CN220789987U - Pneumatic drain valve - Google Patents

Abstract

The utility model provides a pneumatic drain valve, which comprises a drain base with a drain outlet, a drain body arranged on the drain base, and a connecting pipe which is longitudinally arranged and the bottom end of which is fixedly arranged on the drain base, wherein the drain body can be sleeved outside the connecting pipe in an up-down movable way, a pneumatic starting assembly is arranged between the connecting pipe and the drain body, and the pneumatic starting assembly is in linkage fit with the drain body; the periphery of drainage body bottom with outlet switching cooperation, the periphery of drainage body bottom is equipped with and is used for sealing the sealing member of outlet, right when pneumatic starting assembly air feed, pneumatic starting assembly drive the drainage body lifts in order to open the outlet of drainage base is discharged. The peripheral ring at the bottom end of the drainage body is matched with the water outlet in an opening and closing manner, the water pressure receiving area of the peripheral ring of the drainage body is small, and then the starting force value required by the drainage valve can be reduced, and the air supply pressure to the pneumatic starting assembly is reduced.

Description

Pneumatic drain valve

Technical Field

The utility model relates to the technical field of bathroom products, in particular to a pneumatic drain valve.

Background

Some existing pneumatic drain valves for toilet tanks generally comprise a drain base with a drain opening and a drain body fixedly mounted on the drain base, a connecting pipe capable of moving up and down is arranged in the drain body, and a sealing disk is arranged at the bottom end of the connecting pipe and is used for sealing the drain opening or opening the drain opening. The top of the drainage body is provided with a pneumatic starting assembly, the connecting pipe falls down to enable the sealing disc to seal the drainage outlet in an initial non-drainage state, and when an air source supplies air to the pneumatic starting assembly, the pneumatic starting assembly drives the connecting pipe to move upwards through the transmission structure so as to open the drainage outlet to realize drainage. In the prior art, the water outlet is closed by adopting the sealing disc, so that the pressure-receiving area of the sealing disc is larger, the driving force value for driving the connecting pipe to move upwards is also larger, larger air supply pressure is required to be provided for the pneumatic starting assembly, when the manual button is adopted for air supply, the required manual force value is larger, and when the air pump is adopted for air supply, the power of the air pump is larger.

Disclosure of Invention

In order to solve the above problems, an object of the present utility model is to provide a pneumatic drain valve, which can reduce the required starting force value of the drain valve, and further reduce the air pressure of the air supply to the pneumatic starting assembly.

The utility model is realized by the following steps:

the pneumatic drainage valve comprises a drainage base with a drainage outlet, a drainage body arranged on the drainage base, and a connecting pipe which is longitudinally arranged and the bottom end of which is fixedly arranged on the drainage base, wherein the drainage body can be sleeved outside the connecting pipe in an up-down movable way, a pneumatic starting assembly is arranged between the connecting pipe and the drainage body, and the pneumatic starting assembly is in linkage fit with the drainage body; the periphery of drainage body bottom with outlet switching cooperation, the periphery of drainage body bottom is equipped with and is used for sealing the sealing member of outlet, right when pneumatic starting assembly air feed, pneumatic starting assembly drive the drainage body lifts in order to open the outlet of drainage base is discharged.

Preferably, the pneumatic starting assembly is integrally mounted on the connecting pipe, or the pneumatic starting assembly is integrally mounted on the drainage body, or one part of the pneumatic starting assembly is mounted on the connecting pipe, and the other part of the pneumatic starting assembly is mounted on the drainage body.

Preferably, the pneumatic starting assembly is integrally mounted on the connecting pipe and is located in the inner cavity of the drainage body, an air guide cover is fixed on the connecting pipe, an air guide channel is arranged in the air guide cover, an air outlet of the air guide channel is communicated with the pneumatic starting assembly, and the top of the air guide cover penetrates out of the upper end of the drainage body and is provided with an air inlet of the air guide channel.

Preferably, the air guide cover is tubular and fixed at the upper part of the connecting pipe, and the air guide cover is arranged around the pneumatic starting assembly.

Preferably, a water baffle plate extending in the radial direction is arranged on the connecting pipe, the water baffle plate seals the bottom end opening of the air guide cover, a containing cavity is defined by the water baffle plate and the air guide cover, and the pneumatic starting assembly is isolated in the containing cavity.

Preferably, the bottom of the side wall of the air guide cover is provided with a water leakage hole communicated with the accommodating cavity.

Preferably, the upper end face of the drainage body is provided with an avoidance hole for the air guide cover to penetrate out, so that the drainage body is lifted up to achieve the effect of limiting and guiding.

Preferably, the drainage body is internally provided with a vertically-through sleeve, the connecting pipe and the assembly formed by connecting the air guide cover penetrate through the sleeve, the inner wall of the sleeve is provided with a longitudinally-extending guide groove or guide rib, and the outer wall of the connecting pipe and the air guide cover is respectively provided with a guide rib or guide groove matched with the guide groove or the guide rib.

Preferably, the drainage body is internally provided with a sleeve which is vertically penetrated, the connecting pipe and the assembly formed by connecting the air guide cover penetrate through the sleeve, the inner edge of the bottom end opening of the sleeve is radially inwards provided with an annular check ring, and after the drainage body is lifted up, the water baffle is abutted to the upper surface of the annular check ring and closes the opening surrounded by the annular check ring.

Preferably, the pneumatic starting assembly comprises a starting cylinder, a piston, a return spring and a cylinder cover, wherein the cylinder cover is fixedly covered at the bottom end opening of the starting cylinder, the piston penetrates through the cylinder cover, the inner end of the piston is positioned in the starting cylinder, the outer end of the piston is positioned at one end outside the starting cylinder and is fixed on the connecting pipe, and the starting cylinder is abutted against the drainage body to drive the drainage body to move upwards; the reset spring is movably arranged in the starting cylinder, one end of the reset spring is sprung and propped against the starting cylinder or the cylinder cover, the other end of the reset spring is sprung and propped against the inner end of the piston, and the reset spring applies downward reset force to the starting cylinder or the cylinder cover.

Compared with the prior art, the pneumatic drain valve provided by the utility model has at least the following technical effects:

1. according to the utility model, the peripheral ring at the bottom end of the drainage body is matched with the water outlet in an opening and closing manner, when the pneumatic starting assembly supplies air, the pneumatic starting assembly drives the drainage body to lift up to open the water outlet of the drainage base for drainage, and compared with the mode that the peripheral ring at the bottom end of the drainage body is matched with the water outlet in an opening and closing manner, the sealing disc is used for closing the water outlet in the prior art, the pressure receiving area of the sealing disc is larger, the water receiving pressure area of the peripheral ring of the drainage body is smaller, the starting force value required by the drainage valve can be reduced, the air supply pressure of the pneumatic starting assembly is reduced, and the manual starting force value can be further reduced or the air pump power can be reduced.

2. The air guide cover is tubular and fixed on the upper part of the connecting pipe, and surrounds the pneumatic starting assembly, so that the air guide cover has a compact overall structure and small occupied volume.

3. The connecting pipe is provided with a radially extending water baffle, the water baffle seals the bottom end opening of the air guide cover and encloses a containing cavity with the air guide cover, and the pneumatic starting assembly is isolated in the containing cavity, so that water can be effectively prevented from being filled into the pneumatic starting assembly in the water draining process.

4. The top of air guide lid wears out the upper end of drainage body and is provided with the air inlet of air guide channel, air guide channel's air inlet need not bubble in water like this, and the leakproofness is better.

5. The bottom of the side wall of the air guide cover is provided with a water leakage hole communicated with the accommodating cavity, so that the accommodating cavity can be further ensured to be emptied of water, and water is prevented from entering the pneumatic starting assembly.

6. The cylinder cover fixing cover is connected to the bottom end opening of the starting cylinder, the piston penetrates through the cylinder cover, namely, the starting cylinder is inverted, water vapor enters the starting cylinder, water formed by water vapor condensation can flow out from the bottom end opening of the starting cylinder, and therefore no water exists in the starting cylinder.

Drawings

Fig. 1 is a schematic structural view of a pneumatic drain valve of the present utility model.

Fig. 2 is a schematic cross-sectional view of a pneumatic drain valve according to the present utility model.

Fig. 3 is an exploded view of a pneumatic drain valve of the present utility model.

Fig. 4 is a schematic cross-sectional view of the present utility model with a pneumatic drain valve closed.

Fig. 5 is a schematic cross-sectional view of a pneumatic drain valve of the present utility model when activated to drain.

FIG. 6 is an exploded view of a connecting tube and an air guide cover of a pneumatic drain valve of the present utility model;

FIG. 7 is one of the perspective views of the drain body of a pneumatic drain valve of the present utility model;

fig. 8 is a second perspective view of a drain body of a pneumatic drain valve of the present utility model.

Reference numerals illustrate: the water draining device comprises a 1-draining base, a 11-draining outlet, a 2-draining body, a 21-avoiding hole, a 22-sleeve, a 221-guiding groove, a 23-annular retainer ring, a 3-connecting pipe, a 31-water baffle, a 32-connecting cylinder, a 33-water draining gap, a 34-connecting hole and a 35-first guiding rib; 4-pneumatic starting components, 41-starting cylinders, 42-pistons, 43-return springs, 44-cylinder heads, 45-first air inlet channels, 5-sealing elements, 6-air guide covers, 61-air inlets, 62-water leakage holes, 63-second air inlet channels, 64-second guide ribs and 7-connectors.

Detailed Description

The utility model will be further described with reference to the drawings and specific examples.

Referring to fig. 1 to 6, a pneumatic drain valve comprises a drain base 1 with a drain outlet 11, a drain body 2 arranged on the drain base 1, and a connecting pipe 3 longitudinally arranged and fixedly arranged at the bottom end on the drain base 1, wherein the drain body 2 can be vertically movably sleeved outside the connecting pipe 3, a pneumatic starting assembly 4 is arranged between the connecting pipe 3 and the drain body 2, and the pneumatic starting assembly 4 is in linkage fit with the drain body 2; the periphery of drainage body 2 bottom with outlet 11 switching cooperation, the periphery of drainage body 2 bottom is equipped with and is used for sealing outlet 11's sealing member 5, when right pneumatic starting assembly 4 air feed, pneumatic starting assembly 4 drive drainage body 2 lifts up in order to open outlet 11 of drainage base 1 carries out the drainage. Through with the week circle and the outlet 11 switching cooperation of drainage body 2 bottom, when supplying air to pneumatic starting assembly 4, pneumatic starting assembly 4 drive drainage body 2 lifts up in order to open the outlet 11 of drainage base 1 and carry out the drainage, adopt the week circle of drainage body 2 bottom and outlet 11 switching cooperation, compare prior art and adopt the mode of sealing disk closed outlet, sealing disk pressurized area is great, and the pressurized area of the water of the week circle of drainage body 2 is less, can reduce the starting force value that the drain valve needs, reduce the air feed atmospheric pressure to pneumatic starting assembly 4, and then can make manual starting force value little or can reduce the air pump power. The preferred seal 5 is a water pad.

Preferably, the pneumatic starting assembly 4 is integrally mounted on the connecting pipe 3, or the pneumatic starting assembly 4 is integrally mounted on the drainage body 2, or one part of the pneumatic starting assembly 4 is mounted on the connecting pipe 3, and the other part is mounted on the drainage body 2.

Referring to fig. 1 to 6, preferably, the pneumatic starting assembly 4 is integrally mounted on the connecting pipe 3 and is located in the inner cavity of the drainage body 2, an air guide cover 6 is fixed on the connecting pipe 3, an air guide channel is arranged in the air guide cover 6, an air outlet of the air guide channel is communicated with the pneumatic starting assembly 4, and a top of the air guide cover 6 penetrates out of the upper end of the drainage body 2 and is provided with an air inlet 61 of the air guide channel. By introducing the air inlet 61 provided on the air guide cover 6 to the upper end of the drain body 2, the air pipe for connecting the air inlet 61 and the air source (external air supply mechanism) is not soaked in water, so that the connection is convenient and reliable.

Referring to fig. 2 to 5, the air guide cover 6 is preferably tubular and is fixed to the upper portion of the connection pipe 3, and is disposed around the pneumatic starting assembly 4. The air cap 6 may further be provided entirely around the pneumatic starting assembly 4, i.e. the air cap 6 is provided outside the pneumatic starting assembly 4.

Referring to fig. 2 to 6, preferably, the connecting pipe 3 is provided with a radially extending water baffle 31, the water baffle 31 closes the bottom opening of the air guide cover 6 and encloses a containing cavity with the air guide cover 6, and the pneumatic starting assembly 4 is isolated in the containing cavity, so that the pneumatic starting assembly 4 can be isolated in the upper cavity of the drainage body 2, and water filling into the pneumatic starting assembly 4 can be avoided or reduced as much as possible during drainage.

Referring to fig. 3 and 6, preferably, a water leakage hole 62 is formed at the bottom of the sidewall of the air guide cover 6 and is communicated with the accommodating cavity. The water leakage gap 33 is arranged on the side walls of the connecting pipe 3 and the air guide cover 6, so that water in the accommodating cavity can flow out, and further, the water is prevented from entering the pneumatic starting assembly 4.

Referring to fig. 1, 2, 4 and 5, preferably, the upper end surface of the drainage body 2 is provided with a avoiding hole 21 for the air guide cover 6 to penetrate out, so as to play a role in limiting and guiding the lifting of the drainage body 2. So that the drain body 2 can vertically move up and down relative to the air guide cover 6 and the connecting pipe 3.

Referring to fig. 6 to 8, preferably, a sleeve 22 penetrating up and down is disposed in the drainage body 2, an assembly formed by connecting the connecting pipe 3 and the air guiding cover 6 is disposed through the sleeve 22, a guiding groove or guiding rib extending longitudinally is disposed on an inner wall of the sleeve 22, and guiding ribs or guiding grooves matched with the air guiding groove or guiding rib are disposed on outer walls of the connecting pipe 3 and the air guiding cover 6 respectively. Specifically, in this embodiment, the inner wall of the sleeve 22 is provided with a longitudinally extending guiding groove 221, the outer wall of the connecting tube 3 is provided with a first guiding rib 35 matched with the guiding groove 221, and the outer wall of the air guiding cover 6 is provided with a second guiding rib 64 matched with the guiding groove 221.

Referring to fig. 2, 4, 5 and 8, preferably, an annular collar 23 is disposed radially inward on an inner edge of the bottom opening of the sleeve 22, and the water baffle 31 abuts against an upper surface of the annular collar 23 and closes an opening surrounded by the annular collar 23 after the drain body 2 is lifted. By means of the design, water flow can be further effectively prevented from entering the accommodating cavity through the opening formed by the annular check ring 23 in a surrounding mode during water drainage, and therefore the waterproof effect on the pneumatic starting assembly 4 is better.

Referring to fig. 1 to 6, preferably, the pneumatic starting assembly 4 includes a starting cylinder 41, a piston 42, a return spring 43 and a cylinder head 44, the cylinder head 44 is fixedly covered at the bottom end opening of the starting cylinder 41, the piston 42 is penetrated through the cylinder head 44, the inner end of the piston 42 is positioned in the starting cylinder 44, the outer end of the piston 42 is positioned at one end outside the starting cylinder 41 and is fixed on the connecting pipe 3, and the starting cylinder 41 abuts against the drainage body 2 to drive the drainage body 2 to move upwards; the return spring 43 is movably disposed in the starting cylinder 41, one end of the return spring 43 is sprung against the inner end of the piston 42, and the return spring 43 applies a downward return force to the starting cylinder 41 or the cylinder head 44. In this design, the starting cylinder 41 is inverted (i.e. the opening of the starting cylinder 41 is downward), when water enters the starting cylinder 41, the water can flow out under the action of self gravity, so that no water in the starting cylinder 41 is further ensured.

The piston 42 is provided with a first air inlet channel 45 communicated with the starting cylinder 41, the air guide channel further comprises a second air inlet channel 63, the wall of the air guide cover 6 is provided with the second air inlet channel 63, the first air inlet channel 45 is communicated with the second air inlet channel 63, and the air inlet 61 is an inlet of the second air inlet channel 63. The air from the external air supply mechanism enters the starting cylinder 41 through the air inlet 61, the second air inlet channel 63 and the first air inlet channel 45, and as the piston 42 is fixed on the connecting pipe 3 and the connecting pipe 3 is fixed on the drainage base 1, the cylinder moves upwards relative to the piston 42, and further drives the drainage body 2 which is abutted against the piston to move upwards, so that the sealing piece 5 of the outer ring of the drainage body 2 is far away from the drainage base 1, and water in the water tank can enter the drainage outlet 11 along a gap generated between the drainage body 2 and the drainage base 1 to be discharged.

Referring to fig. 2 to 6, preferably, a joint 7 is provided between the first air intake passage 45 and the second air intake passage 63 for communicating the first air intake passage 45 and the second air intake passage 63. The connecting pipe 3 is provided with a connecting cylinder 32, a rod body of the piston 42 is fixed in the connecting cylinder 32, the cylinder cover 44 is provided with a guide hole for the piston 42 to penetrate, the bottom of the connecting cylinder 32 is provided with a connecting hole 34, one end of the connecting hole 34 is connected with the first air inlet channel 45, and the other end of the connecting hole 34 is connected with the joint 7.

The utility model has the following working principle:

the gas from the external gas supply mechanism enters the starting cylinder 41 through the gas inlet 61, the second gas inlet channel 63, the joint 7, the connecting hole 34 and the first gas inlet channel 45 of the gas guide cover 6, and as the piston 42 is fixed on the connecting pipe 3 and the connecting pipe 3 is fixed on the drainage base 1, only the starting cylinder 41 moves upwards relative to the piston 42, and further drives the drainage body 2 which is abutted against the piston to move upwards, so that the sealing element 5 at the outer ring of the drainage body 2 is far away from the drainage base 1, and water in the water tank can be discharged through the water outlet 11; after that, the external air supply mechanism stops supplying air, the pressure of the air is lost in the starting cylinder 41, the reset force of the reset spring 43 acts on the cylinder cover 44, the cylinder cover 44 is driven by the reset spring 43 to move downwards, and then the starting cylinder 41 is driven to move downwards for reset, and the water draining body 2 moves under the action of gravity and is pressed on the water draining base 1 again due to the fact that the upward acting force of the starting cylinder 41 is lost, so that the water draining opening 11 is closed, and water draining is stopped.

The points to be described are: first, in the description of the present application, it should be noted that, unless otherwise specified and defined, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be mechanical or electrical, or may be a direct connection between two elements, and "upper," "lower," "left," "right," etc. are merely used to indicate relative positional relationships, which may be changed when the absolute position of the object being described is changed.

Secondly: in the drawings of the disclosed embodiments, only the structures related to the embodiments of the present disclosure are referred to, and other structures may refer to the general design, so that the same embodiment and different embodiments of the present disclosure may be combined with each other without conflict.

Finally, the above description is only a preferred embodiment of the present utility model, and the scope of the present utility model is not limited to the above examples, but all technical solutions belonging to the concept of the present utility model are within the scope of the present utility model.

It should be noted that modifications and adaptations to the present utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims (10)

1. The utility model provides a pneumatic drain valve, includes the drainage base that has the outlet and locates the drainage body on the drainage base, its characterized in that: the water draining device comprises a water draining base, a water draining body, a connecting pipe, a pneumatic starting assembly and a water draining assembly, wherein the water draining base is longitudinally arranged, the bottom end of the connecting pipe is fixedly arranged on the water draining base, the water draining body can be sleeved outside the connecting pipe in an up-down movable mode, the pneumatic starting assembly is arranged between the connecting pipe and the water draining body, and the pneumatic starting assembly is in linkage fit with the water draining body; the periphery of drainage body bottom with outlet switching cooperation, the periphery of drainage body bottom is equipped with and is used for sealing the sealing member of outlet, right when pneumatic starting assembly air feed, pneumatic starting assembly drive the drainage body lifts in order to open the outlet of drainage base is discharged.

2. A pneumatic drain valve according to claim 1, wherein: the pneumatic starting assembly is integrally arranged on the connecting pipe, or the pneumatic starting assembly is integrally arranged on the drainage body, or one part of the pneumatic starting assembly is arranged on the connecting pipe, and the other part of the pneumatic starting assembly is arranged on the drainage body.

3. A pneumatic drain valve according to claim 2, wherein: the pneumatic starting assembly is integrally arranged on the connecting pipe and is positioned in the inner cavity of the drainage body, an air guide cover is fixed on the connecting pipe, an air guide channel is arranged in the air guide cover, an air outlet of the air guide channel is communicated with the pneumatic starting assembly, and the top of the air guide cover penetrates out of the upper end of the drainage body and is provided with an air inlet of the air guide channel.

4. A pneumatic drain valve as defined in claim 3, wherein: the air guide cover is tubular and fixed on the upper part of the connecting pipe, and the air guide cover is arranged around the pneumatic starting assembly.

5. A pneumatic drain valve as defined in claim 4, wherein: the connecting pipe is provided with a radially extending water baffle, the water baffle seals the bottom end opening of the air guide cover and encloses a containing cavity with the air guide cover, and the pneumatic starting assembly is isolated in the containing cavity.

6. A pneumatic drain valve according to claim 5, wherein: the bottom of the side wall of the air guide cover is provided with a water leakage hole communicated with the accommodating cavity.

7. A pneumatic drain valve as defined in claim 3, wherein: the upper end face of the drainage body is provided with an avoidance hole used for penetrating out the air guide cover, and the drainage body is lifted up to achieve the effect of limiting and guiding.

8. A pneumatic drain valve as defined in claim 3, wherein: the drainage body is internally provided with a sleeve which is vertically penetrated, the connecting pipe and the assembly formed by connecting the air guide covers penetrate through the sleeve, the inner wall of the sleeve is provided with a guide groove or a guide rib which longitudinally extends, and the outer wall of the connecting pipe and the air guide cover is respectively provided with a guide rib or a guide groove matched with the guide groove or the guide rib.

9. A pneumatic drain valve according to claim 5, wherein: the drainage body is internally provided with a sleeve which is vertically penetrated, a connecting pipe and an assembly formed by connecting the air guide covers penetrate through the sleeve, an annular check ring is radially inwards arranged at the inner edge of an opening at the bottom end of the sleeve, and after the drainage body is lifted up, the water baffle is abutted to the upper surface of the annular check ring and closes an opening surrounded by the annular check ring.

10. A pneumatic drain valve according to claim 1, wherein: the pneumatic starting assembly comprises a starting cylinder, a piston, a reset spring and a cylinder cover, wherein the cylinder cover is fixedly covered at the bottom end opening of the starting cylinder, the piston penetrates through the cylinder cover, the inner end of the piston is positioned in the starting cylinder, the outer end of the piston is positioned at one end outside the starting cylinder and is fixed on the connecting pipe, and the starting cylinder is abutted against the drainage body to drive the drainage body to move upwards; the reset spring is movably arranged in the starting cylinder, one end of the reset spring is sprung and propped against the starting cylinder or the cylinder cover, the other end of the reset spring is sprung and propped against the inner end of the piston, and the reset spring applies downward reset force to the starting cylinder or the cylinder cover.