Sealing structure for water spray nozzle ball joint of watering cart

Abstract

The utility model relates to the technical field of watering carts, in particular to a sealing structure for a water spray nozzle ball joint of a watering cart, when the sealing structure is used, water from a water tank of the watering cart enters the water spray nozzle ball joint through a first flange, and the water spray nozzle ball joint conveys the water to a water spray nozzle of the watering cart for watering operation; in the up-down and left-right movement process of the water spray nozzle ball joint, the first sealing ring between the water spray nozzle ball joint and the first flange is abraded, at the moment, the second flange pushes the water spray nozzle ball joint to be close to one side of the first flange under the action of the elastic component, and the abrasion of the first sealing ring is automatically compensated; therefore, good sealing performance can be always kept between the first flange and the water spray nozzle ball joint. Under the action of the elastic component, the second flange can push the water spray nozzle ball joint to be close to the first flange, so that abrasion generated by the first sealing ring is compensated, the first sealing ring can be tightly attached to the water spray nozzle ball joint all the time, and then the sealing performance is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of sprinkler trucks, in particular to a sealing structure for the ball joint of a sprinkler nozzle. Background Art

[0002] When the double-motor electric sprinkler nozzle of a sprinkler truck is working, it has adjustment actions in the up, down, left, and right directions. The pressurized water flow will change the corresponding water flow direction, and a universal ball joint is required for the corresponding change. Therefore, the pressurized water flow must be sealed to prevent leakage. By nesting and arranging a sealing ring on the inner wall of the flange, the sealing ring abuts against the ball joint of the sprinkler nozzle to form a dynamic seal between the ball joint of the sprinkler nozzle and the flange. However, during long-term use, the sealing ring is prone to wear. After wear, the sealing ring and the ball joint of the sprinkler nozzle cannot fit tightly, resulting in water leakage.

[0003] Therefore, at present, a technical solution is needed to solve the technical problems that the sealing ring between the ball joint of the sprinkler nozzle and the flange is prone to wear during use, and after wear, the ball joint of the sprinkler nozzle and the sealing ring cannot fit tightly, resulting in leakage. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the technical problems that the sealing ring between the ball joint of the sprinkler nozzle and the flange is prone to wear during use, and after wear, the ball joint of the sprinkler nozzle and the sealing ring cannot fit tightly, resulting in leakage, and to provide a sealing structure for the ball joint of a sprinkler nozzle.

[0005] The utility model provides a sealing structure for the ball joint of a sprinkler nozzle, which includes a ball joint of the sprinkler nozzle, a first flange, a second flange, and a limit bolt. The limit bolt is respectively connected to the first flange and the second flange. An elastic component is arranged between the second flange and the nut of the limit bolt. A compression nut is sleeved on the limit bolt. The compression nut is arranged on the side of the first flange away from the second flange. The compression nut abuts against the first flange to press the first flange and the second flange on both sides of the ball joint of the sprinkler nozzle. A first sealing ring is arranged between the first flange and the ball joint of the sprinkler nozzle.

[0006] When the sealing structure for the ball joint of a sprinkler nozzle of the utility model is in use, the water from the water tank of the sprinkler truck enters the ball joint of the sprinkler nozzle through the first flange. The ball joint of the sprinkler nozzle conveys the water to the sprinkler nozzle of the sprinkler truck for sprinkling operation. During the up, down, left, and right movement of the ball joint of the sprinkler nozzle, the first sealing ring between the ball joint of the sprinkler nozzle and the first flange is worn. At this time, under the action of the elastic component, the second flange pushes the ball joint of the sprinkler nozzle to approach the first flange side, automatically compensating for the wear of the first sealing ring. In this way, a good sealing performance can always be maintained between the first flange and the ball joint of the sprinkler nozzle.

[0007] Preferably, a first annular groove is provided on the inner wall of the first flange, and the first sealing ring is nested with the first annular groove.

[0008] The installation of the first sealing ring on the inner wall of the first flange is realized.

[0009] Preferably, a second sealing ring is provided between the second flange and the nozzle ball joint.

[0010] The second sealing ring plays a supporting role for the second flange, and at the same time can prevent the second flange from directly contacting the nozzle ball joint, reducing the wear of the second flange and the nozzle ball joint.

[0011] Preferably, a second annular groove is provided on the inner wall of the second flange, and the second sealing ring is nested with the second annular groove.

[0012] The installation of the second sealing ring on the inner wall of the second flange is realized.

[0013] Preferably, the elastic member is a spring.

[0014] The installation method of the spring is simple. It can be directly sleeved on the limit bolt. Under the extrusion of the second flange and the nut of the limit bolt, a thrust is generated on one side of the second flange, making the second flange tend to approach the first flange. Thus, when the first sealing ring wears, compensation can be made in time.

[0015] Preferably, the first flange and the second flange are respectively provided with connection holes, and the limit bolt sequentially passes through the connection holes of the first flange and the connection holes of the second flange and is connected to the compression nut.

[0016] By respectively providing connection holes on the first flange and the second flange, the connection of the limit bolt with the first flange and the second flange is realized, and at the same time, the first flange and the second flange can slide on the limit bolt and tend to move relatively when subjected to the pushing action of the spring.

[0017] Preferably, the number of the limit bolts is several, and several said limit bolts are arranged in a circumferential array around the nozzle ball joint.

[0018] By connecting the first flange and the second flange with multiple limit bolts at the same time, the strength of the whole sealing structure is higher. The elastic members on each limit bolt act on the second flange, and after the first sealing ring wears, the second flange can approach the first flange more smoothly.

[0019] Preferably, a third flange is further included, the third flange is arranged between the first flange and the second flange, and a gap is provided between the third flange and the first flange and / or the second flange.

[0020] That is, a gap is provided between the third flange and the first flange, or a gap is provided between the third flange and the second flange, or gaps are provided between the third flange and both the first flange and the second flange; the added third flange supports the entire structure, facilitating the connection of the entire structure to the existing components of the sprinkler truck.

[0021] Preferably, a gasket is filled in the gap, and the gasket is a structural member made of an elastic material.

[0022] Gaskets made of elastic materials are filled between the first flange and the third flange, and between the third flange and the second flange, making the structure between the third flange and the first flange and the second flange more stable. And when leakage occurs between the first flange and the nozzle ball joint, the gasket can also form a second water sealing structure, reducing the possibility of leakage. At the same time, the gasket made of elastic material has shrinkability and can shrink adaptively when the first flange approaches the second flange, without affecting the compensatory displacement of the first flange.

[0023] Preferably, the gasket is a structural member made of rubber material.

[0024] The gasket made of rubber material has good elastic properties and can deform in time to adapt to the change in the gap width when the first flange and the second flange approach each other. At the same time, the gasket made of rubber material has good sealing performance and can reduce the possibility of leakage.

[0025] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0026] For the nozzle ball joint sealing structure of a sprinkler truck provided by the present utility model, after the first sealing ring between the first flange and the nozzle ball joint is worn during use, under the action of the elastic member, the second flange can push the nozzle ball joint towards the first flange, thereby compensating for the wear of the first sealing ring, enabling the first sealing ring to always be in close contact with the nozzle ball joint, and thus ensuring the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of the nozzle ball joint sealing structure of a sprinkler truck of the present utility model;

[0028] Figure 2 is Figure 1 The enlarged view of area A in

[0029] Figure 3 is Figure 1 The enlarged view of area B in

[0030] Figure 4 is Figure 1 The enlarged view of area C in

[0031] Markings in the figure:

[0032] 1 - Ball joint of the water spray nozzle, 2 - First flange, 21 - First annular groove, 3 - Second flange, 31 - Second annular groove, 32 - Connecting hole, 4 - Limit bolt, 41 - Nut; 5 - Elastic component, 6 - Compression nut, 7 - First sealing ring, 8 - Second sealing ring, 9 - Third flange, 10 - Gasket. Specific embodiments

[0033] The following further describes the present utility model in detail with reference to specific embodiments. However, this should not be construed as limiting the scope of the above - mentioned subject matter of the present utility model to the following embodiments. All technologies implemented based on the content of the present utility model fall within the scope of the present utility model.

[0034] In the description of the specific embodiments of the present utility model, without special instructions, the expression terms of the orientation or positional relationship indicated by "upper", "lower", "left", "right", "center", "inner", "outer", etc. are all based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product / device / equipment of the present utility model is habitually used. These terms of orientation or positional relationship are only for the convenience of describing the solution of the present utility model or simplifying the description in the specific embodiments, facilitating technicians to quickly understand the solution, rather than indicating or implying that a specific device / component / element must have a specific orientation or be constructed and operated in a specific positional relationship. Therefore, it should not be understood as a limitation to the present utility model.

[0035] In addition, for terms such as "horizontal", "vertical", "hanging", "parallel", etc., it does not mean that the corresponding device / component / element is required to be absolutely horizontal or vertical or hanging or parallel, but it can be slightly inclined or have a deviation. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but it can be slightly inclined. Or, it can be simply understood that the corresponding device / component / element is arranged in the directions of "horizontal", "vertical", "hanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still perform its function in the solution of the present utility model.

[0036] In addition, the expressions such as "first", "second", "third", etc. in the terms are only used to distinguish the description of the same or similar components, and should not be understood as emphasizing or implying the relative importance of specific components.

[0037] In addition, in the description of the embodiments of the present utility model, "several", "multiple", and "a number of" represent at least two. It can be any situation such as 2, 3, 4, 5, 6, 7, 8, 9, etc., and even more than 9.

[0038] In addition, in the description of the technical solution of the present utility model, unless otherwise clearly specified / defined / restricted, when terms such as "set", "installed", "connected", "connected", "provided with", "laid", and "arranged" appear, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be common connection means in the art such as welding, riveting, bolting, and threaded connection. Such a connection can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components.

[0039] Embodiment 1

[0040] As Figure 1 、 Figure 2 and Figure 4 shown, a sealing structure for the nozzle ball joint of a sprinkler truck includes a nozzle ball joint 1, a first flange 2, a second flange 3, and a limit bolt 4. The limit bolt 4 is respectively connected to the first flange 2 and the second flange 3. An elastic member 5 is provided between the second flange 3 and the nut 41 of the limit bolt 4. A compression nut 6 is sleeved on the limit bolt 4. The compression nut 6 is arranged on the side of the first flange 2 away from the second flange 3. The compression nut 6 abuts against the first flange 2, pressing the first flange 2 and the second flange 3 on both sides of the nozzle ball joint 1. A first sealing ring 7 is provided between the first flange 2 and the nozzle ball joint 1.

[0041] During use, the water from the water tank of the sprinkler truck enters the nozzle ball joint 1 through the first flange 2. The nozzle ball joint 1 conveys the water to the nozzle of the sprinkler truck for sprinkling operation. During the up, down, left, and right movement of the nozzle ball joint 1, the first sealing ring 7 between the nozzle ball joint 1 and the first flange 2 is worn. At this time, under the action of the elastic member 5, the second flange 3 pushes the nozzle ball joint 1 to approach the first flange 2 side, automatically compensating for the wear of the first sealing ring 7. In this way, a good sealing performance can always be maintained between the first flange 2 and the nozzle ball joint 1.

[0042] First flange 2: A first annular groove 21 is provided on the inner wall of the first flange 2. The first sealing ring 7 is nested and connected with the first annular groove 21. The first sealing ring 7 abuts against one side of the nozzle ball joint 1.

[0043] Second flange 3: A second annular groove 31 is provided on the inner wall of the second flange 3. A second sealing ring 8 is nested in the second annular groove 31. The second sealing ring 8 abuts against the side of the nozzle ball joint 1 away from the first flange 2. The second sealing ring 8 plays a supporting role for the second flange 9, and at the same time can prevent the second flange 9 from directly contacting the nozzle ball joint 1, reducing the wear of the second flange 3 and the nozzle ball joint 1.

[0044] First sealing ring 7 and second sealing ring 8: The first sealing ring 7 and the second sealing ring 8 can both be made of nickel-based hard alloy, cobalt-based hard alloy, pressureless sintered silicon carbide, reaction sintered silicon carbide, metal-impregnated graphite, polytetrafluoroethylene-filled graphite, polytetrafluoroethylene-filled glass fiber, special alumina ceramics, etc.

[0045] Elastic member 5: The elastic member 5 is a spring. The installation method of the spring is simple and can be directly sleeved on the limit bolt 4. Under the extrusion of the second flange 3 and the nut 41 of the limit bolt 4, a thrust is generated on one side of the second flange 3, causing the second flange 3 to tend to approach the first flange 2. Thus, when the first sealing ring 7 wears, compensation can be made in a timely manner.

[0046] Limit bolt 4: The first flange 2 and the second flange 3 are respectively provided with connection holes 32 adapted to the limit bolt 4. The limit bolt 4 passes through the connection hole 32 of the first flange 2 and the connection hole 32 of the second flange 3 in sequence and is connected to the compression nut 6, realizing the connection of the limit bolt 4 with the first flange 2 and the second flange 3 respectively. At the same time, the first flange 2 and the second flange 3 can slide on the limit bolt 4 and tend to move relative to each other when subjected to the pushing action of the spring; further, the number of limit bolts 4 is several, and several limit bolts 4 are arranged in a circumferential array around the nozzle ball joint 1. By connecting the first flange 2 and the second flange 3 with multiple limit bolts 4 at the same time, the strength of the entire sealing structure is higher. The elastic member 5 on each limit bolt 4 acts on the second flange 3, and after the first sealing ring 7 wears, the second flange 2 can approach the first flange 3 more smoothly.

[0047] Embodiment 2

[0048] As Figure 1 and Figure 3 shown, in this embodiment, the difference from Embodiment 1 is that it further includes a third flange 9. The third flange 9 is arranged between the first flange 2 and the second flange 3, and there is a gap between the third flange 9 and the first flange 2 or / and the second flange 3.

[0049] In this embodiment, a gap is provided between the third flange 9 and the first flange 2, or a gap is provided between the third flange 9 and the second flange 3, or gaps are provided between the third flange 9 and both the first flange 2 and the second flange 3. The added third flange 9 supports the entire structure, facilitating the connection of the entire sealing structure to the existing components of the sprinkler truck.

[0050] Further, a gasket 10 is filled in the gap. The gasket 10 is a structural member made of an elastic material, making the structure between the third flange 9, the first flange 2, and the second flange 3 more stable. When leakage occurs between the first flange 2 and the nozzle ball joint 1, the gasket 10 can also form a second sealing structure for water, reducing the possibility of leakage. At the same time, the elastic gasket 10 is shrinkable and can adaptively shrink when the first flange 2 approaches the second flange 3, without affecting the compensatory displacement of the first flange 2.

[0051] Furthermore, the gasket 10 is a structural member made of rubber. The gasket 10 made of rubber has good elastic properties and can deform in a timely manner to adapt to the change in the gap width when the first flange 2 and the second flange 3 approach each other. At the same time, the gasket 10 made of rubber has good sealing performance, which can reduce the possibility of leakage.

[0052] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A water spray nozzle ball joint sealing structure for a sprinkler truck, characterized in that: The invention comprises a water spray nozzle ball joint (1), a first flange (2), a second flange (3) and a limiting bolt (4), wherein the limiting bolt (4) is connected to the first flange (2) and the second flange (3) respectively, an elastic component (5) is arranged between the second flange (3) and the nut (41) of the limiting bolt (4), a clamping nut (6) is sleeved on the limiting bolt (4), the clamping nut (6) is arranged on the side of the first flange (2) away from the second flange (3), the clamping nut (6) abuts against the first flange (2), and the first flange (2) and the second flange (3) are pressed against the two sides of the water spray nozzle ball joint (1), and a first sealing ring (7) is arranged between the first flange (2) and the water spray nozzle ball joint (1).

2. A water spray nozzle ball joint sealing structure for a sprinkler truck according to claim 1, characterized in that: The inner wall of the first flange (2) is provided with a first annular groove (21), and the first sealing ring (7) is nested and connected with the first annular groove (21).

3. A water spray nozzle ball joint sealing structure for a sprinkler truck according to claim 1, characterized in that: A second sealing ring (8) is provided between the second flange (3) and the water nozzle ball joint (1).

4. A water spray nozzle ball joint sealing structure for a sprinkler truck according to claim 3, characterized in that: The inner wall of the second flange (3) is provided with a second annular groove (31), and the second sealing ring (8) is nested and connected with the second annular groove (31).

5. A water spray nozzle ball joint sealing structure for a sprinkler truck according to claim 1, characterized in that: The elastic component (5) is a spring.

6. A water spray nozzle ball joint sealing structure for a sprinkler truck according to claim 1, characterized in that: The first flange (2) and the second flange (3) are respectively provided with connecting holes (32), and the limiting bolt (4) passes through the connecting hole (32) of the first flange (2) and the connecting hole (32) of the second flange (3) in sequence to be connected to the clamping nut (6).

7. A water spray nozzle ball joint sealing structure for a sprinkler truck according to claim 1, characterized in that: The number of the limiting bolts (4) is a plurality, and the plurality of limiting bolts (4) are arranged in a circular array around the water spray nozzle ball joint (1).

8. A water spray nozzle ball joint sealing structure for a watering truck according to any one of claims 1 to 7, characterized in that: The invention also comprises a third flange (9), wherein the third flange (9) is arranged between the first flange (2) and the second flange (3), and a gap is provided between the third flange (9) and the first flange (2) or / and the second flange (3).

9. A water spray nozzle ball joint sealing structure for a sprinkler truck according to claim 8, characterized in that: The gap is filled with a sealing gasket (10), and the sealing gasket (10) is a structural component made of elastic material.

10. A water spray nozzle ball joint sealing structure for a sprinkler truck according to claim 9, characterized in that: The sealing pad (10) is a structural component made of rubber material.

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