阅读说明：本技术 一种带有截污功能的城市地下排水泵 (Urban underground drainage pump with sewage intercepting function ) 是由 李洪武 于 2021-09-29 设计创作，主要内容包括：本发明公开了一种带有截污功能的城市地下排水泵,包括底座、保护箱、减震座、第一水泵、第二水泵、第一伸缩管、第二伸缩管、第三伸缩管、第四伸缩管、过滤组件、滤污组件、散热组件和减震移动组件,所述减震移动组件设于底座上,所述保护箱设于底座上,所述散热组件设于保护箱内,所述减震座设于保护箱内,所述减震座对称设有两组,所述第一水泵和第二水泵分别设于两组减震座上,所述过滤组件设于保护箱内。本发明涉及排水泵技术领域,具体是提供了一种便于移动和锁止固定,截污效果好,能够有效避免水泵内部堵塞和损坏,散热和减震效果好,便于实现水资源的再利用的带有截污功能的城市地下排水泵。(The invention discloses an urban underground drainage pump with a sewage interception function, which comprises a base, a protection box, a shock absorption seat, a first water pump, a second water pump, a first telescopic pipe, a second telescopic pipe, a third telescopic pipe, a fourth telescopic pipe, a filtering assembly, a sewage filtering assembly, a heat dissipation assembly and a shock absorption moving assembly, wherein the shock absorption moving assembly is arranged on the base, the protection box is arranged on the base, the heat dissipation assembly is arranged in the protection box, the shock absorption seat is arranged in the protection box, the shock absorption seats are symmetrically provided with two groups, the first water pump and the second water pump are respectively arranged on the two groups of shock absorption seats, and the filtering assembly is arranged in the protection box. The invention relates to the technical field of drainage pumps, and particularly provides an urban underground drainage pump with a sewage interception function, which is convenient to move, lock and fix, has a good sewage interception effect, can effectively avoid internal blockage and damage of a water pump, has good heat dissipation and shock absorption effects, and is convenient to realize reuse of water resources.)

1. The utility model provides a city underground drainage pump with cut dirty function which characterized in that: comprises a base, a protection box, a shock absorption seat, a first water pump, a second water pump, a first telescopic pipe, a second telescopic pipe, a third telescopic pipe, a fourth telescopic pipe, a filtering component, a dirt filtering component, a heat dissipation component and a shock absorption moving component, wherein the shock absorption moving component is arranged on the base, the protection box is arranged on the base, the heat dissipation component is arranged in the protection box, the shock absorption seat is symmetrically provided with two groups, the first water pump and the second water pump are respectively arranged on the two groups of shock absorption seats, the filtering component is arranged in the protection box, the first telescopic pipe is arranged on a water inlet of the first water pump and penetrates through the protection box to extend out of the protection box, the dirt filtering component is arranged on the first telescopic pipe, the second telescopic pipe is arranged on a water outlet of the first water pump, one end of the second telescopic pipe far away from the first water pump is arranged on the filtering component, the third telescopic pipe is arranged on a water inlet of the second water pump, one end of the third telescopic pipe, which is far away from the second water pump, is arranged on the filtering component, and the fourth telescopic pipe is arranged on the water outlet of the second water pump and penetrates through the protection box to extend out of the protection box.

2. The urban underground drainage pump with the sewage interception function according to claim 1, wherein: the shock absorption seat comprises a bottom column, a trapezoidal support column, a support plate and a trapezoidal sliding block, the bottom column is arranged in the protection box, a cavity is arranged in the bottom column, the first spring is arranged in the cavity, the trapezoidal sliding block is arranged on the first spring and is slidably arranged in the cavity, a first sliding block and a second sliding block are respectively arranged at the lower end and the upper end of the trapezoidal sliding block, a first sliding rail and a second sliding rail are respectively arranged at the lower end and the upper end of the cavity, the first sliding block is clamped and slidably arranged in the first sliding rail, the second sliding block is clamped and slidably arranged in the second sliding rail, the trapezoidal support column extends into the cavity in a sliding manner and is slidably arranged on the trapezoidal sliding block, a roller groove is formed in the trapezoidal support column, a connecting rod is arranged on the trapezoidal support column, a roller is rotatably arranged on the connecting rod, the roller is slidably arranged in the roller groove, and the support plate is arranged at one end, outside the cavity, of the trapezoidal support column, the first water pump and the second water pump are respectively arranged on two groups of supporting plates in the two groups of damping seats.

3. The urban underground drainage pump with the sewage interception function according to claim 2, wherein: the filter assembly comprises a filter box, a filter layer, a high-density filter layer and a sterilization and disinfection device, supporting legs are arranged on the filter box, the filter box is arranged in the protective box through the supporting legs, the filter layer, the high-density filter layer and the sterilization and disinfection device are sequentially arranged in the filter box from bottom to top, one end, far away from the first water pump, of the second telescopic pipe is arranged on the filter box, and one end, far away from the second water pump, of the third telescopic pipe is arranged on the filter box.

4. The urban underground drainage pump with the sewage interception function according to claim 1, wherein: the dirt filtering component comprises a connecting pipe, an extension plate, a second spring, a scraper and a sludge filtering sleeve, the connecting pipe is arranged on a first extension pipe, the extension plate is arranged on the connecting pipe, the second spring is arranged on the extension plate, the sludge filtering sleeve is arranged on the second spring and is sleeved on the connecting pipe in a sliding manner, the scraper is arranged on the connecting pipe and is in contact with the inner wall of the sludge filtering sleeve, and a balancing weight is arranged in the sludge filtering sleeve.

5. The urban underground drainage pump with the sewage interception function according to claim 3, wherein: the heat dissipation assembly comprises a chain, fan blades, a first rotating shaft, a second rotating shaft, a first chain wheel and a second chain wheel, the first rotating shaft is arranged in the protection box in a rotating mode, the first chain wheel is sleeved on the first rotating shaft, the second rotating shaft is arranged in the protection box in a rotating mode, the second chain wheel is sleeved on the second rotating shaft, the chain is sleeved on the first chain wheel and the second chain wheel, the fan blades are provided with a plurality of groups, and the fan blades are arranged on the first rotating shaft and the second rotating shaft respectively.

6. The urban underground drainage pump with the sewage interception function according to claim 1, wherein: the shock attenuation removes the subassembly and includes the slide bar, from locking-type universal wheel, third spring and fourth spring, be equipped with the slip chamber on the base, the slide bar slides and runs through the slip chamber and extend to outside the slip chamber, the fourth spring is located on the base, locate on slide bar and the fourth spring from the locking-type universal wheel, the third spring cup joints and locates on the slide bar, the base is located respectively at the both ends of third spring and on the self-locking-type universal wheel.

7. The urban underground drainage pump with the sewage interception function according to claim 5, wherein: the protection box is internally provided with a motor, and the first rotating shaft is arranged on an output shaft of the motor.

8. The urban underground drainage pump with the sewage interception function according to claim 7, wherein: and a sound insulation layer is arranged on the inner wall of the protection box.

9. The urban underground drainage pump with the sewage interception function according to claim 8, wherein: the protective box is provided with air holes and a heat dissipation window, and the heat dissipation window is provided with a filter screen.

10. The urban underground drainage pump with the sewage interception function according to claim 3, wherein: the filter box is provided with a slag discharging pipe, and the slag discharging pipe is provided with a sealing cover.

Technical Field

The invention relates to the technical field of drainage pumps, in particular to an urban underground drainage pump with a sewage interception function.

Background

The dirty effect of current drain pump cut is relatively poor, often can take place silt and get into the inside condition that leads to the pump body to block up and damage of water pump, and the removal of being inconvenient for mostly of current drain pump, can't cushion the vibrations that the water pump during operation produced, and the radiating effect is poor, appears easily because of the problem that the inside temperature of water pump risees and lead to the part damage, and current drain pump function is also comparatively single, is difficult to realize the reuse to the water resource, often causes the waste of water resource.

Disclosure of Invention

In order to overcome the defects of the prior art, the urban underground drainage pump with the sewage interception function is convenient to move, lock and fix, good in sewage interception effect, capable of effectively avoiding blockage and damage inside a water pump, good in heat dissipation and shock absorption effects and convenient to recycle water resources.

The technical scheme adopted by the invention is as follows: the invention relates to an urban underground drainage pump with a sewage intercepting function, which comprises a base, a protective box, a shock absorption seat, a first water pump, a second water pump, a first telescopic pipe, a second telescopic pipe, a third telescopic pipe, a fourth telescopic pipe, a filtering component, a sewage filtering component, a heat dissipation component and a shock absorption moving component, wherein the shock absorption moving component is arranged on the base, the protective box is arranged on the base, the heat dissipation component is arranged in the protective box, the shock absorption seat is arranged in the protective box, the shock absorption seats are symmetrically provided with two groups, the first water pump and the second water pump are respectively arranged on the two groups of shock absorption seats, the filtering component is arranged in the protective box, the first telescopic pipe is arranged on a water inlet of the first water pump and penetrates through the protective box to extend out of the protective box, the sewage filtering component is arranged on the first telescopic pipe, the second telescopic pipe is arranged on a water outlet of the first water pump, one end of the second telescopic pipe, which is far away from the first water pump, is arranged on the filtering component, the third telescopic pipe is arranged on a water inlet of the second water pump, one end, far away from the second water pump, of the third telescopic pipe is arranged on the filtering component, and the fourth telescopic pipe is arranged on a water outlet of the second water pump and penetrates through the protection box to extend out of the protection box.

Further, the shock absorption seat comprises a bottom column, a trapezoidal support column, a support plate and a trapezoidal sliding block, the bottom column is arranged in the protection box, a cavity is arranged in the bottom column, the first spring is arranged in the cavity, the trapezoidal sliding block is arranged on the first spring and is slidably arranged in the cavity, a first sliding block and a second sliding block are respectively arranged at the lower end and the upper end of the trapezoidal sliding block, a first sliding rail and a second sliding rail are respectively arranged at the lower side and the upper side in the cavity, the first sliding block is clamped and slidably arranged in the first sliding rail, the second sliding block is clamped and slidably arranged in the second sliding rail, the trapezoidal support column extends into the cavity in a sliding manner and is slidably arranged on the trapezoidal sliding block, a roller groove is arranged on the trapezoidal support column, a connecting rod is arranged on the trapezoidal support column, a roller is rotatably arranged on the connecting rod, the roller is slidably arranged in the roller groove, and the support plate is arranged at one end, which is positioned outside the cavity, on the trapezoidal support column, the first water pump and the second water pump are respectively arranged on two groups of supporting plates in the two groups of damping seats.

Further, the filtering component comprises a filtering box, a filtering layer, a high-density filtering layer and a sterilization and disinfection device, supporting legs are arranged on the filtering box, the filtering box is arranged in the protective box through the supporting legs, the filtering layer, the high-density filtering layer and the sterilization and disinfection device are sequentially arranged in the filtering box from bottom to top, one end, far away from the first water pump, of the second telescopic pipe is arranged on the filtering box, and one end, far away from the second water pump, of the third telescopic pipe is arranged on the filtering box.

Further, strain dirty subassembly and include connecting pipe, extension board, second spring, scraper and strain the mud sleeve, the connecting pipe is located on the first flexible pipe, the extension board is located on the connecting pipe, the second spring is located on the extension board, strain the mud sleeve and locate on the connecting pipe on locating the second spring and slip the cup joint, the scraper is located on the connecting pipe and with strain mud sleeve inner wall contact, be equipped with the balancing weight in straining the mud sleeve.

Further, radiator unit includes chain, flabellum, first pivot, second pivot, first sprocket and second sprocket, the guard box is located to first pivot rotation, first sprocket cup joints on locating first pivot, the guard box is located to the second pivot rotation, the second sprocket cup joints on locating the second pivot, the chain cup joints on locating first sprocket and second sprocket, the flabellum is equipped with a plurality of groups, a plurality of groups the flabellum is located respectively in first pivot and the second pivot.

Further, the subassembly is removed in shock attenuation includes the slide bar, from locking-type universal wheel, third spring and fourth spring, be equipped with the slip chamber on the base, the slide bar slides and runs through the slip chamber and extend to outside the slip chamber, the fourth spring is located on the base, locate on slide bar and the fourth spring from the locking-type universal wheel, the third spring cup joints on locating the slide bar, the both ends of third spring are located respectively on base and the self-locking-type universal wheel.

Further, a motor is arranged in the protection box, and the first rotating shaft is arranged on an output shaft of the motor.

Furthermore, a sound insulation layer is arranged on the inner wall of the protection box.

Furthermore, the protection box is provided with an air hole and a heat dissipation window, and the heat dissipation window is provided with a filter screen.

Furthermore, be equipped with the pipe of slagging tap on the rose box, be equipped with sealed lid on the pipe of slagging tap.

The invention with the structure has the following beneficial effects: the scheme is provided with the damping seat, and the vibration generated when the first water pump and the second water pump work can be buffered conveniently through the damping seat; the scheme is provided with the filtering component, so that sewage can be conveniently filtered by a plurality of filtering layers through the filtering component, the purification effect of the sewage is enhanced, the sewage enters the filtering box from the bottom of the filtering box and is discharged from the top of the filtering box, so that the filtered small sand and stone can be descended to the bottom under the action of self gravity, then the sludge and the small sand and stone can be discharged through the slag discharge pipe, and the purification effect is better; the sewage filtering component is arranged, so that sludge in sewage can be conveniently filtered through the sewage filtering component, and the blockage of the sludge filtering sleeve can be avoided to a certain extent; the heat dissipation assembly is arranged, so that heat dissipation is conveniently carried out on the protection box, the first water pump and the second water pump; this scheme is equipped with the shock attenuation and removes the subassembly, removes the subassembly through the shock attenuation and is convenient for remove with the locking is fixed to the device to can cushion the vibrations that remove the in-process and produce.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic diagram of the overall structure of an underground drainage pump with a sewage interception function in a city according to the invention;

FIG. 2 is an enlarged view of part A of the overall structural schematic diagram of the urban underground drainage pump with the sewage interception function;

FIG. 3 is an enlarged view of part B of the overall structural schematic diagram of the urban underground drainage pump with the sewage interception function;

FIG. 4 is a schematic diagram of a filter assembly of an underground drainage pump with a dirt-intercepting function;

FIG. 5 is a schematic diagram of a mud filter sleeve of an underground drainage pump with a dirt-intercepting function.

Wherein, 1, a base, 2, a protection box, 3, a shock absorption seat, 4, a first water pump, 5, a second water pump, 6, a first telescopic pipe, 7, a second telescopic pipe, 8, a third telescopic pipe, 9, a fourth telescopic pipe, 10, a filtering component, 11, a dirt filtering component, 12, a heat dissipation component, 13, a shock absorption moving component, 14, a bottom column, 15, a trapezoidal support column, 16, a support plate, 17, a trapezoidal sliding block, 18, a roller, 19, a connecting rod, 20, a first spring, 21, a first sliding rail, 22, a second sliding rail, 23, a first sliding block, 24, a second sliding block, 25, a filtering box, 26, a filtering layer, 27, a high-density filtering layer, 28, a sterilization device, 29, a connecting pipe, 30, an extension plate, 31, a second spring, 32, a scraper, 33, a mud filtering sleeve, 34, a chain, 35, a fan blade, 36, a first rotating shaft, 37, a second rotating shaft, 38 and a first chain wheel, 39. the device comprises a second chain wheel 40, a sliding rod 41, a self-locking universal wheel 42, a third spring 43, a fourth spring 44, a motor 45, a sound insulation layer 46, a filter screen 47, a slag discharge pipe 48 and a sealing cover.

Detailed Description

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

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

As shown in fig. 1-5, the urban underground drainage pump with the sewage intercepting function of the present invention comprises a base 1, a protection box 2, a vibration-damping seat 3, a first water pump 4, a second water pump 5, a first extension tube 6, a second extension tube 7, a third extension tube 8, a fourth extension tube 9, a filtering component 10, a sewage filtering component 11, a heat dissipation component 12 and a vibration-damping moving component 13, wherein the vibration-damping moving component 13 is arranged on the base 1, the protection box 2 is arranged on the base 1, the heat dissipation component 12 is arranged in the protection box 2, the vibration-damping seat 3 is symmetrically provided with two groups, the first water pump 4 and the second water pump 5 are respectively arranged on the two groups of vibration-damping seats 3, the filtering component 10 is arranged in the protection box 2, the first extension tube 6 is arranged on a water inlet of the first water pump 4 and extends out of the protection box 2 through the protection box 2, the sewage filtering component 11 is arranged on the first extension tube 6, the second telescopic pipe 7 is arranged on a water outlet of the first water pump 4, one end, far away from the first water pump 4, of the second telescopic pipe 7 is arranged on the filtering component 10, the third telescopic pipe 8 is arranged on a water inlet of the second water pump 5, one end, far away from the second water pump 5, of the third telescopic pipe 8 is arranged on the filtering component 10, and the fourth telescopic pipe 9 is arranged on the water outlet of the second water pump 5 and penetrates through the protection box 2 to extend out of the protection box 2.

The shock absorption seat 3 comprises a bottom column 14, a trapezoid support column 15, a support plate 16 and a trapezoid sliding block 17, wherein the bottom column 14 is arranged in the protection box 2, a cavity is arranged in the bottom column 14, a first spring 20 is arranged in the cavity, the trapezoid sliding block 17 is arranged on the first spring 20 and is slidably arranged in the cavity, a first sliding block 23 and a second sliding block 24 are respectively arranged at the lower end and the upper end of the trapezoid sliding block 17, a first sliding rail 21 and a second sliding rail 22 are respectively arranged at the lower side and the upper side in the cavity, the first sliding block 23 is slidably arranged in the first sliding rail 21 in a clamping manner, the second sliding block 24 is slidably arranged in the second sliding rail 22 in a clamping manner, the trapezoid support column 15 extends into the cavity and is slidably arranged on the trapezoid sliding block 17, a roller 18 groove is arranged on the trapezoid sliding block 17, a connecting rod 19 is arranged on the trapezoid support column 15, a roller 18 is rotatably arranged on the connecting rod 19, the roller 18 is slidably arranged in the roller 18 groove, the support plate 16 is arranged at one end of the trapezoid support column 15 outside the cavity, the first water pump 4 and the second water pump 5 are respectively arranged on two groups of supporting plates 16 in the two groups of shock absorption seats 3.

The filter assembly 10 comprises a filter box 25, a filter layer 26, a high-density filter layer 27 and a sterilization and disinfection device 28, supporting legs are arranged on the filter box 25, the filter box 25 is arranged in the protection box 2 through the supporting legs, the filter layer 26, the high-density filter layer 27 and the sterilization and disinfection device 28 are sequentially arranged in the filter box 25 from bottom to top, one end, far away from the first water pump 4, of the second telescopic pipe 7 is arranged on the filter box 25, and one end, far away from the second water pump 5, of the third telescopic pipe 8 is arranged on the filter box 25.

Strain dirty subassembly 11 including the connecting pipe 29, extend board 30, second spring 31, scraper 32 and strain mud sleeve 33, connecting pipe 29 is located on first flexible pipe 6, extend board 30 and locate on connecting pipe 29, second spring 31 is located and is extended on board 30, strain mud sleeve 33 and locate on second spring 31 and slip the cover locate connecting pipe 29, scraper 32 is located on connecting pipe 29 and with strain mud sleeve 33 inner wall contact, strain and be equipped with the balancing weight in the mud sleeve 33.

Radiating component 12 includes chain 34, flabellum 35, first pivot 36, second pivot 37, first sprocket 38 and second sprocket 39, first pivot 36 is rotatory to be located in guard box 2, first sprocket 38 cup joints and locates on first pivot 36, second pivot 37 is rotatory to be located in guard box 2, second sprocket 39 cup joints and locates on second pivot 37, chain 34 cup joints and locates on first sprocket 38 and second sprocket 39, flabellum 35 is equipped with a plurality of groups, a plurality of groups of flabellums 35 are located respectively on first pivot 36 and the second pivot 37.

The shock-absorbing moving assembly 13 comprises a sliding rod 40, a self-locking universal wheel 41, a third spring 42 and a fourth spring 43, a sliding cavity is arranged on the base 1, the sliding rod 40 penetrates through the sliding cavity in a sliding mode and extends to the outside of the sliding cavity, the fourth spring 43 is arranged on the base 1, the self-locking universal wheel 41 is arranged on the sliding rod 40 and the fourth spring 43, the third spring 42 is sleeved on the sliding rod 40, and two ends of the third spring 42 are respectively arranged on the base 1 and the self-locking universal wheel 41.

The motor 44 is arranged in the protection box 2, and the first rotating shaft 36 is arranged on an output shaft of the motor 44.

The inner wall of the protection box 2 is provided with a sound insulation layer 45.

The protection box 2 is provided with an air hole and a heat dissipation window, and the heat dissipation window is provided with a filter screen 46.

A slag outlet pipe 47 is arranged on the filter box 25, and a sealing cover 48 is arranged on the slag outlet pipe 47.

When the device is used in detail, the drainage pump can be moved to a specified position and locked and fixed through the self-locking universal wheel 41, vibration generated in the moving process can be buffered through the third spring 42 and the fourth spring 43, after the device is moved, the dirt filtering component 11 is placed in water, the first water pump 4 and the second water pump 5 are started, sewage is extracted through the first water pump 4, the mud filtering sleeve 33 can isolate large-particle silt in the water, further the damage to the first water pump 4 caused by the fact that the first water pump 4 sucks excessive silt particles through the first telescopic pipe 6 can be avoided, the drainage cost is increased, meanwhile, the first water pump 4 generates certain vibration in the water pumping process, the connecting pipe 29 is driven to vibrate through the first telescopic pipe 6, so that the connecting pipe 29 slides in the mud filtering sleeve 33, the connecting pipe 29 drives the scraper 32 to slide to scrape the silt on the mud filtering sleeve 33 (the first telescopic pipe 6 can be pulled manually to scrape the silt if necessary), and then can avoid silt particle to block up the mud filtering sleeve 33 to a certain extent, the first water pump 4 injects the pumped water into the filter box 25 through the second telescopic pipe 7, the water injected into the filter box 25 carries on multiple filtration through the filter layer 26, the high density filter layer 27 and the sterilization and disinfection device 28, the water is discharged into the fourth telescopic pipe 9 through the fourth telescopic pipe 9 and the second water pump 5, and finally is discharged through the fourth telescopic pipe 9, so that the water can become water available in other construction, the recycling of water resource is realized, the waste of water resource is avoided, the vibration generated in the working process of the first water pump 4 and the second water pump 5 can be buffered through the first spring 20, when the heat dissipation needs to be carried out in the protective box 2 and the first water pump 4 and the second water pump 5, the motor 44 is started, so that the motor 44 drives the first rotating shaft 36 to rotate, the first rotating shaft 36 drives the first chain wheel 38 to rotate, the first chain wheel 38 drives the second chain wheel 39 to rotate through the chain 34, the second chain wheel 39 drives the second rotating shaft 37 to rotate, the first rotating shaft 36 and the second rotating shaft 37 respectively drive the fan blades 35 thereon to rotate for heat dissipation, and noise generated during the operation of the first water pump 4 and the second water pump 5 can be reduced through the sound insulation layer 45.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.