Quick-connect water hose

Abstract

The present invention discloses a device for quickly connecting water pipes, wherein an externally threaded tapered tube is welded to the pipe mouth of a ball valve, a tapered external thread is arranged on the outside of the externally threaded tapered tube, a tapered internal thread is arranged on the inner side wall of an internally threaded tapered nut, the internally threaded tapered nut and the externally threaded tapered tube are connected together by threads, the inner side wall of the externally threaded tapered tube is provided with a tapered opening which is thick outside and thin inside, and a connecting pipe is sleeved inside the tapered opening. The invention is a straight-through connection device, and when in use, the water pipes are respectively inserted into the left and right ends of the device, and the installation and connection speed is very fast, the connection is not easy to fall off, and the sealing effect is good. The inner diameter size of the two ends can be changed by rotating the locking nut, and can be closed during the locking process of the locking nut, so that the caliber size is changed, making the water pipe more secure. The opening of the manual ball valve can be manually controlled.

Description

Technical Field

[0001] The invention belongs to the technical field of temperature and humidity on-site care of concrete structures, and in particular relates to a device for quickly connecting water pipes. Background Art

[0002] At present, the common pipe joints produced by the existing technology use the horizontal straight insertion method to connect the two ends of the joints with the ends of the pipe body. The outer diameter of the end of the pipe joint is consistent with the inner diameter of the pipe body, and the inner diameter of the pipe joint is generally 3 to 6 mm smaller than the inner diameter of the pipe due to material strength and other reasons. Through calculation, it is known that when a cross-linked polyethylene pipe with an inner diameter of 16 mm is used, the inner diameter of the common pipe joint is 12 mm, and the corresponding inner cross-sectional area of ​​the pipe joint is only 56.25% of the cross-sectional area of ​​the pipe itself; when a cross-linked polyethylene pipe with an inner diameter of 50 mm is used, the inner diameter of the common pipe joint is 44 mm, and the corresponding inner cross-sectional area of ​​the pipe joint is 77.44% of the inner cross-sectional area of ​​the pipe itself. The design did not consider the influence of the resistance of the common pipe joint, resulting in small water flow in the circulation system, poor connectivity, poor sealing, and low operating efficiency. Summary of the invention

[0003] The invention aims to solve the problem that common pipe joints have low operating efficiency due to small water flow in the circulation system, poor connectivity and poor sealing, and provides a device for quickly connecting water pipes.

[0004] In order to achieve the above-mentioned purpose, the following technical scheme is adopted: a device for quickly connecting water pipes, an externally threaded tapered tube is welded to the pipe mouth of a ball valve, a tapered external thread is arranged on the outer side of the externally threaded tapered tube, a plurality of tapered matching grooves are evenly distributed on the circumferential surface of the externally threaded tapered tube, the outer end width of the tapered matching groove is greater than the inner end width, an inner lining rubber layer is sleeved on the inner wall of the externally threaded tapered tube, a plurality of tapered ridges are evenly distributed on the outer surface of the inner lining rubber layer, and each tapered ridge is matched and installed with the corresponding tapered matching groove; it also includes an internally threaded tapered nut, a tapered internal thread is arranged on the inner side wall of the internally threaded tapered nut, and the internally threaded tapered nut and the externally threaded tapered tube are connected together by threads; the inner side wall of the externally threaded tapered tube at the pipe mouth position converges from the inside to the outside to form a tapered convergent opening, and a connecting pipe is sleeved in the tapered convergent opening.

[0005] A spring piece is fixed on the outside of the internal thread cone nut. The spring piece is an arched spring piece protruding outward. In a natural state, the end of the spring piece is fixed in a conical matching groove evenly distributed on the circumferential surface of the external thread cone tube.

[0006] A bushing is sleeved on the inner side of the external threaded tapered tube or the inner lining rubber layer.

[0007] Beneficial effects: The invention is a straight-through connection device. When in use, the water pipe is inserted into the left and right ends of the device respectively. The installation and connection speed is very fast, the connection is not easy to fall off and the sealing effect is good. The inner diameter of the two ends can be changed by rotating the locking nut, and it can be closed during the locking process of the locking nut, so that the diameter size changes, making the water pipe more secure. The manual ball valve can manually control the opening.

[0008] The spring sheet can be used to prevent the internal thread cone nut from sliding back in a natural state. However, when the spring sheet is pressed, the arched spring sheet moves downward, driving the chuck to bounce up, so that the chuck is separated from the conical matching groove. The operation is simple and convenient, and the practicability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the cross-sectional structure of the ball valve in the present invention.

[0010] Figure 2 yes Figure 1 A schematic diagram of the appearance structure of a tapered tube with internal and external threads.

[0011] Figure 3 yes Figure 2 Schematic diagram of the local cross-sectional structure.

[0012] Figure 4 It is a schematic diagram of the structure of installing the anti-slip spring piece with an internal threaded cone nut.

[0013] Numbers in the figure: 1 is a ball valve, 2 is an externally threaded tapered pipe, 3 is an internally threaded tapered nut, 4 is a bushing, 5 is a connecting pipe, 6 is a ball valve pipe mouth, 7 is a ball valve handle, 8 is a tapered matching groove, 9 is an inner lining rubber layer, 10 is a tapered convex ridge of the inner lining rubber layer, 11 is a tapered thread, 12 is a tapered convergent mouth, 13 is a spring piece, 14 is a clamp, and 15 is a blind pin. DETAILED DESCRIPTION

[0014] Example 1: See Figure 1 The device for quickly connecting a water pipe shown in the figure adopts a combined structure of an external threaded cone tube and an internal threaded cone nut on the basis of an existing ball valve 1. Specifically, an external threaded cone tube 2 is welded at the two ports of the ball valve 1. The outer side of each external threaded cone tube 2 is threadedly connected with an internal threaded cone nut 3.

[0015] Figure 1 As can be seen in the figure, a tapered external thread is arranged on the outer side of the external thread cone tube 2, and a tapered internal thread is arranged on the inner side wall of the internal thread cone nut 3, and the internal thread cone nut 3 and the external thread cone tube 2 are connected together by threads. The manual ball valve 1 can manually control the opening.

[0016] At the same time, the inner wall of the external threaded tapered tube 2 at the tube opening converges from the inside to the outside to form a tapered convergent opening 12 , and a connecting tube 5 is sleeved in the tapered convergent opening 12 .

[0017] In order to realize the contraction function of the external threaded tapered tube 2, Figure 2 and Figure 3 As shown, the circumferential surface of the external threaded cone tube 2 is evenly distributed with a plurality of conical matching grooves 8, the outer end width of the conical matching grooves 8 is greater than the inner end width, and an inner lining rubber layer 9 is sleeved on the inner wall of the external threaded cone tube 2, and the outer surface of the inner lining rubber layer 9 is evenly distributed with a plurality of conical ridges, and each conical ridge is matched and installed with the corresponding conical matching groove 8. Thus, the characteristics of very fast installation and connection speed are achieved, the connection is not easy to fall off and the sealing effect is good. When the internal threaded cone nuts 3 on both sides are rotated, the external threaded cone tube 2 can be compressed inward, thereby pressing the connecting tube 5, and it also has a sealing effect while compressing.

[0018] Example 2: Based on Example 1, see Figure 4 As shown, a spring piece 13 is fixed on the outside of the internal thread cone nut 3. The spring piece 13 is an arched spring piece protruding outward. In the natural state, the clamp head 14 at the end of the spring piece is clamped in the tapered matching groove 8 uniformly distributed on the circumference of the external thread cone tube 2. The spring piece can be used to prevent the internal thread cone nut from sliding back in the natural state. However, when the spring piece is pressed, the arched spring piece moves downward, driving the clamp head 14 to bounce up, so that the clamp head 14 is separated from the tapered matching groove 8.

[0019] Embodiment 3: Based on Embodiment 1, a bushing 4 is provided inside the external threaded tapered tube 2 or the inner lining rubber layer 9. When in use, the water pipe is inserted into the left and right ends of the device to achieve a straight connection. The locking nut is a tapered internal thread. Rotating the locking nut can change the inner diameter of the two ends. The tapered external thread is a multi-petal structure, which can be closed during the locking process of the locking nut, thereby changing the diameter and making the water pipe more secure.

Claims

1. A device for quickly connecting a water pipe, characterized by: An external threaded tapered tube is welded to the pipe mouth of the ball valve, and a tapered external thread is arranged on the outer side of the external threaded tapered tube. A plurality of tapered matching grooves are evenly distributed on the circumferential surface of the external threaded tapered tube, and the outer end width of the tapered matching groove is greater than the inner end width. An inner lining rubber layer is sleeved on the inner wall of the external threaded tapered tube, and a plurality of tapered convex ridges are evenly distributed on the outer surface of the inner lining rubber layer, and each tapered convex ridge is matched and installed with the corresponding tapered matching groove; it also includes an internal threaded tapered nut, and a tapered internal thread is arranged on the inner side wall of the internal threaded tapered nut, and the internal threaded tapered nut is connected to the external thread. The tapered tubes are connected together by threads; the inner side wall of the externally threaded tapered tube at the tube mouth converges from the inside to the outside to form a tapered convergent opening, and a connecting tube is sleeved in the tapered convergent opening; a spring sheet is fixed on the outside of the internally threaded tapered nut, and the spring sheet is an arched spring sheet protruding outward, and the end of the spring sheet is naturally fixed in a tapered matching groove uniformly distributed on the circumferential surface of the externally threaded tapered tube; the spring sheet prevents the internally threaded tapered nut from sliding backward, but when the spring sheet is pressed, the arched spring sheet can move downward, driving the clamping head to pop up, so that the clamping head is separated from the tapered matching groove.

2. The device for quickly connecting a water pipe according to claim 1, characterized in that: A bushing is sleeved on the inner side of the external threaded tapered tube or the inner lining rubber layer.

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