Connecting structure of three-bend forward flushing spray pipe

Abstract

The utility model discloses a connecting structure of a three-bend forward-flushing spray pipe, which comprises a short joint, a double-end nut, a large bend, a small bend, a buckle nut and a punch, two ends of the large bend are provided with external threads II, and the short joint and the small bend are connected through the buckle nut; positioning groove structures are arranged in inner holes in the two ends of the large elbow, and plug structures matched with the positioning groove structures are arranged at the ends, facing the large elbow, of the short connector and the small elbow. According to the connecting structure of the three-bend front flushing spray pipe, an effective anti-loosening structure is adopted, and loosening of the punch can be prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of sprinkler truck accessories, in particular to a connection structure of a three-bend forward-flushing spray pipe. Background Art

[0002] The three-bend forward-flushing nozzle is widely used in sprinkler trucks, especially in sanitation and garden maintenance. This nozzle can accurately control the spray direction of the water flow and effectively cover the area that needs to be cleaned or watered. There are two main types of forward-flushing nozzles for sprinkler trucks: three-bend forward-flushing and duckbill nozzles. The three-bend forward-flushing nozzle occupies an important position in the operation of sprinkler trucks due to its adjustability and flexibility. The three-bend forward-flushing water gun is one of the main spraying devices of the sprinkler truck. It is mainly composed of interconnected short joints, large elbows, small elbows, mouth nuts and punches. The connection method of adjacent pipe sections is threaded connection. The defect of this water gun is that the threaded connection is greatly affected by vibration and is easy to loosen, resulting in water spray failure or leakage. Especially when used in sprinkler trucks, due to the mechanical vibration of the sprinkler truck itself and the vibration caused by uneven road surface during driving, the water gun is always in a relatively strong vibration environment. The phenomenon of loose threaded connection is more obvious, resulting in changes in the angle of the punch, and the water spray cannot be stable, which requires regular inspection and maintenance.

[0003] Therefore, it is necessary to develop a connection structure of a three-bend forward nozzle to address the above defects. Utility Model Content

[0004] The utility model aims to provide a connection structure of a three-bend forward-punching nozzle, which adopts an effective anti-loosening structure and can prevent the punch from loosening.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] The utility model discloses a connection structure of a three-bend forward-flushing nozzle, comprising a short joint, a double-headed nut, a large elbow, a small elbow, a buckle nut and a punch; both ends of the large elbow are externally threaded, and the short joint and the small elbow are connected by the buckle nut; the inner holes at both ends of the large elbow are provided with a positioning groove structure, and the short joint and the small elbow are provided with a plug structure matched with the positioning groove structure at one end facing the large elbow.

[0007] Furthermore, the positioning groove structure includes a slot, and a plurality of the slots are evenly distributed on the inner wall of the inner hole of the end, and the plug structure includes plug one and plug two, and plug one and plug two are respectively arranged at one end of the short joint and the small elbow facing the large elbow; plug one and plug two are inserted into the slot.

[0008] Furthermore, the slot is a cylindrical slot, the plug one and the plug two are both cylindrical plugs, the number of the plug one and the plug two are two, and the two plugs one and two are axially symmetrically arranged at the ends of the short joint and the small elbow.

[0009] Furthermore, the positioning groove structure includes a sawtooth groove, which is arranged on the inner hole walls at both ends of the large elbow; the plug structure includes a cylindrical insert, and the front end of the cylindrical insert is an annular serration that cooperates with the sawtooth groove.

[0010] Furthermore, the inner hole of the stud nut is a threaded hole and is threadedly connected to a small elbow and a punch respectively. A sealing groove is provided in the middle of the inner hole of the stud nut and a second sealing ring is installed. The ends of the small elbow and the punch abut against the side walls of the second sealing ring. A limiting platform is provided at the ends of the small elbow and the punch, and the limiting platform abuts against the end face of the stud nut.

[0011] Furthermore, one end of the short joint connected to the external thread 2 is provided with a docking joint 1, a sealing groove is opened on the end surface of the docking joint 1 and a sealing ring 1 is installed, and the sealing ring 1 is arranged on the outside of the plug 1.

[0012] Compared with the prior art, the beneficial technical effects of the utility model are:

[0013] The connection structure of the three-bend forward-flushing nozzle of the utility model is provided with the positioning groove structure and the plug structure between the large elbow and the short joint, and between the large elbow and the small elbow. The positioning groove structure and the plug structure cooperate to perform circumferential locking, thereby preventing the short joint and the small elbow from loosening circumferentially relative to the large elbow when axially locked, and thus preventing the direction of the water outlet of the punch from changing.

[0014] In addition, the up and down swing angle adjustment of the large elbow is completed by switching the plug 1 between the short joint and the large elbow and inserting it into different slots, and the water outlet direction of the punch is adjusted by switching the plug 2 between the small elbow and the large elbow and inserting it into different slots. Even if the thread is loose, the water outlet direction of the punch will not be changed. By setting a limit table at the end of the small elbow and the punch, it is possible to prevent the small elbow and the punch from being excessively screwed into the inner hole of the stud nut, and to prevent the sealing ring 2 from being damaged. By setting a sealing groove and a sealing ring at both ends of the large elbow, the end faces of the two ends of the large elbow can be sealed to prevent leakage. By setting the cylindrical plug structure, a serrated groove is provided on the hole wall of the serrated groove, which can be clamped with the end tooth shape of the cylindrical plug, and then the circumferential angle can be switched after switching the matching tooth shape. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model will be further described below in conjunction with the accompanying drawings.

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the connection structure of the three-bend forward-flushing nozzle of the utility model;

[0017] Figure 2 This is a schematic diagram of the main structure of the connection structure of the three-bend forward nozzle of the utility model;

[0018] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of the middle AA part;

[0019] Figure 4 for Figure 2 A schematic diagram of the cross-sectional structure of the middle stud nut;

[0020] Figure 5 This is a schematic diagram of the three-dimensional structure of the short connector of the utility model;

[0021] Figure 6 This is a schematic diagram of the three-dimensional structure of the large elbow of the utility model;

[0022] Figure 7 It is a schematic diagram of the three-dimensional structure of the small elbow of the utility model.

[0023] Explanation of the reference numerals: 1. short connector; 101. external thread one; 102. butt connector one; 103. plug one; 104. sealing groove; 2. stud nut; 3. large elbow; 301. external thread two; 302. slot; 4. small elbow; 401. butt connector two; 402. external thread three; 403. plug two; 5. buckle nut; 6. punch; 7. sealing ring one; 8. sealing ring two. DETAILED DESCRIPTION

[0024] The core of the utility model is to provide a connection structure of a three-bend forward-punching nozzle, which adopts an effective anti-loosening structure to prevent the punch from loosening.

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0027] With reference to the accompanying drawings, Figure 1 It is a three-dimensional structural schematic diagram of the connection structure of the three-bend forward-flushing nozzle of the utility model; Figure 2 This is a schematic diagram of the main structure of the connection structure of the three-bend forward nozzle of the utility model; Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of the middle AA part; Figure 4 for Figure 2 A schematic diagram of the cross-sectional structure of the middle stud nut; Figure 5 This is a schematic diagram of the three-dimensional structure of the short connector of the utility model; Figure 6 This is a schematic diagram of the three-dimensional structure of the large elbow of the utility model; Figure 7 It is a schematic diagram of the three-dimensional structure of the small elbow of the utility model.

[0028] Example 1

[0029] like Figures 1 to 7 As shown, the connection structure of the three-bend forward-flushing nozzle of the utility model is consistent with the forward-flushing nozzle in the prior art, and also includes a short joint 1, a stud nut 2, a large elbow 3, a small elbow 4, a buckle nut 5 and a punch 6 connected by threads. The large elbow 3 is a right-angle elbow and is provided with external threads 301 at both ends, and it is connected to the short joint 1 and the small elbow 4 through the buckle nut 5. The inner holes at both ends of the large elbow 3 are provided with positioning groove structures, and the short joint 1 and the small elbow 4 are provided with a plug structure that matches the positioning groove structure at one end facing the large elbow 3.

[0030] The positioning groove structure and the plug structure are arranged between the large elbow 3 and the short joint 1, and between the large elbow 3 and the small elbow 4. The positioning groove structure and the plug structure cooperate to perform circumferential locking, thereby preventing the short joint 1 and the small elbow 4 from circumferentially loosening relative to the large elbow 3 when axially locked, thereby preventing the outlet direction of the punch 6 from changing.

[0031] In a specific embodiment of the present invention, Figure 3 , Figures 5 to 7As shown, the positioning groove structure includes a slot 302, and a plurality of slots 302 are evenly distributed on the inner wall of the inner hole of the end head. The plug structure includes a plug 103 and a plug 2 403, and the plug 103 and the plug 2 403 are respectively arranged at one end of the short connector 1 and the small elbow 4 facing the large elbow 3. The plug 103 and the plug 2 403 are inserted into the slot 302.

[0032] Specifically, if Figure 3 , Figures 5 to 7 As shown, the slot 302 is a cylindrical slot, the plug 1 103 and the plug 2 403 are both cylindrical plugs, the number of the plug 1 103 and the plug 2 403 are both two, and the two plugs 1 103 and the two plugs 2 403 are axially symmetrically arranged at the ends of the short connector 1 and the small elbow 4.

[0033] Specifically, if Figure 3 , Figures 5 to 7 As shown, the plug 1 103 and the plug 2 403 are integrally cast at the ends of the short connector 1 and the small elbow 4 respectively.

[0034] The up and down swing angle of the big elbow 3 can be adjusted by switching the plug 103 between the short joint 1 and the big elbow 3 and inserting it into different slots 302, and the direction of the water outlet of the punch 6 can be adjusted by switching the plug 2 403 between the small elbow 4 and the big elbow 3 and inserting it into different slots 302. Even if the thread is loose, the water outlet direction of the punch 6 will not be changed.

[0035] In a specific embodiment of the present invention, Figure 1 , Figure 2 and Figure 4 As shown, the inner hole of the stud nut 2 is a threaded hole and is threadedly connected to the outer thread 3 402 of the small elbow 4 and the punch 6, respectively. A sealing groove is provided in the middle of the inner hole of the stud nut 2 and a sealing ring 2 8 is installed. The ends of the small elbow 4 and the punch 6 abut against the side wall of the sealing ring 2 8 in the inner hole of the stud nut 2. A limiting platform is provided at the ends of the small elbow 4 and the punch 6, and the limiting platform abuts against the end face of the stud nut 2.

[0036] By providing a limit platform at the ends of the small elbow 4 and the punch 6, it is possible to prevent the small elbow 4 and the punch 6 from being excessively screwed into the inner hole of the stud nut 2, thereby preventing the sealing ring 8 from being damaged.

[0037] Specifically, if Figure 1 , Figure 2 and Figure 4As shown, the end of the short connector 1 connected to the external thread 2 301 is provided with a butt connector 102, a sealing groove 104 is provided on the flat end surface of the butt connector 102 and a sealing ring 7 is installed, and the sealing ring 7 is arranged on the outside of the plug 103. Similarly, a butt connector 2 401 is provided at one end of the small elbow 4 facing the large elbow 3, and a sealing ring 7 is also provided on the flat end surface of the butt connector 2 401.

[0038] By providing sealing grooves and sealing rings at both ends of the large elbow 3, the end faces at both ends of the large elbow 3 can be sealed to prevent leakage.

[0039] The installation process of the connection structure of the three-bend forward flushing nozzle in this embodiment is as follows: the short connector 1 first passes through a buckle nut 5 and is threadedly connected to the two ends of the horizontal pipe on the front side of the sprinkler truck, and the sealing ring 104 on the flat end surface of the connector 10 is installed. The large elbow 3 is connected, and it is noted that the upper and lower swing angles of the large elbow 3 meet the requirements. The plug 103 is inserted into the slot 302 to lock the swing angle of the large elbow 3, and the buckle nut 5 is locked. The small elbow 4 is connected, and the external thread 2 301 is connected through another buckle nut 5, and the small elbow 4 is locked. In this process, it is necessary to select the position where the two plugs 2 403 are inserted into the slot 302 to lock the swing angle of the small elbow 4. The small elbow 4 and the punch 6 are connected through the stud nut 2. It is noted that the end limit platform of the small elbow 4 and the punch 6 does not continue to be tightened when it contacts the stud nut 2. At this time, the sealing ring 2 8 plays a sealing role between the small elbow 4 and the punch 6 end.

[0040] Example 2

[0041] This embodiment is formed by changing the positioning groove structure and the plug structure on the basis of the above-mentioned embodiment 1. The positioning groove structure includes a sawtooth groove, and the sawtooth groove is arranged on the inner hole wall at both ends of the large elbow 3. The plug structure includes a cylindrical plug, and the front end of the cylindrical plug is an annular sawtooth that matches the sawtooth groove.

[0042] By providing the cylindrical plug structure, a serrated groove is provided on the hole wall of the serrated groove, which can engage the end tooth shape of the cylindrical plug, and then the circumferential angle can be switched after switching the matching tooth shape.

[0043] In summary, the connection structure of the three-bend forward-flushing nozzle of the utility model is provided by arranging the positioning groove structure and the plug structure between the large elbow 3 and the short joint 1, and between the large elbow 3 and the small elbow 4. The positioning groove structure and the plug structure cooperate to perform circumferential locking, so as to prevent the short joint 1 and the small elbow 4 from loosening circumferentially relative to the large elbow 3 under the condition of axial locking, and thus prevent the direction of the water outlet of the punch 6 from changing. In addition, the up and down swing angle adjustment of the large elbow 3 is completed by switching the plug 103 between the short joint 1 and the large elbow 3 and inserting it into different slots 302, and the water outlet direction adjustment of the punch 6 is completed by switching the plug 2 403 between the small elbow 4 and the large elbow 3 and inserting it into different slots 302. Even if the thread is loose, the water outlet direction of the punch 6 will not be changed. By arranging a limit table at the end of the small elbow 4 and the punch 6, the small elbow 4 and the punch 6 can be prevented from being excessively screwed into the inner hole of the stud nut 2, and the sealing ring 2 8 can be prevented from being damaged. By providing sealing grooves and sealing rings at both ends of the large elbow 3, the end faces of both ends of the large elbow 3 can be sealed to prevent leakage. By providing the cylindrical plug structure, the hole wall of the serrated groove is provided with a serrated groove, which can be engaged with the end tooth shape of the cylindrical plug, and the circumferential angle can be switched after switching the matching tooth shape.

[0044] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0045] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A connection structure of a three-bend forward-flushing nozzle, comprising a short joint (1), a double-headed nut (2), a large elbow (3), a small elbow (4), a buckle nut (5) and a punch (6), characterized in that: Both ends of the large elbow (3) are provided with external threads (301), which are connected to the short joint (1) and the small elbow (4) through the buckle nut (5); the inner holes at both ends of the large elbow (3) are provided with positioning groove structures, and the short joint (1) and the small elbow (4) are provided with plug structures that cooperate with the positioning groove structures at one end facing the large elbow (3).

2. The connection structure of the three-bend forward nozzle according to claim 1 is characterized in that: The positioning groove structure comprises a slot (302), and a plurality of the slots (302) are evenly distributed on the inner wall of the inner hole of the end head. The plug structure comprises a plug 1 (103) and a plug 2 (403), and the plug 1 (103) and the plug 2 (403) are respectively arranged at one end of the short connector (1) and the small elbow (4) facing the large elbow (3); the plug 1 (103) and the plug 2 (403) are inserted into the slot (302).

3. The connection structure of the three-bend forward nozzle according to claim 2 is characterized in that: The slot (302) is a cylindrical slot, the plug one (103) and the plug two (403) are both cylindrical plugs, the number of the plug one (103) and the plug two (403) are both two, and the two plugs one (103) and two plugs two (403) are axially symmetrically arranged at the ends of the short connector (1) and the small elbow (4).

4. The connection structure of the three-bend forward nozzle according to claim 1 is characterized in that: The positioning groove structure comprises a sawtooth groove, and the sawtooth groove is arranged on the inner hole wall of the two ends of the large elbow (3); the plug structure comprises a cylindrical plug, and the front end of the cylindrical plug is an annular sawtooth that matches the sawtooth groove.

5. The connection structure of the three-bend forward nozzle according to claim 1 is characterized in that: The inner hole of the stud nut (2) is a threaded hole and is threadedly connected to the small elbow (4) and the punch (6) respectively; a sealing groove is provided in the middle of the inner hole of the stud nut (2) and a second sealing ring (8) is installed; the ends of the small elbow (4) and the punch (6) abut against the side wall of the second sealing ring (8); and the ends of the small elbow (4) and the punch (6) are provided with a limiting platform, and the limiting platform abuts against the end surface of the stud nut (2).

6. The connection structure of the three-bend forward nozzle according to claim 3 is characterized in that: One end of the short joint (1) connected to the second external thread (301) is provided with a docking joint (102), the end surface of the docking joint (102) is provided with a sealing groove and is installed with a sealing ring (7), and the sealing ring (7) is arranged on the outside of the plug (103).

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