A nozzle with a spiral groove flow channel

Abstract

This utility model relates to the field of nozzle technology, providing a nozzle with a spiral groove flow channel, including a nozzle body, a threaded portion, and a spray hole. The threaded portion is provided on the outside of the nozzle body, and the spray hole is opened inside the nozzle body, extending through both ends of the nozzle body. This utility model utilizes the synergistic effect of the reduced diameter design of the spray hole and the equally spaced spiral grooves on the inner wall. When the mud flows through the spray hole, it not only experiences initial acceleration due to the reduced diameter but also forms a spiral motion under the guidance of the spiral grooves. Under the dual action of centrifugal force and the acceleration due to the reduced diameter, the kinetic energy of the mud is significantly increased, providing sufficient power for subsequent flushing and cooling. The multiple spiral grooves on the inner wall of the spray hole, in guiding the spiral flow of the mud, change the mud's spray trajectory, preventing it from being limited to a single axial straight line spray but forming a jet with a spiral angle. This significantly expands the direction and range of the mud spray, enabling more comprehensive coverage of the drill bit surface.

Description

Technical Field

[0001] This utility model relates to the field of nozzle technology, and in particular to a nozzle with a spiral groove flow channel. Background Technology

[0002] During the operation of PDC drill bits, the mud nozzles, through a "hydraulic-mechanical coordination" mechanism, undertake multiple key functions such as cooling, rock clearing, rock breaking, and damage prevention. Their performance directly affects the drilling efficiency and stable use of the drill bit.

[0003] However, conventional PDC drill bit mud nozzles use a cylindrical bore design, which has significant limitations:

[0004] Due to the flow characteristics of cylindrical holes, the direction and range of mud injection are relatively limited, which greatly restricts its cooling and cleaning effect on the drill bit.

[0005] In practical applications, the drilling mud often fails to fully cover the drill bit or is not properly flushed, causing rock cuttings to accumulate on the drill bit surface and form mud blisters. This not only hinders the effective drilling of the drill bit but also accelerates its wear, affecting its service life and operational stability. Utility Model Content

[0006] The purpose of this invention is to provide a nozzle with a spiral groove flow channel, which solves the above-mentioned problems when used with this device.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a nozzle with a spiral groove flow channel, comprising a nozzle body, a threaded portion and a spray hole, wherein the nozzle body is provided with a threaded portion on the outside, and a spray hole is provided inside the nozzle body, the spray hole passing through both ends of the nozzle body, and a spiral groove is provided on the inner wall of the spray hole.

[0008] Preferably, the inner diameter of the rear end of the nozzle is larger than the inner diameter of its front end.

[0009] Preferably, multiple spiral grooves are provided, and the multiple spiral grooves are evenly distributed on the inner wall of the nozzle.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] 1. The present invention provides a nozzle with a spiral groove flow channel. Through the synergistic effect of the reduced diameter design of the nozzle orifice and the spiral grooves evenly distributed on the inner wall, the mud is not only initially accelerated due to the reduced diameter when flowing through the nozzle orifice, but also forms a spiral motion under the guidance of the spiral grooves. Under the dual action of centrifugal force and reduced diameter acceleration, the kinetic energy of the mud is greatly improved, providing sufficient power for subsequent flushing and cooling.

[0012] 2. This utility model provides a nozzle with a spiral groove flow channel. Through multiple spiral grooves on the inner wall of the nozzle, the mud's jet trajectory is altered during the spiral flow process. This prevents the mud from being limited to a single axial straight jet, instead forming a jet with a spiral angle. This significantly expands the direction and range of the mud jet, enabling more comprehensive coverage of the drill bit surface. The high-kinetic-energy and wide-range mud jet can more effectively flush away rock cuttings from the drill bit surface, preventing rock cuttings accumulation from affecting drilling. Simultaneously, the comprehensive coverage also ensures efficient cooling of the drill bit, preventing damage due to overheating.

[0013] 3. The nozzle with spiral groove flow channel provided by this utility model can ensure that the drill bit is always in good condition during the drilling process by enhancing the cooling and flushing effect, effectively improving drilling efficiency, ensuring stable use of the drill bit, and extending its service life. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a side view of the structural cross-section of this utility model;

[0016] Figure 3 This is a side view of the structure of this utility model;

[0017] Figure 4 This is a front view structural diagram of the present invention.

[0018] The reference numerals in the figure are as follows: 1. Nozzle body; 2. Threaded part; 3. Spray hole; 4. Spiral groove. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0021] Combination Figures 1 to 4 As shown, a nozzle with a spiral groove flow channel according to the present invention includes a nozzle body 1, a threaded part 2 and a spray hole 3. The nozzle body 1 is provided with a threaded part 2 on the outside and a spray hole 3 is provided inside the nozzle body 1. The spray hole 3 passes through both ends of the nozzle body 1 and a spiral groove 4 is provided on the inner wall of the spray hole 3.

[0022] The inner diameter of the rear end of nozzle 3 is larger than the inner diameter of its front end.

[0023] Multiple spiral grooves 4 are provided, and the multiple spiral grooves 4 are evenly distributed on the inner wall of the nozzle 3.

[0024] Working principle:

[0025] When the nozzle body 1 is working, the mud enters from the inlet end (large orifice end) of the nozzle body 1 through the nozzle hole 3. During the process of flowing through the nozzle hole 3, it is subjected to two key effects:

[0026] First, the reduced diameter design of the nozzle 3 initially increases the mud flow velocity. At the same time, the multiple spiral grooves 4 evenly distributed on the inner wall of the nozzle 3 guide the mud to flow along the spiral path. Under the dual influence of the centrifugal force of the spiral motion and the acceleration effect of the reduced diameter, the kinetic energy of the mud is significantly improved.

[0027] Second, due to the guiding effect of the spiral groove 4, the mud is no longer sprayed in a straight line along a single axis, but forms a jet with a spiral angle, which makes the direction of mud spraying more diverse and the coverage area significantly expanded.

[0028] Through the above process, the high-energy and wide-range sprayed mud can more effectively wash away rock cuttings on the drill bit surface and cool the drill bit comprehensively, thereby ensuring that the drill bit maintains a high-efficiency working state and a stable service life during drilling.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A nozzle with a spiral groove flow channel, comprising a nozzle body (1), a threaded portion (2), and a spray hole (3), characterized in that: The nozzle body (1) has a threaded part (2) on its outside and a spray hole (3) inside. The spray hole (3) passes through both ends of the nozzle body (1). The inner wall of the spray hole (3) is provided with a spiral groove (4). The inner diameter of the rear end of the spray hole (3) is larger than the inner diameter of its front end.

2. The nozzle with a spiral groove flow channel according to claim 1, characterized in that: The spiral groove (4) is provided in multiple ways, and the multiple spiral grooves (4) are distributed at equal intervals on the inner wall of the nozzle (3).

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