CN110375070B

CN110375070B - Environment-friendly adhesive sealing strip

Info

Publication number: CN110375070B
Application number: CN201910657156.XA
Authority: CN
Inventors: 许良云; 方端霞; 李建
Original assignee: Suzhou Lvcuizhu Information Technology Co ltd
Current assignee: Shaanxi Chixu Huiteng Precision Technology Co.,Ltd.
Priority date: 2019-07-19
Filing date: 2019-07-19
Publication date: 2021-10-29
Anticipated expiration: 2039-07-19
Also published as: CN110375070A

Abstract

The invention belongs to the technical field of sealing accessories, and particularly relates to an environment-friendly sealing rubber strip; comprises a main body and a fixing groove; the upper end and the lower end of the main body are oppositely provided with two fixing grooves, the middle part of the main body is provided with storage grooves at equal intervals, and the two sides of the main body are symmetrically provided with metal elastic sheets; through grooves communicated with each other are arranged between the two fixing grooves at intervals; sliding rods are connected in the through grooves in a sliding manner; two ends of the sliding rod are symmetrically and fixedly connected with two elastic fixed blocks; one sides of the two fixed blocks, which are close to the bottom of the fixed groove, are both arranged in an arc shape and matched with the bottom of the fixed groove; the storage tanks are all connected with water absorption balls in a sliding manner; the water absorption ball can absorb water mist and expand; according to the invention, the water absorption ball arranged inside the automobile door and the lithium oxide powder are reacted slowly to release heat to realize a better sealing effect, the sealing property of the door and the window is enhanced, and the work shadow of poor sealing property on personnel in the automobile is reduced.

Description

Environment-friendly adhesive sealing strip

Technical Field

The invention belongs to the technical field of sealing accessories, and particularly relates to an environment-friendly sealing rubber strip.

Background

The rubber materials of the automobile sealing strip comprise three types, namely dense rubber, sponge rubber and hard rubber. The hardness of the hard rubber can reach Shore A95. The rubber material of the sealing strip is more aging-resistant, low-temperature-resistant, moisture-resistant and chemical-corrosion-resistant Ethylene Propylene Diene Monomer (EPDM) which is particularly ozone aging-resistant. EPDM can compound with steel band, steel wire braid over braid, TPE, cotton flannel, flocking, PU coating, organosilicon coating etc. guarantees that the automobile is indoor with external and self waterproof, dustproof, give sound insulation, thermal-insulated, damping, abrasionproof and decorative effect. Typically EPDM weatherstrips are stable for over a decade. Chloroprene Rubber (CR) with good ozone resistance and good ageing resistance can also be selected. In view of the processing properties of conventional rubber compounds, it is sometimes necessary to use a combination of rubbers, such as Natural Rubber (NR) and CR and styrene-butadiene rubber (SBR), or a combination of Polyethylene (PE), EPDM and NR rubber to improve ozone resistance. With the continuous development and maturity of thermoplastic elastomer (TPE) technology, the application field is continuously expanded. In the raw material for manufacturing the sealing strip, ethylene propylene diene monomer, which is a main raw material used in the past, is continuously updated and developed. The novel EPDM with excellent physical properties and good processability can control long chain branching in molecules, so that the vulcanization performance is better, and the extrusion speed and the yield of products can be improved. New thermoplastic elastomers such as TPO and TPV are also increasingly used in automotive weatherstrips. These materials have both the excellent engineering properties of elastomers and the excellent properties of plastics, are both convenient to process and recyclable, and are gradually replacing EPDM articles.

In the actual use process, doors and windows of the vehicle are sealed through sealing rubber strips, but a carrying vehicle which usually enters the refrigeration house suddenly moves to and from the refrigeration house under the environment with higher outdoor temperature, so that a large amount of water mist is adhered to the doors and the windows and drops into water drops, and the sealing rubber strips generate certain thermal expansion and cold contraction due to large temperature difference, so that a part of the water drops slowly flow into fixing grooves of the sealing rubber strips, the water drops are remained at the bottom and are difficult to remove, and if the vehicle enters again, the water drops remained at the bottom can be directly condensed into ice under the low-temperature environment, so that the glass installed in the fixing grooves is extruded, meanwhile, the sealing performance of the doors and the windows is poor, and the work of personnel in the vehicle is greatly influenced; accordingly, the invention provides an environment-friendly sealing rubber strip.

Disclosure of Invention

In order to make up the defects of the prior art and the prior art, the invention provides the environment-friendly sealing rubber strip which realizes a better sealing effect through the slow reaction and heat release matching of the water absorption ball and the lithium oxide powder arranged in the sealing rubber strip.

The technical scheme adopted by the invention for solving the technical problems is as follows: an environment-friendly sealing rubber strip comprises a main body and a fixing groove; the upper end and the lower end of the main body are oppositely provided with two fixing grooves, the middle part of the main body is provided with storage grooves at equal intervals, and the two sides of the main body are symmetrically provided with metal elastic sheets; through grooves communicated with each other are arranged between the two fixing grooves at intervals; sliding rods are connected in the through grooves in a sliding manner; two ends of the sliding rod are symmetrically and fixedly connected with two elastic fixed blocks; one sides of the two fixed blocks, which are close to the bottom of the fixed groove, are both arranged in an arc shape and matched with the bottom of the fixed groove; the storage tanks are all connected with water absorption balls in a sliding manner; the water absorption ball can absorb water mist and expand. When the automobile cold storage device works, doors and windows of the automobile are sealed through the sealing rubber strips in the actual use process, but a carrying automobile which usually enters the cold storage suddenly moves to and from the cold storage under the environment with higher outdoor temperature, so that a large amount of water mist is attached to the doors and the windows and drops into water drops, and the sealing rubber strips generate certain thermal expansion and cold contraction due to large temperature difference, so that part of the water drops slowly flow into the fixing grooves of the sealing rubber strips, the water drops are remained at the bottom and are difficult to remove, if the automobile enters again, the water drops remained at the bottom can be directly condensed into ice under the low-temperature environment, so that the glass installed in the fixing grooves is extruded, meanwhile, the sealing performance of the doors and the windows is poor, and the work of personnel in the automobile is greatly influenced; according to the invention, through the through grooves arranged between the fixed grooves, one of the fixed grooves is firstly clamped on the fixed edge in the installation process, so that the fixed block in the fixed groove is extruded, the fixed block is tightly extruded at the bottom of the fixed groove, the slide rod is pushed to move upwards, the slide rod drives the fixed block at the other end to be separated from the bottom of the fixed groove to generate a certain gap, when water drops fall into the bottom of the groove, the water drops slowly enter the storage groove in the middle part through the gap and are absorbed by the water absorption balls arranged in the storage groove, and the optimal manufacturing material of the water absorption balls is water absorption resin; the ball that absorbs water can take place the volume expansion after absorbing moisture this moment to put down protruding deformation along the hold up tank gradually, thereby make the fixed slot both sides slightly warp inseparabler and paste tightly on glass, strengthened the leakproofness of door and window, reduced the poor work influence to personnel in the car of leakproofness.

Preferably, the two sides of the storage tank are symmetrically arranged in a herringbone manner, lithium oxide powder is filled in one end of the storage tank far away from the water absorption ball, and a baffle is arranged at one end of the storage tank close to the lithium oxide powder; both ends of the baffle are inserted into two side walls of the storage tank, and the baffle is elastically arranged; cavities are formed in the upper side and the lower side of the water absorption ball; the cavities are all arranged in an elliptical shape, one end of each cavity is communicated with the end part of the storage tank through an arc-shaped channel, and the other end of each cavity is communicated with the position of the water absorption ball through an air hole; volume expansion after the ball absorbs certain moisture absorbs, thereby extrude the inside gas of holding vessel, make the inside gas compression of holding vessel, under compressed gas's promotion, the baffle that elasticity set up can take place to warp, thereby the arc passageway of the lithium oxide powder of promotion tip one side drops partly, the lithium oxide powder that subsequently drops can fall into in the cavity, react with the steam that overflows afterwards, slowly release heat, thereby make the gaseous pressure increase in the whole cavity, thereby the both ends that promote the fixed slot are closely laminated on glass along with exothermic degree gradually, further strengthen the leakproofness of door and window, the while also can make the inside moisture of ball that absorbs water reacted, the life of the ball that absorbs water is prolonged.

Preferably, the upper end and the lower end of the absorption ball are fixedly connected with sliding columns; an annular groove is formed in the outer surface of the lower part of the sliding column; the sliding column can slide up and down in the air hole under the pushing of the water absorption ball; according to the invention, the water absorption ball is raised after water absorption and expansion, so that the sliding column is jacked up to move upwards, when the sliding column moves to a certain position, the annular groove below the sliding column is communicated with the cavity, so that the water absorption ball can be directly extruded with lithium oxide powder in the cavity, and reaction heat release is generated, on one hand, the reaction quantity of the lithium oxide powder is controlled by the up-and-down movement of the sliding column, and the service life of the lithium oxide powder is prolonged; on the other hand can thoroughly react inside steam before the traveller opens, strengthen exothermic time to make joint strip receive more sufficient of thermal energy, further improve holistic leakproofness, reduce staff's influence in the car.

Preferably, the baffle is arc-shaped, one side of the bulge of the baffle is close to the water absorption ball, and a group of conical holes are uniformly distributed on the arc-shaped baffle; when the water absorption ball absorbs water and expands to compress the gas in the storage tank, the compression amplitude of the baffle is small, and after the lithium oxide powder is consumed for a period of time, the lithium oxide powder can not be pushed out and can not be continuously reacted to release heat, so that the overall sealing performance of the sealing rubber strip is affected; by arranging the baffle plate into an arc shape and arranging the tapered holes on the baffle plate, on one hand, when the baffle plate is extruded, lithium oxide powder in the baffle plate can be extruded out, so that the reaction is continuous, and the integral sealing property is enhanced; on the other hand, the baffle is easier to be extruded and deformed, the stable pushing-out of the lithium oxide powder is ensured, and the sealing property of the sealing rubber strip is enhanced permanently.

Preferably, sealing bags are arranged on two sides of the fixing groove; the inner part of the sealing bag is communicated with the cavity through air passages arranged at two sides of the fixing groove; when the temperature risees gradually in the cavity of inside, the higher gas of the inside temperature of this moment can flow in sealed bag from the air flue of top inside to make the gas increase in the sealed bag, and then produce the inflation arch, when making fixed slot both sides inseparabler and glass contact, carry out certain separation effect to the water droplet, reduce the possibility that influences joint strip leakproofness from the source.

Preferably, a scissor mechanism is uniformly arranged in the storage tank, and a group of elastic columns are equidistantly distributed on the side walls of the two sides of the storage tank; the uniform end of the scissor mechanism is hinged to the water absorption ball, the other end of the scissor mechanism is a free end, and the free end of the scissor mechanism can extrude the baffle under the pushing of the water absorption ball; when the water absorption ball absorbs certain water, certain expansion is generated, so that the shearing fork mechanism is pushed to work, the shearing fork mechanism extends along the storage tank, the baffle is pushed to deform, on one hand, the deformation range of the baffle is enhanced, the lithium oxide powder in the baffle is continuously extruded, the reaction is continuous, and the integral sealing property is enhanced; on the other hand, the baffle deforms forcibly to generate certain support, so that the strength of two sides of the sealing rubber strip fixing groove is enhanced, and the stability is improved; meanwhile, the elastic column can be forcibly extruded in the moving process of the fork shearing mechanism, so that the side wall of the storage tank is tightly abutted, and the integral structural strength is enhanced.

The invention has the following beneficial effects:

1. according to the invention, the water absorption ball absorbs water and then undergoes volume expansion, so that the lower bulge is gradually placed along the storage tank to deform, the two sides of the fixing tank slightly deform and tightly cling to glass, the sealing property of a door and a window is enhanced, and the working influence of poor sealing property on people in a vehicle is reduced.

2. According to the invention, the baffle plate which is elastically arranged deforms, so that lithium oxide powder falls into the cavity, then the lithium oxide powder reacts with overflowed water vapor, and heat is slowly released, so that the gas pressure in the whole cavity is increased, the two ends of the fixing groove are pushed to be gradually and tightly attached to glass along with the heat release degree, the sealing property of the door and the window is further enhanced, meanwhile, the moisture in the water absorption ball can be reacted, and the service life of the water absorption ball is prolonged.

Drawings

The invention will be further explained with reference to the drawings.

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

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a state diagram of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 2 at A;

FIG. 5 is an enlarged view of a portion of FIG. 2 at B;

FIG. 6 is a perspective view of a baffle according to the present invention

FIG. 7 is a front view of the baffle of the present invention;

in the figure: the device comprises a main body 1, a fixing groove 2, a storage groove 3, a metal elastic sheet 4, a sliding rod 5, a fixing block 6, a water absorption ball 7, a baffle plate 8, a tapered hole 81, a cavity 9, an arc-shaped channel 10, a sliding column 11, an annular groove 12, a sealing bag 13, a scissor mechanism 14 and an elastic column 15.

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 to 7, the environmental-friendly joint strip of the present invention includes a main body 1 and a fixing groove 2; two fixing grooves 2 are formed in the upper end and the lower end of the main body 1 in a paired mode, storage grooves 3 are formed in the middle of the main body 1 at equal intervals, and metal elastic sheets 4 are symmetrically arranged on two sides of the main body 1; through grooves communicated with each other are arranged between the two fixing grooves 2 at intervals; the through grooves are all connected with sliding rods 5 in a sliding manner; two ends of the sliding rod 5 are symmetrically and fixedly connected with two elastic fixed blocks 6; one sides of the two fixed blocks 6, which are close to the bottom of the fixed groove 2, are both arranged in an arc shape and matched with the bottom of the fixed groove 2; the storage tanks 3 are all connected with water absorption balls 7 in a sliding manner; the water absorption ball 7 can absorb water mist and expand. During operation, in the actual use process, doors and windows of the vehicle are sealed through sealing rubber strips, but a carrying vehicle which usually enters the refrigeration house suddenly moves to and from the refrigeration house under the environment with higher outdoor temperature, so that a large amount of water mist is adhered to the doors and the windows and drops into water drops, and the sealing rubber strips generate certain thermal expansion and cold contraction due to large temperature difference, so that part of the water drops slowly flow into the fixing grooves 2 of the sealing rubber strips, and the water drops are remained at the bottom and are difficult to remove; according to the invention, through the through grooves arranged between the fixed grooves 2, one of the fixed grooves 2 is firstly clamped on the fixed edge in the installation process, so that the fixed block 6 in the fixed groove 2 is extruded, the fixed block is tightly extruded at the bottom of the fixed groove 2, the slide rod 5 is pushed to move upwards, the slide rod 5 drives the fixed block 6 at the other end to separate from the bottom of the fixed groove 2 to generate a certain gap, when water drops fall into the bottom of the groove, the water drops slowly enter the storage groove 3 in the middle through the gap and are absorbed by the water absorption ball 7 arranged in the storage groove 3, and the optimal manufacturing material of the water absorption ball 7 is water absorption resin; the ball 7 that absorbs water can take place the volume expansion after absorbing moisture this moment to put down protruding deformation along hold up tank 3 gradually, thereby make 2 both sides of fixed slot slightly warp inseparabler and paste on glass, strengthened the leakproofness of door and window, reduced the poor work influence to personnel in the car of leakproofness.

As one embodiment, the two sides of the storage tank 3 are symmetrically arranged in a herringbone shape, one end of the storage tank 3, which is far away from the water absorption ball 7, is filled with lithium oxide powder, and one end of the storage tank 3, which is close to the lithium oxide powder, is provided with a baffle plate 8; both ends of the baffle 8 are inserted into both side walls of the storage tank 3, and the baffle 8 is elastically arranged; the upper side and the lower side of the water absorption ball 7 are both provided with a cavity 9; the cavities 9 are all arranged in an elliptical shape, one end of each cavity 9 is communicated with the end part of the storage tank 3 through an arc-shaped channel 10, and the other end of each cavity 9 is communicated with the position of the water absorption ball 7 through an arranged air hole; volume expansion after ball 7 absorbs certain moisture absorbs, thereby extrude the inside gas of hold up tank 3, make the inside gas compression of hold up tank 3, under compressed gas's promotion, the baffle 8 that elasticity set up can take place to warp, thereby the arc passageway 10 of the lithium oxide powder of promotion tip one side drops partly, the lithium oxide powder that subsequently drops can fall into cavity 9, react with the steam that spills over afterwards, slowly release heat, thereby make the gas pressure increase in the whole cavity 9, thereby promote the both ends of fixed slot 2 along with exothermic degree closely laminating gradually on glass, further strengthen the leakproofness of door and window, also can make the inside moisture of ball 7 that absorbs water reacted simultaneously, the life of ball 7 that absorbs water is absorbed in the extension.

As one embodiment, the upper end and the lower end of the absorption ball are fixedly connected with sliding columns 11; an annular groove 12 is formed in the outer surface of the lower portion of the sliding column 11; the sliding column 11 can slide up and down in the air hole under the pushing of the water absorption ball 7; according to the invention, the water absorption ball 7 is raised after water absorption and expansion, so that the sliding column 11 is jacked up to move upwards, when the sliding column 11 moves to a certain position, the annular groove 12 below the sliding column 11 is communicated with the cavity 9, so that the water absorption ball 7 can be directly extruded with lithium oxide powder in the cavity 9, and thus reaction heat release is generated, on one hand, the reaction amount of the lithium oxide powder is controlled by the up-and-down movement of the sliding column 11, and the use time of the lithium oxide powder is prolonged; on the other hand can be before 11 opening of travelers thoroughly react inside steam, strengthen exothermic time to make joint strip receive more sufficient of thermal energy, further improve holistic leakproofness, reduce staff's influence in the car.

As one embodiment, the baffle 8 is arc-shaped, the convex side of the baffle 8 is close to the water absorption ball 7, and a group of conical holes 81 are uniformly distributed on the arc-shaped baffle 8; when the water absorption ball 7 absorbs water and expands to compress the gas in the storage tank 3, the compression amplitude of the baffle 8 is small, and after the lithium oxide powder is consumed for a period of time, the lithium oxide powder can not be pushed out and can not be continuously reacted to release heat, so that the overall sealing performance of the sealing rubber strip is affected; by arranging the baffle plate 8 in an arc shape and arranging the tapered holes 81 on the baffle plate 8, on one hand, when the baffle plate 8 is extruded, lithium oxide powder in the baffle plate can be extruded out, so that the reaction is continuous, and the integral sealing property is enhanced; on the other hand, the baffle 8 is more easily extruded and deformed, the stable pushing out of the lithium oxide powder is ensured, and the sealing property of the sealing rubber strip is enhanced permanently.

As one embodiment, the two sides of the fixing groove 2 are provided with sealing bags 13; the inner parts of the sealing bags 13 are communicated with the cavity 9 through air passages arranged on two sides of the fixing groove 2; when the temperature risees gradually in the cavity 9 of inside, the higher gas of inside temperature can flow in sealed bag 13 inside from the air flue of top this moment to make gas increase in the sealed bag 13, and then produce the inflation arch, when making 2 both sides of fixed slot inseparabler and glass contact, carry out certain separation effect to the water droplet, reduce the possibility that influences joint strip leakproofness from the source.

As one embodiment, a scissor mechanism 14 is disposed in the storage tank 3, and a group of elastic columns 15 is equidistantly distributed on the side walls of both sides of the storage tank 3; the uniform end of the scissor mechanism 14 is hinged to the water absorption ball 7, the other end of the scissor mechanism is a free end, and the free end of the scissor mechanism 14 can extrude the baffle 8 under the pushing of the water absorption ball 7; when absorbing certain moisture, the water absorption ball 7 can expand to push the scissor mechanism 14 to work, so that the scissor mechanism 14 extends along the storage tank 3 to push the baffle 8 to deform, on one hand, the deformation amplitude of the baffle 8 is enhanced, the lithium oxide powder in the baffle is continuously extruded, the reaction is continuous, and the integral sealing property is enhanced; on the other hand, the baffle 8 is forced to deform to generate certain support, so that the strength of two sides of the sealing rubber strip fixing groove 2 is enhanced, and the stability is improved; meanwhile, the elastic column 15 is forcibly extruded in the moving process of the scissor mechanism 14, so that the side wall of the storage tank 3 is tightly abutted, and the integral structural strength is enhanced.

During operation, in the actual use process, doors and windows of the vehicle are sealed through sealing rubber strips, but a carrying vehicle which usually enters the refrigeration house suddenly moves to and from the refrigeration house under the environment with higher outdoor temperature, so that a large amount of water mist is adhered to the doors and the windows and drops into water drops, and the sealing rubber strips generate certain thermal expansion and cold contraction due to large temperature difference, so that part of the water drops slowly flow into the fixing grooves 2 of the sealing rubber strips, and the water drops are remained at the bottom and are difficult to remove; according to the invention, through the through grooves arranged between the fixed grooves 2, one of the fixed grooves 2 is firstly clamped on the fixed edge in the installation process, so that the fixed block 6 in the fixed groove 2 is extruded, the fixed block is tightly extruded at the bottom of the fixed groove 2, the slide rod 5 is pushed to move upwards, the slide rod 5 drives the fixed block 6 at the other end to separate from the bottom of the fixed groove 2 to generate a certain gap, when water drops fall into the bottom of the groove, the water drops slowly enter the storage groove 3 in the middle through the gap and are absorbed by the water absorption ball 7 arranged in the storage groove 3, and the optimal manufacturing material of the water absorption ball 7 is water absorption resin; the ball 7 that absorbs water can take place the volume expansion after absorbing moisture this moment to put down protruding deformation along hold up tank 3 gradually, thereby make 2 both sides of fixed slot slightly warp inseparabler and paste on glass, strengthened the leakproofness of door and window, reduced the poor work influence to personnel in the car of leakproofness.

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, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. An environmental protection joint strip which characterized in that: comprises a main body (1) and a fixing groove (2); the upper end and the lower end of the main body (1) are oppositely provided with two fixing grooves (2), the middle part of the main body (1) is provided with storage grooves (3) at equal intervals, and the two sides of the main body (1) are symmetrically provided with metal elastic sheets (4); through grooves communicated with each other are arranged between the two fixing grooves (2) at intervals; the through grooves are all connected with sliding rods (5) in a sliding manner; two ends of the sliding rod (5) are symmetrically and fixedly connected with two elastic fixed blocks (6); one sides of the two fixed blocks (6) close to the bottom of the fixed groove (2) are both arc-shaped and matched with the bottom of the fixed groove (2); the storage tanks (3) are all connected with water absorption balls (7) in a sliding manner; the water absorption ball (7) can absorb water mist and expand;

the two sides of the storage tank (3) are symmetrically arranged in a herringbone manner, lithium oxide powder is filled in one end, far away from the water absorption ball (7), of the storage tank (3), and a baffle (8) is arranged at one end, close to the lithium oxide powder, of the storage tank (3); both ends of the baffle (8) are inserted into both side walls of the storage tank (3), and the baffle (8) is elastically arranged; cavities (9) are formed in the upper side and the lower side of the water absorption ball (7); the cavities (9) are all arranged in an elliptical shape, one end of each cavity (9) is communicated with the end part of the storage tank (3) through an arc-shaped channel (10), and the other end of each cavity (9) is communicated with the position of the water absorption ball (7) through an air hole;

the upper end and the lower end of the absorption ball are fixedly connected with sliding columns (11); an annular groove (12) is formed in the outer surface of the lower portion of the sliding column (11); the sliding column (11) can slide up and down in the air hole under the pushing of the water absorption ball (7).

2. The environmental-friendly joint strip according to claim 1, wherein: baffle (8) set up to the arc, and baffle (8) bellied one side is close to ball (7) that absorbs water, a set of bell mouth (81) of equipartition on curved baffle (8).

3. The environmental-friendly joint strip according to claim 1, wherein: sealing bags (13) are arranged on the two sides of the fixing groove (2); the sealing bag (13) is communicated with the cavity (9) through air passages arranged on two sides of the fixing groove (2).

4. The environmental-friendly joint strip according to claim 1, wherein: a scissor mechanism (14) is uniformly arranged in the storage tank (3), and a group of elastic columns (15) are equidistantly distributed on the side walls of the two sides of the storage tank (3); the uniform end of the scissors mechanism (14) is hinged to the water absorption ball (7), the other end of the scissors mechanism is a free end, and the free end of the scissors mechanism (14) can extrude the baffle (8) under the pushing of the water absorption ball (7).