CN211501687U - Valve gate - Google Patents

Abstract

The utility model relates to a valve. The valve comprises a valve seat with a valve core channel, a valve core and a cover cap. The valve seat includes a mounting end. The side wall of the mounting end is provided with a mounting opening communicated with the valve core channel. The side wall of the valve seat is also provided with a first opening and a second opening which are communicated with the valve core channel. The spool passage extends in the axial direction of the mounting port. The outer wall of the mounting end is formed with a sealing step along the circumferential direction of the mounting opening. One inner wall of the sealing step is a sealing surface, and the other inner wall is parallel to the outer wall of the mounting end. The included angle between the two inner walls of the sealing step is an acute angle. The valve core is accommodated and installed in the valve core channel. The valve core can slide along the extending direction of the valve core channel so as to block or communicate the first opening and the second opening. The cap has a cover opening. The inner wall of the cover cap is provided with a sealing bulge along the circumferential direction of the cover opening. The cap is sleeved on the mounting end and enables the sealing bulge to be in sealing contact with the sealing surface. Therefore, the reliability of the valve is high.

Description

Valve gate

Technical Field

The utility model relates to a pipeline annex technical field especially relates to a valve.

Background

With the rapid development of the manufacturing industry, the variety and application scenarios of the valve are more and more. In the use process of the valve, a very important index is the sealing performance. Generally, a valve includes a hollow valve seat and a valve core accommodated and installed in the valve seat, the valve seat is provided with an installation hole for installing the valve core, and the installation hole is sealed by a cap.

However, during valve transportation and the like, the sealing surface on the valve seat is easily damaged, so that the sealing performance between the valve seat and the cap is affected, and the reliability of the valve is not high.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a valve with high reliability to solve the problem of low reliability of the conventional valve.

A valve, comprising:

the valve seat comprises a mounting end, wherein a mounting port communicated with the valve core channel is formed in the side wall of the mounting end, a first opening and a second opening communicated with the valve core channel are further formed in the side wall of the valve seat, the valve core channel extends along the axial direction of the mounting port, a sealing step is formed on the outer wall of the mounting end along the circumferential direction of the mounting port, one inner wall of the sealing step is a sealing surface, the other inner wall of the sealing step is parallel to the outer wall of the mounting end, and an included angle between the two inner walls of the sealing step is an acute angle;

the valve core is accommodated and installed in the valve core channel, and the valve core can slide along the extension direction of the valve core channel so as to block or communicate the first opening and the second opening; and

the cap is provided with a cover opening, a sealing bulge is arranged on the inner wall of the cap along the circumferential direction of the cover opening, and the cap is sleeved on the mounting end and enables the sealing bulge to be in sealing contact with the sealing surface.

In one embodiment, the valve seat further has a first channel and a second channel that can be communicated with each other, the first channel and the second channel are both communicated with the valve core channel, the valve seat further includes a first end and a second end, the side walls of the first end and the second end are respectively provided with the first opening and the second opening that are communicated with the first channel and the second channel, and the valve core can slide along the extending direction of the valve core channel to block or communicate the first channel and the second channel.

In one embodiment, the cap comprises a top plate and a side plate arranged along the circumferential direction of the top plate, the top plate and the side plate are surrounded to form an accommodating cavity with the cover opening at one end, an inner wall of the accommodating cavity close to one end of the cover opening is provided with an inner thread, an outer wall of the mounting end is provided with an outer thread, and the outer thread is in threaded connection with the inner thread until the sealing protrusion is in sealing contact with the sealing surface.

In one embodiment, the sealing projection is pointed towards one end of the sealing surface.

In one embodiment, the valve further comprises a stop ring, the stop ring is received and mounted at one end of the valve core channel close to the mounting opening, and one end of the valve core facing the mounting opening can be abutted with the stop ring.

In one embodiment, the inner wall of the valve core channel is provided with a mounting groove along the circumferential direction of the mounting opening, and the stop ring is received and mounted in the mounting groove.

In one embodiment, the valve further comprises an annular elastic sealing element, the elastic sealing element is sleeved and fixed on the valve core, and the elastic sealing element can be in sliding sealing contact with the inner wall of the valve core channel along the extension direction of the valve core channel.

In one embodiment, the outer wall of the valve core is circumferentially formed with a mounting groove, and the elastic sealing member is received and held in the mounting groove.

In one embodiment, the valve is a stop valve for an air conditioner, the valve seat further includes a filling end, a filling hole respectively communicated with the valve core channel, the first opening and the second opening is further formed in a side wall of the filling end, and the stop valve further includes a valve core accommodated and installed in the filling hole.

In one embodiment, the sealing device further comprises a sealing cover, the sealing cover is a hollow structure with a containing cavity, a port communicated with the containing cavity is formed in the side wall of the sealing cover, and the filling end is detachably contained and installed in the containing cavity.

In the valve, because the included angle between the two inner walls of the sealing step is an acute angle, the sealing surface is in a concave state relative to the other inner wall of the sealing step, and the sealing surface is also in a concave state relative to the outer wall of the mounting end. In the process of valve transportation and the like, even if the valve collides with other objects, the sealing surface is not easily damaged, the probability of leakage at the contact position of the sealing protrusion in the cap and the sealing surface is greatly reduced, the sealing effect between the cap and the mounting end is effectively improved, and the reliability of the valve is higher.

Drawings

Fig. 1 is a schematic structural view of a valve according to a preferred embodiment of the present invention;

FIG. 2 is a schematic diagram of the valve seat of the valve of FIG. 1;

FIG. 3 is a schematic diagram of the cap of the valve of FIG. 1;

FIG. 4 is an enlarged view of a portion of the valve of FIG. 1;

FIG. 5 is a schematic diagram of the valve cartridge of the valve of FIG. 1;

fig. 6 is a schematic structural view of a sealing cover in the valve shown in fig. 1.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, a valve 10 according to a preferred embodiment of the present invention includes a valve seat 100, a valve core 200, and a cap 300. Wherein, the valve 10 can be a stop valve, a regulating valve, etc.

Referring also to fig. 2, the valve seat 100 has a valve element passage 110. The valve seat 100 includes a mounting end 120. The side walls of the mounting ends 120 are respectively opened with mounting ports 121 communicated with the valve core passage 110. The side wall of the valve seat 100 is further opened with a first opening 131 and a second opening 141 communicated with the valve core passage 110. The mounting opening 121 is mainly used to facilitate mounting of components in the valve seat 100. Specifically, one of the first opening 131 and the second opening 141 is an inlet, and the other is an outlet, so that in the use process of the valve 10, fluid flows in from the inlet and flows out from the outlet. The spool passage 110 extends in the axial direction of the mounting port 121.

In the usage environment with the fluid flowing direction unchanged, the inlet and the outlet of the valve 10 are fixed, that is, the fluid flows in from the first opening 131 and flows out from the second opening 141. In a use environment where the fluid flow direction changes, if the fluid flows in from the first opening 131 and flows out from the second opening 141 for a certain period of time, the fluid flows in from the second opening 141 and flows out from the first opening 131 for another period of time. For example, when the valve 10 is applied to a cooling/heating circuit of an air conditioner, fluid flows in from the first opening 131 and flows out from the second opening 141 during cooling, and fluid flows in from the second opening 141 and flows out from the first opening 131 during heating.

The outer wall of the mounting end 120 is formed with a sealing step 122 along the circumference of the mounting opening 121. One inner wall of the sealing step 122 is a sealing surface 1221 and the other inner wall is parallel to the outer wall of the mounting end 120. The angle between the two inner walls of the sealing step 122 is acute. That is, the included angle between the two inner walls of the sealing step 122 is greater than 0 degrees and less than 90 degrees. Thus, the angle between the sealing surface 1221 and the outer wall of the mounting end 120 is also acute. Therefore, the sealing surface 1221 is recessed with respect to the other inner wall of the sealing step 122. In the transportation process of the valve 10 and the like, the sealing surface 1221 is set to be relatively concave, so that the probability that the sealing surface 1221 is damaged by collision when the valve 10 collides with an external object can be reduced.

In this embodiment, the valve seat 100 further has a first passage 150 and a second passage 160 that are communicable with each other. The first and second passages 150, 160 are both in communication with the spool passage 110. The valve seat 100 also includes a first end 130 and a second end 140. The sidewalls of the first end 130 and the second end 140 are respectively opened with a first opening 131 and a second opening 141 communicated with the first channel 150 and the second channel 160. The valve spool 200 is slidable in the axial direction of the spool passage 110 to block or communicate the first passage 150 and the second passage 160. Specifically, the first channel 150 and the second channel 160 extend along the extending direction of the first opening 131 and the second opening 141, respectively. Further, the spool passage 110 and the second passage 160 are coaxially disposed, and the axis of the first passage 150 and the axis of the second passage 160 are perpendicular to each other, so that the mounting port 121 and the second opening 141 are respectively located at opposite ends of the valve seat 100.

Therefore, in the actual use process, the valve element 200 slides in the direction toward the mounting port 121 until the valve element 200 opens the first passage 150 and the second passage 160, and the first passage 150 and the second passage 160 are communicated, and at this time, the valve 10 is in an open state; the valve element 200 slides in a direction away from the mounting opening 121 until the valve element 200 completely blocks the first passage 150 and/or the second passage 160, such that the first passage 150 and the second passage 160 are not communicated, and the valve 10 is in a closed state.

Referring again to fig. 1, the valve cartridge 200 is received and mounted in the cartridge passage 110. Typically, the valve cartridge 200 is mounted in the cartridge passage 110 through the mounting port 121. The valve spool 200 is slidable in an extending direction of the spool passage 110 to block or communicate the first opening 131 and the second opening 141. Specifically, when the valve element 200 slides in a direction toward the mounting port 121 until the first opening 131 and the second opening 141 are communicated, the valve 10 is in an open state; when the valve element 200 slides in a direction away from the mounting opening 121 until the first and second openings 131 and 141 are blocked by the valve element 200, the valve 10 is in a closed state.

Referring to fig. 3 and 4, the cap 300 has a cap opening 320. The inner wall of the cap 300 is provided with a sealing protrusion 330 along the circumference of the cap opening 320. The cap 300 is positioned over the mounting end 120 and brings the sealing protrusion 330 into sealing contact with the sealing surface 1221. Thus, the cap 300 covering the mounting end 120 seals the mounting opening 121 of the mounting end 120, and prevents the fluid in the valve seat 100 from flowing out of the valve seat 100 through the mounting opening 121. Moreover, the cap 300 can prevent external impurities from entering the valve seat 100 through the mounting opening 121, thereby affecting the performance of the valve 10, and therefore the cap 300 can also effectively improve the reliability of the valve 10.

In the present embodiment, the cap 300 includes a top plate 340 and a side plate 350 disposed along a circumferential direction of the top plate 340. The top plate 340 and the side plate 350 enclose a receiving cavity 310 with a cover opening 320 at one end. The inner wall of the receiving cavity 310 near one end of the cover opening 320 is provided with internal threads 311. The outer wall of the mounting end 120 is provided with external threads 123. The external thread 123 is threaded with the internal thread 311 until the seal projection 330 abuts the sealing surface 1221.

Thereby, the male screw 123 is screwed with the female screw 311, so that the cap 300 seals the mounting opening 121. When it is desired to close the cap 300 to the mounting end 120, the cap 300 need only be tightened until the sealing protrusion 330 abuts the sealing surface 1221; when the cap 300 needs to be removed from the mounting end 120, the cap 300 can be opened only by twisting the cap 300 in the reverse direction. Therefore, the external thread 123 and the internal thread 311 are provided, so that the cap 300 is more convenient to assemble and disassemble.

In this embodiment, the end of the seal projection 330 facing the sealing surface 1221 is pointed. Thus, the line contact between the seal bead 330 and the sealing surface 1221 allows the seal bead 330 to be brought into sealing contact with the sealing surface 1221 with only a small force. Therefore, one end of the sealing protrusion 330 facing the sealing surface 1221 is set to be a sharp-angled structure, so that sealing between the sealing protrusion 330 and the sealing surface 1221 is easier, the probability of the situation that the sealing protrusion 330 and the sealing surface 1221 cannot be in good sealing contact due to the fact that the stress of the cap 300 is too small is greatly reduced, and the reliability of the valve 10 is effectively improved.

Since the included angle between the two inner walls of the sealing step 122 is an acute angle, the sealing surface 1221 is recessed with respect to the other inner wall of the sealing step 122. Since the other inner wall of the sealing step 122 is parallel to the outer wall of the mounting end 120, the sealing surface 1221 is also concave relative to the outer wall of the mounting end 120. In the transportation process of the valve 10, even if the valve 10 collides with other objects, the sealing surface 1221 is not easily damaged, so that the probability of leakage at the contact position of the sealing protrusion 330 and the sealing surface 1221 in the bonnet is greatly reduced, the sealing effect between the bonnet 300 and the mounting end 120 is effectively improved, and the reliability of the valve 10 is high.

Referring again to fig. 1, in the present embodiment, the valve 10 further includes a stop ring 400. The stop collar 400 is received and mounted in the valve spool passage 110 at an end thereof adjacent the mounting opening 121. An end of the valve spool 200 facing the mounting port 121 may abut the stopper ring 400. The stop ring 400 may be a semi-annular structure or an annular structure. Specifically, in this embodiment, the stop ring 400 is a circlip.

The valve core 200 slides in the direction toward the stop ring 400 until the valve core 200 abuts against the stop ring 400, at this time, the first opening 131 and the second opening 141 are communicated, and the valve 10 is in an open state; the valve element 200 slides in a direction away from the stop collar 400 until the valve element 200 blocks the first and second openings 131, 141, at which time the valve 10 is in a closed state. Thus, the stop ring 400 stops the valve element 200 to prevent the valve element 200 from sliding out of the mounting opening 121 in a direction toward the mounting opening 121. The stop ring 400 also allows for greater accuracy in the operation of the valve cartridge 200.

Referring to fig. 1 and 2 again, in the present embodiment, an installation groove 111 is formed on an inner wall of the valve core passage 110 along a circumferential direction. The stop ring 400 is received and mounted in the mounting groove 111. Since the stop ring 400 is abuttable with the valve core 200, an inner wall of the stop ring 400 protrudes from an inner wall of the valve core passage 110. The mounting groove 111 can axially limit the stop ring 400, so that the situation that the stop ring 400 slides towards the pocket width direction of the mounting opening 121 due to the fact that the valve 10 touches the stop ring 400 in the opening process of the valve 10 can be avoided, and the running reliability of the valve 10 is effectively improved. In addition, in the installation process of the stop ring 400, only the stop ring 400 needs to be installed in the installation groove 111, and the process of position alignment is omitted, so that the installation of the stop ring 400 is more convenient.

In this embodiment, the valve 10 further includes an elastomeric seal 500 in the form of a ring. The elastic sealing member 500 is sleeved and fixed on the outer wall of the valve core 200. And the elastic sealing member 500 is slidably in sealing contact with the inner wall of the spool passage 110 in the extending direction of the spool passage 110. Therefore, the elastic sealing member 500 mainly performs a sealing function between the inner wall of the valve core passage 110 and the outer wall of the valve core 200, so as to prevent the fluid in the valve seat 100 from flowing out of the mounting port 121 through the contact portion between the valve core passage 110 and the valve core 200, thereby preventing the fluid from leaking. The elastomeric seal 500 may be an O-ring, oil seal, or the like.

Therefore, in actual use, the elastic sealing member 500 seals against the first layer of fluid in the valve seat 100, and even if a small amount of fluid flows out of the mounting opening 121, the sealing protrusion 330 and the sealing surface 1221 cooperate with each other to perform the second layer of sealing against the portion of fluid leaking out of the mounting opening 121, and if a very small amount of fluid leaks out of the sealing protrusion 330 and the sealing surface 1221, the third layer of sealing against the fluid can be performed at the position where the inner wall of the receiving cavity 310 contacts the mounting end 120. Therefore, the elastic sealing member 500 is provided to further improve the sealing effect of the valve body.

Referring to fig. 5, in the present embodiment, a fitting groove 210 is formed on an outer wall of the valve element 200 along a circumferential direction. The elastic sealing member 500 is received and held in the fitting groove 210. Thus, the installation of the assembly groove 210 can reduce the probability that the elastic sealing member 500 slides in the axial direction with respect to the valve body 200, and effectively improve the sealing effect between the elastic sealing member 500 and the valve body 200. Moreover, in the installation process of the elastic sealing member 500, the installation of the elastic sealing member 500 on the valve core 200 can be completed only by sleeving the elastic sealing member 500 into the assembly groove 210 and clamping the elastic sealing member 500 and the assembly groove 210 with each other, so that the installation of the elastic sealing member 500 is more convenient due to the arrangement of the assembly groove 210.

The fitting groove 210 may be a groove formed by recessing the outer surface of the valve core 200, or a groove formed between two ribs spaced apart in the circumferential direction of the valve core 200 and the outer wall of the valve core 200.

Referring to fig. 1 again, in the present embodiment, the valve 10 is a stop valve for an air conditioner. The valve seat 100 also includes a filling end 170. The side wall of the filling end 170 is further opened with a filling hole 171 respectively communicating with the spool passage 110, the first opening 131 and the second opening 141. The shut-off valve also includes a valve core 600 received and mounted in the fill bore 171.

The shutoff valve is an important part of the air conditioning system and functions to open and close the refrigerant circulation passage. In the after-sale maintenance process of the air conditioner, a worker firstly extracts the refrigerant in the refrigerant flow channel through the valve core 600 and forms vacuum in the refrigerant flow channel so as to facilitate subsequent maintenance operation; after the maintenance is completed, the worker injects the refrigerant into the valve seat 100 through the valve core 600 to test the performance after the maintenance. Therefore, the valve core 600 is mainly used for evacuation after sale and for injecting the refrigerant into the valve seat 100, and also has a function of preventing the refrigerant in the valve seat 100 from leaking. Therefore, the valve core 600 is provided, so that the maintenance work of the air conditioner is more convenient.

Specifically, when the second passage 160 is disposed coaxially with the spool passage 110, the first passage 150 is disposed coaxially with the charge hole 171, and the axis of the first passage 150 is perpendicular to the axis of the second passage 160. Thus, the mounting end 120 and the second end 140 are opposite ends of the valve seat 100, and the first end 130 and the filling end 170 are opposite ends of the valve seat 100.

Referring to fig. 6, in a further embodiment, the valve 10 further includes a sealing cover 700. The sealing cover 700 has a hollow structure with a receiving cavity 700. The sidewall of the sealing cover 700 is opened with a port 720 communicating with the accommodating chamber 700. Filling end 170 is removably received within receiving cavity 700. Thus, the sealing cap 700 may be fitted over the filling end 170 when it is desired to evacuate the valve seat 100 and fill the valve seat with refrigerant. After a long time use, the valve core 600 inevitably leaks, and the sealing cover 700 covering the filling end 170 can still seal the leaked refrigerant. In addition, in the actual use process, the sealing cover 700 can also prevent external impurities, water and the like from entering the valve seat 100 through the valve core 600, so that the performance of the stop valve is influenced. Therefore, the sealing cover 700 not only improves the sealing effect of the stop valve, but also further improves the reliability of the stop valve.

Specifically, the sealing cap is removably coupled to the filling end 170 by a threaded connection.

In the valve 10, since the included angle between the two inner walls of the sealing step 122 is an acute angle, the sealing surface 1221 is recessed relative to the other inner wall of the sealing step 122, and the sealing surface 1221 is also recessed relative to the outer wall of the mounting end 120. In the transportation process of the valve 10, even if the valve 10 collides with other objects, the sealing surface 1221 is not easily damaged, so that the probability of leakage at the contact position of the sealing protrusion 330 and the sealing surface 1221 in the bonnet is greatly reduced, the sealing effect between the bonnet 300 and the mounting end 120 is effectively improved, and the reliability of the valve 10 is high.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A valve, comprising:

the valve seat comprises a mounting end, wherein a mounting port communicated with the valve core channel is formed in the side wall of the mounting end, a first opening and a second opening communicated with the valve core channel are further formed in the side wall of the valve seat, the valve core channel extends along the axial direction of the mounting port, a sealing step is formed on the outer wall of the mounting end along the circumferential direction of the mounting port, one inner wall of the sealing step is a sealing surface, the other inner wall of the sealing step is parallel to the outer wall of the mounting end, and an included angle between the two inner walls of the sealing step is an acute angle;

the valve core is accommodated and installed in the valve core channel, and the valve core can slide along the extension direction of the valve core channel so as to block or communicate the first opening and the second opening; and

the cap is provided with a cover opening, a sealing bulge is arranged on the inner wall of the cap along the circumferential direction of the cover opening, and the cap is sleeved on the mounting end and enables the sealing bulge to be in sealing contact with the sealing surface.

2. The valve according to claim 1, wherein the valve seat further has a first channel and a second channel that are capable of communicating with each other, and the first channel and the second channel are both communicated with the valve core channel, the valve seat further includes a first end and a second end, the side walls of the first end and the second end are respectively provided with the first opening and the second opening that are communicated with the first channel and the second channel, and the valve core is slidable along the extending direction of the valve core channel to block or communicate the first channel and the second channel.

3. The valve according to claim 1, wherein the cap comprises a top plate and a side plate arranged along the circumferential direction of the top plate, the top plate and the side plate are surrounded to form a containing cavity with the cap opening at one end, an inner wall of the containing cavity close to one end of the cap opening is provided with an internal thread, an outer wall of the mounting end is provided with an external thread, and the external thread is in threaded connection with the internal thread until the sealing protrusion is in sealing contact with the sealing surface.

4. The valve of claim 1 wherein said sealing projection is pointed toward one end of said sealing surface.

5. The valve of claim 1, further comprising a stop collar received and mounted in an end of the valve core passage adjacent the mounting opening, the end of the valve core facing the mounting opening being abuttable to the stop collar.

6. The valve of claim 5, wherein the inner wall of the valve core channel is provided with a mounting groove along the circumferential direction of the mounting opening, and the stop ring is received and mounted in the mounting groove.

7. The valve of claim 1, further comprising an annular elastic sealing member, wherein the elastic sealing member is sleeved and fixed on the valve element, and the elastic sealing member is slidably in sealing contact with an inner wall of the valve element channel along an extending direction of the valve element channel.

8. The valve of claim 7, wherein the outer wall of the valve element is formed with a fitting groove in a circumferential direction, and the elastic seal member is received and retained in the fitting groove.

9. The valve according to claim 1, wherein the valve is a stop valve for an air conditioner, the valve seat further comprises a filling end, a filling hole respectively communicating with the valve core channel, the first opening and the second opening is further formed in a side wall of the filling end, and the stop valve further comprises a valve core accommodated and installed in the filling hole.

10. The valve according to claim 9, further comprising a sealing cover, wherein the sealing cover is a hollow structure having a receiving cavity, a port communicating with the receiving cavity is opened on a side wall of the sealing cover, and the filling end is detachably received and installed in the receiving cavity.

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