CN215065238U

CN215065238U - Helium detection tool for expansion valve

Info

Publication number: CN215065238U
Application number: CN202121035693.XU
Authority: CN
Inventors: 俞其昌; 陈宇涛; 严雅灯; 张艺耀; 严瑞
Original assignee: Ningbo Songying Automobile Parts Co ltd
Current assignee: Ningbo Songying Automobile Parts Co ltd
Priority date: 2021-05-14
Filing date: 2021-05-14
Publication date: 2021-12-07
Anticipated expiration: 2031-05-14

Abstract

The utility model discloses a frock is examined to helium of expansion valve, include the box, set up in the top cap at box top, box and top cap sealing connection, two sets of detection device of symmetry around being provided with in the box, detection device includes guide rail, first guide block, second guide block, connecting piece, shutoff piece, storage bucket, work or material rest, locating piece, transition piece, stopper, cylinder, screens portion, connecting bolt. Has the advantages that: through setting up two the same detection mechanism around to realize the purpose that detects fast, improve work efficiency, and utilize the cooperation operation of storage bucket, work or material rest, shutoff piece, further improve operating speed, and reduce workman's intensity of labour.

Description

Helium detection tool for expansion valve

Technical Field

The utility model belongs to the technical field of the detection device technique and specifically relates to a frock is examined to helium of expansion valve is related to.

Background

As shown in fig. 1, an expansion valve includes a plurality of air inlet holes and air outlet holes, the central lines of the air inlet holes and the air outlet holes are parallel, in a new product trial manufacturing stage, in order to test leakage parameters of the expansion valve, plugs are manually manufactured to completely plug the air inlet holes and the air outlet holes, then a hole filled with helium is drilled in one plug, if there is leakage, a helium mass spectrometer displays a data value, and thus a required qualified product is obtained. However, the method is only suitable for batch detection in the later period in the trial production stage with small quantity, and the method is very slow, so that the working efficiency of expansion valve detection is seriously reduced.

Therefore, a helium testing tool for an expansion valve is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

For solving above-mentioned problem comprehensively, especially to the not enough that prior art exists, the utility model provides a helium of expansion valve examines frock can solve above-mentioned problem comprehensively.

In order to achieve the above object, the utility model adopts the following technical means:

the helium detection tool for the expansion valve comprises a box body and a top cover arranged at the top of the box body, wherein the box body is connected with the top cover in a sealing manner, two groups of detection devices which are symmetrical front and back are arranged in the box body, each detection device comprises a guide rail, a first guide block, a second guide block, a charging basket, a material rack and plugging pieces located at two ends of the charging basket, the material rack is arranged in the charging basket and is spliced with the charging basket, the charging basket is arranged at the top end of the first guide block and is fixedly connected with the first guide block, the first guide block and the second guide block are both arranged at the top of the guide rail and are in sliding connection with the guide rail, and the guide rail is connected with the box body;

a vent hole is formed in the plugging piece at one end, a fixedly connected connecting piece is arranged on one side, away from the charging barrel, of the plugging piece at one end, one end of the connecting piece penetrates through the box body, a central hole is formed in the connecting piece, and the central hole of the connecting piece is communicated with the vent hole of the plugging piece at one end; the other end one side that the storage bucket was kept away from to the shutoff piece is provided with the cylinder that promotes its removal, the promotion end of cylinder is equipped with the stopper of rigid coupling, the stopper sets up in second guide block top and second guide block fixed connection, the stopper is equipped with the transition piece of joint with the opposite side of shutoff piece, the stopper passes through transition piece and the other end the shutoff piece is connected.

The utility model discloses further preferred scheme: the junction of box and connecting piece has seted up the mounting hole, the exhaust hole has been seted up to the bottom of box.

The utility model discloses further preferred scheme: the plugging piece comprises a fixing piece and a plug, and the fixing piece is fixedly connected with the plug.

The utility model discloses further preferred scheme: the material rack is characterized in that a positioning block is further arranged in the material barrel, and the material rack is connected with the material barrel through the positioning block in a positioning mode.

The utility model discloses further preferred scheme: the side of the material barrel close to the limiting block is provided with a connecting bolt fixedly connected, and the connecting bolt is in sliding insertion connection with the clamping part.

The utility model discloses further preferred scheme: the opposite side of transition piece and shutoff piece is seted up the spout, and the other end shutoff piece and spout sliding connection.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a set up two the same detection mechanism around to realize the purpose that detects fast, improve work efficiency, and utilize the cooperation operation of storage bucket, work or material rest, shutoff piece, further improve operating speed, and reduce workman's intensity of labour. The expansion valve is placed on a material rack in a charging basket under the retraction state of the front end of an air cylinder, when the expansion valve is placed, the direction of an air inlet hole and an air outlet hole of the expansion valve is consistent with the direction of a plug, the air cylinder is started, a limiting block, a transition block and a plugging piece located at one end of the air cylinder are pushed to move towards the charging basket until the plug of the plugging piece at one end is tightly matched with the air inlet hole and the air outlet hole, a top cover compresses a box body from top to bottom through equipment to achieve a sealing state, then air in the box body is exhausted and pumped out through the air outlet hole and then is filled into helium through a mounting hole to be tested, if the air is leaked, the helium connected with a tool can receive data, and whether the expansion valve is qualified is judged.

Drawings

The present invention will be described in further detail below with reference to the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of explaining the preferred embodiments, and therefore should not be taken as limiting the scope of the present invention. Furthermore, unless specifically stated otherwise, the drawings are merely schematic representations based on conceptual representations of elements or structures depicted and may contain exaggerated displays and are not necessarily drawn to scale.

Fig. 1 is a schematic structural diagram of an expansion valve in the background art of the present invention;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is an exploded view of the present invention;

FIG. 4 is a cross-sectional view of the side of the present invention;

fig. 5 is a schematic structural view of the plugging member of the present invention.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

As shown in fig. 2 to 5: the helium detection tool for the expansion valve comprises a box body 1 and a top cover 11 arranged at the top of the box body 1, wherein the box body 1 is in sealed connection with the top cover 11, two groups of detection devices which are symmetrical front and back are arranged in the box body 1, each detection device comprises a guide rail 3, a first guide block 4, a second guide block 5, a charging basket 8, a material rack 9 and plugging pieces 7 positioned at two ends of the charging basket 8, the material rack 9 is arranged in the charging basket 8 and is spliced with the charging basket 8, the charging basket 8 is arranged at the top end of the first guide block 4 and is fixedly connected with the first guide block 4, the first guide block 4 and the second guide block 5 are both arranged at the top of the guide rails 3 and are in sliding connection with the guide rails 3, and the guide rails 3 are connected with the box body 1;

a vent hole is formed in the plugging piece 7 at one end, a connecting piece 6 fixedly connected with the plugging piece 7 at one end far away from the charging bucket 8 is arranged at one side of the plugging piece 7, one end of the connecting piece 6 penetrates through the box body 1, a central hole is formed in the connecting piece 6, and the central hole of the connecting piece 6 is communicated with the vent hole of the plugging piece 7 at one end; the other end one side that storage bucket 8 was kept away from to shutoff piece 7 is provided with the cylinder 15 that promotes its removal, the promotion end of cylinder 15 is equipped with the stopper 14 of rigid coupling, stopper 14 sets up in second guide 5 top and second guide 5 fixed connection, stopper 14 is equipped with the transition piece 13 of joint with the opposite side of shutoff piece 7, stopper 14 passes through transition piece 13 and the other end shutoff piece 7 is connected.

The junction of the box body 1 and the connecting piece 6 is provided with a mounting hole 2, and the bottom of the box body 1 is provided with an exhaust hole 18. The mounting hole 2 can facilitate the mounting of the connecting piece 6 and the external connection of the connecting piece 6 with the inflating equipment; the exhaust hole 18 is convenient for the box body 1 to be connected with an air extraction device and is convenient for the box body 1 to exhaust internal gas.

The blocking piece 7 comprises a fixing piece 701 and a plug 702, wherein the fixing piece 701 is fixedly connected with the plug 702. The fixing part 701 can facilitate the plugging part 7 to be connected with an external structural part, and the plug 702 can facilitate the plugging part 7 to seal the air hole of the expansion valve.

A positioning block 10 is further arranged in the charging bucket 8, and the material rack 9 is connected with the charging bucket 8 through the positioning block 10 in a positioning mode. The setting can effectively improve the tightness of the material frame 9 after being connected with the material barrel 8, and can effectively complete the work of fixedly installing the expansion valve.

The opposite side of the limiting block 14 and the blocking piece 7 is further provided with a fixedly connected clamping part 16, the clamping part 16 is arranged at the bottom of the transition block 13, one side of the charging bucket 8 close to the limiting block 14 is provided with a fixedly connected connecting bolt 17, and the connecting bolt 17 is in sliding insertion connection with the clamping part 16. The arrangement can effectively position the moving direction of the limit block 14, and can effectively ensure that the limit block 14 presses the vent hole of the sealing bucket 8 of the plugging piece 7 under the pushing of the air cylinder 15.

The transition block 13 and the opposite side of the plugging piece 7 are provided with a sliding groove 12, and the plugging piece 7 and the sliding groove 12 are connected at the other end in a sliding manner. This kind of setting can be convenient for shutoff piece 7 and transition piece 13 are connected, can effectively improve the work efficiency that shutoff piece 7 later stage was with changing.

Description of the working principle:

under the retraction state of the front end of the air cylinder 15, the expansion valve is placed on the material rack 9 in the material barrel 8, when the expansion valve is placed, the direction of an air inlet hole and an air outlet hole of the expansion valve is consistent with the direction of the plug 702, the air cylinder 15 is started, the limiting block 14, the transition block 13 and the plugging piece 7 located at one end of the air cylinder 15 are pushed to move towards the material barrel 8 until the plug 702 of the plugging piece 7 at one end is tightly matched with the air inlet hole and the air outlet hole, the top cover 11 tightly presses the box body 1 from top to bottom through equipment to achieve a sealing state, then air in the box body 1 is exhausted and pumped out through the air outlet hole 18 and filled with helium through the mounting hole 2 to perform testing, and if leakage exists, a helium mass spectrometer connected with the tool receives data to judge whether the expansion valve is qualified or not. The two expansion valves can be detected at the same time, so that the rapid detection can be realized, and the detection efficiency is improved.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The above is to the utility model discloses going on the detailed introduction, having used specific individual example to right in this paper the utility model discloses a principle and implementation mode have been elucidated, and the explanation of above embodiment only is used for helping understanding the utility model discloses and core thought. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. The helium testing tool for the expansion valve is characterized by comprising a box body (1) and a top cover (11) arranged at the top of the box body (1), the box body (1) is hermetically connected with the top cover (11), two groups of detection devices which are symmetrical front and back are arranged in the box body (1), the detection device comprises a guide rail (3), a first guide block (4), a second guide block (5), a charging basket (8), a material rack (9) and plugging pieces (7) positioned at two ends of the charging basket (8), the material rack (9) is arranged in the charging basket (8) and is spliced with the charging basket (8), the charging basket (8) is arranged at the top end of the first guide block (4) and is fixedly connected with the first guide block (4), the first guide block (4) and the second guide block (5) are both arranged at the top of the guide rail (3) and are in sliding connection with the guide rail (3), and the guide rail (3) is connected with the box body (1);

a vent hole is formed in the plugging piece (7) at one end, a fixedly connected connecting piece (6) is arranged on one side, away from the charging bucket (8), of the plugging piece (7) at one end, one end of the connecting piece (6) penetrates through the box body (1), a central hole is formed in the connecting piece (6), and the central hole of the connecting piece (6) is communicated with the vent hole of the plugging piece (7) at one end; the other end one side that storage bucket (8) were kept away from in shutoff piece (7) is provided with cylinder (15) that promotes its removal, the promotion end of cylinder (15) is equipped with stopper (14) of rigid coupling, stopper (14) set up in second guide block (5) top and second guide block (5) fixed connection, stopper (14) are equipped with transition piece (13) of joint with the opposite side of shutoff piece (7), stopper (14) are through transition piece (13) and the other end shutoff piece (7) are connected.

2. The helium testing tool for the expansion valve as claimed in claim 1, wherein a mounting hole (2) is formed at the joint of the box body (1) and the connecting piece (6), and an exhaust hole (18) is formed at the bottom of the box body (1).

3. The helium testing tool for the expansion valve as claimed in claim 1, wherein the blocking piece (7) comprises a fixing piece (701) and a plug (702), and the fixing piece (701) is fixedly connected with the plug (702).

4. The helium testing tool for the expansion valve as claimed in claim 1, wherein a positioning block (10) is further arranged in the charging basket (8), and the material rest (9) is connected with the charging basket (8) in a positioning manner through the positioning block (10).

5. The helium testing tool for the expansion valve according to claim 1, wherein a clamping portion (16) fixedly connected is further arranged on the opposite side of the limiting block (14) and the blocking piece (7), the clamping portion (16) is arranged at the bottom of the transition block (13), a connecting bolt (17) fixedly connected is arranged on one side of the charging basket (8) close to the limiting block (14), and the connecting bolt (17) is in sliding insertion connection with the clamping portion (16).

6. The helium testing tool for the expansion valve according to claim 1, wherein a sliding groove (12) is formed in the opposite side of the transition block (13) and the plugging piece (7), and the plugging piece (7) is slidably connected with the sliding groove (12) at the other end.