CN214077300U - Multifunctional spray head - Google Patents

Abstract

The utility model discloses a multifunctional spray head, include: an outer sleeve member; the inner sleeve is fixedly sleeved on the upper part of the inner side of the outer sleeve; a first cavity and a plurality of second cavities are formed in the inner sleeve; the decorative cover is arranged at the upper end of the outer sleeve piece, and a first nozzle opening and at least one second nozzle opening are embedded in the decorative cover; the lotus nozzle assembly is arranged in the first cavity; at least one additional nozzle assembly, each additional nozzle assembly mounted within a second cavity; the water distribution seat is fixedly arranged at the lower end of the inner sleeve; and a connecting seat, an upper end of which is rotatably installed at a lower portion of an inner side of the outer sleeve member, and a lower end of which is operatively connected with an external water supply line. By applying the utility model, the nozzles with different specifications can be quickly switched, the use is convenient, and more stable high-pressure water flow can be generated; just the utility model discloses simple structure, easily production.

Description

Multifunctional spray head

Technical Field

The utility model relates to a high pressure cleaner technical field especially relates to a multifunctional nozzle.

Background

The high-pressure cleaning machine is a common cleaning device, and the conventional high-pressure cleaning machine mainly washes the surface of an object by generating high-pressure water flow through a power device matched with a high-pressure plunger pump so as to quickly peel off dirt on the surface of the object and wash away the dirt; with the continuous development of technology, cold water high pressure cleaners, hot water high pressure cleaners, motor-driven high pressure cleaners, and the like have been developed. In the in-service use process, in order to make high pressure cleaner spun rivers accord with all kinds of application occasions, often adjust the shape of spun rivers through the shower nozzle of the different specifications of washing spray tube end installation at high pressure cleaner, nevertheless replace the inconvenience that the shower nozzle is very repeatedly in actual operation, and the rivers that common rotation switching shower nozzle produced often are not stable enough yet.

SUMMERY OF THE UTILITY MODEL

In view of the above, in order to solve the above problems, an object of the present invention is to provide a multifunctional shower head, including:

the outer sleeve part is of a hollow sleeve body structure with an upper opening and a lower opening;

the inner sleeve is fixedly sleeved on the upper part of the inner side of the outer sleeve;

a first cavity and a plurality of second cavities are formed in the inner sleeve, the upper end and the lower end of the first cavity penetrate through the inner sleeve, and the upper end and the lower end of each second cavity penetrate through the inner sleeve;

the decorative cover is arranged at the upper end of the outer sleeve piece, an opening of the decorative cover at the upper end of the outer sleeve piece is matched, a first nozzle opening and at least one second nozzle opening are embedded in the decorative cover, the first nozzle opening is over against the upper end of the first cavity, and each second nozzle opening is over against the upper end of one second cavity;

the nozzle assembly is arranged in the first cavity, and the upper end of the nozzle assembly is opposite to the first nozzle opening;

at least one additional nozzle assembly, wherein each additional nozzle assembly is arranged in one second cavity, and the upper end of each additional nozzle assembly is opposite to the second nozzle opening;

the water distribution seat is fixedly arranged at the lower end of the inner sleeve piece, and is fixedly sleeved in the middle of the inner side of the outer sleeve piece;

a connecting seat having an upper end rotatably mounted to a lower portion of an inner side of the casing member and a lower end operatively connected to an external water supply line.

In another preferred embodiment, the nozzle assembly comprises: bowl form structure, nozzle, rotator, weight, rotatory cap and divide the water ring, bowl form structure fixed mounting in the upper end of first cavity, bowl form structure is in pairs first nozzle mouth sets up, the nozzle set up in bowl form structure's lower extreme, the rotator install in the lower extreme of nozzle, the weight install in the lower extreme of rotator, rotatory cap install in the lower extreme of weight, divide the water ring install in the lower extreme of first cavity, the lower extreme of rotatory cap support in divide on the water ring, the upper portion of the inboard of first cavity is formed with a toper inner wall, one side of rotator support in on the toper inner wall.

In another preferred embodiment, the additional nozzle assembly comprises: the nozzle piece is arranged on the upper portion of the second cavity, the nozzle piece is opposite to the second nozzle opening, the vertical spray pipe is arranged on the lower portion of the second cavity, and the upper end of the vertical spray pipe is connected with the lower end of the nozzle piece.

In another preferred embodiment, a water stabilizing member is installed at a middle portion of the vertical nozzle, and the water stabilizing member includes: the pipe body and set up the filter screen in the pipe body, evenly arranged a plurality of water holes of crossing on the filter screen.

In another preferred embodiment, the upper end of the water diversion seat protrudes upwards to form a first joint and at least one second joint, the first joint is connected with the lower end of the first cavity, each second joint is connected with the lower end of one second cavity, the first joint is provided with a first water inlet hole along the vertical direction, the first water inlet hole penetrates through the water diversion seat, the second joint is provided with a second water inlet hole along the vertical direction, and the second water inlet hole penetrates through the water diversion seat.

In another preferred embodiment, a water inlet pipeline is disposed in the connecting base, an upper end of the water inlet pipeline is disposed through one side of the upper end of the connecting base, the upper end of the water inlet pipeline is operatively connected with a lower end of the first water inlet hole or a lower end of the second water inlet hole, the lower end of the water inlet pipeline is disposed through the lower end of the connecting base, and the lower end of the water inlet pipeline is connected with the water supply pipeline.

In another preferred embodiment, the connection seat includes a rotation portion and a connection portion, the rotation portion is rotatably mounted on a lower portion of an inner side of the outer sleeve, the connection portion is disposed at a lower end of the rotation portion, an outer contour of the rotation portion in a horizontal direction is larger than an outer contour of the connection portion in the horizontal direction, an upper end of the water inlet pipeline is disposed through an upper end of the rotation portion, and a lower end of the water inlet pipeline is disposed through a lower end of the connection portion.

In another preferred embodiment, the lower end of the connecting part is provided with a first hole groove from bottom to top, a first pipeline is formed in the first hole groove, a second hole groove is formed in one side of the rotating part along the horizontal direction, the middle part of the lower end of the second hole groove is communicated with the upper end of the first hole groove, and a plug is embedded in the open end of the second hole groove, a second pipeline is formed in the second hole groove, the upper end of the rotating part is provided with a third hole groove from top to bottom, the lower end of the third hole groove is communicated with the closed end of the second hole groove, a third pipeline is formed inside the third hole groove, and the third hole groove is operable to face the first water inlet hole or the second water inlet hole, and the first pipeline, the second pipeline and the third pipeline are sequentially connected to form the water inlet pipeline.

In another preferred embodiment, the method further comprises: the rotary part is arranged on the outer sleeve piece, a groove is formed in one side of the rotary part along the radial direction, one end of the spring is fixedly connected with the bottom of the groove, the other end of the spring is connected with the stop block, a plurality of clamping grooves are formed in the lower portion of the inner wall of the outer sleeve piece along the circumferential direction, and the stop block is operatively clamped in the clamping grooves.

In another preferred embodiment, the method further comprises:

the first sealing ring is arranged at the lower end of the connecting seat;

the second sealing ring is arranged on the inner side of the plug;

the third sealing ring is arranged at the upper end of each second joint;

the fourth sealing ring is arranged at the upper end of the connecting seat;

the fifth sealing ring is arranged at the upper end of the first joint;

and the sixth sealing ring is arranged at the upper end of the third hole groove.

The utility model discloses owing to adopted above-mentioned technical scheme, make it compare the positive effect that has with prior art to be: by applying the utility model, the nozzles with different specifications can be quickly switched, the use is convenient, and more stable high-pressure water flow can be generated; just the utility model discloses simple structure, easily production.

Drawings

Fig. 1 is a schematic view of a multifunctional spray head of the present invention;

fig. 2 is a sectional view of a multifunctional nozzle of the present invention;

fig. 3 is a schematic view of a decoration cover of a multifunctional nozzle of the present invention;

fig. 4 is a schematic view of the installation of the sealing ring of the multifunctional nozzle of the present invention.

In the drawings:

1. an outer sleeve member; 2. an inner sleeve member; 3. a decorative cover; 31. a first nozzle opening; 32. a second nozzle opening; 4. a nozzle assembly; 5. an additional nozzle assembly; 6. a water distribution seat; 7. a connecting seat; 41. a bowl-shaped structure; 42. a nozzle; 43. a rotating body; 44. a counterweight; 45. rotating the cap; 46. a water diversion ring; 51. a vertical nozzle; 52. a nozzle member; 53. a water stabilizing member; 61. a first joint; 62. a second joint; 63. a first water inlet hole; 64. a second water inlet hole; 73. a water inlet pipeline; 71. a rotating part; 72. a connecting portion; 74. A first hole groove; 75. a second hole groove; 76. a plug; 77. a third hole groove; 78. a stopper; 79. a spring; 80. a card slot; 91. a first seal ring; 92. a second seal ring; 93. a third seal ring; 94. a fourth seal ring; 95. a fifth seal ring; 96. a sixth seal ring; 97. and identifying the block.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments, but the present invention is not limited thereto.

As shown in fig. 1 to 4, there is shown a multi-functional head according to a preferred embodiment, including: the outer sleeve part 1 is of a hollow sleeve body structure with an upper opening and a lower opening; the inner sleeve member 2 is fixedly sleeved on the upper part of the inner side of the outer sleeve member 1; a first cavity and a plurality of second cavities are formed in the inner sleeve 2, the upper end and the lower end of the first cavity are arranged to penetrate through the inner sleeve 2, and the upper end and the lower end of each second cavity are arranged to penetrate through the inner sleeve 2; the decorative cover 3 is arranged at the upper end of the outer sleeve member 1, the decorative cover 3 is matched with an opening at the upper end of the outer sleeve member 1, a first nozzle opening 31 and at least one second nozzle opening 32 are embedded in the decorative cover 3, the first nozzle opening 31 is over against the upper end of the first cavity, and each second nozzle opening 32 is over against the upper end of one second cavity; the nozzle 42 assembly 4, the nozzle 42 assembly 4 is arranged in the first cavity, and the upper end of the nozzle 42 assembly 4 is opposite to the first nozzle opening 31; at least one additional nozzle assembly 5, wherein each additional nozzle assembly 5 is arranged in a second cavity, and the upper end of each additional nozzle assembly 5 is opposite to the second nozzle opening 32; the water distribution seat 6 is fixedly arranged at the lower end of the inner sleeve member 2, and the water distribution seat 6 is fixedly sleeved in the middle of the inner side of the outer sleeve member 1; and a connecting seat 7, an upper end of which 7 is rotatably installed at a lower portion of an inner side of the outer casing member 1, and a lower end of which 7 is operatively connected with an external water supply line. Further, the outer sleeve member 1 is used as a foundation for installing the internal structure of the whole multifunctional spray head, the inner sleeve member 2 is fixedly connected with the outer sleeve member 1, the decorative cover 3 can be screwed at the upper end of the outer sleeve member 1 through a thread structure, and is fixedly connected with the inner sleeve member 2 through the water distribution seat 6 and provides a foundation for the nozzle 42 assembly 4 and the plurality of additional nozzle assemblies 5 to be respectively and correspondingly connected with the water inlet pipeline 73 in the connecting seat 7, specifically, the water inlet pipeline 73 is enabled to be operatively communicated with the nozzle 42 assembly 4 or one of the additional nozzle assemblies 5 through the rotation of the connecting seat 7, so that high-pressure water flows of different types are sprayed out; in another preferred embodiment, a three additional nozzle assembly 5 and one nozzle 42 assembly 4 mounting scheme may be employed.

Further, as a preferred embodiment, the nozzle 42 assembly 4 includes: bowl-shaped structure 41, nozzle 42, rotator 43, counter weight 44, rotatory cap 45 and divide water ring 46, bowl-shaped structure 41 fixed mounting is in the upper end of first cavity, bowl-shaped structure 41 sets up to first nozzle mouth 31 in pairs, nozzle 42 sets up in the lower extreme of bowl-shaped structure 41, rotator 43 is installed in the lower extreme of nozzle 42, counter weight 44 is installed in the lower extreme of rotator 43, rotatory cap 45 is installed in the lower extreme of counter weight 44, divide water ring 46 to install in the lower extreme of first cavity, the lower extreme of rotatory cap 45 supports on dividing water ring 46, the upper portion of the inboard of first cavity is formed with a toper inner wall, one side of rotator 43 supports on the toper inner wall.

Further, as a preferred embodiment, the additional nozzle assembly 5 includes: the vertical spray pipe 51 and the nozzle piece 52, the nozzle piece 52 sets up in the upper portion of second cavity, and the nozzle piece 52 just sets up second nozzle opening 32, and the vertical spray pipe 51 sets up in the lower part of second cavity, and the upper end of vertical spray pipe 51 is connected with the lower extreme of nozzle piece 52. Further, the nozzle member 52 may preferably employ a 30 ° fan-shaped flat nozzle or a 60 ° fan-shaped flat nozzle as well as a linear nozzle assembly.

Further, as a preferred embodiment, a water stabilizing member 53 is installed at the middle portion of the vertical nozzle 51, and the water stabilizing member 53 includes: the body and set up the filter screen in the body, evenly arranged a plurality of water holes of crossing on the filter screen. Further, the disordered water flow is cut apart through the filter screen and is converged into stable water flow again at the other side of the filter screen, and the influence of the bending of the water inlet pipeline 73 on the stability of the water flow is avoided.

Further, as a preferred embodiment, the upper end of the water diversion seat 6 protrudes upward to form a first joint 61 and at least one second joint 62, the first joint 61 is connected with the lower end of the first cavity, each second joint 62 is connected with the lower end of a second cavity, the first joint 61 has a first water inlet 63 along the vertical direction, the first water inlet 63 penetrates through the water diversion seat 6, the second joint 62 has a second water inlet 64 along the vertical direction, and the second water inlet 64 penetrates through the water diversion seat 6. Further, the air conditioner is provided with a fan,

further, as a preferred embodiment, a water inlet pipeline 73 is disposed in the connecting base 7, an upper end of the water inlet pipeline 73 is disposed through one side of an upper end of the connecting base 7, the upper end of the water inlet pipeline 73 is operatively connected with a lower end of the first water inlet 63 or a lower end of the second water inlet 64, the lower end of the water inlet pipeline 73 is disposed through a lower end of the connecting base 7, and the lower end of the water inlet pipeline 73 is connected with the water supply pipeline.

The above description is only an example of the preferred embodiments of the present invention, and the embodiments and the protection scope of the present invention are not limited thereby.

The utility model discloses still have following embodiment on above-mentioned basis:

in a further embodiment of the present invention, the connecting base 7 includes a rotating portion 71 and a connecting portion 72 which are an integral structure, the rotating portion 71 is rotatably mounted on the lower portion of the inner side of the outer sleeve member 1, the connecting portion 72 is disposed at the lower end of the rotating portion 71, the outer contour of the rotating portion 71 in the horizontal direction is larger than the outer contour of the connecting portion 72 in the horizontal direction, the upper end of the water inlet pipe 73 is disposed to penetrate through the upper end of the rotating portion 71, and the lower end of the water inlet pipe 73 is disposed to penetrate through the lower end of the connecting portion 72. Further, the air conditioner is provided with a fan,

the utility model discloses a further embodiment, a first hole groove 74 has been seted up by lower extreme of connecting portion 72 from bottom to top, the inside of first hole groove 74 forms first pipeline, a second hole groove 75 has been seted up along the horizontal direction in one side of rotating part 71, the middle part of the lower extreme of second hole groove 75 is linked together with the upper end of first hole groove 74, and the open one end of being of second hole groove 75 inlays and is equipped with an end cap 76, the inside of second hole groove 75 forms the second pipeline, a third hole groove 77 has been seted up from top to bottom to the upper end of rotating part 71, the lower extreme of third hole groove 77 is confined one end with second hole groove 75 and is linked together, the inside of third hole groove 77 forms the third pipeline, and third hole groove 77 is operable just to first inlet opening 63 or second inlet opening 64, the first pipeline, the second pipeline and third pipeline connect gradually and form inlet channel 73. Further, the air conditioner is provided with a fan,

the utility model discloses a further embodiment, still include: the rotating part 71 comprises a stop 78 and a spring 79, wherein one side of the rotating part 71 is radially provided with a groove, one end of the spring 79 is fixedly connected with the bottom of the groove, the other end of the spring 79 is connected with the stop 78, the lower part of the inner wall of the outer sleeve part 1 is annularly provided with a plurality of clamping grooves 80, and the stop 78 is operatively clamped in the clamping grooves 80. Further, the groove provides a basis for the movement and installation of the stopper 78, and the stopper 78 is made to move inward by compressing the spring 79 when being pressed by the inner wall of the outer sleeve member 1, and then to pop out and be clamped in the clamping groove 80 under the action of the spring 79 when reaching the corresponding clamping groove 80, wherein one side of the stopper 78 close to the clamping groove 80 is preferably arc-shaped, and preferably four clamping grooves 80 are provided so that four clamping grooves 80 are respectively provided corresponding to three additional nozzle assemblies 5 and one nozzle assembly 4.

The utility model discloses a further embodiment, still include:

the first sealing ring 91, the first sealing ring 91 is mounted on the lower end of the connecting seat 7; furthermore, the lower end of the connecting base 7 is connected with an external water supply pipeline, the sealing performance is good, specifically, the inner edge of the first sealing ring and a joint formed by the lower end of the connecting base 7 are annularly mounted in a matched mode, and the outer edge of the first sealing ring abuts against the joint of the connecting base 7 and the water supply pipeline.

A second seal ring 92, wherein the second seal ring 92 is mounted on the inner side of the plug 76; further, the inside of the second hole 75 has good sealing performance, and specifically, one side of the second sealing ring 92 is fixed on the plug 76, and the outer edge of the second sealing ring 92 is in close contact with the inner wall of the second hole 75 to form a seal.

A third sealing ring 93, wherein the third sealing ring 93 is arranged at the upper end of each second joint 62; further, the second joint 62 is well sealed to the lower end of an additional nozzle assembly 5 by a third sealing ring 93.

A fourth sealing ring 94, wherein the fourth sealing ring 94 is arranged at the upper end of the connecting seat 7; further, the fourth sealing ring 94 provides good sealing performance when the connecting base 7 rotates relative to the outer sleeve member 1, specifically, the inner edge of the fourth sealing ring 94 is fixed annularly to the upper end of the connecting base 7, and the outer edge of the fourth sealing ring 94 is in close contact with the inner wall of the outer sleeve member 1.

A fifth packing 95, the fifth packing 95 being mounted on the upper end of the first joint 61; further, the first joint 61 is brought into close contact with the lower end of the nozzle 42 assembly 4 by a fifth packing 95 to form a seal.

And a sixth packing 96, the sixth packing 96 being mounted to an upper end of the third orifice groove 77. Further, a good seal is formed at the water flow passing position between the water diversion seat 6 and the connecting seat 7 through the sixth sealing ring 96.

The utility model discloses a further embodiment, still include: the upper part of the outer wall of the outer sleeve member 1 protrudes outwards in the radial direction to form the above-mentioned mark blocks 97, and each mark block 97 is respectively arranged corresponding to the nozzle 42 assembly 4 or the additional nozzle assembly 5 and is arranged in different shapes so that a user can conveniently and directly screw the outer sleeve member 1 to adjust the selection of the nozzle.

The above description is only an example of the preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and those skilled in the art should be able to realize the equivalent alternatives and obvious variations of the present invention.

Claims (10)

1. A multi-function spray head, comprising:

the outer sleeve part is of a hollow sleeve body structure with an upper opening and a lower opening;

the inner sleeve is fixedly sleeved on the upper part of the inner side of the outer sleeve;

a first cavity and a plurality of second cavities are formed in the inner sleeve, the upper end and the lower end of the first cavity penetrate through the inner sleeve, and the upper end and the lower end of each second cavity penetrate through the inner sleeve;

the decorative cover is arranged at the upper end of the outer sleeve piece, an opening of the decorative cover at the upper end of the outer sleeve piece is matched, a first nozzle opening and at least one second nozzle opening are embedded in the decorative cover, the first nozzle opening is over against the upper end of the first cavity, and each second nozzle opening is over against the upper end of one second cavity;

the nozzle assembly is arranged in the first cavity, and the upper end of the nozzle assembly is opposite to the first nozzle opening;

at least one additional nozzle assembly, wherein each additional nozzle assembly is arranged in one second cavity, and the upper end of each additional nozzle assembly is opposite to the second nozzle opening;

the water distribution seat is fixedly arranged at the lower end of the inner sleeve piece, and is fixedly sleeved in the middle of the inner side of the outer sleeve piece;

a connecting seat having an upper end rotatably mounted to a lower portion of an inner side of the casing member and a lower end operatively connected to an external water supply line.

2. The multifunction spray head of claim 1, wherein said nozzle assembly comprises: bowl form structure, nozzle, rotator, weight, rotatory cap and divide the water ring, bowl form structure fixed mounting in the upper end of first cavity, bowl form structure is in pairs first nozzle mouth sets up, the nozzle set up in bowl form structure's lower extreme, the rotator install in the lower extreme of nozzle, the weight install in the lower extreme of rotator, rotatory cap install in the lower extreme of weight, divide the water ring install in the lower extreme of first cavity, the lower extreme of rotatory cap support in divide on the water ring, the upper portion of the inboard of first cavity is formed with a toper inner wall, one side of rotator support in on the toper inner wall.

3. The multi-functional spray head of claim 1, wherein said additional nozzle assembly comprises: the nozzle piece is arranged on the upper portion of the second cavity, the nozzle piece is opposite to the second nozzle opening, the vertical spray pipe is arranged on the lower portion of the second cavity, and the upper end of the vertical spray pipe is connected with the lower end of the nozzle piece.

4. The multifunctional spray head of claim 3 wherein a water stabilizing member is installed at the middle portion of the vertical spray pipe, the water stabilizing member comprising: the pipe body and set up the filter screen in the pipe body, evenly arranged a plurality of water holes of crossing on the filter screen.

5. The multifunctional sprayer according to claim 1, wherein a first joint and at least one second joint are formed at the upper end of the water diversion seat in an upward protruding manner, the first joint is connected with the lower end of the first cavity, each second joint is connected with the lower end of one second cavity, the first joint is provided with a first water inlet along the vertical direction, the first water inlet penetrates through the water diversion seat, the second joint is provided with a second water inlet along the vertical direction, and the second water inlet penetrates through the water diversion seat.

6. The multifunctional spray head according to claim 5, wherein a water inlet pipe is provided in the connecting base, an upper end of the water inlet pipe is disposed through one side of the upper end of the connecting base, the upper end of the water inlet pipe is operatively connected with a lower end of the first water inlet hole or a lower end of the second water inlet hole, the lower end of the water inlet pipe is disposed through the lower end of the connecting base, and the lower end of the water inlet pipe is connected with the water supply pipe.

7. The multi-functional spray head according to claim 6, wherein the connection holder includes a rotation part and a connection part in an integrated structure, the rotation part is rotatably installed at a lower portion of an inner side of the outer casing member, the connection part is provided at a lower end of the rotation part, an outer contour of the rotation part in a horizontal direction is larger than an outer contour of the connection part in the horizontal direction, an upper end of the water inlet pipe is provided through an upper end of the rotation part, and a lower end of the water inlet pipe is provided through a lower end of the connection part.

8. The multifunctional nozzle as claimed in claim 7, wherein the lower end of the connecting portion is formed with a first hole groove from bottom to top, a first pipeline is formed in the first hole groove, a second hole groove is formed in one side of the rotating part along the horizontal direction, the middle part of the lower end of the second hole groove is communicated with the upper end of the first hole groove, and a plug is embedded in the open end of the second hole groove, a second pipeline is formed in the second hole groove, the upper end of the rotating part is provided with a third hole groove from top to bottom, the lower end of the third hole groove is communicated with the closed end of the second hole groove, a third pipeline is formed inside the third hole groove, and the third hole groove is operable to face the first water inlet hole or the second water inlet hole, and the first pipeline, the second pipeline and the third pipeline are sequentially connected to form the water inlet pipeline.

9. The multi-functional spray head according to claim 7, characterized by further comprising: the rotary part is arranged on the outer sleeve piece, a groove is formed in one side of the rotary part along the radial direction, one end of the spring is fixedly connected with the bottom of the groove, the other end of the spring is connected with the stop block, a plurality of clamping grooves are formed in the lower portion of the inner wall of the outer sleeve piece along the circumferential direction, and the stop block is operatively clamped in the clamping grooves.

10. The multi-functional sprinkler according to claim 8, further comprising:

the first sealing ring is arranged at the lower end of the connecting seat;

the second sealing ring is arranged on the inner side of the plug;

the third sealing ring is arranged at the upper end of each second joint;

the fourth sealing ring is arranged at the upper end of the connecting seat;

the fifth sealing ring is arranged at the upper end of the first joint;

and the sixth sealing ring is arranged at the upper end of the third hole groove.

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