CN107282561B - A pressure-driven, pulse-type pipe flushing brush - Google Patents

Abstract

The utility model provides a pressure drive, impulse type pipeline washing brush, includes rotary shell, front end housing, rear end housing, center pin, pressure tube, elastic brush, rotary shell is inside hollow cylinder, both ends are sealed through front end housing and rear end housing respectively around, inside hollow center pin is from the outer inner chamber of inserting rotary shell, be provided with the nozzle of a plurality of same orientation in the rotary shell lateral wall, center pin inner chamber, rotary shell's inner chamber and nozzle communicate in proper order, the outer end and the hose connection that intakes of center pin, the hose that intakes is used for inserting high-pressure medium, rotary shell provides rotatory and advancing power through the reaction force that the nozzle jetted out high-pressure medium, rotary shell rear end circumference is encircleed and is fixed with two at least elastic brushes. The invention uses high-pressure liquid or gas to drive the elastic brush to clean the inner wall of the pipeline by the rotation and forward power of the jet flow of the nozzle, and simultaneously the medium sprayed by the nozzle can also form a pulse high-pressure flushing effect on the inner wall of the pipeline, thereby having the characteristics of good cleaning effect and high bent pipe passing rate.

Description

A pressure-driven, pulse-type pipe flushing brush

Technical field

The invention relates to the technical field of industrial cleaning, specifically a pressure-driven, pulse-type pipeline flushing brush.

Background technique

Pipes are tubular devices used to transport gases or liquids. During the use of pipelines, crystals, dirt or residues are produced on the inner walls of the channels. If not cleaned effectively in time, it will affect the normal use of the pipelines. Therefore, regular cleaning of pipelines, especially pipelines with smaller diameters, is particularly important. In particular, nuclear pipelines and related heat exchanger heat transfer tubes need to be moderately cleaned on their inner walls before in-service inspection is carried out to comply with in-service inspection requirements. At present, there are many commonly used pipeline cleaning technologies, generally speaking, there are two categories: physical cleaning and chemical cleaning.

Physical cleaning includes high-pressure water jet cleaning, dry ice cleaning, PIG pipeline cleaning, steam cleaning and other technologies. Chemical cleaning is to put a cleaning solution containing chemical reagents into the pipeline to react chemically with the dirt, and then blow it clean with water or steam. Each cleaning technology has unique advantages in different fields. Among them, high-pressure water jet cleaning is the most widely used because of its advantages such as fast cleaning speed, high quality, and no environmental pollution. However, high-pressure water jet cleaning currently has long spray guns and nozzles, long lengths, and curves. Problems include low pipe passing rate, uneven cleaning, need for repeated cleaning, and unsatisfactory cleaning of the inner wall of low-pressure pipes.

Contents of the invention

The purpose of the present invention is to solve the shortcomings of the existing technology and provide a pressure-driven, pulse-type pipeline flushing brush that combines high-pressure liquid or gas jet pulse flushing with an elastic cleaning brush that rotates based on jet reaction force, which can improve cleaning efficiency. Moreover, the bent pipe has the advantages of high passing rate, uniform cleaning, and good cleaning effect. It is especially suitable for cleaning the inner walls of high-pressure pipelines with harsh working environments, such as low-pressure or medium-pressure nuclear pipelines and heat transfer pipes.

The technical solution adopted by the present invention:

A pressure-driven, pulse-type pipeline flushing brush, including a rotating shell, a front end cover, a rear end cover, a central shaft, a pressure tube, and an elastic brush. The rotating shell is a hollow cylinder with a hollow interior, and the front and rear ends pass through The front end cover and the rear end cover are sealed. The hollow central shaft extends from the outside into the inner cavity of the rotating housing. There are multiple nozzles in the same direction in the side wall of the rotating housing. The inner cavity of the central shaft and the inner cavity of the rotating housing are It is connected with the nozzle in turn, and the outer end of the central shaft is connected to the water inlet hose. The water inlet hose is used to connect to the high-pressure medium. The reaction force of the high-pressure medium sprayed out by the nozzle of the rotating shell provides the power for rotation and advancement. The rotating shell At least two elastic brushes are fixed around the rear end.

Further, the outer wall of the central shaft is covered with a pressure pipe, and the central shaft is installed inside the rotating housing through the pressure pipe.

Furthermore, the pressure pipe adopts a soft material pipe to further improve the passing rate of the cleaning elbow.

Furthermore, a positioning wheel device is installed on the side wall of the pressure pipe extending out of the rotating housing. The positioning wheel device realizes the functions of supporting and positioning the pressure pipe and supporting the flushing brush through close contact with the inner wall of the cleaning pipe.

Further, the positioning wheel device includes a connecting sleeve, a positioning wheel, and a spring. The positioning wheel relies on two connecting sleeves to connect to the pressure pipe. The two connecting sleeves are connected through a spring to realize the movement of the positioning wheel, and Keep the positioning wheel in close contact with the inner wall of the cleaning pipe, and realize the functions of supporting and positioning the pressure pipe and supporting the flushing brush through the circumferential friction of the positioning wheel.

Furthermore, the side wall of the central shaft is provided with a spiral groove, and the side wall of the rotating housing is provided with a flow channel connected to the nozzle. The spiral groove and the flow channel are interconnected to ensure that the nozzle is continuously supplied with high-pressure medium when it rotates.

Further, the elastic brush is an elastic steel sheet welded to the clamp. The clamp is arranged around the outer wall of the rotating housing. The elastic steel sheet is installed with bristles in the direction of rotation of the rotating housing as required.

Further, the bristles are wire brushes, hair brushes or rubber brushes.

Further, the nozzle is arc-shaped or linear, and the angle formed by the nozzle outlet and the axis of the rotating housing is greater than 90°.

Furthermore, deep groove rolling bearings 2 are respectively provided at the front and rear ends of the rotating housing, which can rotate in the circumferential direction under their support.

Further, the top of the front end cap is arc-shaped, spherical, spiral or chisel-shaped.

The beneficial effects of the present invention are: 1. The reaction force of medium injection is used to promote the rotation of the rotating shell and the rotation of the elastic brush. This power type has the characteristics of wide application range and few restrictions; 2. The nozzle is used to spray medium pulse cleaning and elasticity The inner wall of the pipeline is cleaned by combining brush cleaning, and the cleaning efficiency is significantly improved; 3. The length of the rotating shell is small, and the elbow passing rate is high; 4. The elastic brush and the clamp are welded into one, and fixed on the rotating shell through screws. Convenient to replace the elastic brush as a whole. 5. Quartz sand and other abrasives or chemical reagents can be added to the high-pressure medium of the flushing brush as needed to further improve the cleaning effect of the inner wall of the pipeline.

Description of the drawings

Figure 1 is a front view of a pressure-driven, pulse-type pipeline flushing brush of the present invention;

Figure 2 is a left view of the pressure-driven, pulse-type pipeline flushing brush of the present invention;

Figure 3 is a longitudinal cross-sectional view of the pressure-driven, pulse-type pipeline flushing brush of the present invention;

Fig. 4 is a cross-sectional view along line A-A in Fig. 3 .

In the picture: 1. Front end cover, 2. Deep groove rolling bearing, 3. Countersunk head screws, 4. Rotating housing, 5. Nozzle, 6. "Y" type sealing ring, 7. Rear end cover, 8. Screws, 9 , water inlet hose, 10. pressure pipe, 11. positioning wheel device, 12. central shaft, 13. elastic brush, 14. clamp, 15. spiral groove, 111. connecting sleeve, 112. positioning wheel, 113. spring.

Detailed ways

The technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention.

Please refer to Figures 1-3. One embodiment of the pressure-driven, pulse-type pipeline flushing brush of the present invention includes a rotating housing 4, a front end cover 1, a rear end cover 7, a central shaft 12, a pressure tube 10, an elastic brush 13, a positioning Wheel device 11.

The rotating housing 4 is a hollow cylinder with a certain wall thickness, and the front and rear ends are sealed by a front end cover 1 and a rear end cover 7 respectively. The top of the front end cover 1 is arc-shaped, and can also be designed as spherical, spiral or chisel-shaped according to requirements. It can be used to remove larger dirt during the advancement of the rotating housing 4, and connects the rotating housing with the countersunk head screw 3 4 connections, using sealing rings to maintain sealing.

The hollow central shaft 12 extends into the inner cavity of the rotating housing 4 from the outside. A plurality of nozzles 5 with the same orientation are provided in the side wall of the rotating housing 4, and the angle formed by the outlet of the nozzle 5 and the axis of the rotating housing 4 is greater than 90°. The inner cavity of the rotating housing 4 is connected with the inner cavity of the central shaft 12 , and at the same time, the inner cavity of the rotating housing 4 is also connected with the nozzle 5 . The outer end of the central shaft 12 is connected to the water inlet hose 9. High-pressure medium (such as liquid or gas) can enter through the water inlet hose 9, and then pass through the inner cavity of the central shaft 12, the inner cavity of the rotating housing 4, and the nozzle in sequence. 5 jet forms a jet, and its reaction force rotates the rotating housing 4 and provides a certain forward power for the rotating housing 4. The jet ejected from the nozzle 5 forms a pulse-type high-pressure flushing as the rotating housing 4 rotates; from another angle Generally speaking, the high-pressure medium provides the rotating housing 4 with the power to rotate and advance, and its own pressure also decreases, so that the entire device can be used for cleaning the inner walls of pipelines with relatively low pressure-bearing capacity.

The outer wall of the central shaft 12 is covered with a pressure pipe 10. The central shaft 12 is installed inside the rotating housing 4 through the pressure pipe 10. The side wall of the central shaft 12 is provided with a spiral groove 15, and the side wall of the rotating housing 4 is provided with a nozzle. 5 connected flow channels, the spiral groove 15 and the flow channel are interconnected to ensure that the nozzle 5 is continuously supplied with high-pressure medium when it rotates. The pressure pipe 10 can be a hard material pipe or a soft material pipe according to actual needs, so as to improve the passing rate of the cleaning elbow.

At least two elastic brushes 13 are circumferentially fixed at the rear end of the rotating housing 4. The elastic brushes 13 are closely combined with the inner wall of the pipe under the centrifugal force generated by the rotation of the rotating housing 4 and its own elasticity, and are driven by the rotating housing 4. Rotate downward to realize the function of rinsing the inner wall of the pipe. A positioning wheel device 11 is installed on the side wall of the pressure pipe 10 extending out of the rotating housing 4. The positioning wheel device 11 is a device installed on the pressure pipe to assist in supporting and positioning, and includes a connecting sleeve 111, a positioning wheel 112, and a spring. 113. The positioning wheel 112 is connected to the pressure pipe 10 by two connecting sleeves 111. The two connecting sleeves 111 are connected by a spring 113 to realize the movement of the positioning wheel 112 and maintain close contact between the positioning wheel 112 and the inner wall of the cleaning pipe. , the functions of supporting and positioning the pressure pipe 10 and supporting the flushing brush are realized through the circumferential friction of the positioning wheel 112.

As shown in Figure 4, the elastic brush 13 is an elastic steel sheet welded to the clamp 14. The elastic steel sheet is installed in the direction of the rotation of the rotating housing according to needs, such as a wire brush, a hair brush or a rubber brush. The clamp 14 is arranged around the rotating housing and fixed on the rear side of the rotating housing 4 using screws 8 . Under the action of centrifugal force, the elastic steel sheet binds the brush more closely to the inner wall of the pipeline, improving the efficiency of pipeline cleaning. The elastic steel sheet and the clamp 14 are fixed together, which facilitates the overall replacement of the elastic brush. During the working process, the medium sprayed from the nozzle 5 is sprayed onto the inner wall of the pipeline in front of the elastic brush 13, forming a pulse-type high-pressure flushing. Under the reflection of the inner wall of the pipeline, the medium is mixed with the elastic brush 13, and the inner wall of the pipeline is cleaned again. Full coverage and greatly improved cleaning efficiency.

During operation, the central shaft 12 and the pressure tube 10 remain circumferentially stationary under the support of the positioning wheel device 11 or the strength of the pressure tube 10 itself, and the rotating housing 4 rotates circumferentially under the support of the two front and rear deep groove rolling bearings 2. The inner wall of the rotating housing 4 maintains the sealing performance of the medium chamber through two "Y"-shaped sealing rings 6 at the front and rear.

During the working process, the central shaft 12, the pressure tube 10, the hose 9 and the positioning wheel device 11 are in a circumferential stationary state, while the rotating housing 4, the front end cover 1, the rear end cover 7, and the elastic brush 13 are fixed as a whole to maintain circumferential movement. The rotating power comes from the reaction force of the high-pressure medium sprayed from the nozzle 5, and the direction of rotation depends on the outlet direction of the nozzle 5.

The nozzle 5 in this embodiment has an arc structure. During the actual processing, the rotating housing 4 can be cast to ensure the geometric shape of the nozzle 5; in order to facilitate machining, the nozzle 5 can also be designed as a straight line. type nozzle, but its direction should be designed reasonably to ensure the realization of its function.

The working process of the present invention: Refer to Figure 3. The high-pressure medium liquid or gas passes through the water inlet and pressure pipe 10, flows through the hollow central shaft 12, passes through the spiral groove 15 on the side wall of the central shaft 12, and enters the rotating shell 4. The nozzle 5 sprays out from the nozzle to form a pulse-type high-pressure flushing of the inner wall of the pipeline. At the same time, it drives the rotating housing 4 and the elastic brush 13 at the rear to rotate to rinse the inner wall of the pipeline, thereby achieving efficient cleaning of the inner wall of the pipeline. Function. The elastic brush 13 has a certain tension, relies on the centrifugal force when the rotating housing 4 rotates and its own elasticity to closely contact the inner wall of the pipeline, and cooperates with the medium ejected from the nozzle to complete the cleaning of the inner wall of the pipeline.

The invention is mainly used for cleaning dirt on the inner surface of industrial pipelines and heat transfer tubes, especially for fine cleaning of dirt on the inner surface of high-pressure pipelines with harsh working environments such as nuclear pipelines and heat transfer tubes before in-service inspection. The cleaning brush uses high-pressure liquid or gas jets through the nozzle to form rotation and forward momentum to drive the elastic brush to clean the inner wall of the pipeline. At the same time, the medium ejected from the nozzle can also form a pulse-type high-pressure flushing effect on the inner wall of the pipeline. The cleaning brush has the characteristics of self-rotation, high-pressure medium and elastic brush cleaning, good cleaning effect, and high elbow passing rate.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. All are covered by the protection scope of the present invention.

Claims (6)

1. A pressure-driven and pulse type pipeline flushing brush is characterized in that: the rotary type pressure pipe comprises a rotary shell (4), a front end cover (1), a rear end cover (7), a central shaft (12), a pressure pipe (10) and elastic brushes (13), wherein the rotary shell (4) is a hollow cylinder with a hollow inside, the front end and the rear end are respectively sealed through the front end cover (1) and the rear end cover (7), the hollow central shaft (12) extends into an inner cavity of the rotary shell (4) from outside, a plurality of nozzles (5) with the same orientation are arranged in the side wall of the rotary shell (4), the inner cavity of the central shaft (12), the inner cavity of the rotary shell (4) and the nozzles (5) are sequentially communicated, the outer end of the central shaft (12) is connected with a water inlet hose (9), the water inlet hose (9) is used for connecting high-pressure medium, the rotary shell (4) is used for supplying rotary and advancing power through the reaction force of the nozzles (5), at least two elastic brushes (13) are circumferentially and fixedly arranged at the rear end of the rotary shell (4), the central shaft (12) is sleeved with the pressure pipe (10), and the central shaft (12) is arranged inside the rotary shell (4) in a mode through the pressure pipe (10); the side wall of the pressure pipe (10) extending out of the rotary shell (4) is provided with a positioning wheel device (11), and the positioning wheel device (11) realizes the functions of supporting and positioning the pressure pipe (10) and supporting a washing brush through close contact with the inner wall of a cleaning pipeline; the positioning wheel device (11) comprises a connecting sleeve (111), a positioning wheel (112) and a spring (113), wherein the positioning wheel (112) is connected with the pressure pipe (10) by means of the two connecting sleeves (111), the two connecting sleeves (111) are connected through the spring (113), the movement of the positioning wheel (112) is realized, the tight contact between the positioning wheel (112) and the inner wall of a cleaning pipeline is kept, and the functions of supporting, positioning and washing of the pressure pipe (10) are realized through the circumferential friction force of the positioning wheel (112); the side wall of the central shaft (12) is provided with a spiral groove (15), the side wall of the rotary shell (4) is provided with a water flowing groove communicated with the nozzle (5), the spiral groove (15) is communicated with the water flowing groove, and the nozzle (5) is ensured to continuously supply high-pressure medium during rotation.

2. A pressure driven, pulsed pipe flushing brush as set forth in claim 1, wherein: the pressure tube (10) is a flexible material tube to further increase the rate of passage of the purge elbow.

3. A pressure driven, pulsed pipe flushing brush as set forth in claim 1, wherein: the elastic brush (13) is an elastic steel sheet welded on the clamp (14), the clamp (14) is arranged around the outer wall of the rotary shell (4) in a circle, and the elastic steel sheet is provided with brush hair in the direction of the rotation of the rotary shell.

4. A pressure driven, pulsed pipe flushing brush as set forth in claim 1, wherein: the nozzle is arc-shaped or linear, and an included angle formed by the outlet of the nozzle (5) and the part, close to the front end cover (1), of the axis of the rotary shell (4) is larger than 90 degrees.

5. A pressure driven, pulsed pipe flushing brush as set forth in claim 1, wherein: the front end and the rear end of the rotary shell (4) are respectively provided with a deep groove rolling bearing (2), and the rotary shell (4) is supported by the deep groove rolling bearings to rotate along the circumferential direction.

6. A pressure driven, pulsed pipe flushing brush as set forth in claim 1, wherein: the top end of the front end cover (1) is arc-shaped, spherical, spiral or chisel-shaped.