Slotting equipment for water and electricity installation

Abstract

The invention discloses slotting equipment for water and electricity installation, and belongs to the field of decoration construction slotting. The grooving equipment for water and electricity installation comprises a machine body with a cutting blade, a protective shell is fixedly connected to the machine body, the cutting blade is sleeved with the protective shell, the grooving equipment comprises an auxiliary shell, and the auxiliary shell is arranged at the tail end of the protective shell in a lifting mode; the rotating shaft is rotationally connected to the auxiliary shell; the supporting ash scraping disc is fixedly connected to the rotating shaft; the plurality of ash scraping shovel boxes are fixedly connected to the peripheral side of the supporting ash scraping disc, during grooving, the cutting blade performs preliminary grooving, the cutting blade performs grooving advancing, the auxiliary shell descends to drive the supporting ash scraping disc and the ash scraping shovel boxes to be inserted into a groove, in the cutting advancing process of the cutting blade, the supporting ash scraping disc drives the ash scraping shovel boxes to rotate, and the ash scraping shovel boxes are driven by the auxiliary shell to rotate. And the ash scraping shovel box is used for scraping away the plaster in the groove.

Description

Technical Field

[0001] The present invention relates to the technical field of grooving in decoration construction, and particularly to a grooving device for water and electricity installation. Background Art

[0002] Water and electricity installation is an essential part of house decoration. When carrying out water and electricity installation, it is usually the case that in a roughcast house, the water and circuit layouts are carried out first, and finally, painting, tiling, etc. are done. When carrying out water and electricity installation in a house, it is necessary to pre-groove the wall structures such as the concrete structure and foam bricks of the roughcast house to ensure the subsequent laying and installation of water pipes and wire pipes.

[0003] Currently, for indoor grooving construction methods, most are to use existing cutting machines to cut, cut out thin grooves, then divide the grooving expansion area, and then use a pneumatic hammer to knock out the concrete and other walls in the grooving expansion area that has been cut and divided, and then complete the grooving to ensure that water pipes and wire pipes can be placed.

[0004] Currently, when using a cutting machine to cut grooves, for indoor grooving, generally handheld cutting and grooving are used. Currently, in order to avoid a large amount of dust generated during grooving, generally, the cutting machine is equipped with a water pipe for dust reduction. However, there are certain problems. For some lines, a very long groove needs to be opened. When advancing and cutting the groove, plaster will enter the previously cut thin groove at the back. When using a pneumatic hammer to expand the groove for the second time, the plaster here will splash, causing a large amount of dust, which is not convenient for construction and also has an impact on the environment. In addition, when cutting a long groove, due to handheld cutting, it is inevitable that the hand will be unstable. When the cutting blade cuts, the cutting machine will float up and down, which may cause the cutting blade to tilt up and down in the groove during grooving. When encountering a very hard wall or steel bars, the cutting blade will be directly squeezed and folded, causing certain damage to the cutting blade and affecting its service life. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems in the prior art that there is residual plaster in the cutting groove, a large amount of dust is generated when expanding the groove with a pneumatic hammer, and during the process of advancing before cutting a long groove with the cutting blade, the hand-held instability may cause the cutting groove to fold and press the cutting blade, and to propose a grooving device for water and electricity installation.

[0006] In order to achieve the above purpose, the present invention adopts the following technical scheme:

[0007] A grooving device for water and electricity installation, including a machine body with a cutting blade, a protective shell is fixedly connected to the machine body, the protective shell is sleeved on the cutting blade, and includes

[0008] a secondary shell, which is arranged at the tail end of the protective shell in a lifting manner;

[0009] a rotating shaft, which is rotatably connected to the secondary shell;

[0010] A support scraper plate is fixedly connected to the rotating shaft;

[0011] A plurality of scraper boxes are fixedly connected to the outer peripheral side of the supporting scraper plate.

[0012] in

[0013] When grooving, the cutting blade makes a preliminary groove, and the cutting blade moves forward while grooving. The auxiliary housing descends to drive the supporting scraper plate and the scraper box to be inserted into the groove. During the cutting process of the cutting blade, the supporting scraper plate drives the scraper box to rotate, and the scraper box scrapes away the plaster in the groove.

[0014] Buffer plates are arranged on both sides of the supporting scraper plate, the buffer plate sliding seal is arranged on the rotating shaft, a buffer spring is connected between the buffer plate and the supporting scraper plate, and a sealing rubber elastic sleeve is connected between the outer peripheral side of the buffer plate and the outer peripheral side of the supporting scraper plate; in the specific implementation, the diameter of the supporting scraper plate is larger than the diameter of the buffer plate, so as to facilitate the insertion of the buffer plate;

[0015] When cutting the long groove, the cutting blade moves forward and cuts, and the supporting scraper plate and the buffer plates on both sides are inserted into the opened groove.

[0016] In order to achieve stable lifting of the auxiliary shell, preferably, a limiting slider is fixedly connected to the auxiliary shell, and a limiting sliding groove matching the limiting slider is provided on the protective shell.

[0017] In order to drive the auxiliary shell to be raised and lowered, further, an electric telescopic rod is rotatably connected to the protective shell, and the telescopic end of the electric telescopic rod is rotatably connected to the auxiliary shell.

[0018] In order to realize the rotation of the rotating shaft, further, a rolling disk is rotatably connected to the rotating shaft, and the rolling disk is rotatably connected to the sub-housing. The rolling disk is meshed with the rotating shaft through a gear set. When in use, the supporting scraper disk is inserted into the slot, and the outer end of the rolling disk is attached to the wall. When the slot is advanced, the rolling disk rotates, and the rotating shaft is driven to rotate faster through the gear set, so that the supporting scraper disk rotates faster, and multiple scraper boxes scrape away excess plaster in the slot.

[0019] In order to achieve a rotation speed of the rotating shaft that is faster than the rotation speed of the rolling disk, the gear set further protects the first gear and the second gear that are rotatably connected to the auxiliary housing, the first gear and the second gear are meshed, the rotating shaft is fixed with a gear sleeve that meshes with the second gear, and the inner side of the rolling disk is fixed with gear teeth that mesh with the first gear.

[0020] In order to catch the scraped plaster, preferably, an ash receiving box is fixedly connected to the sub-shell, an ash discharging plate is rotatably connected to the bottom of the ash scraping shovel box, a first magnet is fixedly connected to the bottom side of the ash discharging plate, a telescopic cylinder is rotatably connected to the ash receiving box, the telescopic cylinder is connected to a telescopic rod through a telescopic spring, a second magnet attracted to the first magnet is rotatably connected to the telescopic rod, and a first reset spring is connected between the ash discharging plate and the ash scraping shovel box.

[0021] In order to facilitate the discharge of sticky plaster in the plaster scraper box, further, an air storage cylinder is fixedly connected to the side wall of the plaster scraper box, and an air blowing pipe is connected to the air storage cylinder, and the air blowing pipe penetrates into the plaster scraper box.

[0022] In order to realize the opening and closing of the air blowing pipe, further, a sealing plate is fixedly connected to the ash outlet plate, when the ash outlet plate is closed, the sealing plate blocks the air blowing pipe, when the ash outlet plate is opened, the sealing plate is away from the air blowing pipe.

[0023] In order to replenish air to the air cylinder, an air storage cavity is further formed between the supporting scraper plate and the buffer plate, and an air inlet pipe with a one-way air inlet valve is provided on the rotating shaft, one end of the air inlet pipe is connected to the air storage cavity, and the other end is connected to the outside air; the air cylinder is connected to the air storage cavity through an air outlet pipe with a one-way air outlet valve.

[0024] Compared with the prior art, the present invention provides a grooving device for hydropower installation, which has the following beneficial effects:

[0025] 1. The grooving equipment for water and electricity installation uses a cutting disc to make grooves. The auxiliary shell descends to drive the support scraper disc and the scraper shovel box to be inserted into the groove. During the cutting process of the cutting disc, the support scraper disc drives the scraper box to rotate. The scraper box scrapes away the plaster in the groove, effectively avoiding the dust raised when the subsequent electric hammer expands the groove, ensuring the air environment, and at the same time, the support scraper disc and the buffer plates on both sides are inserted into the opened groove. During the hand-held process, if the machine body tilts and the cutting disc tilts, the buffer plate will firstly resist the inner wall of the groove, which has a certain buffering effect on the entire machine body; when the cutting disc tilts, there is a buffering effect, which effectively avoids the direct rigid tilt of the cutting disc and the collision with the wall, and can play a certain protective role. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is one of the structural schematic diagrams of the present invention;

[0027] Figure 2 This is the second schematic diagram of the structure of the present invention;

[0028] Figure 3 It is a structural schematic diagram of the secondary shell of the present invention;

[0029] Figure 4 Schematic cross-sectional structure diagram of the secondary housing of the present invention;

[0030] Figure 5 is Figure 4 Schematic structure diagram of the structure at position A in

[0031] Figure 6 Schematic structure diagram of the support ash scraping tray and buffer plate of the present invention;

[0032] Figure 7 Schematic structure diagram of the ash scraping shovel box of the present invention;

[0033] Figure 8 Schematic structure diagram of the ash discharge plate of the ash scraping shovel box of the present invention when unfolded;

[0034] Figure 9 Schematic structure diagram of the rolling disc and gear set of the present invention.

[0035] In the figure: 1, body; 101, hand-held frame; 2, cutting piece; 3, protective shell; 301, water inlet joint; 302, limit sliding groove; 303, abutting plate; 304, dust baffle; 4, electric telescopic rod; 5, secondary housing; 501, limit slider; 6, rotating shaft; 601, gear sleeve; 7, rolling disc; 701, first gear; 702, second gear; 8, support ash scraping tray; 9, buffer plate; 10, sealing rubber elastic sleeve; 11, ash scraping shovel box; 12, air storage cavity; 13, buffer spring; 14, air inlet hood; 15, air inlet pipe; 16, ash receiving box; 17, air storage cylinder; 171, air blowing pipe; 172, sealing plate; 18, air outlet pipe; 19, ash discharge plate; 20, first magnet; 21, second magnet; 22, telescopic cylinder; 23, telescopic rod; 24, second reset tension spring; 25, telescopic spring; 26, first reset tension spring. Specific embodiments

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0037] Referring to Figure 1-2 , a grooving device for hydropower installation, including a body 1 with a cutting piece 2, and a protective shell 3 is fixedly connected to the body 1, and the protective shell 3 is sleeved on the cutting piece 2.

[0038] Referring to Figure 1, during specific implementation, a spray head is connected to the protective shell 3. The spraying end of the spray head is located inside the protective shell 3 and faces the cutting blade 2. The water inlet end of the spray head is connected with a water inlet joint 301, and the water inlet joint 301 is used for externally connecting a water pipe to supply water to the spray head. When cutting and grooving, water is sprayed through the spray head. On the one hand, it can cool the cutting blade 2, and on the other hand, it can effectively reduce dust.

[0039] Refer to Figure 1 , in addition, during the actual production process, a hand-held frame 101 is installed on the machine body 1. During specific implementation, a cutting motor start control button and a control button for the electric telescopic rod 4 can be installed on the hand-held frame 101, which are used to control the start of the cutting motor to drive the cutting blade 2 to rotate for cutting, to control the extension and contraction of the electric telescopic rod 4, and to control the auxiliary shell 5 to drive the support ash scraping plate 8 to insert into the already cut groove; a resisting plate 303 is fixedly connected to the protective shell 3. When cutting, the resisting plate 303 is used to resist against the wall surface for more convenient cutting;

[0040] Refer to Figure 2 , a dust blocking plate 304 is fixedly connected to the tail of the protective shell 3, which is used to block the cement ash thrown to the back during cutting;

[0041] Refer to Figure 2 and Figure 3 , including an auxiliary shell 5, which is arranged at the tail end of the protective shell 3 in a lifting manner; a limiting slider 501 is fixedly connected to the auxiliary shell 5, and a limiting sliding groove 302 matching the limiting slider 501 is opened on the protective shell 3. The limiting slider 501 and the limiting sliding groove 302 can realize the stable lifting of the auxiliary shell 5 on the protective shell 3; a rotating shaft 6 is rotatably connected to the auxiliary shell 5; a support ash scraping plate 8 is fixedly connected to the rotating shaft 6; a plurality of ash scraping shovel boxes 11 are fixedly connected to the outer peripheral side of the support ash scraping plate 8. An electric telescopic rod 4 is rotatably connected to the protective shell 3, and the telescopic end of the electric telescopic rod 4 is rotatably connected to the auxiliary shell 5. By controlling the extension and contraction of the electric telescopic rod 4, the auxiliary shell 5 can be lifted. When cutting a long groove, after the cutting blade 2 initially cuts into a cutting groove, then the electric telescopic rod 4 is driven to make the auxiliary shell 5 stick to the wall surface, and at the same time, the support ash scraping plate 8 and the ash scraping shovel boxes 11 are inserted into the cutting groove.

[0042] Refer to Figure 4 、 Figure 6 and Figure 9, when grooving, the cutting disc 2 makes a preliminary groove, and the cutting disc 2 advances for grooving. The auxiliary housing 5 descends to drive the support plaster scraping disc 8 and the plaster scraping shovel box 11 to insert into the groove. During the cutting and advancing process of the cutting disc 2, the support plaster scraping disc 8 drives the plaster scraping shovel box 11 to rotate, and the plaster scraping shovel box 11 scrapes away the plaster in the groove; specifically: a rolling disc 7 is rotatably connected to the rotating shaft 6, the rolling disc 7 is rotatably connected to the auxiliary housing 5, and the rolling disc 7 is meshed with the rotating shaft 6 through a gear set. When in use, the support plaster scraping disc 8 is inserted into the groove, and the outer end of the rolling disc 7 is attached to the wall surface. When advancing the groove, the rolling disc 7 rotates, and drives the rotating shaft 6 to rotate at an accelerated speed through the gear set, so that the support plaster scraping disc 8 rotates at an accelerated speed, and multiple plaster scraping shovel boxes 11 scrape away the excess plaster in the groove; thus, the plaster in the cutting groove is scraped out, avoiding too much plaster remaining in the cutting groove, and at the same time effectively avoiding the dust raised during the subsequent electric hammer groove widening, ensuring the air environment.

[0043] Refer to Figure 9 : The gear set protects the first gear 701 and the second gear 702 rotatably connected to the auxiliary housing 5. The first gear 701 and the second gear 702 are meshed. A gear sleeve 601 meshed with the second gear 702 is fixedly sleeved on the rotating shaft 6, and teeth meshed with the first gear 701 are fixedly arranged on the inner side of the rolling disc 7; by pressing the rolling disc 7 against the wall surface, during the process of the cutting disc 2 and the protective housing 3 advancing to cut the groove, the rolling disc 7 will roll. At this time, the rolling disc 7 drives the rotating shaft 6 to rotate rapidly through the gear set. The diameter of the rotating shaft 6 is smaller than the diameter of the rolling disc 7 with teeth on the inner side, so that it can be realized that the speed at which the rotating shaft 6 drives the plaster scraping shovel box 11 to rotate is greater than the speed at which the rolling disc 7 advances and rolls, and the plaster is scraped out of the cutting groove.

[0044] It should be noted here that in this implementation method, the opening direction of the plaster scraping shovel box 11 needs to be opposite to the cutting and advancing direction of the cutting disc 2 to realize plaster shoveling. When specifically implementing, the gear set can also be set in a way that the rotating direction of the rotating shaft 6 is opposite to that of the rolling disc 7. In this way, the opening direction of the plaster scraping shovel box 11 needs to be the same as the cutting and advancing direction of the cutting disc 2 to realize plaster shoveling.

[0045] Refer to Figure 4-Figure 5 , buffer plates 9 are arranged on both sides of the support plaster scraping disc 8. The buffer plates 9 are slidably and sealingly arranged on the rotating shaft 6. A buffer spring 13 is connected between the buffer plates 9 and the support plaster scraping disc 8, and a sealing rubber elastic sleeve 10 is connected between the outer peripheral sides of the buffer plates 9 and the support plaster scraping disc 8;

[0046] Refer to Figure 5 , when specifically implementing, the diameter of the support plaster scraping disc 8 is larger than the diameter of the buffer plate 9 to facilitate the insertion of the buffer plate 9.

[0047] Refer to Figure 2 , Figure 3 andFigure 4 When cutting the long groove, during the process of the cutting disc 2 advancing for cutting, the supporting ash scraping disc 8 and the buffer plates 9 on both sides are inserted into the opened groove. During the process of holding and advancing, if the body 1 tilts and the cutting disc 2 tilts, first, the buffer plate 9 will abut against the inner wall of the groove, playing a certain buffering effect on the whole body 1. When the cutting disc 2 tilts, there is a buffering effect, effectively avoiding the direct rigid tilt and collision of the cutting disc 2 with the wall surface at this time, which can play a certain protective role for the cutting disc 2 and can extend the service life of the cutting disc 2.

[0048] Refer to Figure 6-Figure 8 As shown, a dust collection box 16 is fixedly connected to the secondary housing 5. The bottom of the ash scraping shovel box 11 is rotatably connected to an ash discharging plate 19. A first magnet 20 is fixedly connected to the bottom side of the ash discharging plate 19. A telescopic cylinder 22 is rotatably connected in the dust collection box 16. The telescopic cylinder 22 is connected to a telescopic rod 23 through a telescopic spring 25. A second magnet 21 that attracts the first magnet 20 is rotatably connected to the telescopic rod 23. A first reset tension spring 26 is connected between the ash discharging plate 19 and the ash scraping shovel box 11 being sued; as the supporting ash scraping disc 8 drives the ash scraping shovel box 11 to rotate, when the ash scraping shovel box 11 moves to the dust collection box 16, at this time the first magnet 20 and the second magnet 21 attract each other. As the ash scraping shovel box 11 continues to move, reaching the tensile limit of the telescopic spring 25 between the telescopic cylinder 22 and the telescopic rod 23 and the first reset tension spring 26, the ash discharging plate 19 rotates and opens, thus pouring the scraped plaster into the dust collection box 16. A cleaning plug door is inserted at the lower end of the dust collection box 16 for cleaning after the dust collection box 16 is full.

[0049] Refer to Figure 6-Figure 8 As shown, a second reset tension spring 24 is connected between the dust collection box 16 and the telescopic cylinder 22, facilitating the reset of the telescopic cylinder 22.

[0050] Refer to Figure 4 and Figure 5 In some other embodiments, further, an air storage cylinder 17 is fixedly connected to the side wall of the ash scraping shovel box 11. An air blowing pipe 171 is connected to the air storage cylinder 17. The air blowing pipe 171 extends into the ash scraping shovel box 11. Since water is sprayed on the cutting disc 2 during cutting and grooving, the plaster in the cutting groove may be sticky at this time, and the air blowing pipe 171 can be used to more effectively blow the sticky plaster into the dust collection box 16.

[0051] Refer to Figure 8 As shown, a blocking plate 172 is fixedly connected to the ash discharging plate 19. When the ash discharging plate 19 is in the closed state, the blocking plate 172 blocks the air blowing pipe 171. When the ash discharging plate 19 is opened, the blocking plate 172 is away from the air blowing pipe 171. When the ash discharging plate 19 is opened, the air blowing pipe 171 blows air, facilitating the blowing of the plaster.

[0052] Refer to Figure 4and Figure 5 , an air storage cavity 12 is formed between the supporting plastering plate 8 and the buffer plate 9. An air inlet pipe 15 with a one-way air inlet valve is provided on the rotating shaft 6. One end of the air inlet pipe 15 is communicated with the air storage cavity 12, and the other end is communicated with the outside air. During specific implementation, an air inlet hood 14 for filtering dust is provided at the end of the air inlet pipe 15 communicating with the outside air. The air storage cylinder 17 is communicated with the air storage cavity 12 through an air outlet pipe 18 with a one-way air outlet valve. It is possible to perform air extraction and exhaust during the process of the supporting plastering plate 8 advancing in the cutting groove of the buffer plate 9 and when the buffer plate 9 expands and contracts for buffering, so as to store air in the air storage cylinder 17, store air while using the buffer plate 9 for buffering, and facilitate the discharge of plaster with the stored gas.

[0053] The above is only the preferred specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A grooving device for hydropower installation, comprising a body (1) with a cutting blade (2), a protective shell (3) fixedly connected to the body (1), the protective shell (3) being sleeved on the cutting blade (2), characterized in that: include A secondary shell (5) is lifted and disposed at the rear end of the protective shell (3); A rotating shaft (6) rotatably connected to the auxiliary housing (5); A supporting scraper plate (8) is fixedly connected to the rotating shaft (6); A plurality of scraper boxes (11) are fixedly connected to the outer peripheral side of the supporting scraper plate (8), wherein When grooving, the cutting blade (2) performs preliminary grooving, the cutting blade (2) moves forward while grooving, the auxiliary housing (5) descends to drive the supporting scraper plate (8) and the scraper box (11) to be inserted into the groove, and during the cutting process of the cutting blade (2), the supporting scraper plate (8) drives the scraper box (11) to rotate, and the scraper box (11) scrapes away the plaster in the groove; Buffer plates (9) are provided on both sides of the supporting scraper plate (8); the buffer plates (9) are slidingly sealed on the rotating shaft (6); a buffer spring (13) is connected between the buffer plate (9) and the supporting scraper plate (8); and a sealing rubber elastic sleeve (10) is connected between the outer peripheral side of the buffer plate (9) and the outer peripheral side of the supporting scraper plate (8). When cutting the long groove, the cutting blade (2) moves forward for cutting, and the supporting scraper plate (8) and the buffer plates (9) on both sides are inserted into the opened groove.

2. The grooving equipment for hydropower installation according to claim 1, characterized in that: The auxiliary shell (5) is fixedly connected to a limiting slide block (501), and the protective shell (3) is provided with a limiting slide groove (302) matching the limiting slide block (501).

3. The grooving equipment for hydropower installation according to claim 2, characterized in that: The protective shell (3) is rotatably connected to an electric telescopic rod (4), and the telescopic end of the electric telescopic rod (4) is rotatably connected to the auxiliary shell (5).

4. The grooving equipment for hydropower installation according to claim 3, characterized in that: A rolling plate (7) is rotatably connected to the rotating shaft (6), and the rolling plate (7) is rotatably connected to the auxiliary housing (5). The rolling plate (7) is meshed with the rotating shaft (6) via a gear set.

5. The grooving equipment for hydropower installation according to claim 4, characterized in that: The gear set protects a first gear (701) and a second gear (702) which are rotatably connected to the auxiliary housing (5); the first gear (701) and the second gear (702) are meshed; a gear sleeve (601) meshed with the second gear (702) is fixedly sleeved on the rotating shaft (6); and gear teeth meshed with the first gear (701) are fixedly disposed on the inner side of the rolling plate (7).

6. The grooving equipment for hydropower installation according to claim 1, characterized in that: The auxiliary shell (5) is fixedly connected to an ash receiving box (16); the bottom of the ash scraping shovel box (11) is rotatably connected to an ash discharging plate (19); the bottom side of the ash discharging plate (19) is fixedly connected to a first magnet (20); a telescopic cylinder (22) is rotatably connected to the ash receiving box (16); the telescopic cylinder (22) is connected to a telescopic rod (23) via a telescopic spring (25); a second magnet (21) attracted to the first magnet (20) is rotatably connected to the telescopic rod (23); a first reset spring (26) is connected between the ash discharging plate (19) and the ash scraping shovel box (11).

7. The grooving equipment for hydropower installation according to claim 6, characterized in that: An air cylinder (17) is fixedly connected to the side wall of the scraper box (11), and an air blowing pipe (171) is connected to the air cylinder (17), and the air blowing pipe (171) penetrates into the scraper box (11).

8. The grooving equipment for hydropower installation according to claim 7, characterized in that: A blocking plate (172) is fixedly connected to the ash outlet plate (19); when the ash outlet plate (19) is in a closed state, the blocking plate (172) blocks the air blowing pipe (171); when the ash outlet plate (19) is opened, the blocking plate (172) is away from the air blowing pipe (171).

9. The grooving equipment for hydropower installation according to claim 7, characterized in that: An air storage chamber (12) is formed between the supporting scraper plate (8) and the buffer plate (9); an air intake pipe (15) with a one-way air intake valve is provided on the rotating shaft (6); one end of the air intake pipe (15) is connected to the air storage chamber (12), and the other end is connected to the outside air; the air storage cylinder (17) is connected to the air storage chamber (12) via an air outlet pipe (18) with a one-way air outlet valve.

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