Anti-backflow valve connecting pipe

Abstract

The utility model provides an anti-backflow valve connecting pipe, and belongs to the technical field of valves. An anti-backflow valve connecting pipe comprises a main connecting pipe head, the main connecting pipe head is sleeved with a telescopic ring, an auxiliary connecting pipe head is fixed to the side, away from the main connecting pipe head, of the telescopic ring, and flow blocking assemblies are installed on the auxiliary connecting pipe head and the main connecting pipe head; the flow blocking assembly comprises a baffle rotating in the main pipe connecting head and two symmetrical sliding rods fixed to the auxiliary pipe connecting head, the sliding rods slide in the main pipe connecting head, an abutting shaft is fixed to the diameter of the tail end of each sliding rod, and the abutting shafts abut against the baffle. When water flows back, the baffle can be impacted to cover the square groove again, the situation that the water flows back to impact the valve is avoided, and therefore the valve can be protected against damage.

Description

Technical Field

[0001] The utility model belongs to the field of valves, and in particular relates to a backflow prevention valve connecting pipe. Background Art

[0002] Valve take-over is an important component of the pipeline system. Its main function is to connect pipelines, connect different pipeline components, and connect parts between pipelines and equipment. However, nowadays valve take-over has only such a single function. When water backflow occurs, it will impact the valve, which may damage the valve. Utility Model Content

[0003] The utility model aims at the deficiencies of the prior art and provides a backflow prevention valve pipe.

[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a backflow prevention valve pipe, comprising a main pipe head, characterized in that: a telescopic ring is sleeved on the main pipe head, a secondary pipe head is fixed on the side of the telescopic ring away from the main pipe head, and a flow blocking component is installed on the secondary pipe head and the main pipe head;

[0005] The flow-blocking assembly includes a baffle rotating in the main pipe head and two symmetrical sliding rods fixed on the auxiliary pipe head. The sliding rods slide in the main pipe head. An abutment shaft is vertically fixed to the end of the sliding rod, and the abutment shaft abuts on the baffle.

[0006] Optionally, a collar is rotatably connected to the outer peripheral side of the main pipe head, and the collar is threadedly connected to the telescopic ring.

[0007] Optionally, a square groove is provided on a side of the main connecting head close to the auxiliary connecting head, and the baffle is located in the square groove, and the baffle is also square in shape.

[0008] Optionally, two sides of the square groove are provided with slide grooves, and the slide rod is installed in the slide grooves. Optionally, the abutment shaft is located on a side of the baffle away from the auxiliary pipe head, and the abutment shaft is located at a position slightly above the center of the baffle.

[0009] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0010] 1. Due to the setting of the flow-blocking component, when the water flows back, it will impact the baffle to cover the square groove again, so as to prevent the water from flowing back and impacting the valve, thereby protecting the valve from damage.

[0011] 2. The abutment shaft can also be used to abut the baffle to adjust whether the anti-backflow function is needed according to the use environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional diagram of the utility model.

[0013] Figure 2 It is a cross-sectional view of the utility model.

[0014] 10. Main pipe joint; 11. Auxiliary pipe joint; 12. Ring; 13. Telescopic ring; 14. Sliding rod; 15. Baffle; 16. Abutment shaft. DETAILED DESCRIPTION

[0015] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the present invention.

[0016] As shown in Figure 1-2, a backflow prevention valve connecting pipe includes a main connecting pipe head 10, which is characterized in that: a telescopic ring 13 is mounted on the main connecting pipe head 10, and a sleeve ring 12 is rotatably connected to the outer peripheral side of the main connecting pipe head 10, and the sleeve ring 12 is threadedly connected to the telescopic ring 13. A sub-connecting pipe head 11 is fixed to the side of the telescopic ring 13 away from the main connecting pipe head 10, and a blocking component is installed on the sub-connecting pipe head 11 and the main connecting pipe head 10. The blocking component includes a baffle 15 rotating in the main connecting pipe head 10, and two symmetrical sliding rods 14 fixed on the sub-connecting pipe head 11, the sliding rod 14 slides in the main connecting pipe head 10, and an abutment shaft 16 is vertically fixed to the end of the sliding rod 14, and the abutment shaft 16 abuts on the baffle 15, and the abutment shaft 16 is located on the side of the baffle 15 away from the sub-connecting pipe head 11, and the abutment shaft 16 is located at a position slightly above the center of the baffle 15.

[0017] A square groove is provided on one side of the main pipe head 10 close to the auxiliary pipe head 11, and a baffle 15 is located in the square groove. The baffle 15 is also square in shape, and slide grooves are provided on both sides of the square groove, and a slide rod 14 is installed in the slide grooves.

[0018] When in use, one side of the main pipe head 10 needs to be threadedly connected to the valve, and the auxiliary pipe head 11 is connected to the pipeline. When backflow prevention is needed, the auxiliary pipe head 11 is pushed to make the telescopic ring 13 slide to the ring 12, and then the ring 12 is rotated to fix the telescopic ring 13, and then the abutment shaft 16 will not abut on the baffle 15. When water flows from the main pipe head 10 to the main pipe head 10, the baffle 15 opens normally under the impact of the water flow. When the water flow refluxes, it will impact the baffle 15 to cover the square groove again, thereby preventing the water flow from refluxing and impacting the valve, thereby protecting the valve from damage.

[0019] When there is no need to prevent backflow, the ring 12 can be rotated to loosen the telescopic ring 13, and then the telescopic ring 13 can be pulled open to stretch the main pipe head 10 and the auxiliary pipe head 11. At this time, the auxiliary pipe head 11 slides away from the main pipe head 10, and the abutment shaft 16 can be driven by the slide rod 14 to move away from the main pipe head 10. At this time, the abutment shaft 16 can abut the baffle 15 to open the baffle 15. When water flows back, it is blocked by the abutment shaft 16, and the baffle 15 cannot close the square groove. Whether the anti-backflow function is needed can be adjusted according to the use environment.

[0020] Obviously, the described embodiments are only a part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

Claims

1. A backflow prevention valve pipe, comprising a main pipe head (10), characterized in that: The main pipe head (10) is sleeved with a telescopic ring (13), a secondary pipe head (11) is fixed to a side of the telescopic ring (13) away from the main pipe head (10), and flow-blocking components are installed on the secondary pipe head (11) and the main pipe head (10); The flow-blocking assembly comprises a baffle (15) rotating in the main pipe head (10), and two symmetrical sliding rods (14) fixed on the auxiliary pipe head (11), wherein the sliding rods (14) slide in the main pipe head (10), and an abutment shaft (16) is vertically fixed at the end of the sliding rod (14), and the abutment shaft (16) abuts against the baffle (15).

2. The anti-backflow valve pipe according to claim 1, characterized in that: A collar (12) is rotatably connected to the outer peripheral side of the main pipe head (10), and the collar (12) is threadably connected to the telescopic ring (13).

3. The anti-backflow valve pipe according to claim 1, characterized in that: A square groove is provided on one side of the main pipe joint (10) close to the auxiliary pipe joint (11), and the baffle (15) is located in the square groove. The baffle (15) is also arranged in a square shape.

4. The anti-backflow valve pipe according to claim 3, characterized in that: Slide grooves are provided on both sides of the square groove, and the slide rod (14) is installed in the slide grooves.

5. The anti-backflow valve pipe according to claim 1, characterized in that: The abutment shaft (16) is located on a side of the baffle plate (15) away from the auxiliary pipe head (11), and the abutment shaft (16) is located at a position slightly above the center of the baffle plate (15).

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