A multi-lobed spray arm

Abstract

A multi-blade spray arm, belonging to the field of rotary spray cleaning, includes multiple spray arm bodies, connecting parts, nozzles, spray arm plugs, and a clamping structure. The spray arm bodies are hollow, with one end connected to the connecting parts and the other end open. A spray arm plug is detachably mounted at the other end of the spray arm body, and a clamping groove is provided on the side of the plug away from the spray arm body. A portion of the clamping structure is disposed within the clamping groove and is also connected to the spray arm body. Nozzles are mounted on the spray arm bodies and have water outlets. The water outlets are flat, and the width of the outlet at the end away from the spray arm body is greater than the width at the end closer to the spray arm body. The detachable spray arm plugs of this invention allow for thorough cleaning of the interior of the spray arm body when cleaning or maintenance is required, and the plugs can be soaked for cleaning, resulting in excellent cleaning performance.

Description

Technical Field

[0001] A multi-blade spray arm, belonging to the field of rotary spray cleaning. Background Technology

[0002] Currently, the effectiveness of rotary spray cleaning is a major concern in various applications requiring it, especially in the medical device cleaning industry. Most existing rotary spray cleaning devices are two- or three-bladed in structure. During the cleaning process, pressurized rinsing water is sprayed from the spray nozzles to clean the medical devices. Contaminants on the medical devices are washed away by the water flow. The pressurized water flow can cause contaminants to splash and even contaminate the spray arm, which requires cleaning and maintenance of the spray arm itself.

[0003] The existing rotary spray devices mostly have blind hole structures inside the spray arm, with fixed ends, and the circular spray holes are directly set on the spray arm, which hinders the internal cleaning and maintenance of the spray arm and makes it difficult to clean medical devices in a comprehensive manner, resulting in unsatisfactory cleaning effects. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a multi-blade spray arm, wherein the spray arm plug can be detachably installed on the spray arm, and the shape of the nozzle can increase the spray area.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: the multi-blade spray arm includes multiple spray arm bodies, connecting parts, nozzles, spray arm plugs and clamping structures. The interior of the spray arm body is hollow, one end is connected to the connecting parts, and the other end of the spray arm body is open. The spray arm plug is detachably set at the opening at the other end of the spray arm body, and a clamping groove is provided on the side of the spray arm plug away from the spray arm body. A part of the clamping structure is set in the clamping groove, and the clamping structure is also connected to the spray arm body. The nozzle is mounted on the spray arm body and has a water outlet. The water outlet has a flat structure, and the width of the end of the water outlet away from the spray arm body is greater than the width of the end closer to the spray arm body.

[0006] Preferably, the spray arm plug includes a plug head and an extension part, the extension part being disposed inside the spray arm body, and the plug head being engaged at the end of the spray arm body.

[0007] Preferably, the clamping structure is a clamping ring, with two symmetrical mounting holes on the spray arm body, a clamping groove on the plug head, the middle part of the clamping ring being located in the clamping groove, and both ends of the clamping ring having extensions bent to both sides of the spray arm plug head, the ends of the extensions being bent and located in the mounting holes.

[0008] Preferably, the nozzle includes a connecting section and a water outlet section, which are integrally connected. The diameter of the water outlet section is larger than that of the connecting section. The connecting section is threadedly connected to the spray arm body, and the water outlet section is mounted on the spray arm body. A through hole is provided on the inner side of the connecting section, and the water outlet is located on the water outlet section and communicates with the through hole.

[0009] Preferably, the spray pattern of the water outlet is fan-shaped, and the included angle between the two inclined sides of the fan is 55°~65°.

[0010] Preferably, the nozzles are arranged in two rows, one row of nozzles is inclined upwards and the other row of nozzles is inclined downwards, the two rows of nozzles are staggered, and the number of downward-inclined nozzles is greater than the number of upward-inclined nozzles.

[0011] Preferably, it also includes a water inlet device. One side of the connecting member is connected to the spray arm body, and the other side is connected to the water inlet device. The connecting member includes a first connecting part and a second connecting part. The diameter of the second connecting part is larger than the diameter of the first connecting part. The spray arm body is disposed on the second connecting part. The first connecting part is connected to the water inlet device through a bearing assembly.

[0012] Preferably, the bearing assembly includes a bearing, a retaining ring, and a connecting sleeve. The first connecting part is rotatably connected to one end of the retaining ring via the bearing, and the other end of the retaining ring is threadedly connected to the sleeve. The water inlet device is connected to the sleeve.

[0013] Compared with existing technologies, the beneficial effects of this technical solution are: The spray arm plug and nozzle of this invention are detachably mounted on the spray arm body. The spray arm plug is mounted at the end of the spray arm body through a clamping structure. When the spray arm needs to be cleaned or maintained, both can be removed to thoroughly clean the inside of the spray arm body. The spray arm plug and nozzle can also be soaked for cleaning, resulting in good cleaning effect and simple operation.

[0014] The nozzle of this invention has a flat water outlet with a short width at one end and a long width at the other end, forming a fan-shaped water jet. Compared with the circular water jet from a regular circular spray hole, the spraying range is larger. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a multi-blade spray arm according to the present invention.

[0016] Figure 2 This is the front view of the present utility model.

[0017] Figure 3 for Figure 2 Enlarged view of a portion of point A in the middle.

[0018] Figure 4 for Figure 2BB section view.

[0019] Figure 5 for Figure 4 Enlarged view of a section at point C.

[0020] Figure 6 This is a front view of the nozzle of this utility model.

[0021] Figure 7 This is a top view of the nozzle of this utility model.

[0022] Figure 8 for Figure 6 DD section view.

[0023] Figure 9 This is a diagram showing the spray trajectory of the circular spray hole in this utility model.

[0024] The components include: 1. Spray arm body 101, mounting hole 2. Connecting part 201, first connecting part 202, second connecting part 3. Nozzle 301, connecting section 302, water outlet section 4. Spray arm plug 401, plug head 402, extension part 5. Clamping ring 6. Bearing 7. Fixing ring 8. Shaft retaining ring 9. Sleeve. Detailed Implementation

[0025] Figures 1-9 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figures 1-9 The present invention will be further described below.

[0026] Reference Figures 1-2 The multi-blade spray arm includes a spray arm body 1, a connecting member 2, a nozzle 3, and a spray arm plug 4. The spray arm body 1 is hollow inside and connected to the connecting member 2 at one end. The spray arm plug 4 is located at the other end of the spray arm body 1. The nozzle 3 is located on the spray arm body 1. The nozzle 3 has a water outlet on the side away from the spray arm body 1, and the diameter of the water outlet at the end away from the spray arm body 1 is larger than the diameter at the end closer to the spray arm body 1.

[0027] Specifically, the spray arm body 1 of this utility model has four blades, which are perpendicular to each other at 90° to the outer circumference of the cylindrical connecting member 2. The spray arm body 1 is cylindrical and hollow inside. The nozzles 3 on the spray arm body 1 are arranged in two rows. The two rows of nozzles 3 are arranged on one side of the spray arm body 1. The spray arm body 1 is divided into four quadrants by two center lines. The two rows of spray arms are respectively arranged in the second and fourth quadrants, or the first and third quadrants, that is, in two adjacent quadrants, forming a cleaning water flow that can rotate tangentially and clean vertically. One row of nozzles 3 has four nozzles and the other row has three nozzles. The three nozzles 3 are arranged between each pair of adjacent nozzles 3.

[0028] Reference Figure 3 The spray arm plug 4 includes a plug head 401 and an extension part 402. The cylindrical extension part 402 is press-fitted with the spray arm body 1. The plug head 401 is locked at the end of the spray arm body 1. A locking structure is provided between the spray arm plug 4 and the spray arm body 1.

[0029] The clamping structure is a clamping ring 5. Two mounting holes 101 are provided on the opposite side walls of the spray arm body 1. A clamping groove is provided on the plug head 401. The middle part of the C-shaped clamping ring 5 is set in the clamping groove, and both ends are parallel to the outer wall of the spray arm body 1. The ends extend towards the center line of the spray arm body 1. The end of the clamping ring 5 set in the mounting hole 101 is interference-fitted with the mounting hole 101.

[0030] Reference Figures 4-5 The stepped connecting member 2 includes a first connecting part 201 and a second connecting part 202. The diameter of the cylindrical second connecting part 202 is larger than the diameter of the cylindrical first connecting part 201. The spray arm body 1 is disposed on the outer circumference of the second connecting part 202. The first connecting part 201 and the second connecting part 202 are hollow inside. The first connecting part 201 is the water inlet.

[0031] The water inlet device is connected to the sleeve 9. One end of the fixing ring 7 is threaded to the sleeve 9, and the other end is rotatably connected to the first connecting part 201. A bearing 6 is provided between the fixing ring 7 and the first connecting part 201. A shaft retaining ring 8 is also provided on the first connecting part 201 to fix the axial movement of the bearing 6.

[0032] Water flows through the sleeve 9 into the first connecting part 201, and then through the second connecting part 202 to be evenly distributed into the four spray arm bodies 1. The water flow drives the four spray arm bodies 1 to rotate. The spray arm bodies 1 are fixedly connected to the second connecting part 202, which indirectly drives the first connecting part 201 and the fixed ring 7 to rotate relative to each other, so as to realize the spray cleaning of the object to be cleaned.

[0033] Reference Figures 6-8 The nozzle 3 includes a connecting section 301 and a water outlet section 302. The connecting section 301 and the water outlet section 302 are integrally formed. The water outlet section 302 is a regular hexagon, and the connecting section 301 is cylindrical. The diameter of the water outlet section 302 is larger than the diameter of the connecting section 301. The outer side of the connecting section 301 is threaded and threadedly connected to the spray arm body 1. The water outlet section 302 is locked on the outer wall of the spray arm body 1.

[0034] The inner side of the connecting section 301 is provided with a through hole, which is cylindrical. The interior of the water outlet section 302 is provided with a water outlet that communicates with the through hole. The water outlet has a flat structure, and the width of the end of the water outlet away from the spray arm body 1 is greater than the width of the end closer to the spray arm body 1. Its cross-section is trapezoidal, and it sprays out a fan-shaped spray water flow.

[0035] The water jet from the outlet of this invention is fan-shaped, with an included angle of 60° between the two hypotenuses. Therefore, the length of the jet line formed on the surface of the object being cleaned after the water jet is amplified by the fan-shaped nozzle 3 is approximately: .

[0036] Where M is the diameter of the through hole of the connecting section 301, l is the distance between the nozzle 3 and the object being cleaned, m is the height of the nozzle 3, and n is the height of the through hole.

[0037] Work process: When the present invention is working normally, the water inlet device drives a water flow with a certain power to enter the interior of the connecting member 2 through the sleeve 9. The water flow is evenly distributed into the four spray arm bodies 1 and then sprayed out by the nozzles 3. The nozzles 3 are asymmetrically installed, with four nozzles 3 on the lower side and three nozzles 3 on the upper side. The sprayed water flow is divided into tangential water flow that makes the spray arm body 1 rotate and cleaning water flow on the upper and lower sides. The total cleaning water flow on the lower side is greater than the cleaning water flow on the upper side, which plays a supporting role for the spray arm body 1.

[0038] Reference Figure 9 The nozzle 3 of this utility model has a fan-shaped water jet, which has a larger spray range compared with a circular spray hole. According to the trajectory diagram, it can thoroughly clean the object to be cleaned.

[0039] After cleaning the object, remove the nozzle 3 and the spray arm plug 4, and clean the spray arm body 1 and all the mounting parts. This is convenient and quick.

[0040] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A multi-lobed spray arm characterized by: It includes multiple spray arm bodies (1), connecting parts (2), nozzles (3), spray arm plugs (4) and clamping structures. The spray arm body (1) is hollow inside, with one end connected to the connecting parts (2) and the other end of the spray arm body (1) is open. The spray arm plug (4) is detachably installed at the other end of the spray arm body (1), and a clamping groove is provided on the side of the spray arm plug (4) away from the spray arm body (1). A part of the clamping structure is installed in the clamping groove, and the clamping structure is also connected to the spray arm body (1). The nozzle (3) is set on the spray arm body (1). The nozzle (3) has a water outlet with a flat structure. The width of the water outlet at the end away from the spray arm body (1) is greater than the width at the end close to the spray arm body (1).

2. A multi-lobed spray arm according to claim 1, wherein: The spray arm plug (4) includes a plug head (401) and an extension part (402). The extension part (402) is located inside the spray arm body (1), and the plug head (401) is engaged at the end of the spray arm body (1).

3. A multi-lobed spray arm according to claim 2, wherein: The clamping structure is a clamping ring (5). Two mounting holes (101) are symmetrically provided on the spray arm body (1). The clamping groove is provided on the plug head (401). The middle part of the clamping ring (5) is located in the clamping groove. Both ends of the clamping ring (5) have extensions that bend to both sides of the spray arm plug head (4). The ends of the extensions are bent and located in the mounting holes (101).

4. A multi-lobed spray arm according to claim 1, wherein: The nozzle (3) includes a connecting section (301) and a water outlet section (302). The connecting section (301) and the water outlet section (302) are integrally connected, and the diameter of the water outlet section (302) is larger than the diameter of the connecting section (301). The connecting section (301) is threadedly connected to the spray arm body (1). The water outlet section (302) is mounted on the spray arm body (1). The connecting section (301) has a through hole on its inner side, and the water outlet is located on the water outlet section (302) and is connected to the through hole.

5. A multi-lobed spray arm according to claim 1, wherein: The spray pattern of the water outlet is fan-shaped, with an included angle of 55° to 65° between the two hypotenuses.

6. A multi-lobed spray arm according to claim 1, wherein: The nozzle (3) is arranged in two rows. One row of nozzles (3) is inclined upwards and the other row of nozzles (3) is inclined downwards. The two rows of nozzles (3) are staggered, and the number of downward-inclined nozzles (3) is greater than the number of upward-inclined nozzles (3).

7. A multi-lobed spray arm according to claim 1, wherein: It also includes a water inlet device. One side of the connecting member (2) is connected to the spray arm body (1), and the other side is connected to the water inlet device. The connecting member (2) includes a first connecting part (201) and a second connecting part (202). The diameter of the second connecting part (202) is larger than the diameter of the first connecting part (201). The spray arm body (1) is disposed on the second connecting part (202). The first connecting part (201) is connected to the water inlet device through a bearing assembly.

8. A multi-lobed spray arm according to claim 7, wherein: The bearing assembly includes a bearing (6), a retaining ring (7) and a connecting sleeve (9). The first connecting part (201) is rotatably connected to one end of the retaining ring (7) through the bearing (6), and the other end of the retaining ring (7) is threadedly connected to the sleeve (9). The water inlet device is connected to the sleeve (9).

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