WO2013143428A1

WO2013143428A1 - Drainage mechanism

Info

Publication number: WO2013143428A1
Application number: PCT/CN2013/073122
Authority: WO
Inventors: 李飞宇; 吴爱民; 许海涛
Original assignee: Li Feiyu
Priority date: 2012-03-30
Filing date: 2013-03-25
Publication date: 2013-10-03

Abstract

A drainage mechanism comprises a box body (1), a guide rod (2), a first piston (3), a first piston-loaded spring (4), a second piston (5) and a second piston-loaded spring (6). An embedded sleeve (7) capable of sliding vertically along an axial part of the second piston is arranged between the second piston (5) and a box bottom (1-2). A circular external sealing cavity (5-3) is formed between the second piston (5), the embedded sleeve (7) and the box bottom (1-2). The circular external sealing cavity (5-3) is communicated with or sealed with a water outlet through movement of the embedded sleeve (7). The first piston (3) is provided with a first acting element (3-2) and the embedded sleeve (7) is provided with a second acting element (7-2) interacting with the first acting element (3-2). The first acting element (3-2) and the second acting element (7-2) interact with each other to realize movement of the embedded sleeve (7). By means of the above solution, relative displacement and seal sequence of a large seal ring (5-1) on the second piston (5) and a small seal ring (7-1) can be controlled without utilizing compressive deformation of the large and small seal rings, so that the drainage stability of the drainage mechanism is enhanced.

Description

Drainage mechanism

Technical field

The present invention relates to a drainage mechanism for flushing dirt and/or sewage, and more particularly to a split drainage mechanism suitable for flushing sanitary equipment such as a flush toilet.

Background technique

A flushing mechanism disclosed in Chinese Patent Application No. CN201010252463.9, characterized in that it has a first piston and a second piston sealing assembly, the second piston sealing assembly comprising a large sealing ring at the outer periphery of the bottom portion thereof and a small seal ring of the central portion, the lower end of the first piston has an annular protrusion, the annular protrusion being capable of contacting a large seal ring of the second piston seal assembly, the ring being closed when the first piston slides downward The protrusion can pre-compress and deform the large seal ring of the second piston seal assembly, and the large seal ring of the second piston seal assembly is sealed by the small seal ring of the second piston seal assembly due to the pre-compression bending deformation To achieve the functionality of this component. The disadvantage of the structure is that the relative distance between the large sealing ring and the small sealing ring of the second piston sealing assembly is very strict, and the relative distance changes by the deformation of the large and small rubber pads during the water inlet and the drainage process, the two kinds of sealing The relative tolerance range of the relative hardness and elastic force of the ring is very high, resulting in a deviation of the sealing sequence of the second piston sealing assembly during the implementation process, resulting in failure of water inlet or drainage.

Summary of the invention

In order to solve the technical problems existing in the prior art, the present invention provides a split type drainage mechanism. The split type drainage mechanism allows the large sealing ring and the inner nesting tube (or the small sealing ring on the inner nesting tube) to be respectively mounted on different components, and during the inflow and drainage process, relative motion is generated to achieve different The different requirements of the sealing space on the sealing degree and the sealing timing not only enable the split type drainage mechanism of the present invention to stably realize the water inlet and the drainage, and the components of the drainage mechanism are not easily damaged, and the service life is greatly prolonged.

The invention solves the above technical problem, and the technical solution adopted is to provide a drainage mechanism, comprising a box body (1) having a box wall (1-1) and a box wall (1- 1) Connected bottom (1-2), at the bottom of the box (1-2), a water outlet for connecting the flushing line; a first piston (3), the first piston (3) in the box (1) The inside can be sealed sliding up and down along the tank wall (1-1), and the first piston (3) divides the inner chamber of the tank (1) into an upper chamber (1-3) and a lower chamber (1-4) a first piston loading spring (4) that applies an elastic force to the first piston (3) to drive the first piston (3) to move downward; a second piston ( 5), the second piston (5) A large sealing ring (5-1) is disposed on the outer peripheral wall of the bottom, the second piston (5) is located between the first piston (3) and the bottom of the tank (1-2), and the second piston (5) is in the casing ( 1) can slide up and down; a second piston loading spring (6) for applying an elastic force to the second piston (5) to drive the second piston (5) to move upward Between the second piston (5) and the bottom of the tank (1-2) is provided with an inner nesting tube (7) which can slide up and down along the axial portion of the second piston (5); the second piston (5), the inner An annular outer sealing cavity (5-3) is formed between the nesting tube (7) and the bottom of the box (1-2), and the annular sealing chamber (5-3) is realized by the movement of the inner nesting tube (7) and the water outlet Connected or closed; the first piston (3) is provided with a first active element (3-2), and the inner nested tube (7) is provided with a second active element interacting with the first active element (3-2) (7-2), the interaction of the first acting element (3-2) with the second acting element (7-2) to effect movement of the inner nesting tube (7).

As a preferred embodiment of the invention, the inner nesting tube (7) is provided with a small sealing ring (7-1) which moves with the inner nesting tube (7) and serves to seal the bottom (1-2) of the tank.

As a preferred embodiment of the invention, the first piston (3) moves downward, and the first sealing element (3) is sealed before the large sealing ring (5-1) on the second piston (5) and the bottom of the tank (1-2) are sealed. - 2) interacting with the second active element (7-2) to move the inner nesting tube (7) upward, thereby connecting the annular outer sealing chamber (5-3) to the water outlet and draining; the first piston (3) Moving upward, the inner nesting tube (7) moves downward, thereby sealing the annular outer sealing chamber (5-3) from the water outlet.

As a preferred embodiment of the present invention, a return spring (7-3) is provided between the second piston (5) and the inner nesting tube (7) for causing the inner nesting tube (7) to move downward; the first piston (3) moving downward, the first acting element (3-2) interacts with the second acting element (7-2) to move the inner nesting tube (7) upward and compress the return spring (7-3); A piston (3) moves upward, the return spring (7-3) resets and pushes the inner nesting tube (7) downward.

As a preferred embodiment of the present invention, one of the first active element (3-2) and the second active element (7-2) is a magnetic element made of a magnetic material, and the other is made of a magnetic material. A magnetic element or a metal element made of a metal material, the first active element (3-2) and the second active element (7-2) are attracted to each other.

As a preferred embodiment of the present invention, the first active element (3-2) is a first plunger (3-2-2) disposed at the bottom of the first piston (3), and the second active element (7- 2) is a lever structure (7-2-1) fixed to the second piston (5), the second side of the lever structure (7-2-1) extends downwardly from the second plunger (7-2- 2) and the second plunger (7-2-2) is connected to the inner nesting tube (7), and the first plunger (3-2-2) moves the lever structure (7-2- The first side of 1) is pressed down so that the second plunger (7-2-2) drives the inner nesting tube (7) upward.

As a preferred embodiment of the present invention, the first plunger (3-2-2) The lever structure (7-2-1) can be detached as the first piston (3) moves upward.

As a preferred embodiment of the invention, the first side of the lever structure (7-2-1) is provided with a socket (6-2-2) for accommodating the first plunger (3-2-2).

As a preferred embodiment of the present invention, the first acting element (3-2) is a first rack (3-2-2') disposed at the bottom of the first piston (3), and the second acting element (7) -2) is a gear structure (7-2-1') fixed to the second piston (5), one side of the gear structure (7-2-1') extending downwardly from the second rack (7) -2-2') and the second rack (7-2-2') is fixed to the inner nesting tube (7), and the first rack (3-2-2') is meshed when moving downward The gear structure (7-2-1') is rotated to cause the second rack (7-2-2') to move the inner nesting tube (7) upward.

As a preferred aspect of the invention, the first rack (3-2-2') can be disengaged from the gear structure (7-2-1') as the first piston (3) moves upward.

Compared with the prior art, the above technical solutions described in the present invention have the following beneficial effects:

(1) The split type drainage mechanism of the present invention is used to realize that the large seal ring of the first piston, the second piston and the bottom of the tank is sealed with the inner nested tube (or the small seal ring on the inner nested tube) On the component, the relative displacement of the large sealing ring and the small sealing ring and the sealing timing can be controlled without using the material properties of the large sealing ring and the small sealing ring (such as compression deformation), thereby enhancing the drainage. The stability of the body drain and the extended life of the large and small seals.

(2) In order to achieve mutual linkage between the first piston and the inner nesting tube, a first acting element is disposed on the first piston, and a second active element is disposed on the inner nesting tube, and the first active element Interacting with the second active element ultimately results in relative movement between the large seal and the small seal.

(3) When the first acting element and the second acting element are in an inactive state, the inner nesting tube is subjected to the elastic force of the return spring, so that the small sealing ring and the water outlet are normally closed. The stability of the second piston starting is further ensured.

(4) The first plunger is provided with a socket for receiving the first plunger. When the first plunger acts on the lever structure, the first plunger can accurately achieve the mutual force, thereby ensuring the stability performance of the drainage mechanism of the present invention.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

Figure 1 is a schematic view showing the first embodiment of the split type drainage mechanism of the present invention in an initial state;

Figure 2 is an enlarged schematic view of a portion A shown in Figure 1;

Figure 3 is a schematic view showing the first embodiment of the split type drainage mechanism of the present invention and in a water inlet state;

Figure 4 is a schematic view showing the first embodiment of the split type drainage mechanism of the present invention in a drained state;

Figure 5 is a second schematic view of the first embodiment of the split type drainage mechanism of the present invention and in a drained state;

Figure 6 is a schematic view showing a second embodiment of the split type drainage mechanism of the present invention;

Figure 7 is an enlarged schematic view of a portion B shown in Figure 6;

Figure 8 is a schematic view showing a third embodiment of the split type drainage mechanism of the present invention;

Fig. 9 is an enlarged schematic view showing a portion C shown in Fig. 8.

detailed description

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments, in order to make the present invention. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Embodiment 1

As shown in FIG. 1 and FIG. 2, the split type drainage mechanism of the present invention comprises a box body 1, a guide rod 2, a first piston 3, and a first piston loading spring 4; wherein the box body 1 has a box connected to each other. The wall 1-1 and the bottom 1-2, the box wall 1-1 is integrally formed or integrated with the bottom 1-2, the box wall 1-1 defines a cylindrical structure, and the guide rod 2 follows the axis in the box 1 is fixed in the axial direction, A water outlet for connecting a flushing line (not shown) is provided around the bottom 1-1 of the box bottom 1-1. The guide rod 2 includes a screw and a nut, and the nut defines an axial screw hole into which the screw can be screwed; the first piston 3 can be sealed and slid along the axial direction of the guide rod 2. The first piston 3 divides the inner chamber of the casing 1 into an upper chamber 1-3 and a lower chamber 1-4, the lower chamber 1-4 contacts the bottom 1-2, and the upper chamber 1-3 Opposite the lower chamber 1-4. The first piston 3 includes an upper portion of the piston and a bottom portion of the piston. The upper portion of the piston extends upward in the axial direction and has a hollow cylindrical structure. The upper portion of the piston is mounted on the outer wall of the guide rod 2. The outer diameter of the bottom portion of the piston is slightly smaller than the inner diameter of the tank wall 1-1. The bottom of the piston is slidable up and down along the inner wall of the tank wall 1-1; preferably, the first piston loading spring 4 is mounted around the guide rod 2, and an elastic force is applied to the first piston 3 to drive the first piston 3 to move downward. Thereby, the volume of the lower chamber 1-4 is reduced and the volume of the upper chamber 1-3 is enlarged.

As shown in FIG. 1 and FIG. 2, the split type drainage mechanism of the present invention further includes a second piston 5 and a second piston loading spring 6; the second piston 5 can be sealed and slid on the guide rod 2 in the axial direction, the first Two pistons 5 A large seal ring 5-1 is provided on the outer peripheral wall of the bottom, and the second piston 5 is located between the first piston 3 and the bottom 1-2 of the tank. The second piston 5 also includes an upper portion of the piston and a bottom portion of the piston. The upper portion of the piston has a hollow cylindrical structure and is sleeved on the outer peripheral wall of the guide rod 2. The piston seals and slides on the guide rod 2 in the axial direction; the second piston is loaded around the spring 6 The guide rod 2 is mounted for applying an elastic force to the second piston 5 to drive the second piston 5 to move upward.

As shown in Figure 1, Figure 2, An inner nesting tube 7 is slidable between the second piston 5 and the bottom 1-2 of the second piston 5, and a small sealing ring 7-1 may be disposed on the outer peripheral wall of the inner bottom of the inner nesting tube 7. . An annular outer sealing cavity 5-3 is formed between the inner nesting tube 7, the second piston 5 and the bottom 1-2, The annular seal chamber 5-3 is connected or closed to the water outlet by the movement of the inner nest tube 7. The first piston 3 is provided with a first active element 3-2, and the inner nesting tube 7 is provided with a second active element 7-2 that interacts with the first active element 3-2. The interaction of the first active element 3-2 with the second active element 7-2 to effect movement of the inner nested tube 7. A return spring 7-3 that causes the inner nested tube 7 to tend to move downward may be provided between the inner nesting tube 7 and the second piston 5. The inner nesting tube 7 is provided with a small sealing ring 7-1 which moves with the inner nesting tube 7 and serves to seal the bottom 1-2. In this embodiment, one of the first active element 3-2 and the second active element 7-2 is a magnetic element made of a magnetic material, and the other is a magnetic element made of a magnetic material or made of a metal material. The resulting metal component, the first active component 3-2 and the second active component 7-2 are attracted to each other.

The water ingress and drainage processes of the split type drainage mechanism of the present invention will be described below with reference to Figs.

Figures 1 and 2 show the initial state of the split drainage mechanism. At this time, the first piston 3 is located at the bottom 1-2 (lower stop position), the first piston 3 presses the second piston 5 so that the second piston 5 is also at its lower stop position, and the large seal ring 5 on the second piston 5 1 sealed with the bottom 1-2 of the box. The inner nesting tube 7 is located between the second piston 5 and the bottom 1-2, and the inner nesting tube 7 is in the upper dead position by the interaction of the first acting element 3-2 and the second acting element 7-2. The inner nesting tube 7 and the bottom 1-2 are not sealed, and the annular outer sealing chamber 5-3 is in communication with the water outlet.

Figure 3 shows the water intake state of the split drainage mechanism. The control switch (not shown) is turned on, and the water flows into the lower chamber 1-4, and the water pressure pushes the first piston 3 upward against the elastic force of the first piston loading spring 4. Under the action of the water pressure, the second piston 5 continues to stay in the lower stop position, and the large seal ring 5-1 on the second piston 5 continues to be sealed from the tank bottom 1-2. The mutual magnetic force between the first acting element 3-2 and the second acting element 7-2 is reduced by the increase of the relative distance, and the inner nesting tube 7 moves downward due to its own gravity and spring force, and is embedded. The sleeve 7 and the bottom 1-2 are also sealed.

During the upward movement of the first piston 3, the mutual magnetic force between the first acting element 3-2 and the second acting element 7-2 is reduced, the return spring 7-3 starts to reset, and the reset spring force also causes the inner nesting The tube 7 is moved downward, and the small sealing ring 7-1 on the inner nesting tube 7 is sealed with the bottom 1-2, thereby sealing the annular outer sealing chamber 5-3 from the water outlet. In addition, if a small sealing ring 7-1 is provided on the inner nesting tube 7, the small sealing ring 7-1 reinforces the sealing property with the bottom 1-2.

4 and 5 show the drainage state of the split type drainage mechanism. When the control switch control box 1 performs drainage, the pressurized water enters the annular seal chamber 5-3, and the water pressure and the second piston load spring 6 elastic force push the second piston 3 and the inner nest tube 7 upward. At the same time, since the amount of water in the lower chamber 1-4 is gradually reduced, the elastic force of the first piston loading spring 4 pushes the first piston 3 downward. Finally, the first piston 3 is close to the second piston 5. Since the mutual attraction between the first acting element 3-2 and the second acting element 7-2 is increased, the inner nesting tube 7 is moved upward relative to the second piston 5. Therefore, when the large seal ring 5-1 of the second piston 5 and the tank bottom 1-2 are sealed, the inner nested pipe 7 (or the small seal ring 7-1 on the inner nested pipe 7) is not yet connected to the bottom 1 - 2 to achieve the sealing, the water of the annular outer sealing chamber 5-3 can be drained from the passage between the small sealing ring 7-1 and the water outlet to avoid the large water pressure in the annular outer sealing chamber 5-3, resulting in the first The second piston 5 is opened again.

As described above, the first piston 3 moves downward, and after the large seal ring 5-1 on the second piston 5 is sealed from the tank bottom 1-2, the first acting element 3-2 interacts with the second acting element 7-2. The inner nesting tube 7 is moved upward and the return spring 7-3 is compressed.

Embodiment 2

As shown in FIG. 6 and FIG. 7, the difference between this embodiment and the first embodiment is that the first acting element 3-2 and the second acting element 7-2 are different in implementation when the inner nesting tube 7 is moved up and down. The first active element 3-2 of the embodiment is a first plunger 3-2-2 disposed at the bottom of the first piston 3, and the second active element 7-2 is a lever structure 7 fixed to the second piston 5. 2-1, the second side of the lever structure 7-2-1 extends downwardly from the second plunger 7-2-2 and the second plunger 7-2-2 is fixed to the inner nesting tube 7, When the first plunger 3-2-2 moves downward, the first side of the lever structure 7-2-1 is pressed downwards to cause the second plunger 7-2-2 to move the inner nest tube 7 upward. The first side of the lever structure 7-2-1 is provided with a jack 6-2-2 for accommodating the first plunger 3-2-2. When the first piston 3 moves upward, the first plunger 3-2-2 It can be separated from the jack 6-2-2 of the lever structure 7-2-1.

Embodiment 3

As shown in FIG. 8 and FIG. 9, the difference between this embodiment and the first embodiment is that the implementation manner of the first active component 3-2 and the second active component 7-2 is different when the inner nested tube 7 is moved up and down. . The first acting element 3-2 is a first rack 3-2-2' disposed at the bottom of the first piston 3, and the second acting element 7-2 is a gear structure 7-2- fixed to the second piston 5. 1', one side of the gear structure 7-2-1' extends downwardly out of the second rack 7-2-2' and the second rack 7-2-2' is fixed to the inner nesting tube 7 When the first rack 3-2-2' moves downward, the meshing drive gear structure 7-2-1' rotates so that the second rack 7-2-2' drives the inner nest tube 7 to move upward.

The above description shows and describes a preferred embodiment of the present invention. As described above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be construed as being Combinations, modifications, and environments are possible, and can be modified by the teachings of the above teachings or related art within the scope of the inventive concept described herein. All changes and modifications made by those skilled in the art are intended to be within the scope of the appended claims.

Industrial applicability

The split type drainage mechanism of the present invention is used for realizing the large sealing ring and the inner nesting tube (or the small sealing ring on the inner nesting tube) for sealing the first piston and the second piston and the bottom of the box respectively on different components. Therefore, the relative displacement of the large sealing ring and the small sealing ring and the sealing timing can be controlled without using the material characteristics of the large sealing ring and the small sealing ring (such as compression deformation), thereby enhancing the drainage of the drainage mechanism. Stability and extended service life of large and small seals.

Claims

A drainage mechanism comprising:

a box (1) having a box wall (1-1) and a box bottom (1-2) connected to the box wall (1-1), which is opened at the bottom (1-2) of the box Connect the water outlet of the flushing line;

a first piston (3), the first piston (3) is slidable up and down along the tank wall (1-1) in the tank (1), and the first piston (3) is to the tank (1) The inner chamber is divided into an upper chamber (1-3) and a lower chamber (1-4);

a first piston loading spring (4), the first piston loading spring (4) applying an elastic force to the first piston (3) to drive the first piston (3) to move downward;

a second piston (5) having a large sealing ring (5-1) on a peripheral wall of the bottom of the second piston (5), the second piston (5) being located at the first piston (3) and the bottom of the tank (1-2) Between the two, the second piston (5) can slide up and down in the box (1);

a second piston loading spring (6) for applying an elastic force to the second piston (5) to drive the second piston (5) to move upward;

It is characterized by:

An inner nesting tube (7) is provided between the second piston (5) and the bottom of the tank (1-2) for sliding up and down along the axial portion of the second piston (5); the second piston (5) is embedded An annular outer sealing cavity (5-3) is formed between the sleeve (7) and the bottom of the box (1-2), and the annular sealing chamber (5-3) is connected to the water outlet through the movement of the inner nesting tube (7) Or closed;

The first piston (3) is provided with a first active element (3-2), and the inner nesting tube (7) is provided with a second active element (7-2) that interacts with the first active element (3-2). The interaction of the first active element (3-2) with the second active element (7-2) to effect movement of the inner nested tube (7).
A drainage mechanism according to claim 1, characterized in that said inner nesting tube (7) is provided with a small movement with the inner nesting tube (7) and for sealing the bottom (1-2) of the tank Sealing ring (7-1).
A drainage mechanism according to claim 1, wherein the first piston (3) moves downward, and the large seal ring (5-1) and the bottom plate (1-2) of the second piston (5) are realized. After sealing, the first active element (3-2) interacts with the second active element (7-2) to move the inner nesting tube (7) upward, thereby making the annular outer sealing chamber (5-3) and the water outlet Connected and drained; the first piston (3) moves upward, and the inner nesting tube (7) moves downward, thereby sealing the annular outer sealing chamber (5-3) from the water outlet.
A drainage mechanism according to claim 1, characterized in that a return spring is provided between the second piston (5) and the inner nesting tube (7) for causing the inner nesting tube (7) to move downward. (7-3); the first piston (3) moves downward, and the first acting element (3-2) interacts with the second acting element (7-2) to move the inner nesting tube (7) upward and compress The return spring (7-3); the first piston (3) moves upward, the return spring (7-3) resets and pushes the inner nesting tube (7) downward.
The drainage mechanism according to claim 1, wherein one of the first active element (3-2) and the second active element (7-2) is a magnetic element made of a magnetic material, The other is a magnetic element made of a magnetic material or a metal element made of a metal material, and the first acting element (3-2) and the second acting element (7-2) are attracted to each other.
The drainage mechanism according to claim 1, wherein the first acting element (3-2) is a first plunger (3-2-2) disposed at the bottom of the first piston (3), The second acting element (7-2) is a lever structure (7-2-1) fixed to the second piston (5), and the second side of the lever structure (7-2-1) extends downwardly to the second a plunger (7-2-2) and the second plunger (7-2-2) is attached to the inner nesting tube (7), and the first plunger (3-2-2) will move downward The first side of the lever structure (7-2-1) is pressed downward so that the second plunger (7-2-2) drives the inner nesting tube (7) upward.
The drainage mechanism according to claim 6, wherein said first plunger (3-2-2) The lever structure (7-2-1) can be detached as the first piston (3) moves upward.
The drainage mechanism according to claim 6, characterized in that the first side of the lever structure (7-2-1) is provided with a socket for accommodating the first plunger (3-2-2) ( 6-2-2).
The drainage mechanism according to claim 1, wherein the first acting element (3-2) is a first rack (3-2-2') disposed at the bottom of the first piston (3). The second acting element (7-2) is a gear structure (7-2-1') fixed to the second piston (5), and one side of the gear structure (7-2-1') extends downward. A second rack (7-2-2') is attached and the second rack (7-2-2') is fixed to the inner nesting tube (7), the first rack (3-2-2) ') When the downward movement, the meshing drive gear structure (7-2-1') rotates so that the second rack (7-2-2') drives the inner nesting tube (7) to move upward.
The drainage mechanism according to claim 9, wherein said first rack (3-2-2') is detachable from said gear structure as said first piston (3) moves upward (7- 2-1').