Self-walking universal mop stick and cleaning method thereof

Abstract

The application relates to a self-walking universal mop rod and a cleaning method thereof, which comprises a pipe body, a movable seat, a supporting arm and a positioning support, the tail end of the pipe body is provided with a thread, and the tail end of the pipe body is connected with an external air supply device; the movable seat is movably arranged at the head end of the pipe body, and the movable seat is provided with a through hole which is connected with the inside and outside of the pipe body; the supporting arm is slidably arranged on the movable seat, when the movable seat is in a first state, the supporting arm is relatively static with the pipe body, and the supporting arm is located in the extension range of the surface of the pipe body; when the movable seat is in a second state, the supporting arm moves relatively with the movable seat, and the supporting arm is located out of the extension range of the surface of the pipe body; the positioning support is used for being fixed at a muzzle, the tail end of the pipe body is arranged in the positioning support, the pipe body can move along the axis direction of the pipe body, and self-rotation is carried out in the moving process. The cleaning area and effect can be maximized without manual operation.

Description

Technical Field

[0001] This invention relates to the field of cleaning equipment, and in particular to a self-propelled universal handwashing handle and its cleaning method. Background Technology

[0002] A cleaning wrench is a cleaning device used to clean the barrels of artillery shells. It typically consists of a wrench and a brush head. To facilitate cleaning the barrel, the brush head of the cleaning wrench usually needs to be the same size as the diameter of the barrel. A cleaning wrench is more suitable for barrels with smaller openings. However, for barrels with larger openings, it is necessary to manually use the cleaning wrench to repeatedly clean the inner wall of the barrel, which is very inconvenient and cannot guarantee the cleaning effect on the inner wall of the deeper and larger diameter barrels. Summary of the Invention

[0003] Therefore, it is necessary to provide a self-propelled universal handwashing handle and its cleaning method to address the above-mentioned technical problems, which can maximize the cleaning area and effect without manual operation.

[0004] This invention provides a self-propelled universal handwashing handle, comprising:

[0005] The pipe body has a threaded end, and the end of the pipe body is connected to an external gas supply device;

[0006] A movable seat is movably installed at the head end of the tube body, and the movable seat has a through hole connecting the inside and outside space of the tube body;

[0007] A support arm is slidably mounted on the movable seat. When the movable seat is in the first state, the support arm is relatively stationary with respect to the tube body, and the support arm is located within the extension range of the tube body surface. When the movable seat is in the second state, the support arm moves relative to the movable seat, and the support arm is located outside the extension range of the tube body surface.

[0008] A positioning bracket is used to fix the tube at the muzzle. The tail end of the tube is installed in the positioning bracket. The tube can move along its own axis and rotate during the movement.

[0009] In one embodiment, the tube body includes an upper tube body and a lower tube body, the upper tube body and the lower tube body are detachably connected, and the thread is provided on the lower tube body.

[0010] In one embodiment, the upper tube body has at least two mounting slots at its head end, which divide the head end of the upper tube body into two limiting blocks. A second limiting groove is provided on one side of the two limiting blocks opposite to each other. One end of the bottom surface of the second limiting groove is located on the same curved surface as the inner wall of the upper tube body, and the other end of the bottom surface of the second limiting groove is bent toward the axis of the upper tube body. The second limiting groove is used to limit the movable seat.

[0011] In one embodiment, the movable seat includes a fixed tube and a spherical head. The fixed tube is movably installed in the upper tube body, and the spherical head is movably installed in the second limiting groove and connected to one end of the fixed tube. The fixed tube has a plurality of through holes, and the through holes are opposite to the nearest mounting groove.

[0012] In one embodiment, one end of the fixed tube located inside the upper tube is elastically connected to the upper tube body via an elastic element. A first limiting groove is provided at the bottom end of the mounting groove. When the elastic element is in its normal state, the spherical head is spaced apart from the bent end of the bottom surface of the second limiting groove. The entire support arm is located inside the mounting groove. When the elastic element is stretched, the spherical head abuts against the bent end of the bottom surface of the second limiting groove, and one end of the support arm is located outside the mounting groove.

[0013] In one embodiment, the support arm includes a connecting portion, an extension portion, and a rotating portion. The connecting portion is slidably mounted on the spherical head. One end of the extension portion is connected to the connecting portion, and the rotating portion is mounted on the other end of the connecting portion. When the movable seat is in a first state, the connecting portion is located on one side of the spherical head, and the rotating portion is engaged in the first limiting groove. When the movable seat is in a second state, the rotating portion disengages from the first limiting groove and slides to the end of the spherical head.

[0014] In one embodiment, the through-hole is tilted toward the end away from the spherical head.

[0015] In one embodiment, the positioning bracket includes an internal threaded sleeve, a support rod, and a limiting plate. The internal threaded sleeve is installed on the lower tube body. At least two support rods are provided, and the two support rods are arranged at a certain angle on the internal threaded sleeve. The limiting plate is movably installed on the support rod and can be fixed at a designated position on the support rod.

[0016] In one embodiment, the positioning bracket includes a driving device mounted on the internal threaded sleeve, and the driving end of the driving device is connected to the lower tube body in a transmission connection. When the driving device is started, it can drive the lower tube body to rotate.

[0017] The present invention also provides a cleaning method for use with any of the self-propelled universal handwashing handles described above, the method comprising:

[0018] The positioning bracket is fixed at the muzzle, and the tail end of the tube is installed inside the positioning bracket;

[0019] Connect the tail end of the pipe to an external air supply device. At this time, the support arm and the pipe are within the extension range of the pipe surface.

[0020] When the external gas supply device is started, relative movement occurs between the support arm and the movable seat. The support arm slides to the outside of the extension range of the tube surface. Gas is discharged from the through hole of the movable seat and can clean the impurities on the inner wall of the muzzle. The cleaning position can be changed by rotating the tube.

[0021] The aforementioned self-propelled universal cleaning handle and its cleaning method involve first fixing the positioning bracket at the muzzle, then inserting the entire tube into the barrel. Next, the threaded end of the tube is installed on the positioning bracket, and an external air supply device is connected to the end of the tube. At this point, the movable seat is in its first state, located at the end of the tube facing inwards from the barrel. The support arm is relatively stationary with the movable seat, extending within the tube's surface. This design prevents the cleaning handle from colliding due to its large end size during movement. When the external air supply device is activated, air enters the tube and flows towards the movable seat. At this point, the movable seat is in its second state, with the support arm moving relative to it. One end of the support arm remains connected to the movable seat, while the other end moves until it extends beyond the tube's surface and abuts against the inner wall of the barrel. This design ensures that the distance between the cleaning end and the inner wall of the barrel in the circumferential direction is not excessive, resulting in consistent cleaning performance. When the cleaning position needs to be changed, the drive device can be used to drive the tube to rotate. Since the tube is threadedly connected to the positioning bracket, when the tube rotates, it will also move along its own axis due to the influence of the thread. At this time, one side of the through hole moves along the axis of the tube, while the other side rotates around the axis of the tube, thereby maximizing the cleaning area and effect without manual operation. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1A three-dimensional structural diagram of the wash handle provided by the present invention;

[0024] Figure 2 A three-dimensional structural diagram of the upper tube body provided by the present invention;

[0025] Figure 3 A schematic diagram of the first state structure of the movable seat and support arm provided by the present invention;

[0026] Figure 4 A schematic diagram of the second state structure of the movable seat and support arm provided by the present invention;

[0027] Figure 5 A cross-sectional structural diagram of the movable seat provided by the present invention;

[0028] Figure 6 This is a schematic diagram of the first state structure of the handwashing handle provided by the present invention;

[0029] Figure 7 This is a schematic diagram of the second state structure of the handwashing handle provided by the present invention;

[0030] Figure 8 This is a schematic diagram of the positioning bracket provided by the present invention.

[0031] Figure label:

[0032] 100. Upper tube body; 110. Mounting groove; 111. First limiting groove; 120. Limiting block; 121. Second limiting groove; 200. Movable seat; 210. Fixed tube; 211. Through hole; 220. Spherical head; 221. Sliding groove; 230. Reset part; 300. Support arm; 310. Connecting part; 320. Extension part; 330. Rotating part; 400. Lower tube body; 500. Positioning bracket; 510. Internal threaded sleeve; 520. Support rod; 530. Limiting plate; 540. Drive device. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] The following is combined Figures 1 to 8 This invention describes a self-propelled universal handwashing handle and its cleaning method.

[0035] like Figure 1As shown, in one embodiment, a self-propelled universal hand sanitizer handle includes a tube body, a movable seat 200, a support arm 300, and a positioning bracket 500. The tail end of the tube body has a thread and is connected to an external air supply device. The movable seat 200 is movably mounted on the head end of the tube body and has a through hole 211 connecting the interior and exterior spaces of the tube body. The support arm 300 is slidably mounted on the movable seat 200. When the movable seat 200 is in a first state, the support arm 300 is relatively stationary with respect to the tube body and is located within the extension range of the tube body surface. When the movable seat 200 is in a second state, the support arm 300 moves relative to the movable seat 200 and is located outside the extension range of the tube body surface. The positioning bracket 500 is used to fix the handle at the muzzle. The tail end of the tube body is installed in the positioning bracket 500. The tube body can move along its own axis and rotate during the movement.

[0036] Specifically, during use, first fix the positioning bracket 500 at the muzzle, insert the entire tube into the barrel, then install the threaded end of the tube onto the positioning bracket 500, and connect the external air supply device to the end of the tank. At this time, the movable seat 200 is in the first state, and the movable seat 200 is located at the end of the tube facing into the barrel. The support arm 300 is relatively stationary with the movable seat 200, and the support arm 300 is located within the extension range of the tube surface. This structure ensures that the washing handle will not collide due to its excessively large end when it moves. When the external air supply device is started, air enters the pipe body and flows towards the movable seat 200. At this time, the movable seat 200 is in the second state, and the support arm 300 moves relative to the movable seat 200. One end of the support arm 300 is still connected to the movable seat 200, while the other end of the support arm 300 moves until it is outside the extension range of the pipe body surface and abuts against the inner wall of the barrel. This structure ensures that the distance difference between the cleaning end and the inner wall of the barrel in the circumferential direction is not too large when the cleaning handle is in use, thus ensuring a consistent cleaning effect. When it is necessary to change the cleaning position, the drive device 540 can be used to drive the pipe body to rotate. Since the pipe body is threadedly connected to the positioning bracket 500, when the pipe body rotates, it will also move along its own axis due to the influence of the thread. At this time, the through hole 211 moves along the axis of the pipe body on one side and rotates around the axis of the pipe body on the other side, thereby maximizing the cleaning area and effect without manual operation.

[0037] The aforementioned self-propelled universal handwashing pole is used by first fixing the positioning bracket 500 at the muzzle, then inserting the entire tube into the barrel, and then installing the threaded end of the tube onto the positioning bracket 500. Next, the external air supply device is connected to the end of the tank. At this time, the movable seat 200 is in the first state and is located at the end of the tube facing into the barrel. The support arm 300 is relatively stationary with respect to the movable seat 200 and is located within the extension range of the tube surface. This structural design ensures that the handwashing pole will not collide due to excessively large ends when it moves. When the external air supply device is started, air enters the pipe body and flows towards the movable seat 200. At this time, the movable seat 200 is in the second state, and the support arm 300 moves relative to the movable seat 200. One end of the support arm 300 is still connected to the movable seat 200, while the other end of the support arm 300 moves until it is outside the extension range of the pipe body surface and abuts against the inner wall of the barrel. This structure ensures that the distance difference between the cleaning end and the inner wall of the barrel in the circumferential direction is not too large when the cleaning handle is in use, thus ensuring a consistent cleaning effect. When it is necessary to change the cleaning position, the drive device 540 can be used to drive the pipe body to rotate. Since the pipe body is threadedly connected to the positioning bracket 500, when the pipe body rotates, it will also move along its own axis due to the influence of the thread. At this time, the through hole 211 moves along the axis of the pipe body on one side and rotates around the axis of the pipe body on the other side, thereby maximizing the cleaning area and effect without manual operation.

[0038] In one embodiment, the present invention provides a self-propelled universal hand sanitizer handle, the tube body including an upper tube body 100 and a lower tube body 400, the upper tube body 100 and the lower tube body 400 being detachably connected, and the lower tube body 400 being threaded.

[0039] Specifically, by configuring the tube body as a detachably connected upper tube body 100 and lower tube body 400, when installing the tube body onto the positioning bracket 500, it is not necessary to insert the entire long tube body into the gun barrel. Instead, the upper tube body 100 and lower tube body 400 are separated, the upper tube body 100 is inserted into the gun barrel, and the lower tube body 400 is installed from outside the gun barrel onto the positioning bracket 500 before connecting the upper tube body 100 and lower tube body 400. This configuration is more labor-saving and convenient than moving and installing a single, long tube body as a whole.

[0040] like Figure 2As shown in one embodiment, the present invention provides a self-propelled universal handwashing handle, wherein the upper tube 100 has at least two mounting grooves 110 at its head end, the two mounting grooves 110 dividing the head end of the upper tube 100 into two limiting blocks 120, and a second limiting groove 121 is provided on the opposite side of the two limiting blocks 120. One end of the bottom surface of the second limiting groove 121 is located on the same curved surface as the inner wall of the upper tube 100, and the other end of the bottom surface of the second limiting groove 121 bends towards the axis of the upper tube 100. The second limiting groove 121 is used to limit the movable seat 200.

[0041] Specifically, by opening an installation groove 110 at the end of the upper tube 100, at least two independent limiting blocks 120 are spaced at the end of the upper tube 100. By opening a second limiting groove 121 on the side of the limiting block 120 facing the axis of the upper tube 100, since one end of the second limiting groove 121 matches the internal space of the upper tube 100 and the other end of the second limiting groove 121 bends towards the axis of the upper tube 100, the setting of the second limiting groove 121 can provide a limit for the movable seat 200, and the setting of the installation groove 110 can provide a setting space for the support arm 300.

[0042] like Figure 3 As shown in one embodiment, the present invention provides a self-propelled universal handwashing handle. The movable base 200 includes a fixed tube 210 and a ball head 220. The fixed tube 210 is movably installed in the upper tube body 100, and the ball head 220 is movably installed in the second limiting groove 121 and connected to one end of the fixed tube 210. The fixed tube 210 has a plurality of through holes 211, and the through holes 211 are opposite to the nearest mounting groove 110.

[0043] Specifically, the fixed tube 210 is installed inside the upper tube body 100, and the through hole 211 on the fixed tube 210 is opposite to the mounting groove 110. When the movable seat 200 is in the first state, the support arm 300 is entirely located inside the mounting groove 110 and forms a complete annular structure with the limiting block 120. This also blocks the through hole 211, preventing it from being exposed to the external environment when the hand sanitizer handle is not in use, thus preventing dust and other impurities from entering the fixed tube 210. When the movable seat 200 is in the second state, the support arm 300 unfolds, directly exposing the through hole 211 to the external environment. At this time, the through hole 211 is unobstructed along its circumference. The spherical head 220 allows the movable seat 200 to fit more tightly against the curved end of the multiple second limiting grooves 121.

[0044] like Figure 4As shown in one embodiment, the present invention provides a self-propelled universal handwashing handle. One end of the fixed tube 210 located inside the upper tube 100 is elastically connected to the upper tube 100 through an elastic element. The bottom end of the mounting groove 110 is provided with a first limiting groove 111. When the elastic element is in a normal state, the spherical head 220 and the bent end of the bottom surface of the second limiting groove 121 are at a certain distance. The support arm 300 is located entirely inside the mounting groove 110. When the elastic element is stretched, the spherical head 220 abuts against the bent end of the bottom surface of the second limiting groove 121, and one end of the support arm 300 is located outside the mounting groove 110.

[0045] Specifically, when the elastic element is not subjected to external forces such as airflow impact, the spherical head 220 and the bent end of the bottom surface of the second limiting groove 121 are separated by a certain distance. Based on this distance, the end of the support arm 300 is just engaged in the first limiting groove 111. The support arm 300 is restricted by the first limiting groove 111 and cannot slide along the spherical head 220. At this time, the state of the wash handle is as follows: Figure 6 As shown. When the external air supply device connected to the lower tube 400 is started, the airflow will flow sequentially through the lower tube 400, the upper tube 100, and the fixed tube 210, and then be ejected along the through hole 211 on the fixed tube 210. When the airflow flows through the fixed tube 210, it will inevitably generate a pushing force on the fixed tube 210. This airflow pushing force can enable the fixed tube 210 to overcome the elastic restraint of the elastic element and make the spherical head 220 abut against the bent end of the second limiting groove 121. At this time, since there is no gap between the spherical head 220 and the bent end of the second limiting groove 121, the locking relationship between the end of the support arm 300 and the first limiting groove 111 is released. The support arm 300 will slide around the spherical head 220 to a position outside the extension range of the tube surface and abut against the inner wall of the barrel. At this time, the state of the handle is as follows. Figure 7 As shown.

[0046] In one embodiment, the present invention provides a self-propelled universal handwashing handle, wherein the support arm 300 includes a connecting part 310, an extension part 320, and a rotating part 330. The connecting part 310 is slidably mounted on the spherical head 220, one end of the extension part 320 is connected to the connecting part 310, and the rotating part 330 is mounted on the other end of the connecting part 310. When the movable seat 200 is in a first state, the connecting part 310 is located on one side of the spherical head 220, and the rotating part 330 is engaged in the first limiting groove 111. When the movable seat 200 is in a second state, the rotating part 330 disengages from the first limiting groove 111 and slides to the end of the spherical head 220.

[0047] Specifically, the extension 320 is telescopic, and the telescopic structure can adopt existing common telescopic structures, such as interlocking and driven by a spring. The rotating part 330 ensures that the support arm 300 will not interfere with other structures whether it is engaged in the first limiting groove 111 or disengaged from the first limiting groove 111 and abutting against the inner wall of the gun barrel, making subsequent movements more convenient. The plane formed by the rotation direction of the rotating part 330 coincides with the axial section of the upper tube 100, and preferably, the plane formed by the rotation direction of the rotating part 330 is set at a certain angle to the axial section of the upper tube 100. This structural design makes the upper tube 100 rotate more smoothly inside the gun barrel, and the rotating part 330 will not interfere with the inner wall of the gun barrel during rotation.

[0048] like Figure 5 As shown in one embodiment, the present invention provides a self-propelled universal handwashing handle, wherein a sliding groove 221 is provided on the ball head 220, and a reset member 230 is provided in the sliding groove 221. One end of the reset member 230 is connected to the connecting part 310, and the other end of the reset member 230 is connected to the top end of the ball head 220.

[0049] Specifically, when the movable seat 200 is in the first state, the rotating part 330 is engaged in the first limiting groove 111. At this time, due to the engagement between the rotating part 330 and the first limiting groove 111, the reset member 230 cannot drag the connecting part 310 towards the top of the spherical head 220 (i.e., the side away from the fixed tube 210). When the movable seat 200 is in the second state, the rotating part 330 disengages from the first limiting groove 111. At this time, due to the influence of the reset member 230, the connecting part 310 slides towards the top of the spherical head 220.

[0050] In one embodiment, the present invention provides a self-propelled universal handwashing handle, wherein the through hole 211 is inclined toward the end away from the spherical head 220.

[0051] Specifically, by setting the direction of the through hole 211 to be tilted away from the end of the spherical head 220, that is, tilted towards the inner wall of the muzzle, this setting prevents the airflow used to clean impurities in the barrel from hitting the barrel directly, thereby avoiding damage to the barrel from direct airflow. At the same time, the tilted airflow can better sweep impurities on the inner wall of the barrel to the outside of the barrel.

[0052] like Figure 8 As shown in one embodiment, the present invention provides a self-propelled universal handwashing handle. The positioning bracket 500 includes an internal threaded sleeve 510, a support rod 520, and a limiting plate 530. The internal threaded sleeve 510 is installed on the lower tube body 400. At least two support rods 520 are provided, and the two support rods 520 are arranged at a certain angle on the internal threaded sleeve 510. The limiting plate 530 is movably installed on the support rod 520 and can be fixed at a designated position on the support rod 520.

[0053] Specifically, when using it, place the inner threaded sleeve 510 at approximately the middle position of the muzzle, then adjust the limiting plate 530 on the support rod 520 and make the limiting plate 530 fit against the muzzle to fix the inner threaded sleeve 510. Since the extension part 320 can extend, the position of the inner threaded sleeve 510 can be roughly in the middle of the muzzle without the need for precise adjustment, saving time and effort.

[0054] In one embodiment, the present invention provides a self-propelled universal hand sanitizer handle, wherein the positioning bracket 500 includes a drive device 540, the drive device 540 is mounted on the internal threaded sleeve 510, and the drive end of the drive device 540 is connected to the lower tube body 400 in a transmission connection. When the drive device 540 is started, it can drive the lower tube body 400 to rotate.

[0055] Specifically, the drive device 540 will drive the lower tube 400 to rotate. Since the lower tube 400 is threadedly connected to the inner threaded sleeve 510, the lower tube 400 will also move along its own axis while rotating. During the simultaneous rotation and movement, the airflow ejected from the through hole 211 will clean the inner wall of the gun barrel in a spiral shape.

[0056] In one embodiment, a cleaning method is applied to a self-propelled universal handwashing handle according to any of the above embodiments, and the method includes the following steps:

[0057] Fix the positioning bracket 500 at the muzzle and install the tail end of the tube inside the positioning bracket 500.

[0058] Connect the tail end of the pipe to the external air supply equipment. At this time, the support arm 300 and the pipe are within the extension range of the pipe surface.

[0059] When the external gas supply equipment is started, relative movement occurs between the support arm 300 and the movable seat 200. The support arm 300 slides to the outside of the extension range of the tube surface, and the gas is discharged into the through hole 211 of the movable seat 200 to clean the impurities on the inner wall of the muzzle. The cleaning position can be changed by rotating the tube.

[0060] In the above cleaning method, the positioning bracket 500 is first fixed at the muzzle, the entire tube is placed into the barrel, the threaded end of the tube is then installed on the positioning bracket 500, and the external air supply device is connected to the end of the tank. At this time, the movable seat 200 is in the first state and is located at the end of the tube facing into the barrel. The support arm 300 is relatively stationary with respect to the movable seat 200 and is located within the extension range of the tube surface. This structure ensures that the cleaning handle will not collide due to its large end when it moves. When the external air supply device is started, air enters the pipe body and flows towards the movable seat 200. At this time, the movable seat 200 is in the second state, and the support arm 300 moves relative to the movable seat 200. One end of the support arm 300 is still connected to the movable seat 200, while the other end of the support arm 300 moves until it is outside the extension range of the pipe body surface and abuts against the inner wall of the barrel. This structure ensures that the distance difference between the cleaning end and the inner wall of the barrel in the circumferential direction is not too large when the cleaning handle is in use, thus ensuring a consistent cleaning effect. When it is necessary to change the cleaning position, the drive device 540 can be used to drive the pipe body to rotate. Since the pipe body is threadedly connected to the positioning bracket 500, when the pipe body rotates, it will also move along its own axis due to the influence of the thread. At this time, the through hole 211 moves along the axis of the pipe body on one side and rotates around the axis of the pipe body on the other side, thereby maximizing the cleaning area and effect without manual operation.

[0061] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0062] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A self-propelled universal handwashing handle, characterized in that, include: The pipe body has a threaded end, and the end of the pipe body is connected to an external gas supply device; A movable seat is movably installed at the head end of the tube body, and the movable seat has a through hole connecting the inside and outside space of the tube body; A support arm is slidably mounted on the movable seat. When the movable seat is in the first state, the support arm is relatively stationary with respect to the tube body, and the support arm is located within the extension range of the tube body surface. When the movable seat is in the second state, the support arm moves relative to the movable seat, and the support arm is located outside the extension range of the tube body surface. A positioning bracket is used to fix the tube at the muzzle. The tail end of the tube is installed in the positioning bracket. The tube can move along its own axis and rotate during the movement. The tube body includes an upper tube body and a lower tube body, and the upper tube body and the lower tube body are detachably connected; The upper tube body has at least two mounting slots at its head end, which divide the head end of the upper tube body into two limiting blocks. A second limiting slot is provided on the opposite side of the two limiting blocks. One end of the bottom surface of the second limiting groove is located on the same curved surface as the inner wall of the upper tube, and the other end of the bottom surface of the second limiting groove is bent toward the axis of the upper tube. The movable seat includes a fixed tube and a spherical head. The fixed tube is movably installed in the upper tube body, and the spherical head is movably installed in the second limiting groove and connected to one end of the fixed tube. The fixed tube has multiple through holes, and the through holes are opposite to the nearest mounting groove. The through hole is tilted toward the end away from the spherical head; One end of the fixed tube located inside the upper tube is elastically connected to the upper tube body through an elastic element. A first limiting groove is provided at the bottom end of the mounting groove. When the elastic element is in its normal state, the spherical head and the bent end of the bottom surface of the second limiting groove are at a certain distance. The entire support arm is located inside the mounting groove and blocks the through hole. When the elastic element is stretched, the spherical head abuts against the bent end of the bottom surface of the second limiting groove, and one end of the support arm is located outside the mounting groove. The support arm includes a connecting part, an extension part, and a rotating part. The connecting part is slidably mounted on the spherical head. One end of the extension part is connected to the connecting part, and the rotating part is mounted on the other end of the connecting part. When the movable seat is in the first state, the connecting part is located on one side of the spherical head, and the rotating part is engaged in the first limiting groove. When the movable seat is in the second state, the rotating part disengages from the first limiting groove and slides to the end of the spherical head.

2. The self-propelled universal handwashing handle according to claim 1, characterized in that, The thread is provided on the lower tube body.

3. A self-propelled universal handwashing handle according to claim 2, characterized in that, The second limiting groove is used to limit the movement of the movable seat.

4. A self-propelled universal handwashing handle according to claim 3, characterized in that, The positioning bracket includes an internal threaded sleeve, a support rod, and a limiting plate. The internal threaded sleeve is installed on the lower tube body. At least two support rods are provided, and the two support rods are arranged at a certain angle on the internal threaded sleeve. The limiting plate is movably installed on the support rod and can be fixed at a designated position on the support rod.

5. A self-propelled universal handwashing handle according to claim 4, characterized in that, The positioning bracket includes a driving device, which is mounted on the internal threaded sleeve, and the driving end of the driving device is connected to the lower tube body in a transmission connection. When the driving device is started, it can drive the lower tube body to rotate.

6. A cleaning method applied to a self-propelled universal handwashing handle as described in any one of claims 1 to 5, characterized in that, The method includes: The positioning bracket is fixed at the muzzle, and the tail end of the tube is installed inside the positioning bracket; Connect the tail end of the pipe to an external air supply device, at which point the support arm is within the extension range of the pipe surface. When the external gas supply device is started, relative movement occurs between the support arm and the movable seat. The support arm slides to the outside of the extension range of the tube surface. Gas is discharged from the through hole of the movable seat and can clean the impurities on the inner wall of the muzzle. The cleaning position can be changed by rotating the tube.

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