CN114321730B

CN114321730B - Self-filtering corrosion-resistant pump valve pipeline

Info

Publication number: CN114321730B
Application number: CN202111604929.1A
Authority: CN
Inventors: 范富玲
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-25
Filing date: 2021-12-25
Publication date: 2024-02-06
Anticipated expiration: 2041-12-25
Also published as: CN114321730A

Abstract

The invention discloses a self-filtering corrosion-resistant pump valve pipeline which comprises a shell, wherein connecting pipes are communicated with two sides of the shell, a partition plate is arranged at the top of the shell in a penetrating way, a limiting mechanism is arranged at the top of the partition plate, the limiting mechanism comprises rectangular sliding grooves formed in the front side and the rear side of the top of the partition plate, a limiting clamping piece is connected to an inner cavity of the rectangular sliding groove in a sliding way, and a limiting clamping hook is fixedly connected to the front side and the rear side of the top of the shell.

Description

Self-filtering corrosion-resistant pump valve pipeline

Technical Field

The invention relates to the technical field of pump valve pipelines, in particular to a self-filtering corrosion-resistant pump valve pipeline.

Background

The separation of the mixture is achieved by forcing the fluid in the liquid-solid or gas-solid mixture through a porous filter medium, trapping the suspended solid particles therein, which is a unit operation belonging to the hydrodynamic process, the filtration of the liquid-solid mixture being carried out under the action of a pressure difference (including the pressure difference caused by gravity) or centrifugal force, the mixture to be filtered being called a filter slurry, the clarified liquid passing through the filter medium being called a filtrate, the layer of trapped solid particles being called a filter cake, the filtration of the gas-solid mixture being generally carried out under the action of a pressure difference, the filtration operation sometimes being for the purpose of obtaining a clarified fluid, such as a filtration of lubricating oil or air; sometimes to obtain suspended solid particles, such as crystals, from a mother liquor; sometimes both.

For impurities in a pump valve pipeline, a filtering device is required to be used for providing protection for the inner wall of the pipeline, and the existing pump valve pipeline filtering device has the following defects in the actual use process:

in the existing pipeline filtering device, a filter screen is generally fixed and installed by bolts, and the mode achieves a good installation and fixation effect, but in the actual use process, more time and effort are required for disassembling the filter screen;

when the existing pipeline filtering device filters metal impurities, the positions of the metal impurities cannot be fixed, so that the metal impurities still move in the pipeline, the texture of the metal impurities is hard, and the inner wall of the pipeline is damaged;

when the existing aisle filtering device cleans the filter screen, the filter screen is generally required to be disassembled, so that the time and energy of a user are consumed by frequent disassembly on one hand, and the tightness of the filter screen and the installation position of the filter screen can be reduced on the other hand.

Based on the above, the invention provides a self-filtering corrosion-resistant pump valve pipeline for solving the problems.

Disclosure of Invention

The invention aims to provide a self-filtering corrosion-resistant pump valve pipeline which has the advantages of good filtering effect, convenience in disassembly and assembly, maintenance and rapid impurity cleaning, and solves the problems that when the traditional pipeline filtering device filters metal impurities, the metal impurities cannot be fixed in position, so that the metal impurities still move in the pipeline, the metal impurities with harder textures cause damage to the inner wall of the pipeline, and the traditional passage filtering device generally needs to disassemble a filter screen when the filter screen is cleaned, the frequent disassembly consumes time and energy of a user, and the tightness of the filter screen and the installation position of the filter screen is reduced.

In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a self-filtering corrosion-resistant pump valve pipeline, which comprises a housin, the both sides of casing all communicate there is the connecting pipe, the top of casing runs through and is provided with the division board, the top of division board is provided with stop gear, stop gear is including the rectangle spout of seting up in division board top front side and rear side, the inner chamber sliding connection of rectangle spout has spacing fastener, the front side and the rear side at casing top all fixedly connected with spacing trip, the spacing through-hole with spacing trip looks adaptation is seted up to one side of rectangle spout inner chamber bottom, two relative one sides of spacing fastener all weld the spring, the one end that the spring kept away from spacing fastener is welded with the inner wall of rectangle spout, the inner chamber of division board is provided with filter media, filter media includes the rose box that is arranged in the division board inner chamber, the inner chamber of rose box is provided with magnetism and inhale the mechanism, the left side embedding of rose box is provided with the filter screen, the bottom fixedly connected with box, the inner chamber of box is provided with actuating mechanism, actuating mechanism including installing motor box bottom one side, the ball valve is equipped with the ball valve inner chamber and the ball valve, the ball valve is connected with the inner chamber of the ball valve, the ball valve is connected with the bottom of jack post, the connecting pipe is connected with the inner chamber that the front end of transmission post is all fixed with, and the ball valve is connected with the inner chamber, the bottom of transmission pinion rack surface just is located the inner chamber fixedly connected with atress gear of box, the front side of connecting pipe is provided with water supply mechanism, water supply mechanism is including the delivery pipe that is linked together with the spherical cavity in left side, and the front side intercommunication that is located the spherical cavity in right side has the waste liquid discharge tube, the front side of box is provided with the water pump, the one end that spherical cavity was kept away from to the delivery pipe is linked together with the play water end of water pump.

Preferably, the top of the limiting clamp hook is an outer inclined plane, and one side of the bottom of the limiting clamp piece is an inner inclined plane matched with the limiting clamp hook.

Preferably, the magnetic attraction mechanism comprises turbine blades rotatably connected to the inner cavity of the filter box, and an annular groove matched with the turbine blades is formed in the inner wall of the filter box.

Preferably, the right side of the turbine fan blade is provided with a circular groove, the left side of the inner cavity of the circular groove is fixedly connected with a magnetic suction column, and the surface of the magnetic suction column is provided with a coil in a ring mode.

Preferably, both sides of the surface of the filter box are fixedly connected with limiting rings, and both sides of the inner wall of the isolation plate are provided with limiting arc grooves matched with the limiting rings.

Preferably, the two transmission toothed plates are meshed with the driving gear, teeth are not distributed at the left end of one side, close to the driving gear, of the front transmission toothed plate, and teeth are not distributed at the right end of one side, close to the driving gear, of the rear transmission toothed plate.

Preferably, the force-bearing gear on the left is meshed with the transmission toothed plate on the rear side, and the force-bearing gear on the right is meshed with the transmission toothed plate on the front side.

Preferably, both sides and the front side of the water-blocking ball valve are provided with water supply through holes, and the three water supply through holes positioned on the same side are mutually communicated.

Preferably, the left side of rose box surface is provided with the external screw thread, the left side of division board inner wall is provided with the internal screw thread with rose box looks adaptation.

Preferably, the rubber sealing rings are fixedly connected to the two sides of the isolation plate, and arc-shaped grooves matched with the rubber sealing rings are formed in the two sides of the inner cavity of the shell.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the self-filtering corrosion-resistant pump valve pipeline, the purposes of good filtering effect, convenience in disassembly and assembly and maintenance and rapid impurity cleaning are achieved by using the separation plate and the limiting mechanism in a matched mode, the filtering mechanism and the magnetic attraction mechanism are used in a matched mode, impurities in liquid are isolated and filtered, then the shell, the connecting pipe and the filtering mechanism are used in a matched mode, water is supplied and washed, the problems that the filtering effect is good, disassembly and maintenance are convenient, and the impurities are quickly cleaned are solved, the problem that when an existing pipeline filtering device is used for filtering metal impurities, the metal impurities cannot be fixed, the metal impurities still move in the pipeline, the metal impurities with hard textures are damaged on the inner wall of the pipeline, and when the existing aisle filtering device is used for cleaning the filter screen, the filter screen is generally required to be disassembled, time and energy of a user are consumed frequently, and the problem of sealing the filter screen and the installation position of the filter screen can be reduced on the other hand.

Drawings

FIG. 1 is a schematic diagram of the front view of the structure of the present invention;

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

FIG. 3 is a split perspective cross-sectional view of the housing, spacer and spacing mechanism of the present invention;

FIG. 4 is a schematic perspective view of a filter mechanism and a magnetic attraction mechanism of the present invention;

FIG. 5 is a perspective view of the connecting pipe, water supply mechanism and water stop mechanism of the present invention;

FIG. 6 is a schematic perspective cross-sectional view of the case and the water stop mechanism of the present invention;

fig. 7 is a split perspective view of the driving mechanism and the water stop mechanism of the present invention.

In the figure: 1. a housing; 2. a connecting pipe; 3. a partition plate; 4. a limiting mechanism; 41. rectangular sliding grooves; 42. a limit clamping piece; 43. a limit clamping hook; 44. limiting through holes; 45. a spring; 5. a filtering mechanism; 51. a filter box; 52. a filter screen; 53. a limiting ring; 54. limiting arc grooves; 6. a magnetic attraction mechanism; 61. turbine blades; 62. an annular groove; 63. a circular groove; 64. a magnetic suction column; 65. a coil; 7. a water supply mechanism; 71. a water supply pipe; 72. a waste liquid discharge pipe; 73. a water pump; 8. a driving mechanism; 81. a driving motor; 82. a drive gear; 83. a drive toothed plate; 84. limiting sliding grooves; 9. a water stopping mechanism; 91. a spherical cavity; 92. a water-blocking ball valve; 93. a drive column; 94. a force-bearing gear; 10. a case; 11. a water supply through hole; 12. a rubber seal ring; 13. an arc-shaped groove.

Detailed Description

The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present invention are included in the protection scope of the present invention.

Embodiment one:

referring to fig. 1-7, the present invention provides a technical solution: the utility model provides a self-filtering corrosion-resistant pump valve pipeline, which comprises a housing 1, the both sides of casing 1 all communicate and are had connecting pipe 2, the top of casing 1 runs through and is provided with division board 3, the top of division board 3 is provided with stop gear 4, stop gear 4 is including the rectangle spout 41 of seting up in division board 3 top front side and rear side, the inner chamber sliding connection of rectangle spout 41 has spacing fastener 42, the front side and the rear side at casing 1 top all fixedly connected with spacing trip 43, spacing through-hole 44 with spacing trip 43 looks adaptation has been seted up to one side of rectangle spout 41 inner chamber bottom, the spring 45 has all been welded to the opposite side of two spacing fastener 42, the one end that spacing fastener 42 was kept away from to spring 45 is welded with the inner wall of rectangle spout 41, the inner chamber of division board 3 is provided with filter gear 5, filter gear 5 includes the rose box 51 that is arranged in division board 3 inner chamber, the inner chamber of rose box 51 is provided with magnetism and inhale mechanism 6, the left side of the filter box 51 is embedded with a filter screen 52, the bottom of the shell 1 is fixedly connected with a box body 10, the inner cavity of the box body 10 is provided with a driving mechanism 8, the driving mechanism 8 comprises a driving motor 81 arranged at the bottom of the box body 10, an output shaft of the driving motor 81 penetrates through the inner cavity of the box body 10 and is fixedly connected with a driving gear 82, the front side and the rear side of the inner cavity of the box body 10 are both in sliding connection with a transmission toothed plate 83, the front side and the rear side of the inner cavity of the box body 10 are both provided with limit sliding grooves 84 for the transmission toothed plate 83 to slide, the inner cavity of the connecting pipe 2 is provided with a water stopping mechanism 9, the water stopping mechanism 9 comprises a spherical cavity 91 communicated with the connecting pipe 2, the inner cavity of the spherical cavity 91 is rotationally connected with a water stopping ball valve 92, the bottom of the water stopping ball valve 92 is fixedly connected with a transmission column 93, the bottom end of the transmission column 93 penetrates through the inner cavity of the box body 10 and is rotationally connected with the inner wall of the box body 10 through a bearing, the bottom of transmission pinion rack 83 surface and be located the inner chamber fixedly connected with atress gear 94 of box 10, the front side of connecting pipe 2 is provided with water supply mechanism 7, and water supply mechanism 7 includes the delivery pipe 71 that is linked together with the spherical cavity 91 in left side, and the front side intercommunication that is located the spherical cavity 91 in right side has waste liquid discharge pipe 72, and the front side of box 10 is provided with water pump 73, and the one end that spherical cavity 91 was kept away from to delivery pipe 71 is linked together with the play water end of water pump 73.

As a preferable scheme of the present embodiment: the top of spacing trip 43 sets up to the external ramp, and one side of spacing fastener 42 bottom sets up to the internal ramp with spacing trip 43 looks adaptation, through the cooperation use of spacing trip 43 and spacing fastener 42 inclined plane for division board 3 is when driving spacing fastener 42 and slide downwards, and spacing trip 43 promotes spacing fastener 42, makes spacing fastener 42 compression spring 45 and takes place the motion, realizes spacing trip 43 and spacing fastener 42's quick block then.

As a preferable scheme of the present embodiment: the magnetic attraction mechanism 6 comprises turbine blades 61 which are rotatably connected to the inner cavity of the filter box 51, an annular groove 62 which is matched with the turbine blades 61 is formed in the inner wall of the filter box 51, and the turbine blades 61 can be fully contacted with liquid in the inner cavity of the filter box 51 through the matching use of the turbine blades 61 and the annular groove 62.

As a preferable scheme of the present embodiment: the right side of the turbine fan blade 61 is provided with a circular groove 63, the left side of the inner cavity of the circular groove 63 is fixedly connected with a magnetic suction column 64, a coil 65 is arranged on the surface of the magnetic suction column 64 in a surrounding mode, after the coil 65 is electrified, according to the principle of electricity magnetic generation, the surfaces of the magnetic suction column 64 and the turbine fan blade 61 are provided with magnetism, and metal impurities in liquid can be adsorbed.

Embodiment two:

As a preferable scheme of the present embodiment: limiting rings 53 are fixedly connected to two sides of the surface of the filter box 51, and limiting arc grooves 54 matched with the limiting rings 53 are formed in two sides of the inner wall of the isolation plate 3.

As a preferable scheme of the present embodiment: the two transmission toothed plates 83 are meshed with the driving gear 82, teeth are not distributed at the left end of the front side transmission toothed plate 83, which is close to the driving gear 82, teeth are not distributed at the right end of the rear side transmission toothed plate 83, which is close to the driving gear 82, and the single transmission toothed plate 83 can only drive the single stressed gear 94 through the arrangement of the tooth distribution positions of the transmission toothed plate 83, so that the phenomenon that the single transmission toothed plate 83 is meshed with the two stressed gears 94 simultaneously and the two stressed gears 94 rotate in the same direction is avoided.

As a preferable scheme of the present embodiment: the force receiving gear 94 on the left side is meshed with the drive toothed plate 83 on the rear side, and the force receiving gear 94 on the right side is meshed with the drive toothed plate 83 on the front side.

As a preferable scheme of the present embodiment: the water supply through holes 11 are formed in the two sides and the front side of the water blocking ball valve 92, the three water supply through holes 11 located on the same side are communicated with each other, liquid in the connecting pipe 2 can be guided through the arrangement of the water supply through holes 11, and meanwhile, the liquid flowing space between the two spherical cavities 91 can be sealed.

As a preferable scheme of the present embodiment: the left side on the surface of the filter box 51 is provided with external threads, and the left side of the inner wall of the isolation plate 3 is provided with internal threads matched with the filter box 51.

As a preferable scheme of the present embodiment: the rubber sealing rings 12 are fixedly connected to the two sides of the isolation plate 3, the arc-shaped grooves 13 matched with the rubber sealing rings 12 are formed in the two sides of the inner cavity of the shell 1, and the tightness between the isolation plate 3 and the shell 1 is enhanced through the cooperation of the rubber sealing rings 12 and the arc-shaped grooves 13, so that seepage of liquid from the isolation plate 3 to the inner wall of the shell 1 is avoided.

Working principle: when the invention is used, a user vertically inserts the isolation plate 3 from the top of the shell 1, then the limiting clamping piece 42 is contacted with the limiting clamping hook 43, at the moment, the limiting clamping piece 42 is blocked by the limiting clamping hook 43 to compress the spring 45 and move, so that the limiting clamping hook 43 is smoothly clamped into the inner cavity of the limiting through hole 44, then the limiting clamping piece 42 is not blocked, the spring 45 rebounds to push the limiting clamping piece 42 to be clamped with the limiting clamping hook 43, and at the moment, the rubber sealing ring 12 is attached to the inner wall of the arc-shaped groove 13;

in the use process, a user energizes the coil 65 to enable the surfaces of the magnetic suction column 64 and the turbine fan blades 61 to generate magnetism, when the liquid flowing from right to left in the inner cavity of the connecting pipe 2 reaches the position of the shell 1, the water flow drives the turbine fan blades 61 to rotate, so that the turbine fan blades 61 and the magnetic suction column 64 are fully contacted with the liquid, metal impurities in the liquid can be adsorbed on the surfaces of the turbine fan blades 61, other impurities in the liquid are filtered by the filter screen 52, and the impurities are retained in the inner cavity of the filter box 51;

when the impurities in the inner cavity of the filter box 51 are cleaned, a user starts the driving motor 81, the driving motor 81 drives the two transmission toothed plates 83 to move back through the driving gear 82, then the stress gear 94 drives the water blocking ball valve 92 to rotate in opposite directions through the transmission column 93, and the two water supply through holes 11 positioned on the front side are opposite, so that the flowing space of liquid between the two spherical cavities 91 is sealed;

then the coil 65 is powered off to drop metal impurities, the water pump 73 is started, the transmission column 93 extracts an external water source to supply water to the inner cavity of the connecting pipe 2, tap water washes impurities in the filter screen 52 and the inner cavity of the filter box 51 from left to right, and impurities flow out from the waste liquid discharge pipe 72;

through the operation of above step, can reach filter effect good, be convenient for dismouting and maintenance and the purpose of wasing impurity fast.

To sum up: this self-filtering corrosion-resistant pump valve pipeline uses through the cooperation of division board 3 and stop gear 4, change or overhaul filtering mechanism 5 and magnetism inhale mechanism 6, use through the cooperation of filtering mechanism 5 and magnetism inhale mechanism 6, keep apart the filtration to impurity in the liquid, use through the cooperation of water supply mechanism 7 and actuating mechanism 8 afterwards, supply water to wash casing 1, connecting pipe 2 and filtering mechanism 5, can reach filter effect good, be convenient for dismouting and maintenance and the purpose of wasing impurity fast, current pipeline filter equipment has been solved, when filtering metallic impurity, can not fix metallic impurity position for metallic impurity still can move in the pipeline, make the comparatively hard metallic impurity of texture cause the harm to the inner wall of pipeline, and current passageway filter equipment is when wasing the filter screen, generally need dismantle the filter screen, frequent dismantlement consumes user's time and energy on the one hand, on the other hand can reduce the filter screen and filter screen installation position leakproofness's problem.

It is noted that relational terms such as first and second, and the like, are 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, and further, that the terms "comprise," "include," 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.

The electrical components are all connected with an external main controller and 220V mains supply, and the main controller can be conventional known equipment for controlling a computer and the like.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a from corrosion-resistant pump valve pipeline of filtration, includes casing (1), its characterized in that: the utility model discloses a magnetic filter screen driving device, which is characterized in that connecting pipes (2) are respectively communicated with two sides of a shell (1), a separation plate (3) is arranged at the top of the shell (1), a limit mechanism (4) is arranged at the top of the separation plate (3), the limit mechanism (4) comprises a rectangular chute (41) arranged at the front side and the rear side of the top of the separation plate (3), a limit clamping piece (42) is slidingly connected with an inner cavity of the rectangular chute (41), limit clamping hooks (43) are fixedly connected with the front side and the rear side of the top of the shell (1), limit through holes (44) matched with the limit clamping hooks (43) are formed in one side of the bottom of the inner cavity of the rectangular chute (41), springs (45) are respectively welded on one side opposite to the two limit clamping pieces (42), one ends of the springs (45) away from the limit clamping pieces (42) are welded with the inner wall of the rectangular chute (41), a filter mechanism (5) is arranged in the inner cavity of the separation plate (3), the filter mechanism (5) comprises a filter box (51) arranged in the inner cavity of the separation plate (3), a magnetic filter screen driving device (52) is arranged at the bottom of the filter box (8), the driving mechanism (8) comprises a driving motor (81) arranged at the bottom of the box body (10), an output shaft of the driving motor (81) penetrates through an inner cavity of the box body (10) and is fixedly connected with a driving gear (82), a transmission toothed plate (83) is slidably connected to the front side and the rear side of the inner cavity of the box body (10), limit sliding grooves (84) for sliding the transmission toothed plate (83) are formed in the front side and the rear side of the inner cavity of the box body (10), a water stopping mechanism (9) is arranged in the inner cavity of the connecting pipe (2), the water stopping mechanism (9) comprises a spherical cavity (91) communicated with the connecting pipe (2), a water stopping ball valve (92) is rotationally connected to the inner cavity of the spherical cavity (91), a transmission column (93) is fixedly connected to the bottom of the water stopping ball valve (92), the bottom of the transmission column (93) penetrates through the inner cavity of the box body (10) and is rotationally connected with the inner wall of the box body (10) through a bearing, a limit sliding chute (84) for sliding the transmission toothed plate (83) is formed in the bottom of the surface of the transmission toothed plate (83) and is fixedly connected with the inner cavity of the box body (10), a spherical cavity (94) is communicated with the spherical cavity (91) at the left side (7) and the right side (7) of the water supplying waste liquid (7), the front side of the box body (10) is provided with a water pump (73), and one end, far away from the spherical cavity (91), of the water supply pipe (71) is communicated with the water outlet end of the water pump (73).

2. A self-filtering corrosion resistant pump valve conduit according to claim 1, wherein: the top of the limiting clamp hook (43) is provided with an outer inclined surface, and one side of the bottom of the limiting clamp piece (42) is provided with an inner inclined surface matched with the limiting clamp hook (43).

3. A self-filtering corrosion resistant pump valve conduit according to claim 1, wherein: the magnetic attraction mechanism (6) comprises turbine blades (61) rotatably connected to the inner cavity of the filter box (51), and an annular groove (62) matched with the turbine blades (61) is formed in the inner wall of the filter box (51).

4. A self-filtering corrosion resistant pump valve tubing as claimed in claim 3, wherein: the right side of the turbine fan blade (61) is provided with a circular groove (63), the left side of the inner cavity of the circular groove (63) is fixedly connected with a magnetic suction column (64), and the surface of the magnetic suction column (64) is annularly provided with a coil (65).

5. A self-filtering corrosion resistant pump valve conduit according to claim 1, wherein: limiting rings (53) are fixedly connected to two sides of the surface of the filter box (51), and limiting arc grooves (54) matched with the limiting rings (53) are formed in two sides of the inner wall of the isolation plate (3).

6. A self-filtering corrosion resistant pump valve conduit according to claim 1, wherein: the two transmission toothed plates (83) are meshed with the driving gear (82), teeth are not distributed at the left end of one side, close to the driving gear (82), of the front side transmission toothed plate (83), and teeth are not distributed at the right end of one side, close to the driving gear (82), of the rear side transmission toothed plate (83).

7. A self-filtering corrosion resistant pump valve conduit according to claim 1, wherein: the left-side force-bearing gear (94) is meshed with the rear-side transmission toothed plate (83), and the right-side force-bearing gear (94) is meshed with the front-side transmission toothed plate (83).

8. A self-filtering corrosion resistant pump valve conduit according to claim 1, wherein: both sides and the front side of the water blocking ball valve (92) are provided with water supply through holes (11), and the three water supply through holes (11) positioned on the same side are mutually communicated.

9. A self-filtering corrosion resistant pump valve conduit according to claim 1, wherein: the left side of rose box (51) surface is provided with the external screw thread, the left side of division board (3) inner wall is provided with the internal screw thread with rose box (51) looks adaptation.

10. A self-filtering corrosion resistant pump valve conduit according to claim 1, wherein: the two sides of the isolation plate (3) are fixedly connected with rubber sealing rings (12), and arc-shaped grooves (13) matched with the rubber sealing rings (12) are formed in the two sides of the inner cavity of the shell (1).