CN201632937U - A rotary jet nozzle - Google Patents

Abstract

A rotary jet spray head, comprising a spray section, a straight pipe section and a joint seat which are threaded in turn, a gradually shrinking circular channel is arranged in the center of the spray section, and the centers of the spray section, the straight pipe section and the joint seat are connected to form a central water channel. A cylindrical screw rod is arranged in the axial direction in the straight pipe section, and reverse spray holes at an angle to the axis are uniformly arranged on the joint seat along its circumference, and the reverse spray holes communicate with the central water channel. This nozzle has a large impact surface and can realize automatic feeding. It has broad application prospects in the fields of coal mine gas drainage, coal seam hydraulic punching, and chemical pipeline cleaning.

Description

A rotary jet nozzle

technical field

The utility model relates to a nozzle, in particular to a high-pressure water jet nozzle.

Background technique

There are many kinds of sprinklers that drill holes with high-pressure water jets on the market. However, these high-pressure water jet nozzles only have axial force, and the striking surface is relatively small, which is not conducive to the formation of drilling holes.

Contents of the invention

The purpose of the utility model is to provide a rotating jet nozzle with a larger striking surface in view of the shortcomings of the nozzles in the prior art.

The utility model solves the technical problem and adopts the following technical solutions:

The rotary jet nozzle of the utility model includes a spraying section, a straight pipe section and a joint seat which are threaded in sequence. A gradually shrinking circular channel is arranged in the center of the spraying section. The centers of the spraying section, the straight pipe section and the joint seat are connected to form a central water channel. Its structural characteristics A cylindrical screw is arranged axially in the straight pipe section.

Structural features of the present utility model also are:

Reverse spray holes each forming an angle with the axis are uniformly arranged on the joint seat along its circumference, and the reverse spray holes communicate with the central water channel.

The injection section includes a constriction section screwed to the straight pipe section, a forward nozzle inlaid on the front side of the constriction section and a nozzle pressure cap screwed to the constriction section.

The outer circumference of the straight pipe section is uniformly welded with centering fins along the axial direction.

The outside of the section of the nozzle pressure cap is a regular hexagon; the number of the centering wings is 4-8.

The working principle of the utility model is:

The high-pressure water flow transmitted from the high-pressure rubber hose enters the straight pipe section through the joint seat, and the movement form of the jet flow in the straight pipe section is similar to the flow of high-pressure water flow in the existing nozzle, only the flow velocity in the axial direction. After the straight pipe section, the high-pressure water flow is rotated through the cylindrical screw, and then passes through the contracting section and the nozzle to form a rotating jet with axial velocity, radial velocity and tangential velocity.

Compared with the prior art, the beneficial effects of the utility model are reflected in:

1. A cylindrical screw is installed in the straight pipe section to spin the high-pressure water flow, so that the high-pressure water flow becomes a rotating jet with axial velocity, radial velocity and tangential velocity at the same time, greatly increasing the striking surface.

2. A reverse spray hole is set on the joint seat, and the reverse high-pressure water flow gives the forward thrust of the rotary jet nozzle, so that it has the function of automatic feeding, which overcomes the problem of additional drilling power during work, and simplifies the spray system.

3. A centering wing is arranged on the straight pipe section, so that the balance of the rotating jet nozzle is better. Therefore, it has broad application prospects in the fields of coal mine gas drainage, coal seam hydraulic punching, and chemical pipeline cleaning.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Symbols in the figure: 1 Nozzle pressure cap, 2 Forward nozzle, 3, Injection section, 3a contraction section, 4 Cylindrical screw, 5 Straight pipe section, 6 Centered wings, 7 Joint seat, 8 Sealing ring, 9 Sealing ring, 10 sealing rings, 11 reverse spray holes.

Detailed ways

Referring to Fig. 1, in this embodiment, the rotary jet spray head includes a spray section 3, a straight pipe section 5 and a joint seat 7 which are threaded in turn, and a gradually shrinking circular channel is arranged in the center of the spray section, and the end of the circular channel with a larger diameter is connected to the The straight pipe sections are connected, and the joints of the straight pipe section 5, the injection section 3 and the joint seat 7 are respectively provided with a sealing ring 9 and a sealing ring 10. The centers of the injection section 3 , the straight pipe section 5 and the joint seat 7 communicate to form a central water channel, and a cylindrical screw 4 is arranged in the straight pipe section 5 along the axial direction. Reverse spray holes 11 are evenly arranged on the joint seat 7 along its circumference, each forming an angle with the axis, and the reverse spray holes 11 communicate with the central water channel. The injection section 3 includes a constricted section 3a screwed to the straight pipe section 5, a forward nozzle 2 embedded in the front side of the constricted section 3a, and a nozzle pressure cap 1 threaded to the constricted section 3a. The outside of the forward nozzle 2 is a cylindrical structure, and the inside is a hollow conical shrinking structure. The outer diameter of the forward nozzle 2 is the same as the inner diameter of the groove at the end of the contraction section 3, and an O-ring 8 is installed on the mating surface. The function of the nozzle pressure cap 1 is to fix the forward nozzle 2 . On the outer circumference of the straight pipe section 5, centering fins 6 are evenly welded in the axial direction. The outer section of the nozzle pressure cap 1 is a regular hexagon, and the number of centering wings 6 is 4-8.

Claims (5)

1. A rotary jet nozzle, comprising a spray section (3), a straight pipe section (5) and a joint seat (7) which are threaded in turn, the center of the spray section is provided with a gradually shrinking circular passage, the spray section (3), the straight pipe section The center of the pipe section (5) communicates with the joint seat (7) to form a central water channel, which is characterized in that a cylindrical screw (4) is arranged axially in the straight pipe section (5). 2. The rotary jet spray head according to claim 1, characterized in that: on the joint seat (7), reverse spray holes (11) each forming an angle with the axis are evenly arranged along its circumference, and the reverse spray holes (11) Hole (11) communicates with central water channel. 3. The rotary jet spray head according to claim 1 or 2, characterized in that: the spray section (3) includes a constriction section (3a) screwed to the straight pipe section (5), embedded in the constriction section (3a) The positive nozzle (2) on the front side and the nozzle pressure cap (1) threadedly connected with the constriction section (3a). 4. The rotary jet nozzle according to claim 3, characterized in that: the outer circumference of the straight pipe section (5) is uniformly welded with centering fins (6) along the axial direction. 5. The rotary jet spray head according to claim 3, characterized in that: the outside of the section of the nozzle pressure cap (1) is a regular hexagon; the number of the centering wings (6) is 4-8 indivual.