CN110268956B

CN110268956B - Plastic fiber infiltrating irrigation pipe

Info

Publication number: CN110268956B
Application number: CN201910562911.6A
Authority: CN
Inventors: 不公告发明人
Original assignee: Taizhou Luqiao Kaitong Pipe Industry Co ltd
Current assignee: Taizhou Luqiao Kaitong Pipe Industry Co.,Ltd.
Priority date: 2019-06-26
Filing date: 2019-06-26
Publication date: 2021-11-23
Anticipated expiration: 2039-06-26
Also published as: CN110268956A

Abstract

The invention relates to the technical field of fiber pipes, in particular to a plastic fiber infiltrating irrigation pipe which comprises a plastic pipe, a pressing structure, a connecting structure, a fixing structure and an adjusting structure, wherein the pressing structure is arranged on the plastic pipe; the external connection at the plastic tubing presses the structure, through the setting of pressing the structure, not only can change the infiltration rate of plastic tubing when the infiltration is enough much, can also change the water yield of adjusting the structure to can avoid pressing the structure when the infiltration rate of plastic tubing changes, water pressure can not make the plastic tubing bursts, and, press the structure moreover and can also play the promotion effect to the filtration of adjusting the structure, adjust the filtering action of structure, can make the infiltration work of plastic tubing keep normally going on again.

Description

Plastic fiber infiltrating irrigation pipe

Technical Field

The invention relates to the technical field of fiber pipes, in particular to a plastic fiber infiltrating irrigation pipe.

Background

At present, most of water flows directly flow into farmlands during farmland irrigation, water and soil loss is easily caused due to the fact that the water flows are turbulent, great difficulty is increased for irrigation work, and water resources are wasted, so that a new irrigation technology is needed, the infiltrating irrigation technology is widely applied, infiltrating irrigation is an underground water-saving irrigation method which is also called underground drip irrigation, and the infiltrating irrigation pipe has the advantages of being obvious in water saving, energy saving, labor saving, yield increasing and product quality improving, and is suitable for greenhouses, fruit trees and certain field economic crops without tillage.

When the plastic fiber infiltrating irrigation pipe is installed at the bottom of the ground for use, the infiltrating irrigation pipe cannot be seen, so that the water seepage rate and the water seepage efficiency cannot be judged, and the working condition of water seepage cannot be judged, so that the water supply rate and the water supply flow cannot be controlled manually outside.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a plastic fiber infiltrating irrigation pipe, wherein a pressing structure is connected to the outer part of a plastic pipe, and through the arrangement of the pressing structure, the water seepage rate of the plastic pipe can be changed when water seepage is enough, and the water seepage quantity of an adjusting structure can also be changed, so that the situation that the plastic pipe cannot burst due to water pressure when the seepage rate of the plastic pipe is changed by the pressing structure can be avoided, and the pressing structure can also play a promoting role in filtering the adjusting structure, so that the filtering effect of the adjusting structure can be realized, and the water seepage work of the plastic pipe can be kept normally; be connected with connection structure in the one end of plastic tubing, setting through connection structure, can carry out the high-speed joint with plastic tubing and main water pipe, the one end that deviates from the plastic tubing at connection structure is connected with fixed knot structure, cooperation through fixed knot structure and connection structure is used, can make plastic tubing and main water piping connection more firm, thereby prevent the condition of main water pipe and connection structure slippage, it adjusts the structure to rotate to be connected with in the inside of connecting pipe, cooperation through adjusting structure and connection structure is used, can realize filtering to the water that gets into the plastic tubing inside from main water pipe, thereby prevent the inside jam of plastic tubing, it can dismantle with connection structure and be connected to adjust the structure, can conveniently adjust the washing of structure.

The technical scheme adopted by the invention for solving the technical problems is as follows: a plastic fiber infiltrating irrigation pipe comprises a plastic pipe, a pressing structure, a connecting structure, a fixing structure and an adjusting structure, wherein the pressing structure capable of changing the size of seepage is connected to the outside of the plastic pipe for a water supply source to pass through; one end of the plastic pipe is connected with the connecting structure for connecting the plastic pipe and the main water pipe, and one end of the connecting structure, which is far away from the plastic pipe, is connected with the fixing structure for fixing the main water pipe; the inside of the connecting structure is rotatably connected with the adjusting structure used for filtering water entering the plastic pipe from the main water pipe.

Specifically, connection structure includes connecting pipe, fixed pipe, fillet of thread and uide bushing, inside hollow cylinder structure the connecting pipe is located the one end of plastic tubing, fixed pipe is equipped with two, two fixed pipe is the symmetric relation and locates respectively the both ends of connecting pipe, just the outside diameter of fixed pipe is less than the outside diameter of connecting pipe, the uide bushing is equipped with two, two the uide bushing is the symmetric relation and is fixed in two respectively fixed pipe is mutually along with each other's one end, and two the uide bushing is inside hollow round platform column structure, the outside of fixed pipe is that the fillet of thread distributes and has the fillet of thread, just the fillet of thread is the echelonment structure.

Specifically, the fixed knot constructs including connecting rod, first clamp cover, second clamp cover, snap ring and lock nut, the connecting rod is fixed in the connecting pipe deviates from the one end of plastic tubing, semi-annular first clamp cover is fixed in the connecting rod deviates from the one end of connecting pipe, with first clamp cover shape and size homogeneous phase the second clamp cover locate the one end of first clamp cover, semi-annular the snap ring is equipped with a plurality ofly, and a plurality ofly the snap ring is parallel relationship of each other and locates first clamp cover with the inside that the second pressed from both sides the cover, first clamp cover with the second clamp cover passes through lock nut can dismantle the connection.

Specifically, adjust the structure and include fixed cover, seal cover, bull stick, protruding ring, rubber buffer, commentaries on classics ball, limbers and filter screen, fixed cover be vertical relation weld in the outside of connecting pipe, seal cover threaded connection in fixed cover deviates from the one end of connecting pipe, just the outside of seal cover is hexagonal, the bull stick rotate connect in the seal cover, rubber buffer sliding connection in the inside of fixed cover, just the rubber buffer is fixed in the outside of bull stick, protruding ring is equipped with a plurality ofly, and is a plurality of protruding ring is that mutual parallel relation locates the inside of fixed cover, the commentaries on classics ball is fixed in the bottom of bull stick, just the commentaries on classics ball with the connecting pipe rotates and is connected, the filter screen is equipped with two, two the filter screen is that symmetrical relation is fixed in the both ends of commentaries on classics ball, the limbers is equipped with a plurality ofly, the plurality of water through holes are all arranged in the rotary ball, and are of continuous S-shaped structures.

Specifically, the pressing structure comprises a fixed sleeve, a pressing block, a stand column, a fixed rod, a slide rod, a rubber sleeve, an ejector rod, a water seepage hole, a sponge plate, a sliding plate and a spring, the fixed sleeve is fixed at the outer part of the plastic pipe, the inner part of the fixed sleeve is slidably connected with the pressing block, the pressing block and the plastic pipe are clamped between the spring, one end of the plastic pipe is provided with a plurality of horn-shaped water seepage holes, one end of the plastic pipe is fixed with the sponge plate, the sponge plate and the plastic pipe are slidably connected with the sliding plate, the sliding plate is fixedly connected with the pressing block, the stand column is fixed at the vertical relation at the top end of the pressing block, one end of the stand column, which deviates from the pressing block, is detachably connected with the fixed rod, the rubber sleeve is arranged in the rotating rod, and the inner part of the rubber sleeve is slidably connected with the slide rod, and the slide bar with the dead lever can be dismantled and be connected, the inside of changeing the ball is symmetrical relation sliding connection has two the ejector pin.

The invention has the beneficial effects that:

(1) according to the plastic fiber infiltrating irrigation pipe, the pressing structure is connected to the outer part of the plastic pipe, through the arrangement of the pressing structure, the water seepage rate of the plastic pipe can be changed when enough water seeps, the water seepage amount of the adjusting structure can also be changed, so that the plastic pipe cannot burst due to water pressure when the seepage rate of the plastic pipe is changed by the pressing structure, the pressing structure can also play a role in promoting the filtering of the adjusting structure, the filtering function of the adjusting structure can be achieved, and the water seepage work of the plastic pipe can be kept normally carried out.

(2) According to the plastic fiber infiltrating irrigation pipe, the connecting structure is connected to one end of the plastic pipe, the plastic pipe can be quickly connected with the main water pipe through the arrangement of the connecting structure, the fixing structure is connected to one end, away from the plastic pipe, of the connecting structure, the plastic pipe can be connected with the main water pipe more firmly through the matching use of the fixing structure and the connecting structure, so that the main water pipe is prevented from slipping off the connecting structure, the adjusting structure is rotatably connected to the inside of the connecting pipe, water entering the plastic pipe from the main water pipe can be filtered through the matching use of the adjusting structure and the connecting structure, the internal blockage of the plastic pipe is prevented, the adjusting structure is detachably connected with the connecting structure, and the cleaning of the adjusting structure can be facilitated.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a structural diagram illustrating the overall structure of a preferred embodiment of the plastic fiber infiltrating irrigation pipe of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a schematic view of the connection tube and the adjustment structure shown in FIG. 1;

fig. 4 is a schematic view showing a connection structure of the plastic tube and the pressing structure shown in fig. 1.

In the figure: 1. plastic pipe, 2, pressing structure, 21, fixing sleeve, 22, pressing block, 23, upright post, 24, fixing rod, 25, sliding rod, 26, rubber sleeve, 27, ejector rod, 28, water seepage hole, 29, sponge plate, 29a, sliding plate, 29b, spring, 3, connecting structure, 31, connecting pipe, 32, fixing pipe, 33, thread ring, 34, guide sleeve, 4, fixing structure, 41, connecting rod, 42, first jacket, 43, second jacket, 44, snap ring, 45, locking nut, 5, adjusting structure, 51, fixing sleeve, 52, sealing sleeve, 53, rotating rod, 54, convex ring, 55, rubber plug, 56, rotating ball, 57, water through hole, 58 and filter screen.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1-4, the plastic fiber infiltrating irrigation pipe of the present invention comprises a plastic pipe 1, a pressing structure 2, a connecting structure 3, a fixing structure 4 and an adjusting structure 5, wherein the pressing structure 2 capable of changing the size of seepage is connected to the outside of the plastic pipe 1 for water supply source to pass through; one end of the plastic pipe 1 is connected with the connecting structure 3 for connecting the plastic pipe 1 with a main water pipe, and one end of the connecting structure 3, which is far away from the plastic pipe 1, is connected with the fixing structure 4 for fixing the main water pipe; the interior of the connecting structure 3 is rotatably connected with the adjusting structure 5 for filtering water entering the interior of the plastic pipe 1 from a main water pipe.

Specifically, the fixing structure 4 includes a connecting rod 41, a first clamping sleeve 42, a second clamping sleeve 43, a clamping ring 44 and a locking nut 45, the connecting rod 41 is fixed at one end of the connecting pipe 31 away from the plastic pipe 1, the semi-annular first clamping sleeve 42 is fixed at one end of the connecting rod 41 away from the connecting pipe 31, the second clamping sleeve 43 having the same shape and size as the first clamping sleeve 42 is arranged at one end of the first clamping sleeve 42, a plurality of semi-annular clamping rings 44 are arranged, the plurality of clamping rings 44 are arranged inside the first clamping sleeve 42 and the second clamping sleeve 43 in a mutually parallel relationship, the first clamping sleeve 42 and the second clamping sleeve 43 are detachably connected through the locking nut 45, after the main water pipe is connected with the connecting pipe 31, the second clamping sleeve 43 is fixed on the first clamping sleeve 42 through the locking nut 45, the first jacket 42 and the second jacket 43 are both in a semicircular structure and can fix the inlet and outlet of a main water pipe, so that the main water pipe can be prevented from slipping due to overlarge pressure, the clamping rings 44 are arranged in the first jacket 42 and the second jacket 43, and the clamping force of the first jacket 42 and the second jacket 43 on the main water pipe can be increased through the arrangement of the clamping rings 44, so that a better fixing effect is achieved.

Specific, it includes fixed cover 51, seal cover 52, bull stick 53, protruding ring 54, rubber buffer 55, commentaries on classics ball 56, limbers 57 and filter screen 58 to adjust structure 5, fixed cover 51 is vertical relation weld in the outside of connecting pipe 31, seal cover 52 threaded connection in fixed cover 51 deviates from the one end of connecting pipe 31, just seal cover 52's outside is hexagonal, bull stick 53 rotate connect in seal cover 52, rubber buffer 55 sliding connection in the inside of fixed cover 51, just rubber buffer 55 is fixed in the outside of bull stick 53, protruding ring 54 is equipped with a plurality ofly, and is a plurality of protruding ring 54 is mutual parallel relation and locates fixed cover 51's inside, commentaries on classics ball 56 is fixed in the bottom of bull stick 53, just change ball 56 with connecting pipe 31 rotates and connects, filter screen 58 is equipped with two, two the filter screens 58 are fixed at two ends of the rotary ball 56 in a symmetrical relationship, the water through holes 57 are provided with a plurality of water through holes 57 which are all arranged in the rotary ball 56, the water through holes 57 are in a continuous S-shaped structure, the rotary ball 56 is rotatably connected in the connecting pipe 31, the water through holes 57 in a continuous S-shaped structure are arranged in the rotary ball 56, the impact force of water can be reduced by matching the rotary ball 56 with the water through holes 57, so that the condition that water seepage is too fast can be prevented due to too large water pressure, the flow velocity of water can be reduced by rotating the rotary ball 56, two filter screens 58 are fixed at two ends of the rotary ball 56 in a symmetrical relationship, and water entering the plastic pipe 1 can be filtered by the arrangement of the filter screens 58, so that the water seepage holes 24 can be prevented from being blocked, the outside of bull stick 56 is fixed rubber buffer 55, rubber buffer 55 with fixed cover 51 sliding connection can play sealed effect, prevents the inside water of connecting pipe 31 is followed fixed cover 51 flows out, seal cover 52 with fixed cover 51 threaded connection, bull stick 53 with seal cover 52 rotates to be connected, through seal cover 52 with fixed cover 51's threaded connection can conveniently will change ball 56 and take out and wash.

Specifically, pressing structure 2 includes fixed cover 21, briquetting 22, stand 23, dead lever 24, slide bar 25, rubber sleeve 26, ejector pin 27, infiltration hole 28, sponge board 29, slide 29a and spring 29b, fixed cover 21 is fixed in the outside of plastic tubing 1, the inside sliding connection of fixed cover 21 has briquetting 22 with the centre gripping between the plastic tubing 1 spring 29b, the one end of plastic tubing 1 is equipped with a plurality of loudspeaker forms infiltration hole 28, the one end of plastic tubing 1 is fixed with sponge board 29 with sliding connection has between the plastic tubing 1 slide 29a, just slide 29a with briquetting 22 fixed connection, the top of briquetting 22 is the vertical relation fixed stand 23, stand 23 deviates from the one end of briquetting 22 can be dismantled and be connected with dead lever 24, rubber sleeve 26 locates the inside of bull stick 53, annular the inside sliding connection of rubber sleeve 26 has slide bar 25, just slide bar 25 with the connection can be dismantled to dead lever 24, the inside of commentaries on classics ball 56 is symmetrical relation sliding connection has two ejector pin 27, works as plastic tubing 1 goes out the infiltration enough time, will make the outside sand and soil of plastic tubing 1 becomes inflation and gravity aggravate, and at this moment, expanded sand and soil will press briquetting 22 to the inside of fixed cover 21 slides, briquetting 22 just can drive in the downstream process slide 29a downstream, thereby can make slide 29a shelter from a plurality of infiltration hole 28, just can reduce the infiltration rate of plastic tubing 1 is direct even will be whole infiltration hole 28 blocks up, thereby can reduce the waste at the water source, works as briquetting 22 is when pushing down, can also drive with the connection can be dismantled to stand 23 dead lever 24 pushes down, just can drive slide bar 25 is in the inside gliding of rubber sleeve 26 slide bar 25 gliding in-process not only can collide two ejector pin 27 makes two ejector pin 27 collides two again filter screen 58 makes two filter screen 58 takes place to shake, thereby can avoid filter screen 58 appears blockking up, can also be a plurality of limbers 57 are closed, thereby can change a plurality ofly the break-make of limbers 57, thereby can control the flow and the velocity of flow of the inside water of plastic tubing 1 avoid the water waste.

When the connecting pipe is used, firstly, the plastic pipe 1 and the main water pipe are respectively connected to the fixed pipes 32 at two ends of the connecting pipe 31 through rotation, the two fixed pipes 32 are respectively provided with the thread rings 33 in a thread shape, the connection of the pipes can be facilitated through the arrangement of the thread rings 33, the thread rings 33 are in a step-shaped structure, the connection of the pipes and the connecting pipe 31 can be further facilitated, the sealing effect can be achieved, the guide sleeves 34 in a circular truncated cone-shaped structure are respectively arranged at the opposite ends of the two fixed pipes 32, and the insertion connection between the pipes can be facilitated through the arrangement of the guide sleeves 34; after the main water pipe is connected with the connecting pipe 31, the second jacket 43 is fixed on the first jacket 42 through a locking nut 45, the first jacket 42 and the second jacket 43 are both of a semicircular structure and can be used for fixing the main water pipe in and out, so that the main water pipe can be prevented from slipping due to overlarge pressure, clamping rings 44 are arranged in the first jacket 42 and the second jacket 43, the clamping force of the first jacket 42 and the second jacket 43 on the main water pipe can be increased through the arrangement of the clamping rings 44, and a better fixing effect is achieved; the rotating ball 56 is rotatably connected in the connecting pipe 31, a plurality of water through holes 57 in a continuous S-shaped structure are arranged in the rotating ball 56, the impact force of water can be reduced through the matching of the rotating ball 56 and the water through holes 57, so that the situation that water seepage is too fast due to overlarge water pressure can be prevented, the flow velocity of water can be reduced through the rotation of the rotating ball 56, two filter screens 58 are fixed at two ends of the two rotating balls 56 in a symmetrical relation, water entering the plastic pipe 1 can be filtered through the arrangement of the filter screens 58, so that the water seepage holes 24 can be prevented from being blocked, a rubber plug 55 is fixed outside the rotating rod 56, the rubber plug 55 is slidably connected with the fixing sleeve 51, a sealing effect can be achieved, the water in the connecting pipe 31 is prevented from flowing out of the fixing sleeve 51, the sealing sleeve 52 is in threaded connection with the fixing sleeve 51, the rotating rod 53 is rotatably connected with the sealing sleeve 52 and is in threaded connection with the fixing sleeve 51 through the sealing sleeve 52, the rotating ball 56 can be conveniently taken out for cleaning; when water enters the plastic pipe 1, the water flows out from the water seepage holes 28 on the plastic pipe 1, when the plastic pipe 1 seeps water sufficiently, sand outside the plastic pipe 1 becomes expanded and gravity is aggravated, at the moment, the expanded sand presses the pressing block 22 to slide towards the inside of the fixing sleeve 21, the pressing block 22 can drive the sliding plate 29a to move downwards in the downward movement process, so that the sliding plate 29a can shield the plurality of water seepage holes 28, the water seepage speed of the plastic pipe 1 can be reduced, even all the water seepage holes 28 are directly blocked, the waste of a water source can be reduced, when the pressing block 22 presses downwards, the fixing rod 24 detachably connected with the upright column 23 can be driven to press downwards, the fixing rod 24 presses downwards, the sliding rod 25 can be driven to slide downwards in the rubber sleeve 26, in the sliding process of the sliding rod 25, the two ejector rods 27 can be collided, make two ejector pins 27 collide two filter screens 58 again, make two filter screens 58 take place to shake to can avoid the filter screen 58 to appear blockking up, can also carry out the closure to a plurality of limbers 57, thereby can change the break-make of a plurality of limbers 57, thereby can control the flow and the velocity of flow of the inside water of plastic tubing 1, avoid water waste.

The foregoing illustrates and describes the principles, general features, and advantages of the present 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 embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A plastic fiber infiltrating irrigation pipe is characterized in that: the device comprises a plastic pipe (1), a pressing structure (2), a connecting structure (3), a fixing structure (4) and an adjusting structure (5), wherein the pressing structure (2) capable of changing the size of leakage is connected to the outside of the plastic pipe (1) for a water supply source to pass through; one end of the plastic pipe (1) is connected with the connecting structure (3) for connecting the plastic pipe (1) with a main water pipe, and one end of the connecting structure (3) departing from the plastic pipe (1) is connected with the fixing structure (4) for fixing the main water pipe; the adjusting structure (5) used for filtering water entering the plastic pipe (1) from a main water pipe is rotatably connected inside the connecting structure (3); the connecting structure (3) comprises a connecting pipe (31), a fixed pipe (32), a thread ring (33) and a guide sleeve (34), the connecting pipe (31) with a hollow cylinder structure is arranged at one end of the plastic pipe (1), two fixed pipes (32) are arranged, the two fixed pipes (32) are symmetrically arranged at two ends of the connecting pipe (31) respectively, and the outer diameter of the fixing tube (32) is smaller than that of the connection tube (31), two guide sleeves (34) are arranged, the two guide sleeves (34) are symmetrically fixed at the opposite ends of the two fixed tubes (32), the two guide sleeves (34) are both of a hollow circular truncated cone-shaped structure, the thread ring (33) is distributed on the outer portion of the fixed pipe (32) in a threaded manner, and the thread ring (33) is of a stepped structure; the fixing structure (4) comprises a connecting rod (41), a first clamping sleeve (42), a second clamping sleeve (43), clamping rings (44) and a locking nut (45), the connecting rod (41) is fixed at one end, away from the plastic pipe (1), of the connecting pipe (31), the semi-annular first clamping sleeve (42) is fixed at one end, away from the connecting pipe (31), of the connecting rod (41), the second clamping sleeve (43) which is identical to the first clamping sleeve (42) in shape and size is arranged at one end of the first clamping sleeve (42), the semi-annular clamping rings (44) are provided in a plurality, the clamping rings (44) are arranged inside the first clamping sleeve (42) and the second clamping sleeve (43) in a mutually parallel relation, and the first clamping sleeve (42) and the second clamping sleeve (43) are detachably connected through the locking nut (45); adjust structure (5) including fixed cover one (51), seal cover (52), bull stick (53), protruding ring (54), rubber buffer (55), commentaries on classics ball (56), limbers (57) and filter screen (58), fixed cover one (51) be vertical relation weld in the outside of connecting pipe (31), seal cover (52) threaded connection in fixed cover one (51) deviates from the one end of connecting pipe (31), just the outside of seal cover (52) is the hexagonal form, bull stick (53) rotate connect in seal cover (52), rubber buffer (55) sliding connection in the inside of fixed cover one (51), just rubber buffer (55) are fixed in the outside of bull stick (53), protruding ring (54) are equipped with a plurality ofly, and are a plurality of protruding ring (54) are parallel relation of each other and locate the inside of fixed cover one (51), the rotary ball (56) is fixed at the bottom end of the rotary rod (53), the rotary ball (56) is rotatably connected with the connecting pipe (31), two filter screens (58) are arranged, the two filter screens (58) are fixed at two ends of the rotary ball (56) in a symmetrical relation, a plurality of water through holes (57) are formed, the plurality of water through holes (57) are all arranged in the rotary ball (56), and the plurality of water through holes (57) are of a continuous S-shaped structure; press structure (2) including fixed cover two (21), briquetting (22), stand (23), dead lever (24), slide bar (25), rubber sleeve (26), ejector pin (27), infiltration hole (28), sponge board (29), slide (29 a) and spring (29 b), fixed cover two (21) are fixed in the outside of plastic tubing (1), the inside sliding connection of fixed cover two (21) has briquetting (22) with the centre gripping between plastic tubing (1) spring (29 b), the one end of plastic tubing (1) is equipped with a plurality of loudspeaker forms infiltration hole (28), the one end of plastic tubing (1) is fixed with sponge board (29) with sliding connection has between plastic tubing (1) slide (29 a), just slide (29 a) with briquetting (22) fixed connection, the top of briquetting (22) is that the vertical relation is fixed stand (23), stand (23) deviates from the one end of briquetting (22) can be dismantled and be connected with dead lever (24), rubber sleeve (26) are located the inside of bull stick (53), annular the inside sliding connection of rubber sleeve (26) has slide bar (25), just slide bar (25) with dead lever (24) can be dismantled and be connected, the inside of commentaries on classics ball (56) is symmetrical relation sliding connection and has two ejector pin (27).