A conversion joint

Abstract

This utility model belongs to the technical field of water supply equipment, specifically referring to a conversion connector, including a connector for connecting water pipes. The connector includes a first connecting section and a second connecting section located above the first connecting section. The outer diameter of the first connecting section is larger than the outer diameter of the second connecting section. A hollow valve body is screwed onto the second connecting section. The valve body has a valve port. A bracket is provided inside the second connecting section. A water-stop plate for opening and closing the valve port is connected to the upper end of the bracket. An O-ring protruding from the outer wall of the second connecting section is fitted onto the lower end of the second connecting section. When the valve body abuts against the O-ring, the lower end face of the valve body does not contact the upper end face of the first connecting section. This utility model prevents the valve body from sticking to the connector, facilitating the upward rotation of the valve body in the opposite direction during subsequent uses.

Description

Technical fields:

[0001] This utility model belongs to the field of water supply equipment technology, and specifically refers to a conversion connector. Background technology:

[0002] The adapter is connected to the end of the high-pressure pump water pipe for fire sprinkler, irrigation, etc. It includes a connector connected to the end of the water pipe and a valve body screwed onto the connector. Rotating the valve body adjusts the water flow. The connector has a limiting boss that abuts against and limits the valve body. Because it is used for high-pressure pumps with high pressure, the valve body and connector are usually made of high-pressure-strength copper. When the user rotates the valve body excessively, the upper end face of the limiting boss on the lower end face of the valve body is prone to sticking, making it difficult to rotate the valve body upwards in the opposite direction next time. Utility Model Content:

[0003] The purpose of this invention is to provide a conversion connector whose valve body will not stick to the connector, making it easier to rotate and move the valve body upwards in the opposite direction next time.

[0004] This utility model is implemented as follows:

[0005] A conversion connector includes a connector for connecting a water pipe. The connector includes a first connecting section and a second connecting section located above the first connecting section. The outer diameter of the first connecting section is larger than the outer diameter of the second connecting section. A hollow valve body is screwed onto the second connecting section. The valve body has a valve port. A bracket is provided inside the second connecting section. A water-stop plate for opening and closing the valve port is connected to the upper end of the bracket. An O-ring protrudes from the outer wall of the second connecting section and is fitted onto the lower end of the second connecting section. When the valve body abuts against the O-ring, the lower end face of the valve body does not contact the upper end face of the first connecting section.

[0006] In the aforementioned adapter, the lower outer wall of the second connecting section is recessed to form an annular groove, the lower end face of the annular groove is the upper end face of the first connecting section, and the O-ring is axially limited within the annular groove.

[0007] In one of the aforementioned conversion joints, the waterstop plate is T-shaped, comprising a rod-shaped portion and a plate located above the rod-shaped portion. The lower end of the rod-shaped portion is connected to the bracket, and a sealing gasket located below the plate is fitted over the rod-shaped portion. The plate opens and closes the valve port through the sealing gasket.

[0008] In one of the above-mentioned conversion connectors, the valve port includes a large circular hole, a frustum-shaped hole, and a small circular hole arranged sequentially from top to bottom. The valve port is closed when the lower end of the sealing gasket abuts against the wall of the frustum-shaped hole.

[0009] In one of the aforementioned conversion connectors, the valve body is provided with a guide hole located above the valve port. The guide hole includes a frustum-shaped hole and a cylindrical hole located above the frustum-shaped hole. The diameter of the frustum-shaped hole gradually decreases from top to bottom. The diameter of the cylindrical hole is equal to the maximum diameter of the frustum-shaped hole. The minimum diameter of the frustum-shaped hole is greater than the diameter of the large circular hole. Multiple guide teeth are evenly distributed around the inner circumference of the guide hole. The two sides of the guide teeth are vertically oriented planes. The inner wall of the guide teeth includes an inclined surface and a vertical surface located above the inclined surface. The inclined surface gradually slopes outward from bottom to top.

[0010] In one of the above-mentioned conversion joints, the outer wall of the upper end of the rod-shaped part is recessed to form an annular groove II, the sealing gasket is axially limited within the annular groove II, the upper end face of the annular groove II is the lower end face of the flat plate, the outer wall of the upper end of the rod-shaped part protrudes outward to form an annular protrusion, and the lower end face of the annular groove II is the upper end face of the annular protrusion.

[0011] In one of the above-mentioned conversion joints, the lower end of the rod-shaped part is screwed to the bracket, and the upper middle part of the waterstop plate is provided with an internal hexagonal hole.

[0012] In one of the above-mentioned conversion joints, the bracket includes a support column located in the middle, and multiple support plates are evenly distributed around the outer circumference of the support column. A water outlet gap is formed between two adjacent support plates. The inner end of the support plate is connected to the support column, and a gap is left between the outer end and the inner wall surface of the valve body. The upper end of the second connecting section is provided with a limiting boss that abuts against and limits the support plate. The upper end of the support column is provided with an external thread that is screwed to the water stop plate.

[0013] In one of the aforementioned conversion connectors, an elastic shaped ring is fitted onto the valve body, and the elastic shaped ring is located at the upper end of the valve body.

[0014] In one of the aforementioned conversion joints, the support column and the support plate are an integral structure, and the rod-shaped part and the flat plate are an integral structure.

[0015] In one of the aforementioned adapters, the connector and valve body are made of brass.

[0016] In one of the aforementioned adapters, the connecting head and valve body can also be made of stainless steel.

[0017] The outstanding advantages of this utility model compared to the prior art are:

[0018] 1. In this utility model, an O-ring protrudes from the outer side wall of the second connecting section and is fitted at the lower end of the second connecting section. When the valve body moves down to abut against the O-ring, the O-ring generates a certain resistance to prevent the valve body from moving down, so that the user can feel that the valve body has reached the bottom. As a result, the user will not continue to rotate the valve body. At this time, the lower end face of the valve body does not contact the upper end face of the first connecting section, and the valve body will not stick to the first connecting section. That is, the valve body will not stick to the connector, and the O-ring will not stick to the copper valve body, which makes it easier to rotate the valve body upward in the opposite direction next time.

[0019] 2. The rod-shaped part of this utility model is fitted with a sealing gasket located below the plate. The plate opens and closes the valve port through the sealing gasket, which has a good sealing effect, low operating torque, and low machining accuracy requirements for the plate and the valve port.

[0020] 3. The lower end of the rod-shaped part of this utility model is screwed to the bracket, and the upper end of the waterstop plate is provided with an internal hexagonal hole for easy disassembly and assembly of the waterstop plate. Attached image description:

[0021] Figure 1 This is a perspective view of the present invention;

[0022] Figure 2 This is a cross-sectional view of the present invention;

[0023] Figure 3 This is an exploded view of this utility model.

[0024] Reference numerals: 1. Connector; 1a. Connecting section one; 1b. Connecting section two; 2. Valve body; 3. Valve port; 3a. Large round hole; 3b. Frustum hole one; 3c. Small round hole; 4. Bracket; 4a. Support column; 4b. Support plate; 5. Waterstop plate; 5a. Rod-shaped part; 5b. Flat plate; 6. O-ring; 7. Annular groove one; 8. Sealing gasket; 9. Guide hole; 9a. Frustum hole two; 9b. Cylindrical hole; 10. Guide tooth; 11. Side; 12. Inclined surface; 13. Vertical surface; 14. Annular groove two; 15. Annular protrusion; 16. Internal hexagonal hole; 17. Limiting boss; 18. Elastic irregular ring. Detailed implementation method:

[0025] The present invention will be further described below with reference to specific embodiments. See also: Figure 1 —3:

[0026] A conversion connector includes a connector 1 for connecting to a water pipe. The connector 1 includes a first connecting section 1a and a second connecting section 1b located above the first connecting section 1a. The outer diameter of the first connecting section 1a is larger than the outer diameter of the second connecting section 1b. A hollow valve body 2 is screwed onto the second connecting section 1b. A valve port 3 is provided inside the valve body 2. A bracket 4 is provided inside the second connecting section 1b. A water-stop plate 5 for opening and closing the valve port 3 is connected to the upper end of the bracket 4. An O-ring 6 protruding from the outer wall of the second connecting section 1b is fitted onto the lower end of the second connecting section 1b. When the valve body 2 abuts against the O-ring 6, the lower end face of the valve body 2 does not contact the upper end face of the first connecting section 1a.

[0027] The working principle of this utility model is as follows: Figure 1-3 As shown, connect the lower end of connecting section 1a to the water pipe, hold the connector 1, rotate the valve body 2. When the valve body 2 moves downward relative to the connector 1, the water stop plate 5 opens the valve port 3. When the valve body 2 moves upward relative to the connector 1, the water stop plate 5 narrows the valve port 3 until the valve port 3 is closed.

[0028] In this invention, an O-ring 6 protruding from the outer wall of the connecting section 1b is fitted at the lower end of the connecting section 2. When the valve body 2 moves down to abut against the O-ring 6, the O-ring 6 generates a certain resistance to prevent the valve body 2 from moving down, so that the user can perceive that the valve body 2 has reached the bottom. As a result, the user will not continue to rotate the valve body 2. At this time, the lower end face of the valve body 2 does not contact the upper end face of the connecting section 1a, and the valve body 2 will not stick to the connecting section 1a. That is, the valve body 2 will not stick to the connector 1, and the O-ring 6 will not stick to the copper valve body 2, which facilitates the next upward rotation of the valve body 2 in the opposite direction.

[0029] The O-ring 6 of this utility model provides resistance to the downward movement of the valve body 2, making it difficult for the valve body 2 to move downward and fully contact the connecting section 1a.

[0030] In order to limit the axial position of O-ring 6, such as Figure 1 , 2 As shown, the lower outer wall of the connecting segment 1b is recessed to form an annular groove 7, the lower end surface of the annular groove 7 is the upper end surface of the connecting segment 1a, and the O-ring 6 is axially limited within the annular groove 7.

[0031] The structure of waterstop 5: as follows Figure 2 , 3 As shown, the waterstop plate 5 is T-shaped, including a rod-shaped part 5a and a plate 5b located above the rod-shaped part 5a. The lower end of the rod-shaped part 5a is connected to the bracket 4. A sealing gasket 8 located below the plate 5b is fitted on the outside of the rod-shaped part 5a. The plate 5b opens and closes the valve port 3 through the sealing gasket 8, resulting in good sealing effect, low operating torque, and low machining accuracy requirements for the plate 5b and the valve port 3.

[0032] The specific structure of valve port 3 is as follows: Figure 1 , 2 As shown, the valve port 3 includes a large circular hole 3a, a frustum hole 3b and a small circular hole 3c arranged sequentially from top to bottom. The valve port 3 is closed when the lower end of the sealing gasket 8 abuts against the wall of the frustum hole 3b.

[0033] To disperse the sprayed water flow, the valve body 2 is provided with a guide hole 9 located above the valve port 3. The guide hole 9 includes a frustum hole 9a and a cylindrical hole 9b located above the frustum hole 9a. The diameter of the frustum hole 9a gradually decreases from top to bottom. The diameter of the cylindrical hole 9b is equal to the maximum diameter of the frustum hole 9a. The minimum diameter of the frustum hole 9a is greater than the diameter of the large circular hole 3a. Multiple guide teeth 10 are evenly distributed around the inner circumference of the guide hole 9. The two sides 11 of the guide teeth 10 are vertically oriented planes. The inner wall of the guide teeth 10 includes an inclined surface 12 and a vertical surface 13 located above the inclined surface 12. The inclined surface 12 gradually slopes outward from bottom to top.

[0034] In order to axially limit the sealing gasket 8, such as Figure 2 , 3 As shown, the outer wall of the upper end of the rod-shaped portion 5a is recessed to form an annular groove 14. The sealing gasket 8 is axially limited within the annular groove 14. The upper end face of the annular groove 14 is the lower end face of the flat plate 5b. The outer wall of the upper end of the rod-shaped portion 5a protrudes outward to form an annular protrusion 15. The lower end face of the annular groove 14 is the upper end face of the annular protrusion 15. The sealing gasket 8 is not easily moved up and down, resulting in less wear and a longer service life. The annular protrusion 15 allows the depth of the annular groove 14 to be designed to be shallower, thus providing strength to the waterstop plate 5.

[0035] The connection structure between the waterstop plate 5 and the bracket 4 is as follows: Figure 2 , 3 As shown, the lower end of the rod-shaped part 5a is screwed to the bracket 4, and the upper middle part of the waterstop plate 5 is provided with an internal hexagonal hole 16, which facilitates the disassembly and assembly of the waterstop plate 5 without affecting the waterstop function of the waterstop plate 5.

[0036] Structure of support 4: as follows Figure 2 , 3 As shown, the bracket 4 includes a central support column 4a. Multiple support plates 4b are evenly distributed around the outer circumference of the support column 4a, forming a water outlet gap between adjacent support plates 4b. The inner end of each support plate 4b is connected to the support column 4a, and a gap is left between its outer end and the inner wall of the valve body 2. The upper end of the connecting section 1b is provided with a limiting boss 17 that abuts against and limits the support plates 4b. The upper end of the support column 4a is provided with an external thread that screws onto the water-stop plate 5. The bracket 4 slides within the connecting section 1b. During water spraying, the water pressure pushes the bracket 4 upwards until it abuts against the limiting boss 17. The bracket 4 is not fixedly connected to the connecting section 1b, facilitating the processing of the bracket 4 and the connector 1.

[0037] To prevent the valve body 2 from being damaged when the present invention is dropped, an elastic shaped ring 18 is fitted on the outside of the valve body 2, and the elastic shaped ring 18 is located at the upper end of the valve body 2 to facilitate the rotation of the valve body 2.

[0038] Preferably, the material of the elastic profiled ring 18 is rubber. In this embodiment, the material of the elastic profiled ring 18 is EPDM (ethylene propylene diene monomer rubber).

[0039] To reduce assembly steps and ensure a secure connection, the support column 4a and the support plate 4 are integral structures, and the rod-shaped part 5a and the flat plate 5b are integral structures.

[0040] Preferably, the connector 1 and valve body 2 are made of brass, which is corrosion resistant and effectively prevents the water pressure and fire extinguishing effect of the fire protection system from being affected by loose or leaking interfaces.

[0041] The above embodiments are only one of the preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes made in accordance with the shape, structure and principle of this utility model should be covered within the protection scope of this utility model.

Claims

1. A swivel joint characterized by: The device includes a connector (1) for connecting water pipes. The connector (1) includes a first connecting section (1a) and a second connecting section (1b) located above the first connecting section (1a). The outer diameter of the first connecting section (1a) is larger than the outer diameter of the second connecting section (1b). A hollow valve body (2) is screwed onto the second connecting section (1b). A valve port (3) is provided inside the valve body (2). A bracket (4) is provided inside the second connecting section (1b). A water-stop plate (5) for opening and closing the valve port (3) is connected to the upper end of the bracket (4). An O-ring (6) protruding from the outer wall of the second connecting section (1b) is fitted onto the lower end of the second connecting section (1b). When the valve body (2) abuts against the O-ring (6), the lower end face of the valve body (2) does not contact the upper end face of the first connecting section (1a).

2. A swage coupling according to claim 1, characterised in that: The lower outer wall of the connecting segment 2 (1b) is recessed to form an annular groove 1 (7), the lower end face of the annular groove 1 (7) is the upper end face of the connecting segment 1 (1a), and the O-ring (6) is axially limited in the annular groove 1 (7).

3. A swage coupling according to claim 1, wherein: The waterstop plate (5) is T-shaped and includes a rod-shaped part (5a) and a plate (5b) located above the rod-shaped part (5a). The lower end of the rod-shaped part (5a) is connected to the bracket (4). The rod-shaped part (5a) is fitted with a sealing gasket (8) located below the plate (5b). The plate (5b) opens and closes the valve port (3) through the sealing gasket (8).

4. A swage coupling according to claim 3, wherein: The valve port (3) includes a large round hole (3a), a frustum hole (3b) and a small round hole (3c) arranged sequentially from top to bottom. The valve port (3) is closed when the lower end of the sealing gasket (8) abuts against the wall of the frustum hole (3b).

5. A swage coupling according to claim 4, wherein: The valve body (2) is provided with a guide hole (9) located above the valve port (3). The guide hole (9) includes a frustum hole (9a) and a cylindrical hole (9b) located above the frustum hole (9a). The diameter of the frustum hole (9a) gradually decreases from top to bottom. The diameter of the cylindrical hole (9b) is equal to the maximum diameter of the frustum hole (9a). The minimum diameter of the frustum hole (9a) is greater than the diameter of the large circular hole (3a). Multiple guide teeth (10) are evenly distributed around the inner circumference of the guide hole (9). The two sides (11) of the guide teeth (10) are planes arranged vertically. The inner wall of the guide teeth (10) includes an inclined surface (12) and a vertical surface (13) arranged above the inclined surface (12). The inclined surface (12) gradually slopes outward from bottom to top.

6. A swage coupling according to claim 3, wherein: The upper outer wall of the rod-shaped part (5a) is recessed to form an annular groove two (14), and the sealing gasket (8) is axially limited in the annular groove two (14). The upper end surface of the annular groove two (14) is the lower end surface of the flat plate (5b). The upper outer wall of the rod-shaped part (5a) protrudes outward to form an annular protrusion (15), and the lower end surface of the annular groove two (14) is the upper end surface of the annular protrusion (15).

7. A swage coupling according to claim 3, wherein: The lower end of the rod-shaped part (5a) is screwed to the bracket (4), and the upper middle part of the waterstop plate (5) is provided with an internal hexagonal hole (16).

8. The swage coupling of claim 1, wherein: The bracket (4) includes a support column (4a) located in the middle. Multiple support plates (4b) are evenly distributed around the outer circumference of the support column (4a). A water outlet gap is formed between two adjacent support plates (4b). The inner end of the support plate (4b) is connected to the support column (4a), and a gap is left between the outer end and the inner wall of the valve body (2). The upper end of the connecting section 2 (1b) is provided with a limiting boss (17) that abuts against and limits the support plate (4b). The upper end of the support column (4a) is provided with an external thread that is screwed to the water stop plate (5).

9. A conversion connector according to claim 1, characterized in that: The valve body (2) is fitted with an elastic shaped ring (18), and the elastic shaped ring (18) is located at the upper end of the valve body (2).

Images