Valve connecting structure

Abstract

The utility model belongs to the technical field of valve connection, and discloses a valve connection structure. The valve connecting structure comprises a female pipe joint and a male pipe joint partially inserted into the female pipe joint, a clamping groove is formed in the outer side wall of the male pipe joint in the circumferential direction of the male pipe joint, an inserting hole is formed in the position, corresponding to the clamping groove, of the female pipe joint, and the valve connecting structure further comprises a positioning pin which penetrates through the inserting hole and the clamping groove at the same time; a first lug is arranged on the portion, located outside the female pipe connector, of the male pipe connector, a second lug corresponding to the first lug in position is arranged on the outer side wall of the female pipe connector, the valve connecting structure further comprises a connecting piece, and the connecting piece is connected with the first lug and the second lug in a penetrating mode. According to the valve connecting structure provided by the embodiment, by additionally arranging the first convex lug, the second convex lug and the connecting piece, relative rotation of the male pipe connector and the female pipe connector can be limited, so that relative rotation of valves is prevented, the requirement for limiting rotation during installation of some valves can be met, and universality is high.

Description

Technical Field

[0001] The utility model relates to the technical field of valve connection, in particular to a valve connection structure. Background Art

[0002] In water systems such as urban water supply and drainage systems, domestic water systems, air conditioning, and heating systems, valves often require quick connections through connection structures. A valve quick connection typically consists of a female pipe connector and a male pipe connector that plugs into the female pipe connector. The male pipe connector has a slot circumferentially defined on its outer wall, and a socket corresponding to the slot is defined on the female pipe connector. A locating pin is inserted through both the socket and the slot to achieve the connection between the male and female pipe connectors.

[0003] A disadvantage of this arrangement is that the male and female pipe connectors cannot be locked together and can still rotate relative to each other, which fails to meet certain requirements for limiting valve rotation. Specifically, some valves (such as check valves) have directional requirements when installed on pipelines, for example, the valve must remain horizontal or vertical. Therefore, after assembly, the valve cannot rotate relative to the pipeline.

[0004] Therefore, there is an urgent need to provide a valve connection structure to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a valve connection structure, which can limit the relative rotation of the male pipe joint and the female pipe joint, thereby preventing the valves from rotating relative to each other.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] The valve connection structure includes a female pipe joint and a male pipe joint partially inserted into the female pipe joint, wherein the outer wall of the male pipe joint is provided with a slot along its circumference, and the female pipe joint is provided with a socket corresponding to the slot, and further includes a positioning pin, which penetrates both the socket and the slot;

[0008] A first lug is provided on the portion of the male pipe joint located outside the female pipe joint, and a second lug corresponding to the position of the first lug is provided on the outer wall of the female pipe joint. The valve connection structure also includes a connecting piece, which is arranged to connect the first lug and the second lug.

[0009] As an optional solution, the number of each of the first lug and the second lug is at least one and they correspond one to one.

[0010] As an optional solution, the jack is an elongated hole that passes through the female pipe joint.

[0011] As an optional solution, the second lug is provided at one axial end of the female pipe joint.

[0012] As an optional solution, the connecting member is a pin, and the pin passes through the first lug and the second lug.

[0013] As an optional solution, the connecting member includes a bolt and a nut, the bolt passes through the first lug and the second lug, and the nut is threadedly connected to the bolt.

[0014] As an optional solution, the connecting member is a rope or a metal wire.

[0015] As an optional solution, the female pipe joint is provided with countersunk holes at both ends of the socket, the countersunk holes are connected to the socket, a third sealing ring is embedded in the countersunk holes, and the third sealing ring is sleeved outside the positioning pin.

[0016] As an optional solution, the end of the female pipe joint facing away from the male pipe joint is defined as the first end, and a first sealing groove is provided on the outer side wall of the male pipe joint along its circumference. The first sealing groove is located on the side of the card slot close to the first end of the female pipe joint, and a first sealing ring is disposed in the first sealing groove. The outer ring of the first sealing ring is tightly pressed against the inner wall of the female pipe joint.

[0017] As an optional solution, a second sealing groove is further provided on the outer side wall of the male pipe joint, which is circumferentially surrounded by the male pipe joint. The second sealing groove is located on the side of the slot away from the first end of the female pipe joint. A second sealing ring is placed in the second sealing groove, and the outer ring of the second sealing ring abuts against the inner wall of the female pipe joint.

[0018] Beneficial effects of the utility model:

[0019] The utility model provides a valve connection structure. During installation, one end of the male pipe joint is first inserted into the female pipe joint, and then the positioning pin is inserted into the insertion hole and the card slot to achieve an axial fixed connection between the female pipe joint and the male pipe joint. Then, the male pipe joint and the female pipe joint are rotated to align the through holes on the first lug and the second lug. Finally, the connector is inserted to achieve a circumferential fixed connection between the female pipe joint and the male pipe joint. It can be seen that the valve connection structure provided by this embodiment, on the basis of the existing technology, increases the connection strength by adding the first lug, the second lug and the connector, can limit the relative rotation of the male pipe joint and the female pipe joint, thereby preventing the relative rotation of the valve and the valve, and can meet the requirements of limiting rotation when installing some valves, and has strong versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1This is a structural diagram of the connection of two valves provided by the utility model;

[0021] Figure 2 This is a structural diagram of a valve connection structure provided by an optional embodiment of the present utility model;

[0022] Figure 3 This is an exploded view of a valve connection structure provided by an optional embodiment of the present utility model;

[0023] Figure 4 This is a structural diagram of a valve connection structure provided by another optional embodiment of the present utility model;

[0024] Figure 5 It is a radial cross-sectional view of a valve connection structure provided by an optional embodiment of the present utility model.

[0025] In the picture:

[0026] 10. First valve; 20. Second valve;

[0027] 1. Male pipe connector; 11. Slot; 12. First lug; 13. First sealing groove; 14. Second sealing groove; 2. Female pipe connector; 21. Socket; 201. First end; 202. Second end; 211. Axis; 22. Second lug; 221. Axis of symmetry; 23. Countersunk hole; 3. Dowel pin; 4. Connector; 41. Pin; 42. Bolt; 43. Nut; 5. First sealing ring; 6. Second sealing ring; 7. Third sealing ring. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0029] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0030] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0031] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0032] This embodiment provides a valve connection structure, which is mainly used for quick connection between valves in water systems such as urban water supply and drainage systems, fire protection systems, water treatment systems, domestic water systems, air conditioning, and heating systems.

[0033] Specifically, if Figure 1 As shown, the valve connection structure includes a female pipe connector 2 and a male pipe connector 1. The male pipe connector 1 is part of a first valve 10, and the female pipe connector 2 is part of a second valve 20. The male pipe connector 1 and the female pipe connector 2 are plugged together to achieve a quick connection between the first valve 10 and the second valve 20. The first valve 10 and the second valve 20 can each be a valve structure such as a gate valve, a check valve, or a filter valve, and are not specifically limited here.

[0034] like Figure 2 and Figure 3 As shown, the male pipe connector 1 has a stepped shaft structure. The portion of the male pipe connector 1 with a smaller outer diameter is inserted into the female pipe connector 2, and the portion of the male pipe connector 1 with a larger outer diameter is located outside the female pipe connector 2 and docked with the female pipe connector 2. An annular groove 11 is provided on the outer wall of the male pipe connector 1 along its circumference, and a socket 21 is provided on the female pipe connector 2 at a position corresponding to the groove 11. The valve connection structure also includes a positioning pin 3, which penetrates both the socket 21 and the groove 11. Furthermore, a first lug 12 is provided on the portion of the male pipe connector 1 located outside the female pipe connector 2, and a second lug 22 is provided on the outer wall of the female pipe connector 2 corresponding to the position of the first lug 12. The valve connection structure also includes a connector 4, which penetrates and connects the first lug 12 and the second lug 22.

[0035] During installation, first insert one end of the male pipe connector 1 into the female pipe connector 2, then insert the locating pin 3 into the socket 21 and the slot 11 to achieve axial fixed connection between the female pipe connector 2 and the male pipe connector 1, then rotate the male pipe connector 1 and the female pipe connector 2 to align the through holes on the first lug 12 and the second lug 22, and finally insert the connecting piece 4 into the through holes of the first lug 12 and the second lug 22 to achieve circumferential fixed connection between the female pipe connector 2 and the male pipe connector 1.

[0036] It can be seen that the valve connection structure provided in this embodiment, on the basis of the existing technology, increases the connection strength by adding the first lug 12, the second lug 22 and the connecting piece 4, can limit the relative rotation of the male pipe joint 1 and the female pipe joint 2, thereby preventing the relative rotation of the valves, and thus can meet the requirements of limiting rotation during installation of some valves, and has strong versatility.

[0037] In an optional embodiment, if Figure 2 and Figure 3 As shown, the first lug 12 and the second lug 22 are respectively set to one. In another optional embodiment, the first lug 12 and the second lug 22 can also be respectively set to two, three or more, at least two first lugs 12 are evenly spaced along the circumference of the male pipe joint 1, and at least two second lugs 22 are evenly spaced along the circumference of the female pipe joint 2, and the first lug 12 and the second lug 22 are arranged in a one-to-one correspondence, and each group of the first lug 12 and the second lug 22 is penetrated and connected with a connector 4. According to actual needs, the connection strength between the male pipe joint 1 and the female pipe joint 2 can be improved by increasing the number of the first lug 12 and the second lug 22, which is not specifically limited here. This application is described by taking one first lug 12 and one second lug 22 as an example.

[0038] In an optional embodiment, if Figure 2 and Figure 3 As shown, the connector 4 is a latch 41, which penetrates the first lug 12 and the second lug 22. By using the latch 41, the valve maintenance and replacement becomes convenient, reducing time and labor costs. Only plugging and unplugging is required, which is easy to install and reduces installation difficulty and cost.

[0039] In another optional embodiment, as Figure 4 As shown, the connector 4 includes a bolt 42 and a nut 43. The bolt 42 passes through the first lug 12 and the second lug 22 in sequence. The nut 43 is threadedly connected to the bolt 42 and abuts against the second lug 22. By connecting the first lug 12 and the second lug 22 through the bolt 42 and the nut 43, the male pipe connector 1 and the female pipe connector 2 can be completely locked, further enhancing the connection strength between the male pipe connector 1 and the female pipe connector 2.

[0040] In another optional embodiment, the connecting member 4 can also be a rope or a metal wire, such as iron wire, steel wire, etc. The rope or metal wire is passed through the through holes of the first lug 12 and the second lug 22 and then tied tightly, which can also realize the rotation-restricted connection between the male pipe connector 1 and the female pipe connector 2.

[0041] In this embodiment, Figure 2 As shown, the second lug 22 is arranged at one axial end of the female pipe joint 2, specifically at the end of the female pipe joint 2 close to the male pipe joint 1, and the first lug 12 is arranged at the part of the male pipe joint 1 outside the female pipe joint 2 and close to one end of the female pipe joint 2. The first lug 12 and the second lug 22 are fitted and docked, which can shorten the length of the connecting piece 42 and reduce the space occupied in the axial direction.

[0042] In this embodiment, if Figure 5 As shown, the female pipe connector 2 is provided with a socket 21, which is an elongated, rectangular hole that extends through the female pipe connector 2. The axis 211 of the socket 21 is perpendicular to the axis 211 of the female pipe connector 2, making it easy to manufacture. A portion of the slot 11 is located along the extension of the socket 21, and the middle area of ​​the socket 21 overlaps and communicates with this portion of the slot 11. When the locating pin 3 is inserted into the socket 21, a portion of the locating pin 3 is simultaneously located within the slot 11, thereby achieving an axially fixed connection between the male pipe connector 1 and the female pipe connector 2, making installation easy.

[0043] In another optional embodiment, the female pipe joint 2 may also be provided with two symmetrical sockets 21, which are located on both sides of the portion of the male pipe joint 1 inserted into the female pipe joint 2 and are connected to the slot 11, and the corresponding positioning pins 3 are U-shaped. The two ends of the positioning pin 3 are respectively inserted into the corresponding sockets 21, and a portion of the positioning pin 3 is also located in the slot 11, which can also achieve an axial fixed connection between the male pipe joint 1 and the female pipe joint 2. Figure 5 As shown, the cross-section of the second lug 22 is a regular shape and has an axis of symmetry 221. The angle between the axis of symmetry 221 and the axis 211 of the socket 21 can be any angle. In other words, the socket 21 and the second lug 22 can be respectively arranged at any position in the circumferential direction of the female pipe connector 2, and both can achieve the above-mentioned function of restricting the rotation of the male pipe connector 1 and the female pipe connector 2. In this embodiment, the second lug 22 is semicircular. In other embodiments, the second lug 22 can also be circular, rectangular, trapezoidal, regular polygonal, or other regular shapes, as long as the first lug 12 and the second lug 22 have the same shape.

[0044] like Figure 3 and Figure 5As shown, the female pipe joint 2 has countersunk holes 23 at both ends of the insertion hole 21. The diameter of the countersunk holes 23 is larger than that of the insertion hole 21 and is coaxially connected to the insertion hole 21. The countersunk holes 23 are embedded with third sealing rings 7, which are sleeved on the outside of the positioning pin 3. The third sealing ring 7 mainly serves to seal and prevent dust.

[0045] In this embodiment, Figure 3 As shown, the end of the female pipe connector 2 facing away from the male pipe connector 1 is defined as the first end 201, and the second end 202 of the female pipe connector 2 is the end where the female pipe connector 2 and the male pipe connector 1 axially mate. The first end 201 is the water inlet end, and the medium enters through the first end 201 of the female pipe connector 2 and flows out of the male pipe connector 2. To this end, a first sealing groove 13 is formed on the outer wall of the male pipe connector 1 along its circumference. The first sealing groove 13 is located on the side of the retaining groove 11 near the first end 201 of the female pipe connector 2. A first sealing ring 5 is disposed in the first sealing groove 13, and the outer ring of the first sealing ring 5 is tightly pressed against the inner wall of the female pipe connector 2. The first sealing ring 5 has a relatively thick wire diameter and is mainly used to seal between the side walls of the male pipe connector 1 and the female pipe connector 2 to prevent liquid from leaking from the jack 21 and the gap between the male pipe connector 1 and the female pipe connector 2.

[0046] Furthermore, if Figure 3 As shown, the outer wall of the male pipe connector 1 is further provided with a circumferentially circumferential second sealing groove 14. This second sealing groove 14 is located on the side of the retaining groove 11 away from the first end 201 of the female pipe connector 2. A second sealing ring 6 is positioned within this second sealing groove 14, the outer ring of which abuts the inner wall of the female pipe connector 2. Compared to the first sealing ring 5, the second sealing ring 6 has a thinner wire diameter, providing a certain sealing effect, primarily for dust prevention.

[0047] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A valve connection structure, comprising a female pipe joint (2) and a male pipe joint (1) partially inserted into the female pipe joint (2), wherein a groove (11) is provided on the outer wall of the male pipe joint (1) along its circumference, and the female pipe joint (2) is provided with a socket (21) at a position corresponding to the groove (11), and further comprising a positioning pin (3), wherein the positioning pin (3) is simultaneously passed through the socket (21) and the groove (11), characterized in that: The male pipe joint (1) is provided with a first lug (12) on a portion located outside the female pipe joint (2), and a second lug (22) corresponding to the position of the first lug (12) is provided on an outer side wall of the female pipe joint (2). The valve connection structure further comprises a connecting member (4), and the connecting member (4) is provided to connect the first lug (12) and the second lug (22).

2. The valve connection structure according to claim 1, characterized in that: The number of each of the first lug (12) and the second lug (22) is at least one and they correspond one to one.

3. The valve connection structure according to claim 1, characterized in that: The insertion hole (21) is a long strip-shaped hole that passes through the female pipe joint (2).

4. The valve connection structure according to claim 1, characterized in that: The second lug (22) is provided at one axial end of the female pipe joint (2).

5. The valve connection structure according to claim 1, characterized in that: The connecting member (4) is a latch (41), and the latch (41) passes through the first lug (12) and the second lug (22).

6. The valve connection structure according to claim 1, characterized in that: The connecting member (4) comprises a bolt (42) and a nut (43), wherein the bolt (42) passes through the first lug (12) and the second lug (22), and the nut (43) is threadedly connected to the bolt (42).

7. The valve connection structure according to claim 1, characterized in that: The connecting piece (4) is a rope or a metal wire.

8. The valve connection structure according to claim 1, characterized in that: The female pipe joint (2) is provided with countersunk holes (23) at both ends of the insertion hole (21), the countersunk holes (23) are communicated with the insertion hole (21), a third sealing ring (7) is embedded in the countersunk holes (23), and the third sealing ring (7) is sleeved outside the positioning pin (3).

9. The valve connection structure according to claim 1, characterized in that: The end of the female pipe joint (2) facing away from the male pipe joint (1) is defined as a first end (201). A first sealing groove (13) surrounding the male pipe joint (1) is provided on the outer side wall thereof. The first sealing groove (13) is located on a side of the clamping groove (11) close to the first end (201) of the female pipe joint (2). A first sealing ring (5) is disposed in the first sealing groove (13). The outer ring of the first sealing ring (5) is tightly pressed against the inner wall of the female pipe joint (2).

10. The valve connection structure according to claim 9, characterized in that: A second sealing groove (14) is also provided on the outer side wall of the male pipe joint (1) and is circumferentially encircled. The second sealing groove (14) is located on a side of the clamping groove (11) away from the first end (201) of the female pipe joint (2). A second sealing ring (6) is accommodated in the second sealing groove (14), and the outer ring of the second sealing ring (6) abuts against the inner wall of the female pipe joint (2).

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