Overload protection nozzle

Abstract

The utility model relates to an overload protection nozzle which comprises a sealing ball, a baffle, a spring, a limiting block, an outer shell, a rotating spray head and a bearing, the bearing, the rotating spray head and the outer shell are coaxially arranged, a bearing inner ring is sleeved on an outer ring of the rotating spray head and rotates together with the rotating spray head, and a bearing outer ring is sleeved on an inner ring of the outer shell and rotates together with the rotating spray head. A top plate is arranged in an inner cavity of the outer shell, a limiting block is connected with the top plate, a spring is located above the top plate of the outer shell and below a baffle, the baffle is located between the spring and a sealing ball, the sealing ball is installed at an inlet of the outer shell, and the spring jacks up the baffle to enable the sealing ball to make contact with an inclined face at the inlet of the outer shell. The spring cannot be compressed again, and the overload protection effect is achieved.

Description

Technical Field

[0001] This utility model relates to an overload protection nozzle, which is suitable for places where spray cooling, humidification and efficiency improvement are required and where a large spray area is required. Background Technology

[0002] The existing air-cooled cooling load is low and cannot meet the on-site production needs. During the high temperatures of summer, the processing capacity has to be reduced, which reduces the plant's capacity and greatly affects the manufacturer's economic benefits.

[0003] To address this issue and increase the load on the air cooler in summer, liquid water is sprayed onto the surface of the finned tubes in the form of fine droplets. This evaporation absorbs heat, thereby reducing the temperature of the medium inside the finned tubes and decreasing the load on the air cooler. A special nozzle capable of uniformly spraying liquid water onto the finned tubes over a large area has been designed. For example, Chinese patent document CN 212943549 U discloses a self-shutdown rotary nozzle. In this nozzle, the inner ring of a bearing is concentrically fitted onto the outer surface of a rotating head with an inclined outlet, rotating together with the rotating head. The outer shell is concentrically fitted onto the outer surface of the outer ring of the bearing. A top plate is provided within the inner cavity of the outer shell. A sealing ball and a spring are installed between the top plate and the outer shell inlet. The spring presses the sealing ball against the inclined surface of the outer shell inlet, forming the self-shutdown rotary nozzle.

[0004] However, this type of nozzle does not have overload protection for the spring and relies solely on the sealing ball to control the liquid volume. When the pressure at the inlet is high, the spring compression is too great. Long-term overload will cause the spring wire to gradually deform. Since the spring is not guided, it is easy to cause the spring body to twist and may break, ultimately damaging the spring. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, this utility model provides an overload protection nozzle that protects the spring and increases the service life of the nozzle.

[0006] To achieve the above-mentioned objectives, the technical solution adopted by this utility model is as follows:

[0007] An overload protection nozzle includes a sealing ball, a baffle, a spring, a limiting block, a housing, a rotating nozzle, and a bearing. The bearing, rotating nozzle, and housing are arranged coaxially. The inner ring of the bearing is fitted onto the outer ring of the rotating nozzle and rotates together with the rotating nozzle. The outer ring of the bearing is fitted onto the inner ring of the housing. The inner cavity of the housing has a top plate, and the limiting block is connected to the top plate. The spring is located above the top plate and below the baffle. The baffle is located between the spring and the sealing ball. The sealing ball is installed at the entrance of the housing. The spring lifts the baffle so that the sealing ball contacts the inclined surface at the entrance of the housing. When the baffle contacts the limiting block, the spring can no longer be compressed, thus achieving the overload protection function.

[0008] The upper part of the overload protection nozzle housing is threaded, allowing the overload protection nozzle to be installed at the pipeline interface via a threaded connection.

[0009] The nozzle sealing ball is made of non-metallic soft material, which can undergo slight deformation under certain pressure to form a sealing surface with the inlet slope of the outer shell, preventing liquid water from entering and realizing the nozzle shut-off action.

[0010] The upper part of the baffle is provided with a groove to ensure that the sealing ball is in close contact with the baffle, and the lower part of the baffle is provided with a positioning post to allow the spring to contact the baffle through the positioning post.

[0011] The limiting block is fixed above the top plate and outside the spring. The limiting block is provided with multiple through holes to ensure that the medium flows into the rotating nozzle in case of overload.

[0012] The main innovation of the device lies in:

[0013] 1. This utility model is equipped with a shut-off structure consisting of a sealing ball, a baffle, and a spring, which can realize the nozzle being normally closed under low pressure. Within the pressure range, the nozzle is in the open state. Depending on the pressure, the nozzle flow rate and spray range are different. When the pressure is too high, the nozzle flow rate and spray range are fixed, so that liquid water is sprayed in the form of water mist within the applicable range.

[0014] 2. This utility model is equipped with a limit block, a baffle and a spring to form an overload protection structure, which can ensure that the spring will not be over-compressed under large pressure, thus preventing the spring from deforming, breaking or being damaged.

[0015] 3. The nozzle of this utility model covers a large area in the form of a hollow cone, with a simple structure, low cost, and wide applicability. Attached Figure Description

[0016] Figure 1 This is an axial sectional view of the device described in this utility model;

[0017] In the diagram: 1. Sealing ball; 2. Baffle; 3. Spring; 4. Limiting block; 5. Outer shell; 6. Rotating nozzle; 7. Bearing; 8. Outer shell inlet; 9. Top plate; 10. Liquid medium;

[0018] Figure 2 yes Figure 1 AA sectional view. Detailed Implementation

[0019] The scope of protection of this utility model patent is not limited to the following embodiments, which help to better understand the technical features of this patent:

[0020] This utility model relates to an overload protection nozzle, such as Figure 1The diagram shown is a typical structural diagram of the device, including a sealing ball 1, a baffle 2, a spring 3, a limiting block 4, an outer shell 5, a rotating nozzle 6, and a bearing 7.

[0021] The bearing 7, the rotating nozzle 6, and the outer casing 5 are arranged coaxially. The inner ring of the bearing 7 is fitted onto the outer ring of the rotating nozzle 6 and rotates together with the rotating nozzle 6. The outer ring of the bearing 7 is fitted onto the inner ring of the outer casing 5. The inner cavity of the outer casing 5 is provided with a top plate 9, which is connected to a limiting block 4. A spring 3 is provided on the inner ring of the limiting block 4. The spring 3 is installed between the top plate 9 and the baffle 2 of the outer casing 5. The baffle 2 is lifted by the spring 3 and contacts the outer casing 5. The baffle 2 causes the sealing ball 1 to contact the inclined surface at the inlet of the outer casing 5, which can block the inflow of liquid medium 10 under low pressure. The inlet of the outer casing 5 is in the form of an external thread, and the equipment can be installed at the pipeline interface through a threaded connection.

[0022] The sealing ball contacts the inlet of the outer casing 5 through the groove of the baffle, realizing the shut-off action of the nozzle. Under the action of the spring, low-pressure liquid media cannot enter the nozzle. When the pressure reaches the applicable range, the nozzle is in the open state. Depending on the pressure, the nozzle flow rate and spray range are different. When the pressure is too high, the baffle contacts the limit block, so that the spring is no longer compressed. This also ensures that the spring will not be deformed, broken or damaged due to over-compression. Thus, the liquid water is sprayed in the form of water mist within the applicable range, and the service life of the nozzle is extended, achieving the overload protection function.

Claims

1. An overload protection nozzle, comprising a sealing ball (1), a baffle (2), a spring (3), a limiting block (4), a housing (5), a rotating nozzle (6), and a bearing (7), characterized in that: The bearing (7), the rotating nozzle (6), and the outer shell (5) are arranged coaxially. The inner ring of the bearing (7) is fitted onto the outer ring of the rotating nozzle (6) and rotates together with the rotating nozzle (6). The outer ring of the bearing (7) is fitted onto the inner ring of the outer shell (5). The inner cavity of the outer shell (5) is provided with a top plate, and the limiting block (4) is connected to the top plate. The spring (3) is located above the top plate of the outer shell (5) and below the baffle (2). The baffle (2) is located between the spring (3) and the sealing ball (1). The sealing ball (1) is installed at the entrance of the outer shell (5). The spring (3) lifts the baffle (2) so that the sealing ball (1) contacts the inclined surface at the entrance of the outer shell (5). When the baffle (2) contacts the limiting block (4), the spring (3) can no longer be compressed, thus achieving overload protection.

2. The overload protection nozzle according to claim 1, characterized in that: The upper part of the overload protection nozzle housing (5) is in the form of an external thread, which allows the overload protection nozzle to be installed at the pipeline interface in the form of a threaded connection.

3. The overload protection nozzle according to claim 1, characterized in that: The sealing ball (1) is a non-metallic soft material that can undergo slight deformation under certain pressure, forming a sealing surface with the inlet slope of the outer shell (5) to prevent liquid water from entering and realize the shut-off action of the nozzle.

4. The overload protection nozzle according to claim 1, characterized in that: The upper part of the baffle (2) is provided with a groove so that the sealing ball (1) is in close contact with the baffle (2). The lower part of the baffle (2) is provided with a positioning post so that the spring (3) contacts the baffle (2) through the positioning post.

5. The overload protection nozzle according to claim 1, characterized in that: The limiting block (4) is fixed above the top plate and outside the spring (3). The limiting block (4) is provided with multiple through holes to ensure that the medium flows into the rotating nozzle (6) when overloaded.

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