CN204136952U - The opening and closing structure of spray equipment - Google Patents

Abstract

A kind of opening and closing structure of spray equipment, include shower (1), in shower (1) between the upper and lower every be distributed with spray head (7), spray head (7) is connected with shower inner chamber (11), piston (2) is provided with in described shower (1), piston (2) and shower (1) inwall are arranged for being close to seal, piston (2) is sleeved on the screw rod (3) that stretches in shower (1), and piston (2) can move up and down along shower (1) inwall with the rotation of screw rod (3), piston (2) is threaded with screw rod (3) by eccentric screwhole, one end of screw rod (3) is stretched out shower (1) and is connected with the output shaft of drive motor (4), drive motor (4) and programme control circut form loop mutually, shower (1) is connected with fluid supply or high-pressure air source.Its advantage is: by the rotation of screw rod, piston is driven to seesaw in the inner chamber of shower, achieve the connection or the partition that control shower to be specified spray head, avoid water that spray head standard-sized sheet causes, electricity waste, have fairly obvious effects of energy saving and emission reduction.

Description

The opening and closing structure of spray equipment

Technical field

The utility model relates to a kind of washing equipment, especially a kind of opening and closing structure being applied to spray equipment.

Background technology

Existing a kind of patent No. is that CN200810059217.4 name is called that the Chinese invention patent application of " surrounding type non-contact wiping-free car washing machine " discloses a kind of surrounding type non-contact wiping-free car washing machine, comprise the two couples infrared word correlation probe being arranged on the two hanger bracket lower ends dangled in crossbeam both ends downwards and the arc hydrojet frame be made up of top liquid-spraying rod and hydrojet side lever, hydrojet frame can do the rotation that longitudinal direction, transverse shifting and the longitudinal axis along hydrojet frame do 360 degree under the drive of electrical motor.The invention provides a kind of hydrojet frame can the vehicle washing equipment of 360 degree of best carwash distances of continuous rotation, hydrojet frame and the moderate maintenance of car body.But, though the hydrojet frame of this device can do longitudinal direction, transverse direction and rotary motion, according to by the unlatching quantity of the change of the bodywork height everywhere adjustment spray head of cleaning vehicle, problems cannot be caused.For the cleaning of vehicle body side, a maximum cleaning is highly designed to the motor washer of 1900mm, for cleaning the three railway carriage or compartment small passenger cars that a bodywork height changes between 500-1480mm, when cleaning Vehicle head part, because engine case height is no more than 900mm, the height of hydrojet side lever is actual with the sprinkling action of each spray head of upper part at 900mm is invalid.Open the result of this part spray head, one is the water (the corresponding waste causing electric power in proportion) wasted more than 50%, two is that the working flow of High-Pressure Water to top liquid-spraying rod of hydrojet side lever causes lasting lateral impact, has seriously undermined impulsive force and the cleaning performance of top liquid-spraying rod.In like manner, drenching system also result in the excess emitters of pollutants in proportion when spraying car washing liquid.Because the height of hydrojet side lever can the vertex of carwash design by largest, therefore the actual height of washed car is always less than design value, always there is wasting phenomenon in the mode of operation of hydrojet side lever, and top spray boom is also like this, accumulate over a long period, result is very surprising.In addition, this spray boom function is comparatively single, can not adapt to the cleaning requirement of vehicle body different parts well.Therefore, the structure of this device is urgently improved.

Utility model content

Technical problem to be solved in the utility model provides one can open quantity according to thing height change adjustment spray head to be cleaned, and can spray the opening and closing structure for spray equipment of multiple pressure high pressure water or other working medium.

The utility model solves the problems of the technologies described above adopted technical scheme: the opening and closing structure of this spray equipment, include shower, in shower between the upper and lower every be distributed with spray head, spray head and shower intracavity inter-connection, it is characterized in that: in described shower, be provided with the piston that can move up and down along shower inwall, described piston and shower inwall are arranged for being close to seal, described piston bush is contained on the screw rod that stretches in shower, and piston can move up and down along shower inwall with the rotation of screw rod, described piston is linked together by eccentric screwhole and screw flight, the output shaft that shower and drive motor are stretched out in one end of described screw rod is connected, described drive motor and programme control circut form loop mutually, described shower is connected with fluid supply or high-pressure air source.Piston adopts the mode linked together by eccentric screwhole and screw flight, the center of turn of piston is made to depart from the vertical axis of shower, piston is subject to the friction force from shower inwall bearing force and screw rod all the time, ensure that piston cannot rotate around it center rotating, when thus can effectively avoid shower inner chamber to pass into high pressure water, because pressure increases suddenly, what piston rotated voluntarily under hydrodynamic thrust effect up or down may, realize the self-locking of piston, result of use is better.

As improvement, described screw rod is hollow structure, and described one end is connected with drive motor, the other end opening of described screw rod and shower intracavity inter-connection, and the inner chamber of described screw rod is connected with fluid supply or high-pressure air source by deferent.

Further improvement, the concrete structure that the inner chamber of described screw rod is connected with fluid supply or high-pressure air source by deferent is: described screw rod side face is provided with annular cavity, described deferent and annular cavity are tightly connected and are close together, be respectively arranged with in the bottom of annular cavity 1 to 4 with the through hole of the intracavity inter-connection of screw rod, the seal ring that the upper periphery of described annular cavity seals mutually to lower periphery and corresponding shower inwall.

Improve, the junction that described screw rod is connected with the output shaft of drive motor is provided with and makes shower inner chamber and the extraneous seal ring sealed again.

As improvement, screw rod in described shower has two, an one end from shower is inserted shower inner chamber, another root inserts shower inner chamber from the other end of shower, the end face inserting two screw rods in shower does not contact, every root screw rod wears eccentric piston, the outer end of respective screw rod is extended shower and is connected with the output shaft of corresponding drive motor, described drive motor is connected with programme control circut respectively by circuit, and the middle part inner chamber of described shower is connected with fluid supply or high-pressure air source by delivery pipe.

Further improvement, described screw rod extends shower place and arranges seal ring respectively.

Improve, when described shower is vertical shower, the shower inner chamber below the piston being positioned at shower bottom is also provided with the road water pipe be connected with low pressure purge liquid or low pressure water source or high-pressure water or high-pressure air source or low-pressure gas source again.

Compared with prior art, this device is by improving the structure of spray boom, make the mode of operation of spray equipment no longer simply extensive, no longer that all spray heads whole process is opened, no longer the water that all spray heads can only spray same pressure, but open as required, dirty characteristic for vehicle body different parts adopts different flushing pressures, its structure is simple, productive costs is low, installing space is little, without the need to changing the structure outside spray equipment, but the water that existing spray equipment exists can significantly be improved, electricity serious waste problem, be applied in motor washer and can realize the vehicle body bottom, the specific aim cleaning performance at the positions such as wheel, also reduce use and the quantity discharged of car washing liquid simultaneously, application prospect is good.

Accompanying drawing explanation

Fig. 1 is the effect figure of the utility model embodiment;

Fig. 2 is the section-drawing of single shower centrally after the section on plane of axis place in Fig. 1;

Fig. 3 is the STRUCTURE DECOMPOSITION figure of shower in Fig. 2;

Fig. 4 is the section-drawing of shower centrally after the section on plane of axis place in Fig. 1;

Fig. 5 is the STRUCTURE DECOMPOSITION figure of shower in Fig. 4;

Fig. 6 is the section-drawing of shower centrally after the section on plane of axis place of another kind of form in Fig. 4;

Fig. 7 is the STRUCTURE DECOMPOSITION figure of shower in Fig. 6;

Fig. 8 is the section-drawing of shower shown in Fig. 4 along A-A line;

Detailed description of the invention

Below in conjunction with accompanying drawing embodiment, the utility model is described in further detail.

As shown in Figures 1 to 8, the opening and closing structure of the spray equipment of the present embodiment, include shower 1, in shower 1 between the upper and lower every be distributed with spray head 7, spray head 7 is connected with shower inner chamber 11, the piston 2 that can move up and down along shower 1 inwall is provided with in described shower 1, described piston 2 is arranged for being close to seal with shower 1 inwall, described piston 2 is sleeved on the screw rod 3 that stretches in shower 1, and piston 2 can move up and down along shower 1 inwall with the rotation of screw rod 3, described piston 2 is threaded togather by eccentric screwhole and screw rod 3, one end of described screw rod 3 is stretched out shower 1 and is connected with the output shaft of drive motor 4, described drive motor 4 forms loop mutually with programme control circut, described shower 1 is connected with fluid supply or high-pressure air source.Described screw rod 3 is hollow structure, and described one end is connected with drive motor 4, and the other end opening of described screw rod 3 and shower 1 intracavity inter-connection, the inner chamber 31 of described screw rod 3 is connected with fluid supply or high-pressure air source by deferent 5.The concrete structure that the inner chamber 31 of described screw rod 3 is connected with fluid supply or high-pressure air source by deferent 5 is: described screw rod 3 side face is provided with annular cavity 6, described deferent 5 is tightly connected with annular cavity 6 and is close together, 1 to 4 through hole 61 be connected with the inner chamber 31 of screw rod 3 is respectively arranged with, the seal ring that the upper periphery 62 of described annular cavity 6 seals with corresponding shower 1 inwall mutually to lower periphery 63 in the bottom of annular cavity 6.The junction that described screw rod 3 is connected with the output shaft of drive motor 4 is provided with and makes shower inner chamber 11 and the extraneous seal ring 8 sealed.Screw rod 3 in described shower 1 has two, an one end from shower 1 is inserted shower inner chamber 11, another root inserts shower inner chamber 11 from the other end of shower 1, the end face inserting two screw rods 3 in shower 1 does not contact, every root screw rod 3 wears eccentric piston 2, the outer end of respective screw rod 3 is extended shower 1 and is connected with the output shaft of corresponding drive motor 4, described drive motor 4 is connected with programme control circut respectively by circuit, and the middle part inner chamber of described shower 1 is connected with fluid supply or high-pressure air source by delivery pipe 51.Described screw rod 3 extends shower 1 place and arranges seal ring 8 respectively.When described shower 1 is vertical shower 1, the shower inner chamber 11 below the piston 2 being positioned at shower 1 bottom is also provided with the road water pipe 52 be connected with low pressure purge liquid or low pressure water source or high-pressure water or high-pressure air source or low-pressure gas source.

Below the utility model is illustrated further:

During cleaning automobile, the wide size of height at different vehicle stand, different vehicle body position and cleaning, often require that spray equipment only needs opening section spray head in different vehicle body position.In addition, the Fouling Properties of the body top section of same car, headstock, the car bottom, wheel position also differs widely, such as, vehicle head part has more insect cadaveric ecchymoses, the car bottom has more mud, wheel portion black grease is heavier, etc., need to adopt cleaning agent, different high pressure water washing pressure, different absorptions targetedly dissolve and soften the time, carry out cleaning operation targetedly.When the utility model is applied on motor washer, can provide a kind of can according to by cleaning position bodywork height, width, take the circumstances into consideration to open or closed portion spray head, according to the method and apparatus of high pressure water being sprayed working medium and different pressures by the Fouling Properties of cleaning part, the specific aim of the spray head realizing motor washer medium because needing to open, in spray boom is sprayed, and avoids spray head whole process to open, the extensive mode of same pressure or same medium causes by problems such as water electricity consumption waste, pollutant emission increase, cleaning performance are undesirable.

The shower of spray equipment is made up of a top spray shower pipe, two vertical showers, and integral installation is on crossbeam, and along with the motion of crossbeam, vertical shower simultaneously around body movement, can complete the actions such as car washing liquid sprinkling or clear water flushing.Illustrate with vertical boom structure, the utility model is achieved in that motor washer shower inner chamber 11 is provided with piston 2 (lower piston namely in Fig. 3, upper piston), piston 2 is sleeved on screw rod 3 and can moves forward and backward along with the rotation of screw rod 3, and screw rod 3 is linked with the motor shaft of drive motor 4 of the end being arranged on shower 1.

Due to the existence of piston 2, and be mutually set together hermetically between the inwall of piston 2 and shower inner chamber 11, this shower inner chamber 11 is separated into three parts by piston 2: hollow lower divides 111, hollow center divides 112, hollow upper portion 113, the spray head 7 that these three sections of inner chambers are corresponding is in different pipeline conducting states thus.The motion of control plunger 2 and position, in conjunction with the opening and closing of triple valve, four-way cock in pipeline, get final product the various operating modes compositions of each spray head 7 spraying liquid of control realization.Shower 1 is provided with 9 spray heads, is followed successively by spray from bottom to top first to nine.Shown in Fig. 2, hollow lower divide the spray of 111 first ~ spray head three can with road water pipe 52 conducting of high pressure, silt particle fluffy powder, car washing liquid or high pressure water can be sprayed; Hollow center divide 112 spray head four ~ spray head six can with delivery pipe 51 conducting of low pressure, car washing liquid or low-pressure water can be sprayed; And the spray head seven ~ spray head nine of hollow upper portion 113 and deferent cut off, spray head 7 is anhydrous flows for each of this section, is in actual closed condition.

During specific works, motor drives spray equipment to move to vehicle body near sites to be cleaned along support body.First, programme control circut system opens loosing mud agent pump, loosing mud agent valve, and water pump and other valve are in closed condition, so loosing mud agent is by the road water pipe 52 of high pressure, by each spray head in bottom to sprinkling, the infiltration vehicle body bottom, the mud fast softening that bodywork surface is hardened.In this process, upper piston is failure to actuate, and programme control circut, according to the model data instruction lower piston action measured or arrange in advance, makes corresponding spray head open, to spray the vehicle body bottom position within the scope of corresponding height.Usually, for same car, lower piston is in a fixed position place, after the operation of sprinkling initial start stage puts in place, does not adjust in sprinkling process.

After aforesaid operations completes, open carwash liquid pump and car washing liquid valve, sprayed to full vehicle body by the road water pipe 52 of high pressure, the delivery pipe 51 of low pressure, water pump and other valve are in closed condition.In this process, lower piston is failure to actuate.At different vehicle body positions, programme control circut should spray the bodywork height of mud car washing liquid by the vehicle profile setting recorded, rotate instruction is sent to drive motor 4, and then drive screw turns, dragging upper piston move to corresponding position in screw rod 3 inside along screw rod 3, thus control the conducting or closed of corresponding spray head 7.Such as, the bodywork height of certain moment shower 1 correspondence is 1.0 meters, and shower 1 is spray head seven ~ spray head nine higher than the spray head of 1 meter, and is spray first six below this height.Then: under programme control circut controls, drive motor 4 rotates, drive motor axle forward or reverse, and then drive piston 2 to move forward and backward along screw rod 3, piston 2 is made to move to the correct position of shower inner chamber 11, the pipeline of spray head seven ~ nine is blocked, so these three spray heads are in closed condition; And spray that first ~ six and hollow lower divide 111, hollow center divides path between 112 and delivery pipe 51,52 without blocking-up, therefore the car washing liquid entered from water source, be able to from these six spray heads ejections.

After aforementioned operation completes, start clear water and rinse action.In this process, starting mode of pump, control, the action of piston are identical with during sprinkling car washing liquid, because of hollow lower divide 111, hollow center divides 112 to achieve Discrete control, can be supplied the clear water of different pressures respectively by delivery pipe 51 and road water pipe 52.Delivery pipe 51 and road water pipe 52 can adopt same high-pressure hydraulic pump, but the pipeline that is communicated with high-pressure hydraulic pump of delivery pipe 51 controls by pressure regulating valve, the spray head of supply hollow space 112 be low-pressure water.Each spray head 7 of hollow upper portion 113 part cannot be communicated with high-pressure hydraulic pump by upper piston intercepts, and can not spray water.For vehicle body side, under the flush time of routine, glass for vehicle window only has floating ash, only needs the clean water of below 2MPa, and the vehicle body bottom that mud, grease, insect corpse scar are heavier and wheel then need the high pressure water of about 10MPa to rinse.The vehicle serious to degree of foulings such as the cross-country cars that muddy highway runs over, can cut out delivery pipe 51, open water pipe 52, body bottom section be carried out to the flushing repeatedly of large discharge, high pressure, specifically can do multiple programs design and actual selection.

Because piston 2 and screw rod 3 are in eccentric setting, therefore when screw rod 3 rotates, piston 2 (namely lower piston, upper piston) herein can move up and down along screw rod 3 retainer shaft, instead of rotates simultaneously.Piston 2 also can not because of there is difference of pressure between its two bottom surface along screw rod 3 automatic moving.That is, the structure of this kind of piston 2, screw rod 3 decentraction, achieves the self-locking of piston 2.

Also have, in the upper end of vertical spray boom, a set of motor, piston 2 and screw rod 3 are installed, deferent 5 accesses from spray boom bottom, the double input channel doing silt particle fluffy powder, car washing liquid and water, spray head 7 above piston 2 is in closed condition, spray head 7 below piston 2 and deferent 5 conducting, but the high pressure water of each spray head ejection is in same operating, pressure indistinction.Certainly, also cannot spray different operating medium in shower 1 simultaneously.Realize the job requirement of aforementioned 2 pistons, need spray boom repeatedly to change working medium, thus add scavenging period.In this structure, screw rod 3 can be solid, does not play the function of liquid transmission pipeline.

In order to realize the control overflow of single piston, deferent 5 is from the structure type of shower 1 top access shower inner chamber 11, screw rod 3 is in hollow structure, the inner chamber 31 of the hollow structure of described screw rod 3 is connected with deferent 5, shower inner chamber 11, concrete structure is: the screw rod 3 of deferent 5 interface is provided with annular cavity 6,1 to 4 through hole 61 be connected with the inner chamber 31 of screw rod 3 is respectively arranged with in the bottom of annular cavity 6, the upper and lower end face of annular cavity 6 is periphery, and upper-lower seal circle seals mutually with the inwall of the shower inner chamber 11 being all periphery herein.High pressure water enters in the inner chamber 31 of screw rod 3 from deferent 5 through the through hole 61 of annular cavity 6, and then by the through hole of one end contrary with through hole 61 position of inner chamber 31, flow into the shower inner chamber 11 of shower 1, and then enter the endoporus of the part spray head 7 do not intercepted by piston 2, and form water jet through these spray heads 7 and spill to vehicle body, carry out cleaning operation.

Certainly, the screw rod 3 in the embodiment of aforementioned two pistons 2 also can be the structure that hollow leads to liquid, and corresponding deferent can have other mounting means, does not affect structure function.

Fig. 4 is the structure of the top spray pipe 1 in the present embodiment, and this shower 1 is with two pistons and a delivery pipe 51.Because of the difference of body width and vehicle body stand, the spray head 7 pairs of roofs needing the varying number at the middle part being positioned at top spray pipe spray car washing liquids or high pressure water, generally do not need to spray silt particle fluffy powder, also do not need the hydraulic pressure distinguishing the different section of shower.During specific works, the spray head between two pistons in Fig. 4 is opened, and the spray head 7 not conducting between piston and respective nozzle-end.The control object of this kind of piston, is mainly to save car washing liquid and water, and avoids the spray head 7 outside vehicle body to cause the interference of the water jet of the spray head 7 to vertical shower, affect the cleaning performance of vehicle body side.

Certainly, the medium in the mode of operation of above spray equipment and pipeline, shower has nothing to do, and no matter be water, car washing liquid or air, can realize the regulating effect of the conducting of corresponding part spray head or closedown, its principle is identical.Such as, choose in above embodiment and be not only applicable to water spray but also be applicable to jet dual-purpose spray head, as long as pass through shifter during equipment work, the water source switching that deferent 5 connects is communicated with to compressed air source, then working medium changes pressurized air into, namely whole spray equipment is the function of air-dry apparatus, the air-dry operation after can being advantageously used in automobile washing, and the design of corresponding shower is identical with mode of operation must not change.Be just more than illustrative ease and the comparatively simple spray head control overflow chosen and solution.In fact, according to the combination of the selection of piston 2 quantity, all kinds of working medium, Valve controlling and pump, and the requirement of different cleaning and program, the array mode of attainable spray head sprinkling action can also be more rich and varied, because of identical in principle, do not launch at this, can according to the complexity required design of automobile washing technique.

The utility model programme control circut is known technology, and the control of the height of piston 2, the length of screw rod 3 and piston movement distance etc. all use conventional electromechanical design knowledge to complete, and do not specifically describe at this.

In addition, the difference (including but not limited to following situation) of following various scheme mode is all at the row of intention of the present utility model:

1) this spray equipment is not only applicable to the motor washer structure of Fig. 1, can be all kinds such as planer-type, tunnel type;

2) cross section of shower inner chamber 11 can be circular, also can be other shape such as oblong, ellipse, keeps seesawing as long as can be beneficial to piston;

3) rotation of screw rod 3 can have various type of drive, can determine by particular case, such as: the screw rod 3 that manual or pneumatic mode drives.

4) shower purposes is not limit, and includes but not limited to: for clean roof top spray shower pipe, for cleaning the side spray shower pipe of vehicle body side, the end shower etc. for cleaning Vehicle chassis.No matter its whether interconnected or self-movement.

5) quantity of spray head, spacing and shower header type on shower.

The utility model is for the different cleaning requirements produced by the height change etc. of cleaning vehicle, by setting varying number, the position of piston 2, coordinate and control with the pump valve of the media such as car washing liquid, clear water or air, achieve the conducting of part spray head, part spray head is cut off and different medium, different hydraulic pressure the work combination of specific aim sprinkling etc.The technical solution of the utility model is when realizing the target of the controlled sprinkling of spray head 7, the novel structure adopted and succinct, be easy to processing and realize, improvement cost is not high, functional reliability is high, solve whole spray head whole process in prior art and product well and open the problems such as the water power caused is wasted, washer solvent consumption is large, solve the problem that vehicle body different parts is difficult to adopt different cleaning measure, even directly reduce water pump allocating power, significantly gas booster compressor manufacturing cost and running cost.Measuring and calculating shows, when the motor washer of design limit for height 1900mm cleans the three railway carriage or compartment family-sized car that a bodywork height changes between 500-1480mm, as adopted technical design of the present utility model, singly that vertical shower gets final product using water wisely or washer solvent consumption about 33.8%, and decrease corresponding power consumption, can wash targetedly vehicle body different parts simultaneously, direct improvement cleaning performance, and motor washer other structure except drenching system need not anyly be changed, greatly strengthen the applicability of equipment in various application place.Therefore economic benefit of the present utility model and social benefit are all very remarkable.

Claims (7)

1. the opening and closing structure of a spray equipment, include shower (1), in shower (1) between the upper and lower every be distributed with spray head (7), spray head (7) is connected with shower inner chamber (11), it is characterized in that: in described shower (1), be provided with the piston (2) that can move up and down along shower (1) inwall, described piston (2) and shower (1) inwall are arranged for being close to seal, described piston (2) is sleeved on the screw rod (3) that stretches in shower (1), and piston (2) can move up and down along shower (1) inwall with the rotation of screw rod (3), described piston (2) is threaded togather by eccentric screwhole and screw rod (3), one end of described screw rod (3) is stretched out shower (1) and is connected with the output shaft of drive motor (4), described drive motor (4) and programme control circut form loop mutually, described shower (1) is connected with fluid supply or high-pressure air source.

2. opening and closing structure according to claim 1, it is characterized in that: described screw rod (3) is hollow structure, described one end is connected with drive motor (4), the other end opening of described screw rod (3) and shower (1) intracavity inter-connection, the inner chamber (31) of described screw rod (3) is connected with fluid supply or high-pressure air source by deferent (5).

3. opening and closing structure according to claim 2, it is characterized in that: the concrete structure that the inner chamber (31) of described screw rod (3) is connected with fluid supply or high-pressure air source by deferent (5) is: described screw rod (3) side face is provided with annular cavity (6), described deferent (5) and annular cavity (6) are tightly connected and are close together, 1 to 4 through hole (61) be connected with the inner chamber (31) of screw rod (3) is respectively arranged with in the bottom of annular cavity (6), upper periphery (62) and the seal ring of lower periphery (63) with corresponding shower (1) inner wall sealing of described annular cavity (6).

4. opening and closing structure according to claim 3, is characterized in that: the junction that described screw rod (3) is connected with the output shaft of drive motor (4) is provided with and makes shower inner chamber (11) and the extraneous seal ring (8) sealed.

5. opening and closing structure according to claim 1 and 2, it is characterized in that: the screw rod (3) in described shower (1) has two, an one end from shower (1) is inserted shower inner chamber (11), another root inserts shower inner chamber (11) from the other end of shower (1), the end face inserting two screw rods (3) in shower (1) does not contact, every root screw rod (3) wears eccentric piston (2), the outer end of respective screw rod (3) is extended shower (1) and is connected with the output shaft of corresponding drive motor (4), described drive motor (4) is connected with programme control circut respectively by circuit, the middle part inner chamber of described shower (1) is connected with fluid supply or high-pressure air source by delivery pipe (51).

6. opening and closing structure according to claim 5, is characterized in that: described screw rod (3) extends shower (1) place and arranges seal ring (8) respectively.

7. opening and closing structure according to claim 6, it is characterized in that: when described shower (1) is for vertical shower (1), be also provided with the road water pipe (52) be connected with low pressure purge liquid or low pressure water source or high-pressure water or high-pressure air source or low-pressure gas source at the shower inner chamber (11) of piston (2) below being positioned at shower (1) bottom.