CN215059577U

CN215059577U - Valve device

Info

Publication number: CN215059577U
Application number: CN202120839383.7U
Authority: CN
Inventors: 不公告发明人
Original assignee: Zhejiang Sanhua Intelligent Controls Co Ltd
Current assignee: Zhejiang Sanhua Intelligent Controls Co Ltd
Priority date: 2021-04-22
Filing date: 2021-04-22
Publication date: 2021-12-07
Anticipated expiration: 2031-04-22

Abstract

The utility model relates to a valve device, which is provided with a containing cavity, comprising a valve body, a valve rod component, a connecting pipe nut and a valve cap, wherein the valve body comprises a body part and an extension part, the extension part protrudes downwards from the body part, the connecting pipe nut is connected with a first part of the body part through threads, the valve cap is matched with a second part of the body part through threads, and the valve rod component is positioned in the containing cavity; the body part is provided with a first circulation channel, the extension part is provided with a second circulation channel, the body part further comprises a valve port part, the valve rod assembly can be close to or far away from the valve port part so as to block or communicate the first circulation channel and the second circulation channel, and the central line of the valve rod assembly and the central line of the valve port part are approximately coaxially arranged with the central line of the adapter nut. The valve device is simple in structure, and after the connection of the connecting pipe nut is completed, the situation that leakage occurs due to uneven stress between the valve rod and the valve port when the valve rod is matched with the valve port can be avoided.

Description

Valve device

Technical Field

The utility model relates to a refrigeration control technical field, concretely relates to valve gear.

Background

The idle call low-pressure valve device mainly connects indoor outdoor unit and uses, and valve device includes the valve body and locates valve rod and disk seat in the valve body, and the disk seat sets firmly in the valve body and is equipped with the valve port portion, and the valve rod can with the valve port portion between seal or break away from to realize valve device's break-make.

Therefore, how to provide a valve device with a simpler structure is a technical problem to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a valve gear, the structure is comparatively simple to after taking over nut ann and connecting the completion, can avoid the valve rod when coordinating with valve port portion, lead to the condition of taking place to leak between valve rod and the valve port portion because the atress is uneven.

In order to solve the technical problem, the utility model provides a valve device, it is equipped with and holds the chamber, including valve body, valve rod assembly, takeover nut and valve cap, the valve body includes body portion and extension, the extension is protruding downwards from the body portion, takeover nut and the first threaded connection of body portion, the valve cap and the second threaded fit of body portion, valve rod assembly is located hold the chamber;

the main body part is provided with a first circulation channel, the extension part is provided with a second circulation channel, the main body part further comprises a valve port part, the valve rod assembly can approach or be far away from the valve port part to block or communicate the first circulation channel and the second circulation channel, and the central line of the valve rod assembly, the central line of the valve port part and the central line of the adapter nut are arranged approximately coaxially.

When the valve device is installed, the valve body is installed through the installation plate, then the valve body is connected with an indoor unit pipeline through the connecting pipe nut, the connecting pipe nut is required to be rotated to complete connection with the indoor unit pipeline, in order to guarantee the sealing performance of pipeline connection, the connecting pipe nut is required to guarantee the screwing state, in the process, the body part is inevitably driven to rotate to a certain degree, however, as the connecting pipe nut, the valve rod assembly and the valve port part are coaxially arranged, even if the body part rotates along with the rotation of the connecting pipe nut, the valve port part only rotates around the axis of the body part along with the body part, and the valve port part is used for a matching surface which is in sealing fit with the valve rod assembly and does not change, so that the situation that when the valve rod assembly is matched with the valve port part, all parts are uniformly stressed, the sealing performance is good, and leakage is avoided.

Drawings

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

FIG. 2 is a cross-sectional view of the valve assembly with the valve stem in a fully closed condition;

FIG. 3 is a cross-sectional view of the valve assembly with the valve stem in a fully open condition;

FIG. 4 is a cross-sectional view of the valve body;

FIG. 5 is a cross-sectional view of a valve stem and valve assembly;

fig. 6 is a sectional view of the jack.

In the accompanying fig. 1-6, the reference numerals are illustrated as follows:

1-valve body, 11-body part, 111-first part, 112-second part, 12-extension part, 13-installation cavity, 14-internal thread section;

2-valve rod, 21-sealing end, 211-sealing conical surface, 22-external thread section, 23-driving end, 231-driving hole, 24-mounting hole, 25-matching sealing surface, 26-sealing part and 27-first limit structure;

31-a first flow-through channel, 32-a second flow-through channel;

4-a pipe connection nut;

5-valve port part;

6-first sealing ring;

7-a retainer ring;

8-valve cap;

9-valve gear, 91-ejector rod, 911-installation groove, 912-guide section, 92-spring, 93-second sealing ring, 94-gasket, 95-annular bulge and 96-annular stopper;

10-mounting the plate.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

The embodiment of the utility model provides a valve device, as shown in fig. 1-3, this valve device is equipped with and holds the chamber, specifically includes valve body 1, valve rod assembly, takeover nut 4 and valve cap 8, and wherein, valve body 1 includes body 11 and extension 12, and extension 12 is from body 11 downwardly protruding, and body 11 includes first portion 111 and second portion 112, and takeover nut 4 and first portion 111 threaded connection, valve cap 8 and second portion 112 screw-thread fit are connected, and valve rod assembly is located and holds the intracavity.

The body 11 is provided with a first flow passage 31, the extension 12 is provided with a second flow passage 32, the body 11 further comprises a valve port 5, and the valve stem assembly can approach or depart from the valve port 5 to open and close the valve device. Specifically, when the valve stem assembly approaches the valve port portion 5 and is sealingly engaged with the valve port portion 5, the first communicating path 31 and the second communicating path 32 are blocked, and the valve device is in the open state, and when the valve stem assembly is away from the valve port portion 5 and is disengaged from the valve port portion 5, the first communicating path 31 and the second communicating path 32 are communicated, and the valve device is in the open state. The central line of the valve stem assembly, the central line of the valve port portion 5 and the central line of the adapter nut 4 are arranged approximately coaxially, which means that the three components may be coaxial or the maximum included angle between the axes of the three components is within a preset angle range (e.g. 5 °, 10 °, 15 °).

Specifically, the valve device further comprises a mounting plate 10, the mounting plate 10 is fixed relative to the valve body 1, when the valve device is mounted, the valve body 1 is mounted through the mounting plate 10, then the valve device is connected with an indoor unit pipeline through a connecting pipe nut 4, specifically, the connecting pipe nut 4 needs to be rotated to complete connection with the indoor unit pipeline, in order to ensure the sealing performance of pipeline connection, the connecting pipe nut 4 needs to be in a screwing state, and in the process, the body part 11 is inevitably driven to rotate to a certain degree, but because the connecting pipe nut 4, the valve rod assembly and the valve port part 5 are arranged approximately coaxially, even if the body part 11 rotates along with the rotation of the connecting pipe nut 4, the valve port part 5 only rotates along with the axis of the body part 11, and the matching surface of the valve port part 5 for sealing matching with the valve rod assembly does not change, so that when the valve rod assembly is matched with the valve port part 5, the stress is even everywhere, and sealing performance is good, avoids taking place the condition of leaking.

Be equipped with the installation cavity 13 that is used for installing valve rod assembly in the valve body 1, valve rod assembly specifically includes valve rod 2, the outer wall of this valve rod is equipped with external screw thread section 22 (as shown in fig. 5), the inner wall of installation cavity 13 also corresponds and is equipped with internal thread section 14 (as shown in fig. 4), external screw thread section 22 with locate the 14 screw-thread fit of internal thread section in installation cavity 13, and the accessible rotates in order to realize valve rod 2's rectilinear movement, still be equipped with the sealing along circumference between the outer wall of valve rod 2 and the inner wall of installation cavity 13, in order to realize sealedly between the two, it is specific, the sealing includes the first sealing washer 6 that sets up between the outer wall along drive end 23 and the inner wall of installation cavity 13, this first sealing washer 6 can be sealed from the inner wall of drive end 23 with installation cavity 13, avoid the medium in the valve body 1 to be revealed by installation cavity 13 department.

Specifically, the valve rod 2 includes a sealing end 21 and a driving end 23, wherein the sealing end 21 is used for being sealed with the valve port portion 5 in a matching manner, and the driving end 23 is used for driving the valve rod 2 to rotate, so that the linear movement of the valve rod 2 is realized to drive the sealing end 21 to be matched with or separated from the valve port portion 5. As shown in fig. 5, the sealing portion further includes a sealing tapered surface 211 disposed at the sealing end 21, and when the sealing tapered surface 211 is engaged with the valve port 5, the sealing tapered surface can seal the valve port 5, so that the valve device reaches a closed state.

The tip of installation cavity 13 still is equipped with retaining ring 7, the sealing portion still includes the cooperation sealed face 25 with retaining ring 7 looks adaptation, drive end 23 is located to this cooperation sealed face 25, drive end 23 drive valve rod 2 rotates and drives when sealed conical surface 211 breaks away from with valve opening portion 5, this valve rod 2 moves to one side of retaining ring 7, when the cooperation sealed face 25 of drive end 23 cooperates with retaining ring 7, it says that first circulation passageway 31 and second circulation passageway 32 are opened completely, and can form one sealed once again between cooperation sealed face 25 and the retaining ring 7, namely, at this moment, there is twice sealed between valve rod 2 and the installation cavity 13, sealed and the cooperation sealed face 25 that the first sealing washer 6 formed and the sealed between the retaining ring 7, further guarantee sealed effect, avoid the medium to leak.

In the above embodiment, the driving end 23 is provided with the driving hole 231, the driving hole 231 may be used to drive the valve rod 2 to rotate, the sealing end 21 is provided with the mounting hole 24 along the axial direction thereof, the mounting hole 24 may be communicated with the driving hole 231, and the mounting hole 24 and the driving hole 231 may form a third flow channel for filling the first flow channel 31 with the refrigerant, the valve rod assembly further includes the valve device 9 disposed in the third flow channel, wherein the valve device 9 is used to control on/off of the third flow channel, and an external device may fill the first flow channel 31 with the refrigerant through the third flow channel. Specifically, when the valve device 9 is in an open state, the first circulation passage 31 and the third circulation passage are communicated, the refrigerant can enter the first circulation passage 31 sequentially from the driving hole 231 and the mounting hole 24, so that the refrigerant is filled, and when the valve cap 8 is arranged at the end of the mounting cavity 13, the valve cap 8 can be detached when the refrigerant is filled. That is to say, in the embodiment, the third flow passage for filling the refrigerant is integrated in the valve rod 2, so that compared with the valve device with the three-way structure in the prior art, the overall structure of the valve device can be simplified, the overall volume can be reduced, and the cost can be reduced.

Specifically, in this embodiment, the specific shape of the driving hole 231 is not limited, and may be a polygonal hole structure such as a hexagon socket hole or a square hole, or may be a circular hole, and the hole wall of the circular hole may be provided with a groove structure along the axial direction.

The valve device 9 in this embodiment includes a jack 91, a spring 92 and a second seal ring 93, wherein the push rod 91 is arranged along the axial direction of the mounting hole 24 and can move along the axial direction of the mounting hole 24, a flow gap is left between the outer wall of the push rod 91 and the inner wall of the mounting hole 24, in detail, the outer wall of the push rod 91 is provided with a mounting part, the mounting part is provided with a second sealing ring 93 along the circumferential direction, the inner wall of the mounting hole 24 is also provided with a sealing part 26 along the circumferential direction, one end of the mounting hole 24 far away from the driving hole 231 is also provided with a first limiting structure 27 along the circumferential direction, the spring 92 is in a compressed state and is tightly pressed between the first limiting structure 27 and the end part of the ejector rod 91, the spring 92 is in a compressed state and can provide power to the push rod 91, so that the push rod 91 moves to one side of the driving hole 231, the sealing part 26 can limit the push rod 91, and the second sealing ring 93 can be attached to the sealing part 26 to realize sealing.

When it is necessary to fill the medium into the first flow channel 31 through the third flow channel, the valve device 9 is opened by pushing the push rod 91 from the side of the driving hole 231 to move to the side of the mounting hole 24 until the second seal ring 93 is separated from the seal portion 26, and the external medium can flow into the first flow channel 31 along the driving hole 231 and the flow gap because a flow gap is left between the outer wall of the push rod 91 and the inner wall of the mounting hole 24.

Of course, in this embodiment, the valve device 9 may be provided as a valve core, and when the third flow passage is opened and closed by the structure of the stem rod 91, the spring 92, and the second seal ring 93, the entire structure can be simplified and the cost can be reduced.

Further, the inner wall of the mounting hole 24 further includes a taper hole section, the inner diameter of one side of the taper hole section facing the mounting hole 24 is larger than the inner diameter of one side of the drive hole 231, the inner wall of the taper hole section is of a conical surface structure, the conical surface structure forms the sealing portion 26, and the second sealing ring 93 can be attached to the conical surface structure to achieve sealing. The outer wall of ejector pin 91 is along circumference to still being equipped with mounting groove 911, this mounting groove 911 forms above-mentioned installation department, second sealing washer 93 is located this mounting groove 911, and mounting groove 911 highly is less than the height of second sealing washer 93 towards the lateral wall of one side of drive hole 231, so set up, can make second sealing washer 93 spill towards one side of drive hole 231, it cooperates with the conical surface structure to be convenient for, avoid the cell wall of mounting groove 911 direct and the butt of conical surface structure and influence conical surface structure and the cooperation of second sealing washer 93, and then guarantee sealed effect. In addition, as shown in fig. 6, the height of the side wall of the mounting groove 911 away from the driving hole 231 is consistent with the thickness of the second sealing ring 93, so that the second sealing ring 93 can be matched with the tapered surface structure and clamped between the groove wall and the tapered surface structure of the mounting groove 911, and the sealing effect can be ensured.

Of course, in this embodiment, specific structures of the mounting portion and the sealing portion 26 are not limited, and if the wall surfaces of the mounting portion and the sealing portion 26 opposite to each other are both set to be planar structures, a groove structure for mounting the second sealing ring 93 is provided on a side wall of the mounting portion facing the driving hole 231, and the second sealing ring 93 and the planar structure of the sealing portion 26 are both in fit sealing. And set up the installation department to when the seal groove that sets up along the outer wall circumference of ejector pin 91, can carry on spacingly to second sealing washer 93, prevent that second sealing washer 93 from carrying out many times cooperation with sealing 26 and sealing and breaking away from the back, taking place the condition that breaks away from with ejector pin 91, guarantee life. In addition, the second seal ring 93 may be mounted on the sealing portion 26 and may be capable of sealing with the mounting portion in a fitting manner, and when the second seal ring 93 is mounted on the mounting portion of the push rod 91, the mounting operation of the second seal ring 93 is facilitated, specifically, the second seal ring 93 and the push rod 91 are mounted in the mounting hole 24 after being mounted.

The end of the mounting hole 24 is riveted inwards along the radial direction to form the first limiting structure 27, and a gasket 94 is further arranged between the first limiting structure 27 and the spring 92, or in this embodiment, the annular enclosure can be processed at the end of the mounting hole 24 to form the first limiting structure 27, and when the first limiting structure 27 is set to be a riveting structure, the riveting operation can be performed after the valve device 9 is installed in the mounting hole 24, so that the valve device 9 is convenient to install, meanwhile, the gasket 94 can be conveniently arranged to be stable with the spring 92, and the riveting structure only needs to limit the gasket 94, so that the process requirements are simplified.

In addition, as shown in fig. 6, a guide section 912 is further disposed at one end of the ejector rod 91 facing the spring 92, the spring 92 is sleeved outside the guide section 912, and the guide section 912 is disposed to avoid the spring 92 from being crushed after being compressed for multiple times, so as to ensure the service life of the spring 92 and the driving force of the ejector rod 91.

Specifically, in the present embodiment, as shown in fig. 6, the ejector 91 includes a large diameter section and a small diameter section, wherein the large diameter section forms one side wall of the mounting groove 911 toward one side wall of the small diameter section, and the diameter of the large diameter section is the same as that of the second sealing ring 93, and an annular protrusion 95 is circumferentially provided on one side of the small diameter section close to the large diameter section, the annular protrusion 95 forms the other side wall of the mounting groove 911, and the diameter of the annular protrusion 95 is smaller than that of the second sealing ring 93, and at the same time, an annular stopper 96 is radially outwardly provided on the outer wall of the large diameter section, and the spring 92 can be sleeved on the end of the large diameter section and abut against the annular stopper 96.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A valve device characterized by a housing chamber including a valve body (1), a stem assembly, a nipple nut (4) and a bonnet (8), the valve body (1) including a body portion (11) and an extension portion (12), the extension portion (12) projecting downward from the body portion (11), the nipple nut (4) being threadedly connected to a first portion (111) of the body portion (11), the bonnet (8) being threadedly engaged to a second portion (112) of the body portion (11), the stem assembly being located in the housing chamber;

the main body part (11) is provided with a first circulation channel (31), the extension part (12) is provided with a second circulation channel (32), the main body part (11) further comprises a valve port part (5), the valve rod assembly can approach or be far away from the valve port part (5) to block or communicate the first circulation channel (31) and the second circulation channel (32), and the central line of the valve rod assembly, the central line of the valve port part (5) and the central line of the adapter nut (4) are arranged approximately coaxially.

2. The valve device according to claim 1, characterized in that a mounting cavity (13) for mounting the valve rod assembly is arranged in the valve body (1), the valve rod assembly comprises a valve rod (2), the outer wall of the valve rod (2) is provided with an external thread section (22), and the external thread section (22) is in threaded fit with an internal thread section (14) arranged on the inner wall of the mounting cavity (13);

and a sealing part is also arranged between the valve rod (2) and the inner wall of the mounting cavity (13) along the circumferential direction.

3. A valve device according to claim 2, wherein the valve stem (2) comprises a sealing end (21) and a driving end (23), the sealing end (21) being provided with a sealing cone (211) for cooperation with the valve mouth (5), the sealing portion comprising a first sealing ring (6) arranged between an outer wall of the driving end (23) and an inner wall of the mounting cavity (13).

4. A valve device according to claim 3, characterized in that the end of the mounting chamber (13) is further provided with a collar (7), the sealing portion further comprising a counter sealing surface (25) provided at the drive end (23), the valve stem (2) being movable in its axial direction until the counter sealing surface (25) abuts the collar (7).

5. The valve device according to claim 3 or 4, characterized in that the driving end (23) is provided with a driving hole (231) and is used for driving the valve rod (2) to rotate, a mounting hole (24) axially communicated with the driving hole (231) is arranged in the sealing end (21), and the mounting hole (24) and the driving hole (231) form a third circulation channel for filling the first circulation channel (31) with refrigerant;

the valve stem assembly further comprises a valve device (9) arranged in the third flow channel.

6. The valve device according to claim 5, characterized in that the valve device (9) comprises a push rod (91), a spring (92) and a second sealing ring (93), the push rod (91) is arranged along the axial direction of the mounting hole (24) and can move along the axial direction of the mounting hole (24), and a flow gap is reserved between the outer wall of the push rod (91) and the inner wall of the mounting hole (24) along the axial direction;

the outer wall of the ejector rod (91) is provided with a mounting part, a second sealing ring (93) is further arranged on the mounting part along the circumferential direction, and a sealing part (26) is further arranged on the inner wall of the mounting hole (24) along the circumferential direction;

one end, far away from the driving hole (231), of the mounting hole (24) is circumferentially provided with a first limiting structure (27), the spring (92) is in a compressed state and is clamped between the first limiting structure (27) and the ejector rod (91), and the spring (92) can act on the ejector rod (91) to enable the second sealing ring (93) to be attached to the sealing portion (26).

7. The valve device according to claim 6, wherein the inner wall of the mounting hole (24) further comprises a tapered hole section having a larger inner diameter at a side facing the mounting hole (24) than at a side facing the driving hole (231), the inner wall of the tapered hole section forming the sealing portion (26);

the installation department is for following mounting groove (911) that ejector pin (91) outer wall circumference set up, mounting groove (911) orientation the lateral wall height of driving hole (231) one side is less than the thickness of second sealing washer (93).

8. A valve arrangement according to claim 6, characterised in that a washer (94) is also provided between the first stop formation (27) and the spring (92).

9. A valve device according to claim 6, wherein the end of the mounting hole (24) is riveted inwardly to form the first stop formation (27).

10. The valve device according to claim 6, characterized in that a guide section (912) is further arranged at one end of the ejector rod (91) facing the spring (92), and the spring (92) is sleeved outside the guide section (912).