CN112772368A

CN112772368A - Self-adaptive compensation type sprinkling irrigation device

Info

Publication number: CN112772368A
Application number: CN202110141759.1A
Authority: CN
Inventors: 包攀
Original assignee: Jiangsu Zhongshui Irrigation And Drainage Equipment Co ltd
Current assignee: Jiangsu Zhongshui Irrigation And Drainage Equipment Co ltd
Priority date: 2021-02-02
Filing date: 2021-02-02
Publication date: 2021-05-11
Anticipated expiration: 2041-02-02
Also published as: CN112772368B

Abstract

The invention relates to the technical field of agricultural irrigation, in particular to a self-adaptive compensation type sprinkling irrigation device which comprises a rotating mechanism and a sprinkling irrigation mechanism, wherein a water pipe is communicated with the rotating mechanism, the rotating mechanism comprises a fixed sleeve and a rotating through pipe, the sprinkling irrigation mechanism comprises a sleeve shell and a movable sleeve, the two ends of the top and the bottom of the rotating through pipe are respectively communicated with the movable sleeve and the inner part of the fixed sleeve, and a butting spring is arranged between the top end of the sleeve shell and the movable sleeve. According to the invention, the sprinkling irrigation mechanism arranged on the rotating mechanism and the sprinkling irrigation groove with gradually-changed width are formed in the sleeve shell, so that the movable sleeve can move to different positions under different water pressures, the communication area between the sprinkling irrigation opening and the sprinkling irrigation groove is changed, the sprinkling irrigation mechanism can adaptively adjust the water flow range jetted from the sprinkling irrigation mechanism according to the water pressure, and the reduction of the effective sprinkling irrigation area caused by the jet shortening of sprinkling irrigation when the water pressure is too small is prevented.

Description

Self-adaptive compensation type sprinkling irrigation device

Technical Field

The invention relates to the technical field of agricultural irrigation, in particular to a self-adaptive compensation type sprinkling irrigation device.

Background

The spray irrigation is an irrigation mode that water with certain pressure is sprayed into the air by means of a water pump and a pipeline system or by utilizing the fall of a natural water source to be dispersed into small water drops or form mist to fall onto plants and the ground, and is widely used in the field of agricultural planting. When sprinkling irrigation to crops, because the water pressure of supplying water can appear differently for when the water pressure of supplying water is less, the shower nozzle of sprinkling irrigation can reduce the rivers pressure of spouting because of water pressure reduces, thereby makes the range of rivers shorten, and then makes the effective area of sprinkling irrigation diminish, makes some crops can't be irrigated. In view of this, we propose an adaptive compensated sprinkler.

Disclosure of Invention

The present invention is directed to a self-adaptive compensation type sprinkler irrigation device to solve the above-mentioned problems of the prior art.

In order to achieve the purpose, the invention provides the following technical scheme:

self-adaptation compensation formula sprinkling irrigation equipment includes rotary mechanism and installs the sprinkling irrigation mechanism at rotary mechanism top, rotary mechanism is linked together through water service pipe and external water source, rotary mechanism includes fixed cover and rotates to be connected the rotation siphunculus at fixed cover top, sprinkling irrigation mechanism includes that cover shell and cover establish in the cover shell and with cover shell sliding connection's movable sleeve, rotate the top of siphunculus end both ends respectively with the movable sleeve with the inside of fixed cover is linked together, the top of cover shell with be provided with the butt spring between the movable sleeve.

Preferably, the fixed sleeve is internally provided with a cavity, the bottom end of the cavity is open, the top end of the fixed sleeve is provided with a groove, the groove bottom of the groove is provided with a through hole, the groove is internally sleeved with a plurality of sealing bearings, the bottom end of the rotating through pipe extends into the cavity from the through hole, and the bottom end of the rotating through pipe is tightly matched with the inner ring of the sealing bearing.

Preferably, the rotating through pipe is of a tubular structure with a transparent top and a transparent bottom, a vertical shaft is sleeved at the bottom end of the rotating through pipe, a plurality of connecting rods are tightly welded between the vertical shaft and the inner wall of the rotating through pipe, a plurality of helical blades are tightly welded at the periphery of the bottom of the vertical shaft, and the helical blades extend into the cavity.

Preferably, a convex edge is integrally formed at the peripheral edge of the bottom end of the rotary through pipe, the outer diameter of the convex edge is larger than the inner diameter of the through hole, a sealing cover is fixed at the bottom end of the fixed sleeve, and the fixed top end of the water through pipe penetrates through the sealing cover and is fixedly connected with the sealing cover.

Preferably, a sleeve cavity is formed in the sleeve shell, the bottom end of the sleeve cavity is open, a plurality of sprinkling irrigation grooves communicated with the sleeve cavity are formed in the outer surface of the sleeve shell, the sprinkling irrigation grooves are of V-shaped groove structures, the width of each sprinkling irrigation groove gradually narrows from top to bottom, a bottom cavity is formed in the movable sleeve, the bottom end of the bottom cavity is open, a plurality of sprinkling irrigation openings communicated with the bottom cavity are formed in the outer surface of the movable sleeve, the positions of the sprinkling irrigation openings correspond to the positions of the sprinkling irrigation grooves, and the height of each sprinkling irrigation opening is smaller than the height of each sprinkling irrigation groove.

Preferably, a baffle ring is fixed on the inner wall of the top of the sleeve cavity, a square limiting hole is formed in the top end of the sleeve shell, a limiting column is fixed on the top end of the movable sleeve, the size of the limiting column is matched with that of the limiting hole and penetrates through the limiting hole, and a baffle plate is installed at the top end of the limiting column.

Preferably, the top end of the casing is provided with a plurality of vent holes communicated with the casing cavity, the bottom end of the casing cavity is in threaded connection with a bottom cover, and the top end of the rotary through pipe penetrates through the bottom cover and is fixedly connected with the bottom cover.

Preferably, an adjusting plate in an annular plate-shaped structure is sleeved at the top of the sleeve cavity, a plurality of shifting shafts are fixed on the outer end surface of the adjusting plate, a resisting plate is installed at the tail end of each shifting shaft, bolts are connected to both ends of the resisting plate in a threaded manner, one bolt is connected with the shifting shaft in a threaded manner, the other bolt is connected with the outer surface of the sleeve shell in a butting manner, a plurality of oblique sliding grooves are formed in the outer end surface of the top of the sleeve shell, and the shifting shafts penetrate through the sliding grooves and are connected with the sliding grooves in a sliding manner.

Preferably, the peripheral surface of the top of the movable sleeve is provided with a ring groove, and a sealing rubber ring is sleeved in the ring groove.

Compared with the prior art, the invention has the beneficial effects that:

the invention makes the pushing force of the water pressure to the movable sleeve different according to the difference of the water pressure which is led into the rotating mechanism from the water pipe and flows into the sprinkling irrigation mechanism through the sprinkling irrigation mechanism arranged on the rotating mechanism and the sprinkling irrigation groove with gradually changing width is arranged on the sleeve shell, so that the movable sleeve can be positioned at different positions in the sleeve shell under the action of the elastic force of the abutting spring, when the water pressure is larger, the sprinkling nozzle is aligned with the sprinkling irrigation groove at the wider position, at the moment, the water can be sprayed outwards with large flow from the sprinkling irrigation groove, the sprinkling irrigation quantity is large when the sprinkling range is far, when the water pressure is smaller, the sprinkling nozzle is aligned with the sprinkling irrigation groove at the narrower position, the sprinkling area of sprinkling irrigation is reduced, thereby the pressure of the water flow sprayed from the sprinkling irrigation groove can be increased, the aim of keeping the sprinkling irrigation distance of the water flow is achieved, and the sprinkling irrigation mechanism can adaptively, the effective area of the spray irrigation is prevented from being reduced because the jet of the spray irrigation is shortened when the water pressure is too small.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is another overall structure diagram of the present invention;

FIG. 3 is a schematic structural view of a rotating mechanism according to the present invention;

fig. 4 is a cross-sectional view of the harness of the present invention;

FIG. 5 is a schematic structural view of a rotary pipe in the present invention;

FIG. 6 is a schematic structural view of the sprinkler irrigation mechanism of the present invention;

FIG. 7 is a cross-sectional view of the housing of the present invention;

FIG. 8 is a schematic view of the structure of the adjusting plate according to the present invention;

fig. 9 is a sectional view of the slipcase of the present invention.

The meaning of the individual reference symbols in the figures is:

1. a rotation mechanism; 11. fixing a sleeve; 111. a cavity; 112. a groove; 1121. sealing the bearing; 113. a port; 114. sealing the cover; 12. rotating the through pipe; 121. a vertical axis; 1211. a connecting rod; 122. a helical blade; 123. a convex edge; 2. a sprinkling irrigation mechanism; 21. a housing; 211. a sleeve cavity; 212. spraying and irrigating a groove; 213. a baffle ring; 214. a limiting hole; 215. a vent hole; 216. an adjusting plate; 2161. a shaft is poked; 2162. a resisting plate; 217. a sliding groove; 218. a bottom cover; 22. a movable sleeve; 221. a bottom cavity; 222. a sprinkling irrigation port; 223. a limiting column; 2231. a baffle plate; 224. a ring groove; 2241. sealing the rubber ring; 226. an abutment spring; 3. a water pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Referring to fig. 1 to 9, the present invention provides a technical solution:

self-adaptation compensation formula sprinkling irrigation equipment, include rotary mechanism 1 and install the sprinkling irrigation mechanism 2 at rotary mechanism 1 top, rotary mechanism 1 is linked together with external water source through water service pipe 3, rotary mechanism 1 includes fixed cover 11 and rotates the rotation siphunculus 12 of connecting at fixed cover 11 top, sprinkling irrigation mechanism 2 includes that cover shell 21 overlaps and establishes in cover shell 21 and with cover shell 21 sliding connection's movable sleeve 22, the top bottom both ends of rotating siphunculus 12 are linked together with the inside of movable sleeve 22 and fixed cover 11 respectively, outside water supply enters into rotary mechanism 1 in the back again along rotating siphunculus 12 and enters into sprinkling irrigation mechanism 2 and outside sprinkling irrigation through water service pipe 3. An abutting spring 226 is arranged between the top end of the sleeve 21 and the movable sleeve 22, and after irrigation water enters the sprinkling irrigation mechanism 2, the movable sleeve 22 extrudes the abutting spring 226 under the action of water pressure, so that the movable sleeve 22 can be positioned at different positions in the sleeve 21 under different water pressures.

In the invention, a cavity 111 is formed in the fixed sleeve 11, the bottom end of the cavity 111 is open, a groove 112 is formed in the top end of the fixed sleeve 11, a through hole 113 is formed in the bottom of the groove 112, a plurality of sealing bearings 1121 are sleeved in the groove 112, the bottom end of the rotating through pipe 12 extends into the cavity 111 from the through hole 113, and the bottom end of the rotating through pipe 12 is tightly matched with the inner ring of the sealing bearing 1121, so that the movable sleeve 22 can rotate around the sleeve shell 21 at the sealing bearing 1121.

Specifically, the rotating through pipe 12 is a tubular structure with a transparent top and a transparent bottom, a vertical shaft 121 is sleeved at the bottom end of the rotating through pipe 12, a plurality of connecting rods 1211 are tightly welded between the vertical shaft 121 and the inner wall of the rotating through pipe 12, a plurality of helical blades 122 are tightly welded at the periphery of the bottom of the vertical shaft 121, and the helical blades 122 extend into the cavity 111. A convex edge 123 is integrally formed at the peripheral edge of the bottom end of the rotary through pipe 12, the outer diameter of the convex edge 123 is larger than the inner diameter of the through hole 113, a sealing cover 114 is fixed at the bottom end of the fixed sleeve 11, and the fixed top end of the water through pipe 3 penetrates through the sealing cover 114 and is fixedly connected with the sealing cover 114, so that the bottom end of the fixed sleeve 11 and the water through pipe 3 are sealed by the sealing cover 114. When irrigation water is injected into the rotating mechanism 1 from the water service pipe 3, water flow impacts the helical blade 122, and then the helical blade 122 drives the rotating through pipe 12 to rotate around the vertical shaft 121, so that the rotating through pipe 12 drives the sprinkling irrigation mechanism 2 at the top to rotate, and the irrigation water can be sprinkled to crops on the periphery.

Further, a sleeve cavity 211 is arranged in the sleeve 21, the bottom end of the sleeve cavity 211 is open, a plurality of sprinkling irrigation grooves 212 communicated with the sleeve cavity 211 are arranged on the outer surface of the sleeve 21, the sprinkling irrigation grooves 212 are of a V-shaped groove structure, the width of the sprinkling irrigation grooves 212 is gradually narrowed from top to bottom, a bottom cavity 221 is arranged in the movable sleeve 22, the bottom end of the bottom cavity 221 is open, a plurality of sprinkling irrigation openings 222 communicated with the bottom cavity 221 are arranged on the outer surface of the movable sleeve 22, the positions of the sprinkling irrigation openings 222 and the sprinkling irrigation grooves 212 correspond, the height of the sprinkling irrigation openings 222 is smaller than that of the sprinkling irrigation grooves 212, when irrigation water enters the sprinkling irrigation mechanism 2 along the rotating through pipe 12, the sleeve cavity 211 is filled with the irrigation water, at the moment, the sleeve 21 is pushed to extrude the abutting springs 226 under the action of water pressure, so that the sprinkling irrigation openings 222 can be aligned with different positions on the sprinkling irrigation grooves 212, when the water pressure is high, the sprinkling irrigation openings 222 are aligned with the sprinkling grooves, can follow the large-traffic outside water spray of sprinkling irrigation groove 212 department this moment, it is big to make the volume of sprinkling irrigation when the water spray range is far away, when water pressure is less, sprinkling irrigation mouthful 222 is aligned with the sprinkling irrigation groove 212 of narrower position, make the area of sprinkling irrigation reduce, thereby can increase rivers from the spun rivers pressure of sprinkling irrigation groove 212, reach the purpose that keeps rivers sprinkling irrigation distance, make sprinkling irrigation mechanism 2 can follow the rivers range that sprinkling irrigation mechanism 2 erupted according to water pressure self-adaptation regulation, prevent that water pressure from shortening because of the effluvium of sprinkling irrigation when too little and making the effective area of sprinkling irrigation reduce.

In addition, be fixed with on the top inner wall of cover chamber 211 and keep off ring 213, when the too big top edge that makes cover 21 offsets with keeping off ring 213, keep off ring 213 and can play the effect of blockking to the motion of cover 21, the position department that the spout mouth 222 and the spout groove 212 top are widest at this moment is aligned for rivers blowout quantity at this moment is the biggest. The top of cover shell 21 is seted up and is square spacing hole 214, the top of movable sleeve 22 is fixed with spacing post 223, the size of spacing post 223 and the size looks adaptation of spacing hole 214 pass from spacing hole 214, make water pressure can prevent that cover shell 21 from taking place axial rotation and making sprinkling irrigation mouth 222 and sprinkling irrigation groove 212 take place the dislocation and cause the unable spun condition of irrigation water to take place when promoting cover shell 21 motion, baffle 2231 is installed on the top of spacing post 223, can prevent under the effect of baffle 2231 that spacing post 223 from droing from spacing hole 214.

Specifically, the top end of the case 21 is provided with a plurality of vent holes 215 communicated with the case cavity 211, so that air can enter and exit the cavity top of the bottom cavity 221 through the vent holes 215, and the case 21 can smoothly move in the movable sleeve 22. The bottom end of the sleeve cavity 211 is connected with a bottom cover 218 in a threaded manner, and the top end of the rotary through pipe 12 penetrates through the bottom cover 218 and is fixedly connected with the bottom cover 218, so that the bottom end of the sleeve 21 is sealed by the bottom cover 218 to prevent the movable sleeve 22 from falling off.

Furthermore, an adjusting plate 216 having an annular plate-shaped structure is sleeved at the top of the sleeve cavity 211, the top end of the abutting spring 226 abuts against the bottom end face of the adjusting plate 216, the abutting spring 226 is in a pre-tightening state between the movable sleeve 22 and the adjusting plate 216, a plurality of shift shafts 2161 are fixed on the outer end face of the adjusting plate 216, a resisting plate 2162 is installed at the tail end of the shift shaft 2161, bolts are connected to both ends of the resisting plate 2162 in a threaded manner, one bolt is connected with the shift shaft 2161 in a threaded manner, the other bolt abuts against the outer surface of the sleeve 21, the adjusting plate 216 can be fixed in the sleeve cavity 211 under the abutting of the bolts by screwing the other bolt, a plurality of oblique sliding grooves 217 are formed on the outer end face of the top of the sleeve 21, the shift shaft 2161 penetrates through the sliding grooves 217 and is connected with the sliding grooves 217 in a sliding manner, the shift shaft 2161 is shifted along the sliding grooves 217, so that the position of the adjusting plate 216 in the sleeve, along with the change of regulating plate 216 position, the distance between regulating plate 216 and the movable sleeve 22 top changes to reach the purpose of adjusting the butt spring 226 pretightning force, when the pretightning force of butt spring 226 is different, need promote movable sleeve 22 activity to the same position just needs different water pressure, and then reach the purpose that can reach the regulation sprinkling irrigation effect through regulating plate 216 to different positions.

It should be noted that the peripheral surface of the top of the movable sleeve 22 is provided with a ring groove 224, and a sealing rubber ring 2241 is sleeved in the ring groove 224, so that the space between the top of the movable sleeve 22 and the sleeve cavity 211 is sealed by the sealing rubber ring 2241, thereby preventing the irrigation water from leaking out of the top end of the sleeve shell 21.

In the irrigation process, the self-adaptive compensation type sprinkling irrigation device firstly injects irrigation water along the water pipe 3 so that the irrigation water can directly enter the cavity 111 in the rotating mechanism 1, then injects the irrigation water into the cavity 111 along with the irrigation water, the water flow of the irrigation water can impact the spiral blade 122 so that the spiral blade 122 drives the rotating through pipe 12 to rotate around the vertical shaft 121, so that the rotating through pipe 12 drives the sprinkling irrigation mechanism 2 at the top to rotate, finally, the irrigation water can enter the sprinkling irrigation mechanism 2 along the rotating through pipe 12 while the sprinkling irrigation mechanism 2 rotates so that the sleeve cavity 211 is filled with the irrigation water, at the moment, the sleeve 21 is pushed under the action of water pressure to extrude the abutting spring 226, so that the sprinkling irrigation opening 222 can be aligned with different positions on the sprinkling irrigation groove 212, and when the water pressure is larger, the sprinkling opening 222 is aligned with the wider position of the sprinkling groove 212, can follow the large-traffic outside water spray of sprinkling irrigation groove 212 department this moment, it is big to make the volume of sprinkling irrigation when the water spray range is far away, when water pressure is less, sprinkling irrigation mouthful 222 is aligned with the sprinkling irrigation groove 212 of narrower position, make the area of sprinkling irrigation reduce, thereby can increase rivers from the spun rivers pressure of sprinkling irrigation groove 212, reach the purpose that keeps rivers sprinkling irrigation distance, make sprinkling irrigation mechanism 2 can follow the rivers range that sprinkling irrigation mechanism 2 erupted according to water pressure self-adaptation regulation, prevent that water pressure from shortening because of the effluvium of sprinkling irrigation when too little and making the effective area of sprinkling irrigation reduce.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. Self-adaptation compensation formula sprinkling irrigation equipment, its characterized in that: including rotary mechanism (1) and installing spray irrigation mechanism (2) at rotary mechanism (1) top, rotary mechanism (1) is linked together through water service pipe (3) and external water source, rotary mechanism (1) is connected including fixed cover (11) and rotation the rotation siphunculus (12) at fixed cover (11) top, spray irrigation mechanism (2) include cover shell (21) and cover establish in cover shell (21) and with cover shell (21) sliding connection's movable sleeve (22), rotate the top of siphunculus (12) bottom both ends respectively with movable sleeve (22) with the inside of fixed cover (11) is linked together, the top of cover shell (21) with be provided with butt spring (226) between movable sleeve (22).

2. The adaptive compensated sprinkler installation of claim 1, wherein: seted up cavity (111) in fixed cover (11), the bottom of cavity (111) is open form, recess (112) are seted up on the top of fixed cover (11), opening (113) have been seted up to the tank bottom department of recess (112), a plurality of seal bearing (1121) are established to recess (112) endotheca, the bottom of rotating siphunculus (12) is followed opening (113) stretches into in cavity (111), the bottom of rotating siphunculus (12) with the inner circle tight-fitting of seal bearing (1121).

3. The adaptive compensated sprinkler installation of claim 2, wherein: rotate siphunculus (12) and be the penetrating tubular structure in top and bottom, the bottom cover that rotates siphunculus (12) is equipped with vertical axis (121), vertical axis (121) with it has a plurality of connecting rods (1211) to rotate between the inner wall of siphunculus (12), the peripheral department of bottom of vertical axis (121) closely welds a plurality of helical blade (122), helical blade (122) stretch into in cavity (111).

4. The adaptive compensated sprinkler installation of claim 3, wherein: the peripheral edge integrated into one piece in bottom of rotating siphunculus (12) has protruding edge (123) that is the convex form, the external diameter on protruding edge (123) is greater than the internal diameter of opening (113), the bottom mounting of fixed cover (11) has closing cap (114), the top end of deciding of water service pipe (3) is run through closing cap (114) and with closing cap (114) fixed connection.

5. The adaptive compensated sprinkler installation of claim 1, wherein: set cavity (211) have been seted up in cover shell (21), the bottom of cover cavity (211) is open form, set up on the surface of cover shell (21) a plurality of with spray irrigation groove (212) that cover cavity (211) are linked together, spray irrigation groove (212) are V-arrangement groove structure, the width from the top down of spray irrigation groove (212) narrows down gradually, end chamber (221) have been seted up in activity cover (22), the bottom of end chamber (221) is open form, set up on the surface of activity cover (22) a plurality of with spray irrigation mouth (222) that end chamber (221) are linked together, spray irrigation mouth (222) with the position of spray irrigation groove (212) is corresponding and the height of spray irrigation mouth (222) is less than the height of spray irrigation groove (212).

6. The adaptive compensated sprinkler installation of claim 5, wherein: be fixed with on the top inner wall of cover chamber (211) and keep off ring (213), the top of cover shell (21) has been seted up and has been square spacing hole (214), the top of movable sleeve (22) is fixed with spacing post (223), the size of spacing post (223) with the size looks adaptation of spacing hole (214) is followed pass in spacing hole (214), baffle (2231) are installed on the top of spacing post (223).

7. The adaptive compensated sprinkler installation of claim 6, wherein: the top end of the casing (21) is provided with a plurality of vent holes (215) communicated with the casing cavity (211), the bottom end of the casing cavity (211) is in threaded connection with a bottom cover (218), and the top end of the rotary through pipe (12) penetrates through the bottom cover (218) and is fixedly connected with the bottom cover (218).

8. The adaptive compensated sprinkler installation of claim 7, wherein: the utility model discloses a set of sleeve cavity (211) is characterized in that the chamber top department cover of cover chamber (211) is equipped with regulating plate (216) that is annular platelike structure, be fixed with a plurality of axles (2161) of dialling on the outer terminal surface of regulating plate (216), dial the end of axle (2161) and install and support board (2162), the equal threaded connection in both ends of the head of supporting board (2162) has the bolt, one of them bolt with dial axle (2161) threaded connection, another bolt with the surface looks butt of cover shell (21), set up a plurality of oblique sliding tray (217) that are on the outer terminal surface in top of cover shell (21), dial axle (2161) follow pass in sliding tray (217) and with sliding tray (217) sliding connection.

9. The adaptive compensated sprinkler installation of claim 8, wherein: an annular groove (224) is formed in the peripheral surface of the top of the movable sleeve (22), and a sealing rubber ring (2241) is sleeved in the annular groove (224).