CN114165632A

CN114165632A - Inflating mechanism

Info

Publication number: CN114165632A
Application number: CN202111209872.5A
Authority: CN
Inventors: 张和毅
Original assignee: Shanghai Size Automation Equipment Co ltd
Current assignee: Shanghai Size Automation Equipment Co ltd
Priority date: 2021-10-18
Filing date: 2021-10-18
Publication date: 2022-03-11

Abstract

The invention discloses an inflation mechanism, which comprises: the valve body is provided with an installation channel along the axis direction of the valve body; the valve core is slidably positioned in the installation channel along the axial direction of the valve body, an inflation channel penetrating through the valve core is arranged in the valve core, and the far end of the valve core is exposed outside the valve body; the hoop is operatively embraced outside the far end of the valve core and the far end of the valve body; the sealing element is sleeved outside the far end of the valve core and can be respectively and operatively abutted against the end face of the far end of the valve body and the valve core along the axial direction of the valve body; the valve body is provided with a gas injection channel, part of the valve core is communicated with the gas injection channel, and the part of the valve core communicated with the gas injection channel is positioned on one side of the gas injection channel, which is close to the near end of the valve core. The invention has the beneficial technical effects of convenient operation, cost reduction and reliable sealing performance.

Description

Inflating mechanism

Technical Field

The embodiment of the invention relates to the technical field of sealing, in particular to an inflating mechanism.

Background

In the prior art, helium filling vacuum helium detection is performed on a container pipe orifice, and the airtightness of the pipe orifice is detected. In order to detect the orifice, the orifice diameter of the container to be detected needs to be sealed and filled.

The existing detection method is water detection, namely, a container pipe orifice is welded, the container pipe orifice is integrally soaked in water, whether bubbles are generated is observed, and the container pipe orifice is cut off after the detection is finished. Therefore, a new plugging method is particularly needed to solve the existing problems.

Disclosure of Invention

The invention aims to provide an inflation mechanism, which has the beneficial technical effects of convenience in operation, cost reduction and reliable sealing performance.

To solve the above technical problem, an embodiment of the present invention provides an inflation mechanism, including:

the valve body is provided with an installation channel along the axis direction of the valve body;

the valve core is slidably positioned in the installation channel along the axial direction of the valve body, a gas charging channel penetrating through the valve core is arranged in the valve core, and the far end of the valve core is exposed outside the valve body;

the hoop is operably embraced outside the far end of the valve core and the far end of the valve body;

the sealing element is sleeved outside the far end of the valve core, and the sealing element can be respectively and operatively abutted against the end surface of the far end of the valve body and the valve core along the axial direction of the valve body;

the valve body is provided with a gas injection channel, part of the valve core is communicated with the gas injection channel, and the part of the valve core communicated with the gas injection channel is positioned on one side of the gas injection channel, which is close to the near end of the valve core.

In one embodiment, the hoop has a clamping portion on the inner annular surface, and the clamping portion is operatively clamped with the pipeline to be tested.

In one embodiment, a part of the outer annular surface of the distal end of the valve body extends in the radial direction of the valve body to form a boss, the inner annular surface of the hoop is provided with a groove which is in accordance with the shape of the boss, and the boss is operatively positioned in the groove.

In one embodiment, the seal comprises: the valve core comprises at least one support ring and at least one first sealing ring, wherein the at least one support ring and the at least one first sealing ring are alternately arranged along the axial direction of the valve core.

In one embodiment, the inflation mechanism further comprises: the second connector is detachably connected to the proximal end of the valve core, the second connector is in threaded connection with the inner wall of the valve core, which defines the inflation channel, and the shape of the second connector is matched with that of an external inflation device.

In one embodiment, the inflation mechanism further comprises: a third joint threadedly coupled to an inner wall of the valve body defining the gas injection channel.

In one embodiment, the inner wall of the valve body defining the mounting channel is provided with an annular groove coaxial with the mounting channel;

a part of the outer annular surface of the valve core extends into the annular groove along the radial direction to form a circle of flange, the flange is slidably arranged in the annular groove along the axial direction of the valve body and is abutted against the groove bottom of the annular groove to separate the annular groove into a first cavity and a second cavity, and the gas injection channel is communicated with the first cavity;

the inflation mechanism further includes: and the rebound piece is sleeved on the valve core, is positioned in the second chamber and is respectively abutted against the flange and the groove wall of the annular groove.

In one embodiment, the valve cartridge comprises:

the core body is slidably positioned in the valve body along the axial direction of the valve body, the core body is communicated with the gas injection channel, and the sealing element is sleeved outside the far end of the core body;

the first joint is detachably connected to the far end of the core body and is coaxially arranged with the core body, the first joint can be operably abutted against the sealing piece, and the shape of the abutted part of the first joint and the measured pipeline is matched with that of the measured pipeline;

wherein the inflation channel is partially located within the first connector and another portion is located within the core body.

In one embodiment, the inflation channel has a smaller aperture in the first connector than in the core body.

In one embodiment, the first joint comprises:

a connection pipe detachably connected to an inner wall of the core body defining the inflation channel;

the blocking ring is connected to the outer side of the connecting pipe in the diameter direction and abuts against the sealing element, the outer ring surface of the blocking ring abuts against the pipeline to be detected, and the shape of the outer ring surface of the blocking ring is matched with that of the pipeline to be detected.

In one embodiment, the first connector is a locking female connector.

In one embodiment, the valve body has at least one vent passage formed in an end surface of the proximal end thereof, the vent passage communicating with the second chamber.

In one embodiment, the valve body comprises: the valve body and the end cover are sequentially arranged along the axial direction of the valve body, and the end cover is detachably connected to the near end of the valve body;

the installation channel is positioned in the valve body, the other part of the installation channel is positioned in the end cover, and the gas injection channel and the annular groove are arranged on the valve body; the at least one exhaust passage is opened on the end cap.

In one embodiment, the inflation mechanism further includes a second sealing ring sleeved outside the flange, and the second sealing ring abuts against the flange and the groove bottom of the annular groove respectively.

In one embodiment, the inflation mechanism further comprises a third sealing ring sleeved outside the valve core;

the third sealing ring is abutted against the valve body and is positioned on one side of the gas injection channel, which faces the far end of the valve body.

The inflation mechanism at least has the following beneficial technical effects: the valve body and the valve core are used for building the inflation channel to be connected with the pipeline to be detected, the process that the pipeline opening needs to be welded in the past water detection is simplified, the manual operation is simple, the part to be detected can be separated from the valve core of the valve body after the detection is finished, the cutting operation is not needed, the part to be detected is prevented from being damaged, the valve core and the valve body can be repeatedly used, and the cost is reduced. In addition, the hoop is adopted to be embraced on the valve core and the valve body, the pipeline to be detected is attached to the valve core and the valve body to prevent falling off, and the sealing element is additionally used, so that the pipeline to be detected is sealed with the valve core, and the sealing performance is reliable. In addition, through setting up the gas injection passageway on the valve body, the gas injection passageway communicates with case part, the part that communicates at case and gas injection passageway is located near-end one side that the gas injection passageway is close to the case, when the gas injection in the gas injection passageway, the case can be by the distal end one side motion of atmospheric pressure in the gas injection passageway to the case, thereby extrude the sealing member of locating case and valve body counterbalance, the sealing member takes place to deform and locates on the case and the cover respectively and by the staple bolt hold the mouth of pipe of being surveyed the pipeline and produce the extrusion, thereby sealing performance obtains promoting.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.

FIG. 1 is an isometric view of an inflation mechanism of one embodiment of the present invention;

FIG. 2 is a schematic view of an inflation mechanism according to one embodiment of the invention;

FIG. 3 is a cross-sectional view of an inflation mechanism according to one embodiment of the invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present application in various embodiments of the present invention. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments.

In the following description, for the purposes of illustrating various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. One skilled in the relevant art will recognize, however, that the embodiments may be practiced without one or more of the specific details. In other instances, well-known devices, structures and techniques associated with this application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

Throughout the specification and claims, the word "comprise" and variations thereof, such as "comprises" and "comprising," are to be understood as an open, inclusive meaning, i.e., as being interpreted to mean "including, but not limited to," unless the context requires otherwise.

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings in order to more clearly understand the objects, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are merely intended to illustrate the spirit of the technical solution of the present invention.

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

As used in this specification and the appended claims, the singular forms "a", "an", and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally employed in its sense including "and/or" unless the context clearly dictates otherwise.

In the following description, for the purposes of clearly illustrating the structure and operation of the present invention, directional terms will be used, but terms such as "front", "rear", "left", "right", "outer", "inner", "outer", "inward", "upper", "lower", etc. should be construed as words of convenience and should not be construed as limiting terms. "distal" and "proximal" in "distal" and "proximal" herein are relative to the position of an operator of the inflation mechanism, i.e., "proximal" near the operator and "distal" away from the operator. The operator stands at one end of the detection gas inlet to operate, namely, one end connected into the detected pipeline is a far end.

In the center of the prior art, the air tightness detection method for the container is water detection, for example, air tightness detection is performed on an air conditioner radiator, a pipe orifice of the air conditioner radiator is welded, the air conditioner radiator is integrally soaked in water, whether bubbles are generated or not is observed, and the air conditioner radiator is cut off after the detection is finished.

Based on the above, the present invention provides an inflation mechanism, including: valve body, case, staple bolt and sealing member. The valve body is provided with an installation channel along the axis direction of the valve body. The valve core is slidably arranged in the installation channel along the axial direction of the valve body, the valve core is internally provided with an inflation channel penetrating through the valve core, and the far end of the valve core is exposed outside the valve body. The hoop is operatively positioned outside the distal end of the valve core and the distal end of the valve body. The sealing element is sleeved outside the far end of the valve core, and the sealing element can be respectively and operatively abutted against the end face of the far end of the valve body and the valve core along the axial direction of the valve body. The valve body is provided with a gas injection channel, part of the valve core is communicated with the gas injection channel, and the part of the valve core communicated with the gas injection channel is positioned on one side of the gas injection channel, which is close to the near end of the valve core. Through the arrangement, the problems of complex detection operation, high processing difficulty and high cost of the air tightness of the container in the prior art are solved, and the beneficial technical effects of cost reduction, convenient operation and reliable sealing performance are realized.

As shown in fig. 1, 2, and 3, the present invention provides an inflation mechanism including: valve body 1, case 2, staple bolt 3, sealing member 4. The valve body 1 is provided with a cylindrical installation channel along the axial direction, one ends of the valve body 1 and the valve core 2 close to the detection gas inlet are near ends, one ends of the valve body 1 and the valve core 2 far away from the detection gas inlet are far ends, namely, the detected pipeline 5 is positioned at the far end of the inflating mechanism. The valve core 2 is slidably positioned in the installation channel along the axial direction of the valve body 1, the valve core 2 is internally provided with an inflation channel penetrating through the valve core 2, and the part at the far end of the valve core 2 is exposed out of the valve body 1 and the periphery is circular. The hoop 3 is operatively embraced at the distal end of the valve core 2 and the distal end of the valve body 1. The sealing element 4 is sleeved outside the distal end of the valve element 2, and the sealing element 4 can respectively and operatively abut against the end surface of the distal end of the valve element 1 and the end surface of the distal end of the valve element 2 along the axial direction of the valve element 1. The valve body is provided with a gas injection channel 11, a part of the valve core 2 is communicated with the gas injection channel 11, and the part of the valve core 2 communicated with the gas injection channel 11 is positioned on one side of the gas injection channel 11 close to the near end of the valve core. Valve body 1 and 2 fixed mounting of case, during the use, will be surveyed on 5 covers of pipeline locate case 2 and valve body 1, then hold staple bolt 3 tightly to being surveyed on pipeline 5, make surveyed pipeline 5 fix on case 2, carry out the gas injection to gas injection passageway 11 after that, thereby the gas in the gas injection passageway 11 becomes many and then atmospheric pressure grow, promote the near-end one side motion of case 2 to the case, and this motion can extrude the emergence deformation to the sealing member 4 of locating case 2 and the terminal surface counterbalance of valve body 1, respectively to case 2 and cover establish on case 2 by staple bolt 3 hold tightly by survey pipeline 5 produce the extrusion, be surveyed pipeline 5 and the sealing connection of inflating mechanism this moment, aerify the passageway of aerifing of case 2 and can carry out the gas tightness detection. After the detection is finished, the inflation mechanism is stopped to be inflated, the ventilation of the gas injection channel 11 is stopped, the air pressure of the gas injection channel 11 is reduced, the valve core 2 moves towards one side of the far end of the valve core, the deformation generated by the extrusion of the sealing ring 4 is restored to the original state, and after the hoop 3 is separated from the pipeline 5 to be detected, the pipeline 5 to be detected can be easily separated from the valve core 2.

This embodiment is through utilizing valve body and case to build the inflation channel and being surveyed the pipe connection, has simplified the process that water detected in the past and need the welding pipeline mouth for manual operation is simple, and will be surveyed the pipeline and break away from the valve body case after waiting to detect to finish can and need not to carry out the operation of excision, also avoids producing the damage to being surveyed the pipeline, and the case valve body also can reuse, the cost is reduced. In addition, the hoop is adopted to be embraced on the valve core and the valve body, the pipeline to be detected is attached to the valve core and the valve body to prevent falling off, and the sealing element is additionally used, so that the pipeline to be detected is sealed with the valve core, and the sealing performance is reliable. In addition, through setting up the gas injection passageway on the valve body, the gas injection passageway communicates with case part, the part that communicates at case and gas injection passageway is located near-end one side that the gas injection passageway is close to the case, when the gas injection in the gas injection passageway, the case can be by the distal end one side motion of atmospheric pressure in the gas injection passageway to the case, thereby extrude the sealing member of locating case and valve body counterbalance, the sealing member takes place to deform and locates on the case and the cover respectively and by the staple bolt hold the mouth of pipe of being surveyed the pipeline and produce the extrusion, thereby sealing performance obtains promoting.

Furthermore, according to the inflation mechanism provided by the invention, the inner annular surface of the hoop can be further provided with a clamping part, and the clamping part can be operatively clamped with the pipeline to be tested. As shown in fig. 3, an engaging portion 31 is provided on an inner circumferential surface of the hoop 3, and the engaging portion 31 is operable to engage with the pipe 5 under test. Set up block portion maneuverability and surveyed the pipeline block for after being surveyed the pipeline cover and establishing on the case, when the case removed along its axis direction, block portion can restrict the case and the motion of being established the pipeline of being surveyed on the case by the cover, be unlikely to when the case moves because of the too big effort to the case of gas injection passageway internal gas pressure and then break away from the valve body. It should be understood that the clamping portion may not be provided on the inner annular surface of the hoop, and at this time, it is only necessary to control the air pressure in the air injection channel not to be too large, so that the valve core and the measured pipeline sleeved on the valve core are separated from the valve body, and the arrangement may be performed by those skilled in the art according to actual needs. Preferably, the shape of the inner ring surface of the hoop is matched with the shape of the pipeline to be measured, and the pipeline to be measured is sleeved on the valve core, so that the shape of the inner ring surface of the hoop is matched with the shape of the valve core, and the hoop can be set by a person skilled in the art according to actual needs.

In other embodiments, the outer annular surface of the distal end of the valve body partially extends in the radial direction of the valve body to form a boss, and the inner annular surface of the hoop is provided with a groove with a shape conforming to the boss, and the boss is operatively positioned in the groove. As shown in FIG. 3, the outer annular surface of the distal end of the valve body 1 is partially extended in the radial direction of the valve body 2 to form a boss 12, the inner annular surface of the hoop 3 is provided with a groove 32 conforming to the shape of the boss 12, and the boss 12 is operatively located in the groove 32. Through setting up boss 12 and recess 32 with staple bolt 3 and valve body 1 maneuverability's fixed, prevent that staple bolt and valve body break away from and then influence the gas tightness of mechanism of aerifing in operation process. The setting can be performed by those skilled in the art according to actual needs. Preferably, the terminal surface of the boss towards one side of the distal end of valve body is located the coplanar with the terminal surface of the distal end of valve body, and the processing of boss 12 is simple and easy more and the block effect of staple bolt and valve body is better this moment.

In one embodiment, the seal may comprise: the at least one support ring and the at least one first sealing ring are alternately arranged along the axial direction of the valve core. Specifically, as shown in fig. 3, the seal 4 includes two first seal rings 41 and two support rings 42, and the two first seal rings 41 and the two support rings 42 are alternately arranged in the axial direction of the spool 2. The first sealing ring is optionally made of elastic materials such as rubber and the like, and is matched with the outer wall of the valve core in shape to be attached to the valve core. The support ring is made of rigid material and is difficult to deform. Through setting up in turn the first sealing washer with the rigid material of elasticity material for when the sealing member is extruded, can absorb its deformation's the condition each other when being unlikely to take place to adopt a plurality of first sealing washers direct contact, under this embodiment, guaranteed that first sealing washer is along the radial deformation that takes place of case as far as possible, guarantee to inflate the sealing performance of mechanism. It should be understood that the support ring and the first sealing ring are not limited to two, and may be one or more than two, and those skilled in the art may set the support ring and the first sealing ring according to the length of the pipe orifice of the pipe to be measured contacting the valve element. In other embodiments, however, it is also possible to provide only one first sealing ring, which can also be used for this purpose.

The inflation mechanism may further include a second connector removably attached to the proximal end of the valve core, the second connector being threadably connected to an inner wall of the valve core defining the inflation channel, the second connector being shaped to fit the shape of the external inflation device. As shown in fig. 3 in particular, the second connector 6 is screwed to the inner wall of the valve core 2 defining the inflation channel, and the shape of the second connector 6 is adapted to the shape of the external inflation device. The second joint with outside aerating device adaptation will be connected on the case through detachable, can connect through the second of changing different specifications to the aerating device that the mechanism can adapt different specifications is aerifyd, simple to operate and greatly the cost is reduced, and technical staff in the field can set up according to actual need. The second joint is shown as a bent right-angle joint for facilitating the tightening of the second joint with the valve core, and the second joint may be alternatively configured in other shapes, such as a cylinder shape, by those skilled in the art. The second joint can be connected with the valve core in a buckling mode, other detachable connection modes can be adopted, and the second joint can be detachably connected with the valve core only.

In addition, the inflation mechanism can be provided with a third joint, and the third joint is in threaded connection with the inner wall of the valve body defining the gas injection channel. As shown in fig. 3, the third joint 7 is provided in threaded connection with the inner wall of the valve body 1 defining the gas-injection passage 11. Through detachably with third joint and valve body threaded connection, the external gas injection device of third joint, simple to operate not only can connect the third of different specifications according to the gas injection device of difference in addition, and the suitability is stronger, can practice thrift the cost simultaneously, makes be unlikely to the whole mechanism of aerifing of the gas injection passageway needs complete reproduction of different specifications. The setting can be performed by those skilled in the art according to actual needs. In addition, the third joint can also be connected with the valve body in a snap-fit mode or other detachable mode.

In addition, an annular groove coaxial with the installation channel is arranged on the inner wall of the valve body defining the installation channel; the outer ring surface of the valve body is partially extended into the annular groove along the radial direction to form a circle of flange, the flange is slidably arranged in the annular groove along the axial direction of the valve body and is abutted against the groove bottom of the annular groove to divide the annular groove into a first cavity and a second cavity, and the gas injection channel is communicated with the first cavity; the mechanism of aerifing still includes: the rebound piece is sleeved on the valve core, is positioned in the second chamber and is respectively abutted against the flange and the groove wall of the annular groove. As shown in fig. 3, an annular groove coaxial with the installation channel is formed on the inner wall of the installation channel defined by the valve body 1, a part of the outer annular surface of the valve core 2 extends into the annular groove along the radial direction to form a ring of flange 21, the flange 21 is slidably disposed in the annular groove along the axial direction of the valve body 1, the flange 21 abuts against the bottom of the annular groove to separate the annular groove into a first chamber (not shown) and a second chamber 13, and the gas injection channel 11 is communicated with the first chamber. The valve core 2 is further sleeved with a rebound part 22, and the rebound part 22 is located in the second chamber 13 and is respectively abutted against the flange 21 and the groove wall of the annular groove. Set up annular groove and flange, break away from the valve body when preventing that the case from moving along the axis direction, and set up the rebound spare in the second chamber, make the atmospheric pressure in the gas injection passageway change and make the case be unlikely to too acutely and then damage the case valve body and cause the case to break away from the valve body along the motion of axis direction, the rebound spare has the power of following the distal end motion of axis direction to the case in addition, make after the pipeline that awaits measuring detects and finishes, stop behind the gas injection to the gas injection passageway, the rebound spare can promote the valve core and reset to the initial position when the case does not take place the displacement, and the case also disappears with the extrusion of valve body to the sealing member, after breaking away from the staple bolt case valve body, the process that will await measuring the pipeline and break away from the case can be easier. The rebound piece is not required to be arranged, after the gas injection of the gas injection channel is stopped, the pressure difference between the second cavity and the first cavity can enable the valve core to move towards the far end along the axis direction, the resetting of the valve core after the detection is finished can also be realized, and a person skilled in the art can select whether to arrange the rebound piece according to actual needs.

Further, the valve cartridge may further include a cartridge body and a first joint. The core body is slidably arranged in the valve body along the axial direction of the valve body, the core body is communicated with the gas injection channel, and the sealing element is sleeved outside the far end of the core body. The first joint is detachably connected to the far end of the core body and is coaxially arranged with the core body, the first joint can be operably abutted against the sealing piece, and the shape of the abutted part of the first joint and the pipeline to be detected is matched with the shape of the pipeline to be detected. The inflation channel is partially located within the first connector and the other portion is located within the core body. As shown in fig. 3, the valve core 2 is composed of a core body 23 and a first joint 24, the core body 23 is slidably located in the valve body 1 along the axial direction of the valve body 1, the core body 23 is communicated with the gas injection channel 11, the sealing member 4 is sleeved outside the distal end of the core body 23, the first joint 24 is detachably connected to the distal end of the core body 23 and is coaxially arranged with the core body 23, the first joint 24 is operably abutted to the sealing member 4, and the shape of the portion abutted to the measured pipe 5 of the first joint 24 is adapted to the shape of the measured pipe 5. The inflation channel is located partially within the first connector 24 and partially within the core body 23. Through setting the case to the structure of core body and first joint, thereby can select the not measured pipeline of different specifications of specification adaptation according to the size of the pipeline that is measured, practice thrift the cost.

Preferably, the inflation channel has a smaller aperture in the first connector than in the core body. Specifically, as shown in fig. 3, the bore diameter of the first joint 24 is smaller than the bore diameter of the core body 23. Through this setting, when testing by the survey pipeline, let in the detection gas to aerifing the mechanism, then detect gas by the near-end flow direction distal end, from the first joint of core body flow direction and flow direction in by the survey pipeline in proper order promptly, the aperture of core body is greater than first joint aperture this moment and the aperture of gas flow direction diminishes, can effectively prevent the gas refluence, and technical personnel in the field can set up according to actual need.

Further, the first joint comprises a connecting pipe and a blocking ring. The connecting tube is detachably connected with the inner wall of the core body defining the inflation channel. The blocking ring is connected to the radial outer side of the connecting pipe and abuts against the sealing element, the outer annular surface of the blocking ring abuts against the pipeline to be detected, and the shape of the outer annular surface of the blocking ring is matched with the shape of the pipeline to be detected. As shown in fig. 3, the first connection head 24 includes a connection pipe 241 and a blocking ring 242. The connection tube 241 is detachably connected with the inner wall of the core body 23 defining the inflation channel. The blocking ring 242 is connected to the radial outer side of the connecting pipe 241 and abuts against the sealing element 4, the outer annular surface of the blocking ring 242 abuts against the measured pipeline 5, and the shape of the outer annular surface of the blocking ring 242 is matched with the shape of the measured pipeline 5. Set up first joint into connecting pipe and stifled ring, connecting pipe and this body coupling of core, can come the measured pipeline of the different specifications of adaptation through the stifled ring of changing different specifications this moment, the suitability is stronger, has also practiced thrift manufacturing cost simultaneously, and the technical staff in the field can set up according to actual need.

Alternatively, the first connector may be a locking female connector. In the traditional working condition, the locking female joint is only used for being fixedly connected with another object through threads, and in the invention, the inventor finds that the outer diameters of different locking female joints are different, but in the technical problem to be solved, the locking female joints with various specifications can be suitable for being connected with a pipeline to be tested and sleeved on the outer wall by the locking female joint, and in addition, the locking female joint can be conveniently obtained from the market, so that the inflating mechanism of the invention does not need to process a first joint, and the production flow is simplified. The selection can be made by those skilled in the art according to actual needs.

Preferably, the end face of the proximal end of the valve body is provided with at least one exhaust passage, and the exhaust passage is communicated with the second chamber. As shown in fig. 1 and 3, four exhaust passages 14 are opened on the proximal end surface of the valve body 1, and the exhaust passages 14 communicate with the second chamber 13. Through setting up the exhaust passage for the second chamber is with atmospheric pressure, and when the pressure in the gas injection passageway changed, the second chamber remains fixed pressure throughout, then changes the pressure to the gas injection passageway and thereby drives the motion of case and be unlikely to influenced by the pressure change that the second chamber leads to because of the volume change. In the present invention, the number of the exhaust passages is not limited to four, and one, two, three, or more than four exhaust passages may be provided, and it is only necessary to communicate the second chamber with the outside air without departing from the scope of the present invention.

The valve body can also comprise a valve body and an end cover which are sequentially arranged along the axial direction of the valve body, and the end cover is detachably connected to the near end of the valve body; the installation channel is positioned in the valve body, the other part of the installation channel is positioned in the end cover, and the gas injection channel and the annular groove are arranged on the valve body; at least one exhaust passage is opened in the end cap. As shown in fig. 1, 2 and 3, the valve body 1 includes a valve body 15 and an end cap 16, which are sequentially arranged along the axial direction of the valve body 1, the end cap is detachably connected to the proximal end of the valve body 15, wherein the installation channel portion is located in the valve body 15, the other portion is located in the end cap 16, the gas injection channel 11 and the annular groove are provided on the valve body 15, and the four exhaust channels 14 are provided on the end cap. Establish the valve body into valve body and end cover two parts for case and valve body installation can be earlier with case and valve body installation after fixed with the end cover rather than fixed, the degree of difficulty greatly reduced of installation this moment. The end cover can be connected with the valve body by adopting a bolt connection mode, the number of the exhaust passages is not limited to four, and the exhaust passages can be arranged according to actual needs by a person skilled in the art.

The inflation mechanism can also comprise a second sealing ring sleeved outside the flange, and the second sealing ring is respectively propped against the flange and the groove bottom of the annular groove. As shown in fig. 3, a second seal ring 211 is fitted around the flange 21, and the second seal ring 211 abuts against the flange 21 and the groove bottom of the annular groove. Through setting up the second sealing washer here for it is sealed mutually between case and the valve body, prevents that the gas in the gas injection passageway from revealing through the clearance between case and the valve body. The setting can be carried out by the person skilled in the art according to the actual need.

The inflation mechanism can also comprise a third sealing ring sleeved outside the valve core, and the third sealing ring is abutted against the valve body and is positioned on one side of the gas injection channel, which faces the far end of the valve body. As shown in fig. 3, the third sealing ring 25 is sleeved on the outer wall of the valve core 2, and the third sealing ring 25 abuts against the valve body 1 and is located on one side of the gas injection channel facing the distal end of the valve body 1. Through setting up the third sealing washer, prevent that the gas in the gas injection passageway from revealing and then influencing the testing result through the clearance between case and the valve body, technical staff in the field can set up according to actual need.

The above embodiments are merely illustrative of the preferred aspects of the present invention and are not intended to limit the present invention.

The inflation mechanism solves the problems that in the prior art, the air tightness detection method for the container is water detection, for example, air tightness detection is carried out on an air conditioner radiator, a pipe orifice of the air conditioner radiator is welded, the air conditioner radiator is integrally soaked in water, whether bubbles are generated or not is observed, and the air conditioner radiator is cut off after the detection is finished. And the like.

The invention has the following beneficial technical effects:

the valve body and the valve core are used for building the inflation channel to be connected with the pipeline to be detected, the process that the pipeline opening needs to be welded in the past water detection is simplified, the manual operation is simple, the part to be detected can be separated from the valve core of the valve body after the detection is finished, the cutting operation is not needed, the part to be detected is prevented from being damaged, the valve core and the valve body can be repeatedly used, and the cost is reduced. In addition, the hoop is adopted to be embraced on the valve core and the valve body, the pipeline to be detected is attached to the valve core and the valve body to prevent falling off, and the sealing element is additionally used, so that the pipeline to be detected is sealed with the valve core, and the sealing performance is reliable. In addition, through setting up the gas injection passageway on the valve body, the gas injection passageway communicates with case part, the part that communicates at case and gas injection passageway is located near-end one side that the gas injection passageway is close to the case, when the gas injection in the gas injection passageway, the case can be by the distal end one side motion of atmospheric pressure in the gas injection passageway to the case, thereby extrude the sealing member of locating case and valve body counterbalance, the sealing member takes place to deform and locates on the case and the cover respectively and by the staple bolt hold the mouth of pipe of being surveyed the pipeline and produce the extrusion, thereby sealing performance obtains promoting.

While the preferred embodiments of the present invention have been illustrated and described in detail, it should be understood that various changes and modifications of the invention can be effected therein by those skilled in the art after reading the above teachings of the invention. Such equivalents are intended to fall within the scope of the claims appended hereto.

Claims

1. An inflation mechanism, comprising:

2. The inflation mechanism of claim 1, wherein the hoop has a snap-fit portion on an inner circumferential surface thereof, the snap-fit portion being operatively engaged with the pipe under test.

3. The inflation mechanism of claim 2, wherein the shape of the inner annular surface of the hoop is adapted to the shape of the pipe to be tested.

4. The inflation mechanism of claim 1, wherein the outer annular surface of the distal end of the valve body partially extends in a radial direction of the valve body to form a protrusion, and the inner annular surface of the hoop has a recess conforming to the shape of the protrusion, the protrusion being operatively positioned in the recess.

5. The inflation mechanism of claim 1, wherein the seal comprises: the valve core comprises at least one support ring and at least one first sealing ring, wherein the at least one support ring and the at least one first sealing ring are alternately arranged along the axial direction of the valve core.

6. The inflation mechanism of claim 1, further comprising: the second connector is detachably connected to the proximal end of the valve core, the second connector is in threaded connection with the inner wall of the valve core, which defines the inflation channel, and the shape of the second connector is matched with that of an external inflation device.

7. The inflation mechanism of claim 1, further comprising: a third joint threadedly coupled to an inner wall of the valve body defining the gas injection channel.

8. The inflation mechanism of claim 1, wherein the valve body defines an annular groove on an inner wall of the mounting channel coaxial with the mounting channel;

9. The pumping mechanism of claim 1, wherein the valve spool comprises:

10. The inflation mechanism of claim 9, wherein the inflation channel has a smaller aperture in the first connector than in the core body.