CN116817004A

CN116817004A - Driving unit of blow-down valve

Info

Publication number: CN116817004A
Application number: CN202310155749.2A
Authority: CN
Inventors: 陈波; 汪祥才; 余小兵; 陈哲瑜
Original assignee: Zhejiang Yushiji Photovoltaic New Materials Co ltd
Current assignee: Zhejiang Yushiji Photovoltaic New Materials Co ltd
Priority date: 2023-02-08
Filing date: 2023-02-08
Publication date: 2023-09-29

Abstract

A drive unit for a blow down valve, characterized by: the driving unit (a) comprises a driving shell (1), wherein an inner cavity of the driving shell (1) is divided into an upper cavity (101) and a lower cavity (102) by a diaphragm assembly (2), the diaphragm assembly (2) can move up and down in the inner cavity of the driving shell (1), the upper cavity (101) is communicated with the outside through a water source interface (103), and a reset piece (3) is arranged in the lower cavity (102) to provide a reset force for the diaphragm assembly (2) to move upwards. The drain valve is driven by using high-pressure fluid such as tap water as power, and can be automatically opened under the condition of water cut-off and power failure, and a toilet connected with the drain valve can be normally used. The whole blow-down valve is not required to be started under negative pressure, so that vacuum pump equipment is saved, namely, the valve can be used under negative pressure and normal pressure.

Description

Driving unit of blow-down valve

Technical Field

The application belongs to the technical field of bathroom equipment, and particularly relates to a driving unit of a blow-down valve, which is used for a vacuum interface valve and can be normally used under the condition of water cut-off and power failure.

Background

Along with the continuous improvement of the social living standard, the closestool is widely applied, the modern closestool is usually used as common bathroom equipment for treating the urine and the feces, such as the produced urine and the feces, are usually treated by flushing, but the water resource is more precious or the occasion that the water resource is inconvenient to use for flushing with a large amount of water flow is more and more inconvenient to use, and the traditional closestool is more and more inapplicable.

In order to reduce the waste of water resources or use the closestool in the occasion of inconvenient use of a large amount of water flow flushing, the vacuum sewage disposal technology is widely used, and the vacuum sewage disposal technology is widely applied to high-end markets, high-grade hotels, high-grade public toilets and rural sewage disposal systems, and the size can be discharged through the vacuum closestool; the ash water used in the family can be discharged from the ash water collecting end through a vacuum pipeline; the rural outdoor grey water collection can also be discharged by a vacuum pipeline. In the working process of the vacuum sewage disposal system, the vacuum pump enables the whole system to form vacuum, and each toilet bowl is communicated with the system and is necessarily isolated from the vacuum system by an interface valve, and the interface valve is used for controlling the vacuum of the system and the normal pressure of the toilet bowl. When the toilet is flushed, the interface valve is opened, and the things in the toilet are taken away by means of the pressure difference between the negative pressure of the system and the atmospheric pressure.

In the prior art, the vacuum interface valve in the traditional vacuum sewage draining system uses negative pressure as a power source, a vacuum pump is needed, the negative pressure is used for assisting the sealing of the interface valve, on the other hand, the vacuum sewage draining system in the existing market is not compatible with the traditional flushing toilet system, the vacuum interface valve cannot be opened in a scene with rich water resources, and the toilet cannot be normally used under the condition of water cut-off and power failure.

Disclosure of Invention

The application aims to provide a driving unit of a drain valve, which is used for the drain valve and driven by using high-pressure fluid such as tap water as power, aiming at the defect that a vacuum interface valve cannot be opened and a toilet bowl cannot be normally used under the condition of water cut and power failure in the prior art, wherein the drain valve can be automatically opened and the toilet bowl connected with the drain valve can be normally used under the condition of water cut and power failure. The whole blow-down valve is not required to be started under negative pressure, so that vacuum pump equipment is saved, namely, the valve can be used under negative pressure and normal pressure.

Technical proposal

In order to achieve the above technical object, the present application provides a driving unit of a blow-down valve, which is characterized in that: the driving unit comprises a driving shell, the inner cavity of the driving shell is divided into an upper cavity and a lower cavity by a diaphragm assembly, the diaphragm assembly can move up and down in the inner cavity of the driving shell, the upper cavity is communicated with the outside through a water source interface, and a reset piece is arranged in the lower cavity to provide reset force for the diaphragm assembly to move upwards.

In one embodiment, the diaphragm assembly can drive the spindle to move up and down during the up and down back and forth movement in the inner cavity of the driving housing.

In one embodiment, the diaphragm assembly includes a diaphragm disposed on a diaphragm cover that is capable of sliding back and forth within the lower chamber, and one end of a spindle is fixedly mounted on the diaphragm cover.

In one embodiment, one end of the main shaft is locked by a nut through the diaphragm cover, and the main shaft is provided with a protective cover at a position locked by the nut through the diaphragm cover.

In one embodiment, the return member is a return spring, one end of the return spring abuts against the bottom surface of the lower chamber, and the other end abuts against the diaphragm cover to provide an upward-moving return force for the diaphragm assembly.

In one embodiment, a shaft seal is mounted between the spindle and the bottom of the drive housing.

In one embodiment, the spindle is provided with a linear bearing at a location within the drive housing.

In one embodiment, the lower surface of the driving shell is locked with a first metal gasket by self-tapping screws at the positions corresponding to the shaft seal and the linear bearing.

In one embodiment, the drive housing includes an upper cover and a valve cavity that are locked together by a first screw that locks a first metal gasket to the upper cover and a first nut that locks a second metal gasket to the valve cavity.

Advantageous effects

The application provides a driving unit of a drain valve, which comprises a driving shell, wherein a diaphragm assembly divides an inner cavity of the driving shell into an upper cavity and a lower cavity, the diaphragm assembly can move up and down in the inner cavity of the driving shell, the upper cavity is communicated with the outside through a water source interface, and a reset piece is arranged in the lower cavity and provides reset force for the diaphragm assembly to move upwards. The drain valve is driven by using high-pressure fluid such as tap water as power, and can be automatically opened under the condition of water cut-off and power failure, and a toilet connected with the drain valve can be normally used. The whole blow-down valve is not required to be started under negative pressure, so that vacuum pump equipment is saved, namely, the valve can be used under negative pressure and normal pressure.

Drawings

FIG. 1 is a perspective view of a blow down valve in accordance with one embodiment of the present application;

FIG. 2 is a product exploded view of a trapway valve in one embodiment of the application;

FIG. 3 is a front view of a trapway valve in one embodiment of the application;

FIG. 4 is a right side view of a trapway valve in one embodiment of the application;

FIG. 5 is a schematic diagram of a blow-down valve in accordance with one embodiment of the application;

FIG. 6 is a schematic diagram of a linkage mechanism in one embodiment of the application;

FIG. 7 is an exploded view of a linkage mechanism according to one embodiment of the present application;

FIG. 8 is a schematic illustration of a lever product in accordance with one embodiment of the present application;

FIG. 9 is a schematic view of a flap product in accordance with one embodiment of the application;

FIG. 10 is a schematic view of a linkage installation structure in one embodiment of the application;

FIG. 11 is a schematic illustration of an embodiment of the present application in a pristine state;

FIG. 12 is a schematic diagram of an embodiment of the present application in an activated state;

in the figure: a-a driving unit; b-a sewage draining unit; c-a linkage mechanism; 1-a drive housing; 1 a-an upper cover; 1 b-a valve cavity; 101-an upper chamber; 102-a lower chamber; 103-a water source interface; 104-gas port; 2-a diaphragm assembly; 201-a membrane; 202-a membrane cover; 3-a reset piece; 4-a main shaft; 5-nuts; 6-a protective cover; 7-lever; 701-kidney-shaped aperture; 8-turning plates; 801-a chute; 802 arcuate face 802; 9-a sewage disposal shell; 901-groove one; 902-groove two; 903—a dirt inlet; 904-a sewage outlet; 10-a first rotating shaft; 11-a roller; 12-rolling wheels; 13-a second rotating shaft; 14-shaft seal; 15-linear bearings; 16-self-tapping screw; 17-a first metal gasket; 18-screw one; 19-first nut; 20-a first metal gasket; 21-a second metal gasket; 22-screw II; 23-a second nut; 24-a third metal gasket; 25-a metal gasket IV; 26-pins; 27-a retainer ring; 28-pin pins; 29-self-tapping screw; 30-clamping pieces; 31-a gasket; 32-a metal gasket five;

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and the like are used in the description of the present application for the purpose of illustration only and do not represent the only embodiment.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" on a second feature may be that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through intermedial media. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely under the second feature, or simply indicating that the first feature is less level than the second feature.

Unless defined otherwise, all technical and scientific terms used in the specification of the present application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used in the description of the present application includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1,2,3 and 4, a blow-down valve comprises a driving unit a and a blow-down unit b, wherein the driving unit a can link the opening and closing of a sewage inlet of the blow-down unit b through a linkage mechanism c, and a blow-down outlet 904 corresponding to the sewage inlet 903 is arranged on a blow-down shell 9. Under the condition of power failure and water cut-off, the drain valve is automatically opened under the action of the reset piece, and the closestool connected with the drain valve is normally used. When there is electricity and water, when external high-pressure fluid (tap water and the like, it is to be noted that the application provides a blow-down valve, in this embodiment, tap water is introduced as a power source, but this blow-down valve is not indicated that the application can only be used as a water valve, nor can the application be considered that tap water can only be used as a power source, in fact, the power source can be any fluid meeting the use requirement), the blow-down valve is kept closed, when the external high-pressure fluid is disconnected, under the action of a self reset piece and negative pressure, the blow-down valve is automatically opened, and the toilet connected with the blow-down valve is normally used.

Specifically, as shown in fig. 5, the driving unit a includes a driving housing 1, a diaphragm assembly 2 divides an inner cavity of the driving housing 1 into an upper chamber 101 and a lower chamber 102, the diaphragm assembly 2 can move up and down in the inner cavity of the driving housing 1, the upper chamber 101 is communicated with the outside through a water source interface 103, and a reset member 3 is disposed in the lower chamber 102 to provide a reset force for the diaphragm assembly 2 to move upwards. The membrane assembly 2 is fixedly connected with one end of the main shaft 4 in the linkage mechanism c, and the membrane assembly 2 can drive the main shaft 4 to move up and down in the process of moving up and down in the inner cavity of the driving shell 1. The diaphragm assembly 2 comprises a diaphragm 201, the diaphragm 201 is arranged on a diaphragm cover 202, the diaphragm cover 202 can slide back and forth in the lower chamber 102, and one end of the main shaft 4 is fixedly arranged on the diaphragm cover 202 and clamped by a metal gasket five 32. One end of the main shaft 4 passes through the diaphragm cover 202 and is locked by the nut 5, and the position where the main shaft 4 passes through the diaphragm cover 202 and is locked by the nut 5 is provided with the protective cover 6. The restoring member 3 is a restoring spring, one end of the restoring spring abuts against the bottom surface of the lower chamber 102, and the other end abuts against the diaphragm cover 202 to provide a restoring force for the diaphragm assembly 2 to move upwards. Wherein, the arrangement of the diaphragm assembly 2 can ensure that the isolation seal of the upper chamber 101 and the lower chamber 102 forms a pressure difference, and the diaphragm assembly 2 moves under the action of the pressure difference. The protective cover 6 is provided to prevent the spindle 4 from damaging the diaphragm 201 during the up-and-down movement of the diaphragm assembly 2.

Specifically, as shown in fig. 5, the linkage mechanism c includes a main shaft 4, the other end of the main shaft 4 passes through the bottom of the driving housing 1 and stretches into the sewage draining unit b, and the sewage inlet 9 of the sewage draining unit b can be closed or opened by linkage of the turning plate 8 through the lever 7 in the process of up-and-down back-and-forth movement of the main shaft 4. The other end of the main shaft 4 passes through the bottom of the driving housing 1 and stretches into a sewage housing 9 in the sewage unit b to be hinged with the lever 7, as shown in fig. 6 and 7, one end of the lever 7 is provided with a first rotating shaft 10, and the first rotating shaft 10 is arranged in a first groove 901 on the sewage housing 9 and can rotate. In this embodiment, the first rotary shaft 10 is preferably capable of rotating only in the first groove 901 on the sewage housing 9. The other end of the lever 7 is provided with a roller 11, the roller 11 is provided with a roller 12, the roller 11 is arranged in a chute 801 on two sides of the back of the turning plate 8, the roller 11 can roll in the chute 801, and the roller 12 can roll between the chutes 801 on two sides of the back of the turning plate 8. As shown in fig. 9, the bottom of the portion between the sliding grooves 801 on the two sides of the back of the turning plate 8 is provided with an arc-shaped surface 802 matching the shape of the roller 12. A second rotating shaft 13 is arranged on one side of the turning plate 8, and the second rotating shaft 13 is arranged in a second groove 902 on the sewage draining shell 9 and can rotate.

As shown in fig. 10, in this embodiment, the second shaft 13 is preferably capable of rotating only in the second recess 902 formed in the sewage housing 9. The spindle 4 moves downwards to drive the first rotating shaft 10 at one end of the lever 7 to rotate in the first groove 901, the roller 11 at the other end of the lever 7 drives the roller 12 to move downwards at the back of the turning plate 8, so that the second rotating shaft 13 on one side of the turning plate 8 is driven to rotate in the second groove 902, the roller 11 drives the roller 12 to seal the sewage inlet on the sewage draining shell 9 when the back of the turning plate 8 moves downwards to the bottom end of the chute 801 at the back of the turning plate 8, and at the moment, the outer surface of the roller 12 rolls into the arc-shaped surface 802, so that the sealing performance between the front surface of the turning plate 8 and the contact surface of the sewage inlet 903 reaches the optimal state.

As shown in fig. 3 and 4, a gas port 104 is provided on the driving housing 1 corresponding to the lower chamber 102, and the gas port 104 is used for communicating with the outside, and can be used for connecting an external air pump for providing high-pressure air flow when needed.

In particular, the installation of shaft seal 14 between the main shaft 4 and the bottom of the drive housing 1 ensures a seal between the drive housing 1 and the trapway 9.

In particular, as shown in fig. 5, the portion of the main shaft 4 located in the drive housing 1 is provided with a linear bearing 15. The lower surface of the driving housing 1 is locked with a first metal gasket 17 by self-tapping screws 16 at the positions corresponding to the shaft seal 14 and the linear bearing 15. The linear bearings 15 are provided to ensure that the spindle 4 moves only linearly up and down. The first metal washer 17 can prevent the linear bearing 15 and the linear bearing 14 from coming off.

Specifically, as shown in fig. 5, the driving housing 1 includes an upper cover 1a and a valve cavity 1b, the upper cover 1a and the valve cavity 1b are locked together by a first screw 18 and a first nut 19, the first screw 18 locks a first metal gasket 20 on the upper cover 1a, and the first nut 19 locks a second metal gasket 21 on the valve cavity 1 b. The valve cavity 1b is in locking connection with the sewage draining shell 9 through a second screw 22 and a second nut 23, the second screw 22 locks a third metal gasket 24 on the valve cavity 1b, and the second nut 23 locks a fourth metal gasket 25 on the sewage draining shell 9. The arrangement of the first metal gasket 20, the second metal gasket 21, the third metal gasket 24 and the fourth metal gasket 25 ensures that the flanges of the upper cover 1a and the valve cavity 1b are uniformly stressed, and the sealing is ensured to be not deformed under the high-pressure condition. The other end of the main shaft 4 is connected with the lever 7 through a pin 26 to form hinge connection, the pin 26 passes through a kidney-shaped hole 701 arranged on the lever 7 as shown in fig. 8, the shape of the kidney-shaped hole 701 is correspondingly fitted with the motion track of the hinge point of the main shaft and the lever in the motion process of the lever 7, so that the condition that the main shaft and the lever 7 cannot be blocked or the flap 8 cannot seal the drain 903 is ensured. A retainer ring 27 and a pin 28 are arranged at one end of the pin 26 to prevent the pin 26 from falling off.

The front surface of the turning plate 8 is locked with a clamping piece 30 through a tapping screw 29, and a sealing gasket 31 is clamped between the turning plate 8 and the clamping piece 30, so that the sealing performance of the sewage inlet 903 of the sewage draining shell 9 is further improved.

The working principle of the embodiment is as follows: as shown in fig. 11, when the present blow-down valve is in its original state, i.e., the blow-down valve is opened, high-pressure water (e.g., tap water) is introduced through the water source port 103, the upper chamber 101 at the upper portion of the diaphragm 201 is filled with high pressure, and the lower chamber 102 at the lower portion of the diaphragm 201 is communicated with the outside (atmosphere or low pressure) through the gas port 104, so that the pressure at the upper portion of the diaphragm 201 is much higher than the pressure at the lower portion, thereby compressing the reset member 3, and causing the diaphragm cover 202 to move downward;

the main shaft 4 connected with the diaphragm cover 202 moves downwards simultaneously, the other end of the main shaft 4 tightly presses the lever 7, so that the lever 7 rotates downwards around the first rotating shaft 10, the roller 12 at the other end of the lever 7 slides while the back of the turning plate 8 rolls, so that the turning plate 8 rotates downwards around the second rotating shaft 13, and the dirt inlet 903 is tightly covered, so that the dirt inlet 903 is isolated from the dirt outlet 904.

As shown in fig. 12, when the present blow-down valve is in the activated state, i.e., the blow-down valve passage: the high-pressure water (such as tap water) is released through the water source interface, the reset piece 3 immediately moves upwards against the diaphragm cover 202, the diaphragm cover 202 pulls the main shaft 4 to move upwards, the main shaft 4 pulls the lever 7 to rotate upwards around the first rotating shaft 10, the roller 11 at the other end of the lever 7 slides in the sliding groove 801 at the back of the turning plate 8, the turning plate 8 rotates upwards around the second rotating shaft 13 through the sliding groove 801 by the roller 11, and therefore the sewage inlet 903 is opened, and the sewage inlet 903 is communicated with the sewage drain 904.

In the practical application process of the embodiment, the side of the sewage inlet 903 of the sewage draining unit b is in a normal pressure state, and the side of the sewage draining outlet 904 is in a negative pressure state, so that a pressure difference exists at two sides of the turning plate 8, and the turning plate 8 receives an opening force; at the same time, restoring element 3 exerts an upward force on diaphragm cover 202, thereby pulling spindle 24 upward, and flap 8 is also subjected to an opening force.

The blowdown valve of this embodiment is opposite to the existing vacuum interface valve in the market, and the existing vacuum interface valve driven by negative pressure in the market only has the pressure difference for auxiliary sealing, but not for auxiliary valve opening, and the pressure difference of the interface valve is for auxiliary valve opening.

In this embodiment, only when there is high pressure fluid (e.g. tap water) pressing the membrane 201, the flap 8 is in a closed state. Therefore, in the state of water cut-off and power cut-off, for example, tap water cannot be used, the upper part of the diaphragm 201 is pressureless, and the turning plate 8 is automatically opened by the reset force of the reset piece 3, so that the toilet with the valve can be normally used under the condition that the pressurized water is stopped, namely, the tap water and the tap water are compatible. Also, even if the power is cut, the interface valve can be opened without additional negative pressure, and the power cut condition is also applicable.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples illustrate only a few embodiments of the application and are described in detail herein without thereby limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims

1. A drive unit for a blow down valve, characterized by: the driving unit (a) comprises a driving shell (1), wherein an inner cavity of the driving shell (1) is divided into an upper cavity (101) and a lower cavity (102) by a diaphragm assembly (2), the diaphragm assembly (2) can move up and down in the inner cavity of the driving shell (1), the upper cavity (101) is communicated with the outside through a water source interface (103), and a reset piece (3) is arranged in the lower cavity (102) to provide a reset force for the diaphragm assembly (2) to move upwards.

2. A drive unit for a blow down valve as in claim 1, wherein: the membrane component (2) can drive the main shaft (4) to move up and down in the process of moving up and down in the inner cavity of the driving shell (1).

3. A drive unit for a blow down valve as in claim 1, wherein: the membrane assembly (2) comprises a membrane (201), the membrane (201) is arranged on a membrane cover (202), the membrane cover (202) can slide back and forth in the lower chamber (102), and one end of the main shaft (4) is fixedly arranged on the membrane cover (202).

4. A drive unit for a blow down valve as claimed in claim 2, wherein: one end of the main shaft (4) penetrates through the diaphragm cover (202) to be locked by the nut (5), and a protective cover (6) is arranged at the position where the main shaft (4) penetrates through the diaphragm cover (202) to be locked by the nut (5).

5. A drive unit for a blow down valve as in claim 1, wherein: the reset piece (3) is a reset spring, one end of the reset spring abuts against the bottom surface of the lower cavity (102), and the other end of the reset spring abuts against the diaphragm cover (202) to provide an upward movement reset force for the diaphragm assembly (2).

6. A drive unit for a blow down valve as claimed in claim 2, wherein: and a shaft seal (14) is arranged between the main shaft (4) and the bottom of the driving shell (1).

7. A drive unit for a blow down valve as claimed in claim 2, wherein: the linear bearing (15) is arranged at the position of the main shaft (4) in the driving shell (1).

8. A drive unit for a blow down valve as claimed in claim 2, wherein: a first metal gasket (17) is locked on the lower surface of the driving shell (1) at the position corresponding to the shaft seal (14) and the linear bearing (15) through a self-tapping screw (16).

9. A drive unit for a blow down valve as in claim 1, wherein: the driving shell (1) comprises an upper cover (1 a) and a valve cavity (1 b), wherein the upper cover (1 a) and the valve cavity (1 b) are locked together through a first screw (18) and a first nut (19), the first screw (18) locks a first metal gasket (20) on the upper cover (1 a), and the first nut (19) locks a second metal gasket (21) on the valve cavity (1 b).