CN210522843U

CN210522843U - Rotary damping spray head

Info

Publication number: CN210522843U
Application number: CN201920983118.9U
Authority: CN
Inventors: 张军立
Original assignee: Chongqing Jiemeng Environmental Protection Technology Co Ltd
Current assignee: Chongqing Jiemeng Environmental Protection Technology Co Ltd
Priority date: 2019-06-27
Filing date: 2019-06-27
Publication date: 2020-05-15
Anticipated expiration: 2029-06-27

Abstract

The utility model discloses a rotary damping spray head, belonging to the field of high-pressure cleaning equipment, comprising a spray head shell provided with a water inlet joint, a rotating shaft provided with a jet flow channel and a rotary nozzle fixed at the water outlet end of the rotating shaft; the rotating shaft is rotatably connected in the spray head shell; the water inlet end and the water outlet end of the rotating shaft are internally provided with a communicated water inlet joint and a friction sealing assembly of the jet flow channel to be connected, the sealing assembly comprises a fixed sealing piece fixed in the water inlet joint and a rotary sealing piece fixed at the water inlet end of the rotating shaft, and the fixed sealing piece and the rotary sealing piece are in mutual contact and the contact surface of the fixed sealing piece and the rotary sealing piece is perpendicular to the rotating shaft. The utility model has the advantage of low rotating speed.

Description

Rotary damping spray head

Technical Field

The utility model relates to a high pressure and ultrahigh pressure water jet field, more specifically the utility model relates to a high pressure nozzle.

Background

High-pressure water jet means a fine "water jet" that is converted into high speed water by a high-pressure water generator after pressurizing water and by a jet device having a milled bore. Such "water jets" have a great percussion energy and can perform different kinds of cleaning tasks. The high-pressure water jet is used for cleaning, and has the advantages of high efficiency, low cost, no damage to workpieces, no environmental pollution, convenient and safe operation and the like; the product is widely used in various industries and is popular in the market.

The high-pressure water jet nozzle can rotate under the action of the recoil force of the water jet, and the multi-directional cleaning is also facilitated. The speed of rotation depends on the injection angle and the water pressure. When the water pressure rises, the rotating speed rises quickly, and the jet atomization is easy to happen when the rotating speed is too high, so that a large squeaking sound is generated.

SUMMERY OF THE UTILITY MODEL

To the not enough that exists among the prior art, the utility model aims to provide a rotatory damping shower nozzle has solved among the prior art along with the hydraulic pressure when high, the too high problem of rotational speed.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a rotary damping spray head comprises a spray head shell provided with a water inlet joint, a rotating shaft provided with a jet flow channel and a rotary nozzle fixed at the water outlet end of the rotating shaft; the rotating shaft is rotatably connected in the spray head shell; the water inlet end and the water outlet end of the rotating shaft are internally provided with a communicated water inlet joint and a friction sealing assembly of the jet flow channel to be connected, the sealing assembly comprises a fixed sealing piece fixed in the water inlet joint and a rotary sealing piece fixed at the water inlet end of the rotating shaft, and the fixed sealing piece and the rotary sealing piece are in mutual contact and the contact surface of the fixed sealing piece and the rotary sealing piece is perpendicular to the rotating shaft.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses a high pressure water jet's recoil force forms the extrusion to two contact surfaces in the friction seal subassembly at the axial component of rotation axis, and then produces frictional force, underspeed. When the water pressure is high, the recoil force is large, the corresponding component force in the axial direction of the rotating shaft is also large, the friction force is increased, and the rapid increase of the rotating speed is further restrained.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

Fig. 1 is a cross-sectional view of the present invention;

fig. 2 is a cross-sectional view of a stationary seal.

The water inlet joint comprises a water inlet joint 1, a fixed sealing element 2, a rotary sealing element 3, a sealing ring 4, a bearing 5, an outer sleeve 6, a rotating shaft 7, a nozzle shell 8, a rotary nozzle 9, a jet flow channel 10, a middle column 11, a friction disc 12 and a limiting plate 13.

Detailed Description

In order to make the utility model realize that the technical means, the creation characteristics, the achievement purpose and the effect are clearer and are easy to understand, the following combination and the detailed implementation are right the utility model discloses do further explanation:

as shown in fig. 1-2, the present invention provides a rotary damping nozzle, which comprises a nozzle housing 8 provided with a water inlet joint 1, a rotating shaft 7 provided with a jet channel 10, and a rotary nozzle 9 fixed at the water outlet end of the rotating shaft 7; the rotating shaft 7 is rotatably connected in the spray head shell 8; the water inlet end and the water outlet end of the rotating shaft 7 are connected through a friction sealing assembly which is internally provided with a communicated water inlet connector 1 and a jet flow channel 10, the sealing assembly comprises a fixed sealing element 3 fixed in the water inlet connector 1 and a rotary sealing element 3 fixed at the water inlet end of the rotating shaft 7, and the fixed sealing element 2 and the rotary sealing element 3 are in mutual contact and the contact surface of the fixed sealing element and the rotary sealing element is perpendicular to the rotating shaft 7.

According to the above technical scheme, the utility model discloses a technical thought does: under the condition that the included angle between the jet flow angle and the central line of the rotating shaft 7 is not large, the friction sealing assembly is pressed tightly by the jet flow recoil force along the axial component force of the rotating shaft 7, when the water pressure is increased, the friction force is increased, and the influence caused by the increase of the water pressure is reduced.

Preferably, the fixed sealing element 2 comprises a middle column 11 of an end friction disc 12 and a limit plate 13 which is sleeved on the middle column 11 and is contacted with the friction disc 12; one end, facing the middle column 11 of the rotating shaft 7, of the bottom of the water inlet joint 1, which is not provided with the friction disc 12, is provided with a sinking platform matched with the limiting plate 13; the rotary sealing element 3 and the fixed sealing element 2 are in the same shape, a sinking platform matched with the middle column 11 of the rotary sealing element 3 is arranged at the water inlet end of the rotary shaft 7, and the end face of the rotary shaft 7 is in contact fit with the limiting plate 13; the friction discs 12 of the fixed sealing element 2 and the rotary sealing element 3 are arranged oppositely, and through holes coaxial with the jet flow channel 10 are arranged in the two middle columns 11. The middle column 11 is used for connecting with the bottom of the water inlet joint 1 and the end of the rotating shaft 7 in a sunken mode, and the limiting plate 13 ensures the connecting position and further ensures the position of the friction disc 12. The friction disc 12 is made of wear-resistant hard alloy, and the use is guaranteed. During operation, after entering from the water inlet joint 1, the water jet flows through the fixed sealing element 2 and the rotary sealing element 3 into the jet flow channel 10, and when reaching the water outlet end of the rotary shaft 7, the water jet flows through the rotary nozzle 9 to form scattered jet flows in a shunting manner, and meanwhile, two component forces of recoil force, namely axial force and tangential force, are generated. The fixed sealing element 2 and the rotary sealing element 3 are extruded with respective connecting parts when stressed, and the space is tight, so that the condition of falling and loosening can not occur.

Preferably, the rotating shaft 7 is connected with the spray head shell 8 through a plurality of bearings 5; a sealing ring 4 is arranged in front of the first bearing 5 along the jet flow direction. The sealing ring 4 is in the form of an oil seal and is required to meet high-pressure sealing. When the water pressure is high, the pressure between the fixed sealing element 2 and the rotary sealing element 3 is high, and the sealing function is achieved.

Preferably, the outer sleeve 6 of the rotary nozzle 9 is provided with a nozzle protective sleeve which is fixed on the spray head shell 8. When the cleaning device works, the nozzle is inevitably contacted with a surface to be cleaned, if the nozzle rotating at a high speed is contacted with the outside, the nozzle is easily bounced, potential safety hazards exist, after the protective sleeve is arranged, the nozzle is protected on one hand, and on the other hand, the protective sleeve can be contacted with the cleaning surface without safety problems.

Preferably, the outer sleeve 6 of the sprayer shell is provided with an outer sleeve 6 with anti-skid lines, so that the sprayer shell can be conveniently screwed when being connected with a water pipe.

It is worth explaining that the utility model discloses a structure is applicable to the rotatory nozzle 9 that the injection angle is comparatively concentrated, to the condition when rotatory nozzle 9 efflux angle is greater than 70 degrees with the condition when rotation axis 7 axis contained angle, for example the condition of perpendicular to rotation axis 7 injection, and is not suitable for, because its axial component undersize leads to friction pressure not enough, plays the effect of obvious reduction rotational speed.

Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art will understand that the present invention can be modified or replaced with other embodiments without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. A rotary damping spray head is characterized by comprising a spray head shell provided with a water inlet joint, a rotating shaft provided with a jet flow channel and a rotary nozzle fixed at the water outlet end of the rotating shaft; the rotating shaft is rotatably connected in the spray head shell; the water inlet end and the water outlet end of the rotating shaft are internally provided with a communicated water inlet joint and a friction sealing assembly of the jet flow channel to be connected, the sealing assembly comprises a fixed sealing piece fixed in the water inlet joint and a rotary sealing piece fixed at the water inlet end of the rotating shaft, and the fixed sealing piece and the rotary sealing piece are in mutual contact and the contact surface of the fixed sealing piece and the rotary sealing piece is perpendicular to the rotating shaft.

2. A rotary damping nozzle as claimed in claim 1, wherein said fixed seal comprises a central post of the end friction disk and a retainer plate disposed over the central post and in contact with the friction disk; the end, facing the rotating shaft, of the bottom of the water inlet joint, of the middle column is not provided with a friction disc, and the sinking platform is matched with the limiting plate; the rotary sealing element and the fixed sealing element are in the same shape, a sinking platform matched with a middle column of the rotary sealing element is arranged at the water inlet end of the rotary shaft, and the end surface of the rotary shaft is in contact fit with the limiting plate; the friction discs of the fixed sealing element and the rotary sealing element are arranged oppositely, and through holes coaxial with the jet flow channel are arranged in the two middle columns.

3. A rotary damped spray head as set forth in claim 2 wherein said rotatable shaft is connected to said spray head housing by a plurality of bearings; and a sealing ring is arranged in front of the first bearing along the jet flow direction.

4. A rotary damped spray head as set forth in claim 3 wherein said rotary nozzle casing is provided with a nozzle guard secured to the spray head housing.

5. A rotary damped spray head as claimed in claim 4 wherein said spray head housing jacket is provided with a slip resistant textured jacket.