a vacuum pump, the vacuum pump is controlled by a motor, the power of the vacuum pump can be selected according to the actual required pressure in the air chamber, and the motor drives the vacuum pump to operate to pump the air chamber.

As an embodiment not shown, when the volume of the air chamber is small, the air pumping mechanism 10 may also be a manual air pumping device in the shape of a needle tube, air pumping can be performed manually, the operation is more flexible and convenient, and the arrangement is suitable for testing the indicating switch 51 which needs to give an alarm in the case of low negative pressure.

In one embodiment, the pressure indicator 40 is a U-gauge, which uses water as the pressure measuring medium. The accuracy of U type pressure gauge is higher, can be more audio-visual detection give vent to anger indoor pressure, reduces the instrument error to water is as the medium, can not the polluted environment.

In one embodiment, the air chamber is in communication with a plurality of indicator switches 51 through a second conduit 52, each indicator switch 51 being connected to a multimeter 53. The air cell is connected to a pressure indicator 40 for indicating the pressure in the air cell, but the number of the indicator switches 51 and the multimeter 53 may be plural, and plural indicator switches 51 may be connected to the air cell through plural second pipes 52 respectively, or may be connected to the air cell through one second pipe 52. When there is one second pipeline 52, the first pipeline 41 is respectively connected with a plurality of third pipelines, and each third pipeline is connected with an indication switch 51. A plurality of indicating switch 51 and air chamber intercommunication can detect a plurality of indicating switch 51 simultaneously, are applicable to the large-scale use, improve detection efficiency, save the number of times of bleeding of mechanism 10 of bleeding, improve the life of mechanism 10 of bleeding, practice thrift manufacturing cost.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A detection tool of an indicating switch for an air filter is characterized by comprising

The air chamber is internally provided with a porous partition plate;

2. The detection tool of the indicating switch for the air filter as claimed in claim 1, wherein the air chamber comprises a first chamber and a second chamber, the first chamber is communicated with the air exhaust mechanism, the second chamber is communicated with the pressure indicator and the indicating switch, and the cross-sectional area of the first chamber is smaller than that of the second chamber.

3. The detection tool of the indicating switch for the air filter as claimed in claim 2, wherein the porous partition plate is arranged in the second chamber, a socket is arranged at the top of the second chamber for inserting the porous partition plate, and a sealing element is arranged at the joint of the porous partition plate and the socket.

4. The detection tool of the indication switch for the air filter as claimed in claim 2, wherein the first chamber is connected with a regulating valve, and the regulating valve is used for fine adjustment of pressure in the air chamber.

5. The detection tool of the indicating switch for the air filter as claimed in claim 2, wherein the first chamber and the second chamber are cylindrical or square.

6. The detection tool of the indicating switch for the air filter as claimed in claim 2, further comprising a base, wherein a buffer cavity is formed in the base in a hollow mode, and the indicating switch is communicated with the air chamber through the base and the first pipeline.

7. The detection tool of the indication switch for the air filter as claimed in claim 1, wherein a stop valve is arranged between the air exhaust mechanism and the air chamber to realize communication and disconnection between the air exhaust mechanism and the air chamber.

8. The detection tool of the indication switch for the air filter as claimed in claim 7, wherein the air exhaust mechanism is a vacuum pump, and the vacuum pump is controlled by a motor.

9. The detection tool of the indicating switch for the air filter as claimed in claim 1, wherein the pressure indicator is a U-shaped pressure gauge, and water is used as a pressure measuring working medium in the U-shaped pressure gauge.

10. The detection tool of the indicating switch for the air filter is characterized in that the air chamber is communicated with the indicating switches through a second pipeline, and each indicating switch is connected with one universal meter.