Loose joint type quick connection pipe fitting

Abstract

The utility model provides a loose joint type quick connecting pipe fitting, and belongs to the technical field of pipeline connecting pieces. The quick connecting pipe fitting solves the problem that an existing quick connecting pipe fitting is poor in locking effect. The loose joint type quick connecting pipe fitting comprises a pipe body, a sleeve, a limiting ring, a pipe clamp, a sealing ring and a sealing ring are sequentially placed in an inner cavity of the pipe body from left to right, the surface of the limiting ring is sleeved with a clamping ring, a clamping groove matched with the clamping ring is formed in the inner wall of the pipe body, clamping teeth are arranged in the pipe clamp, and rectangular holes are formed in the two sides of the bottom of the pipe body. The inner wall of the rectangular hole is movably connected with a locking mechanism through a rotating shaft, the locking mechanism comprises a locking plate, and the bottoms of the two sides of the pipe body are connected with positioning bolts in a penetrating and threaded mode. According to the utility model, the connecting piece can be locked and limited, so that the connecting piece cannot loosen and fall off when being impacted by water pressure, the water pressure impact can be effectively borne, and the sealing effect is good.

Description

Technical Field

[0001] This utility model belongs to the technical field of pipe connection components, and specifically relates to a quick-connect fitting with a union-type connection. Background Technology

[0002] Quick-connect fittings have revolutionized traditional cumbersome connection methods such as adhesive bonding and heat fusion. No special tools or complicated preparations are required; pipe connections can be completed simply by inserting the fitting, greatly shortening installation time and improving construction efficiency.

[0003] For example, Chinese patent literature discloses a quick-connect fitting [202320303786.9; Authorization Announcement No.: CN219159761U], which includes a quick-connect fitting body and connecting sleeves. Connecting heads are fixedly connected to both the left and right sides of the quick-connect fitting body. Limiting protrusions are fixedly connected to both the left and right sides of the quick-connect fitting body. Each connecting sleeve has a connecting groove on its inner wall. Each connecting sleeve is threaded to the quick-connect fitting body through the connecting groove and quick-connect groove. Limiting grooves are opened on the opposite side of the two connecting sleeves. Quick-connect grooves are opened on the outer surface of each connecting head. A pressure relief valve is fixedly connected to the upper surface of the quick-connect fitting body. A sealing cap is threadedly connected to the output end of the pressure relief valve.

[0004] The aforementioned quick-connect fittings are easy to install and have good compatibility, but they lack a locking structure. Similarly, traditional quick-connect fittings cannot lock the pipe connectors during use. The connectors are usually connected to the inner wall of the pipe using a threaded connection. Due to the lack of a locking structure, the connectors are prone to loosening when subjected to pressure from the fluid inside the pipe, which can lead to liquid leakage and affect the sealing effect of the pipe fittings. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned problems in the prior art by providing a quick-connect fitting that can lock and limit the connection to prevent it from becoming loose.

[0006] The purpose of this utility model can be achieved through the following technical solution: A quick-connect fitting includes a tube body, in which a sleeve, a limiting ring, a tube clamp, a sealing ring and a sealing ring are placed sequentially from left to right in the inner cavity of the tube body. A retaining ring is fitted on the surface of the limiting ring. A retaining groove adapted to the retaining ring is opened on the inner wall of the tube body. A retaining tooth is provided inside the tube clamp. Rectangular holes are opened on both sides of the bottom of the tube body. A locking mechanism is movably connected to the inner wall of the rectangular hole through a rotating shaft. The locking mechanism includes a locking plate. Positioning bolts are threadedly connected to the bottom of both sides of the tube body.

[0007] This quick-connect fitting mainly features sleeves, limit rings, pipe clamps, sealing rings, retaining rings, retaining rings, retaining grooves, retaining teeth, rectangular holes, and locking mechanisms inside and on the surface of the fitting. These components, along with the locking mechanism, can secure the connection to the pipe, preventing loosening or detachment during use and increasing the stability of the fitting.

[0008] In the aforementioned quick-connect fitting, locking blocks are riveted to the bottom of opposite sides of the locking plates, and positioning grooves are formed on the opposite sides of the locking plates. The opposite ends of the positioning bolts extend into the inner cavity of the positioning grooves. In practical applications, by setting the locking blocks, the locking blocks clamp onto the surface of the external pipe, fixing the pipe body and the external pipe relatively and preventing the external pipe from loosening.

[0009] In the aforementioned quick-connect fitting, the pipe clamp is located between the sealing ring and the limiting ring, and the surface of the limiting ring is threaded to the inner wall of the pipe. In practical applications, by setting the pipe clamp, the pipe can be limited and fixed, preventing it from shifting inside the fitting.

[0010] In the aforementioned quick-connect fitting, the right end of the sleeve passes through a limiting ring, and the right side of the sealing ring contacts the sealing ring. In practical applications, the sealing ring further enhances the sealing effect inside the pipe body, preventing water leakage.

[0011] In the aforementioned quick-connect fitting, there are several locking teeth arranged in a circular pattern. In practical applications, these locking teeth allow for the secure clamping and fixing of the pipe.

[0012] Compared with the prior art, the advantages of this utility model are: it can lock and limit the connection, so that the connection will not loosen or fall off when subjected to water pressure impact, it can effectively withstand water pressure impact, and has a good sealing effect. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of the quick-connect fitting;

[0014] Figure 2 This is an exploded view of the structure of this quick-connect fitting;

[0015] Figure 3 This is a right view of the pipe clamp structure of this quick-connect fitting;

[0016] Figure 4 This is a sectional view of the locking mechanism of this quick-connect fitting.

[0017] In the diagram, 1. Pipe body; 2. Sleeve; 3. Limiting ring; 4. Pipe clamp; 5. Sealing ring; 6. Sealing ring; 7. Snap ring; 8. Snap groove; 9. Snap tooth; 10. Rectangular hole; 11. Locking mechanism; 12. Locking plate; 13. Positioning bolt; 14. Locking block; 15. Positioning groove. Detailed Implementation

[0018] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0019] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this quick-connect fitting includes a tube body 1. From left to right, the inner cavity of the tube body 1 contains a sleeve 2, a limiting ring 3, a tube clamp 4, a sealing ring 5, and a sealing ring 6. A retaining ring 7 is fitted on the surface of the limiting ring 3. A retaining groove 8 that matches the retaining ring 7 is opened on the inner wall of the tube body 1. A retaining tooth 9 is provided inside the tube clamp 4. Rectangular holes 10 are opened on both sides of the bottom of the tube body 1. A locking mechanism 11 is movably connected to the inner wall of the rectangular holes 10 through a rotating shaft. The locking mechanism 11 includes a locking plate 12. Positioning bolts 13 are threadedly connected to the bottom of both sides of the tube body 1.

[0020] To elaborate further, locking blocks 14 are riveted to the bottom of opposite sides of the locking plate 12, and positioning grooves 15 are opened on the opposite side of the locking plate 12. The opposite ends of the positioning bolts 13 extend into the inner cavity of the positioning grooves 15.

[0021] Pipe clamp 4 is located between sealing ring 5 and limiting ring 3, with the surface of limiting ring 3 threaded to the inner wall of pipe body 1. The right end of sleeve 2 passes through limiting ring 3, and the right side of sealing ring 5 contacts sealing ring 6. There are several locking teeth 9 arranged in a ring around each other.

[0022] In use, the bottom thread of the pipe body 1 is fitted onto the surface of the external connector, and then the positioning bolt 13 is tightened. The positioning bolt 13 pushes the locking plate 12 to move, and the locking plate 12 rotates around the pivot. Subsequently, the locking plate 12 drives the locking block 14 to move. The two locking blocks 14 cooperate to clamp the surface of the connector, thereby locking and limiting the pipe body 1 to prevent rotation between the pipe body 1 and the connector. Then, the external pipe is passed through the sleeve 2, the limiting ring 3, the pipe clamp 4, the sealing ring 5, and the sealing ring 6 in sequence. Then, the external pipe is moved to the right, and the external pipe enters the pipe body. Inside the pipe body 1, the sleeve 2, limiting ring 3, pipe clamp 4, sealing ring 5, and sealing ring 6 move along with the external pipe into the pipe body 1. Then, the limiting ring 3 is rotated, and the outer surface of the limiting ring 3 is threaded to the inner wall of the pipe body 1. The limiting ring 3 limits and fixes the position of the pipe clamp 4. Finally, the retaining ring 7 is snapped into the inside of the retaining groove 8 to complete the connection. Under the action of the retaining ring 7, the limiting ring 3 can be limited, so that the limiting ring 3 cannot move inside the pipe body 1, thereby preventing the limiting ring 3 from falling off and further increasing the stability of the connection between the pipe and the pipe body 1.

[0023] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. A quick-connect fitting with a union, comprising a pipe body (1), characterized in that, The inner cavity of the tube body (1) is provided with a sleeve (2), a limiting ring (3), a pipe clamp (4), a sealing ring (5), and a sealing ring (6) from left to right. The surface of the limiting ring (3) is fitted with a retaining ring (7). The inner wall of the tube body (1) is provided with a retaining groove (8) that matches the retaining ring (7). The inside of the pipe clamp (4) is provided with retaining teeth (9). The bottom of the tube body (1) is provided with rectangular holes (10) on both sides. The inner wall of the rectangular holes (10) is movably connected to a locking mechanism (11) through a rotating shaft. The locking mechanism (11) includes a locking plate (12). The bottom of both sides of the tube body (1) is threaded with positioning bolts (13).

2. The quick-connect fitting according to claim 1, characterized in that, Locking blocks (14) are riveted to the bottom of the opposite side of the locking plate (12), and positioning grooves (15) are opened on the opposite side of the locking plate (12). The opposite ends of the positioning bolts (13) extend into the inner cavity of the positioning grooves (15).

3. The quick-connect fitting according to claim 1, characterized in that, The pipe clamp (4) is located between the sealing ring (5) and the limiting ring (3), and the surface of the limiting ring (3) is threaded to the inner wall of the pipe body (1).

4. The quick-connect fitting according to claim 1, characterized in that, The right end of the sleeve (2) passes through the limiting ring (3), and the right side of the sealing ring (5) is in contact with the sealing ring (6).

5. A quick-connect fitting according to claim 1, characterized in that, The number of the locking teeth (9) is several, and the locking teeth (9) are arranged in a ring around each other.

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