CN212377373U

CN212377373U - Intelligent swing check valve for kitchen

Info

Publication number: CN212377373U
Application number: CN202020838163.8U
Authority: CN
Inventors: 张建东; 张新建; 张秋芳
Original assignee: Yu Ming Valve Group Co ltd
Current assignee: Yu Ming Valve Group Co ltd
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2021-01-19
Anticipated expiration: 2030-05-19

Abstract

The invention discloses a swing check valve for an intelligent kitchen, which comprises a valve body, a valve seat, a valve clack, a valve cover, an impeller and an inclined piston. The impeller comprises a shaft sleeve, a group of blades and a rubber gasket. The invention can not only prevent the sealing surface from being damaged by impact, but also remove the sundries adhered on the sealing surface. The invention drives the impeller to rotate in the fluid flowing process, thereby throwing away impurities on the sealing surface of the rubber gasket and preventing the impurities from adhering to the sealing surface to cause the backflow of fluid. The valve clack can only be slowly closed, so that the impact force is greatly reduced, the sealing surface is kept complete, and the phenomenon of fluid backflow is avoided.

Description

Intelligent swing check valve for kitchen

Technical Field

The invention relates to the field of valves, in particular to a swing check valve for an intelligent kitchen.

Background

The check valve is a valve with a circular valve clack and acts by self weight and medium pressure to block the medium from flowing backwards. It belongs to the automatic valve category, also called check valve, reflux valve or isolation valve. The valve clack motion mode is divided into lifting type and swing type.

The conventional swing check valve includes a valve body 26, a valve seat 27 and a valve flap 28 movable relative to the valve seat to open and close a medium flow passage as shown in fig. 1, however, a backflow phenomenon occurs in the conventional swing check valve, and the backflow phenomenon is mainly caused by two reasons:

(1) the sealing surface has problems: in the process of the valve clack of the check valve rotating and closing around the pin shaft, the closing speed is too high, so that the impact force of the valve clack on the sealing surface of the valve seat is too large, and the sealing surface is damaged.

(2) Foreign matters (dirt) adhere to the sealing surface.

The invention patent CN108953696A discloses a slow-closing swing check valve, which solves the problem that a sealing surface is easy to be damaged by impact (actually, the valve clack of the patent is easy to be blocked by an inclined piston in the rotating process and can not rotate), but can not clear sundries adhered to the sealing surface, can only be cleaned manually, is time-consuming and labor-consuming and is limited by the volume of the check valve, and is inconvenient to clean.

Disclosure of Invention

The invention aims to solve the technical problem of providing the swing check valve for the intelligent kitchen, which can not only prevent a sealing surface from being damaged by impact, but also remove sundries adhered to the sealing surface.

A rotary-opening check valve for intelligent kitchen comprises a valve body, a valve seat, a valve clack, a valve cover, an impeller and an inclined piston, wherein the valve cover is arranged at the top of the valve body, a valve cavity and an inlet cavity and an outlet cavity which are respectively communicated with the left side and the right side of the valve cavity are arranged in the valve body, the valve seat is arranged in the valve body corresponding to the inlet cavity, a pin shaft is arranged above the valve seat in the valve body, the upper end of a rocker is hinged with the pin shaft, the valve clack matched with the valve seat is fixed at the lower end of the rocker, an upper piston cavity, a lower piston cavity and an I-shaped inclined piston are arranged in the valve clack, the upper end of the inclined piston is positioned in the upper piston cavity, the excircle of the upper end of the inclined piston forms a dynamic sealing structure with the inner diameter of the upper piston cavity, the middle end of the inclined piston is connected with a guide rod, an overflow hole is arranged in the inclined piston, an upper piston cavity is communicated with a lower piston cavity through the overflow hole, buffer liquid is arranged in the upper piston cavity and the lower piston cavity, a through adjusting through hole is arranged in the center of the valve clack, a reinforcing rib is arranged on the inner side surface of the valve seat, and the impeller is sleeved on the guide rod through a bearing;

the impeller comprises a shaft sleeve, a group of blades and a rubber gasket, wherein the group of blades are circumferentially and uniformly distributed between the rubber gasket and the shaft sleeve, one end of the guide rod is fixed on the reinforcing rib, the other end of the guide rod penetrates through the shaft sleeve and the adjusting through hole and obliquely extends upwards to the outlet cavity, the rubber gasket is positioned between the valve seat and the valve clack, and the inner diameter of the adjusting through hole is 3 times of the outer diameter of the guide rod.

In one embodiment, the end face of the valve flap adjacent to the rubber gasket is provided with a leather layer.

The invention has the advantages and beneficial effects that:

the invention can not only prevent the sealing surface from being damaged by impact, but also remove the sundries adhered on the sealing surface.

1. The invention drives the impeller to rotate in the fluid flowing process, thereby throwing away impurities on the sealing surface of the rubber gasket and preventing the impurities from adhering to the sealing surface to cause the backflow of fluid.

2. In the process of the valve clack rotating and closing around the pin shaft, no matter the buffer liquid in the lower piston cavity flows into the upper piston cavity through the overflow hole or the buffer liquid in the upper piston cavity flows into the lower piston cavity through the overflow hole, the process can not be finished instantly, so the valve clack can only be closed slowly, the impact force is greatly reduced, the sealing surface is kept complete, and the phenomenon of fluid backflow is avoided.

Drawings

Fig. 1 is a schematic structural diagram of the prior art.

Fig. 2 is a schematic structural diagram of the present invention.

Fig. 3 is a schematic structural view of the impeller of the present invention.

Detailed Description

In order to facilitate an understanding of the invention, a full description thereof will be given below with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Example 1

Referring to fig. 2 and 3, an intelligent swing check valve for kitchens includes a valve body 1, a valve seat 2, a valve flap 3, a valve cover 4, an impeller 5, and an inclined piston 6.

Specifically, the valve cover 4 is disposed on the top of the valve body 1. The valve body 1 is internally provided with a valve cavity 7 and an inlet cavity 8 and an outlet cavity 9 which are respectively communicated with the left side and the right side of the valve cavity 7. A valve seat 2 is arranged in the valve body 1 corresponding to the inlet cavity 8. A pin shaft 10 is arranged in the valve body 1 above the valve seat 2. The upper end of the rocker 11 is hinged with the pin shaft 10, and the lower end of the rocker 11 is fixed with the valve clack 3 matched with the valve seat 2. An upper piston cavity 12, a lower piston cavity 3 and an I-shaped inclined piston 6 are arranged in the valve clack 3. The upper end of the inclined piston 6 is positioned in the upper piston cavity 12, the excircle of the upper end of the inclined piston 6 and the inner diameter of the upper piston cavity 12 form a dynamic seal structure, the middle end of the inclined piston 6 is axially connected with the guide rod 21 through the deflector rod 23 and the sliding groove 24, the direction of the sliding groove 24 is consistent with that of the guide rod 21, the lower end of the inclined piston 6 is positioned in the lower piston cavity 13, and the excircle of the lower end of the inclined piston 6 and the inner diameter of the lower piston cavity 13 form a dynamic seal structure. An overflow hole 16 is arranged in the inclined piston 6, the upper piston cavity 12 is communicated with the lower piston cavity 13 through the overflow hole 16, and buffer liquid is arranged in both the upper piston cavity 12 and the lower piston cavity 13. The center of the valve clack 3 is provided with a through adjusting through hole 17, the inner side surface of the valve seat 2 is provided with a reinforcing rib 18, and the impeller 5 is sleeved on a guide rod 21 through a bearing 20.

The impeller 5 includes a sleeve 51, a set of blades 52, and a rubber gasket 53.

Specifically, a group of blades 52 are uniformly distributed and arranged between the rubber gasket 53 and the shaft sleeve 51 in the circumferential direction. One end of the guide rod 21 is fixed on the reinforcing rib 18, the other end of the guide rod passes through the shaft sleeve 51 and the adjusting through hole 17 and extends upwards to the outlet cavity 9 in an inclined mode, and the rubber gasket 53 is located between the valve seat 2 and the valve clack 3. The inner diameter of the adjustment through-hole 17 is 3 times the outer diameter of the guide rod 21.

Wherein, the end face of the valve flap 3 close to the rubber gasket 53 is provided with a leather layer 22.

Working principle and working process of the invention

Procedure of impeller 5: the impeller 5 is driven to rotate in the fluid flowing process, so that sundries on the sealing surface of the rubber gasket 53 (the end surface of the rubber gasket close to the valve clack is the valve seat sealing surface of the invention) are thrown away, and the sundries are prevented from being adhered to the sealing surface to cause the backflow of the fluid.

The process that the valve clack 3 closed under self gravity and medium pressure, oblique piston 6 is around the rotation of driving lever 23 and down moves along the guide bar 21 slant, buffer liquid in upper piston chamber 12 and lower piston chamber 13 can flow through overflow hole 16 under the promotion of oblique piston 6, buffer liquid in no matter lower piston chamber 13 flows to upper piston chamber 12 through overflow hole 16 or buffer liquid in upper piston chamber 12 flows to piston chamber 13 in the lower through overflow hole 16 and can not be accomplished instantaneously, consequently, can lead to oblique piston and valve clack 3 can not instantaneous closure, can not lead to valve clack 3 closing speed too fast, prevent that the sealed face from receiving the impact damage, prevent to produce the water hammer, thereby prevent the emergence of medium refluence phenomenon.

The invention has the advantages and beneficial effects that:

2. In the process of the rotary closing of the valve clack around the pin shaft, no matter the buffer liquid in the lower piston cavity 13 flows into the upper piston cavity 12 through the overflow hole 16 or the buffer liquid in the upper piston cavity 12 flows into the lower piston cavity 13 through the overflow hole 16, the flow cannot be completed instantly, so the valve clack can only be closed slowly, the impact force is greatly reduced, the sealing surface is kept complete, and the phenomenon of fluid backflow is avoided.

The above-mentioned embodiments only express one embodiment of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A rotary-opening check valve for intelligent kitchens is characterized by comprising a valve body, a valve seat, a valve clack, a valve cover, an impeller and an inclined piston, wherein the valve cover is arranged at the top of the valve body, a valve cavity and an inlet cavity and an outlet cavity which are respectively communicated with the left side and the right side of the valve cavity are arranged in the valve body, the valve seat is arranged in the valve body corresponding to the inlet cavity, a pin shaft is arranged above the valve seat corresponding to the valve seat, the upper end of a rocker is hinged with the pin shaft, the lower end of the rocker is fixedly provided with the valve clack matched with the valve seat, an upper piston cavity, a lower piston cavity and an I-shaped inclined piston are arranged in the valve clack, the upper end of the inclined piston is positioned in the upper piston cavity, the excircle of the upper end of the inclined piston and the inner diameter of the upper piston cavity form a dynamic sealing structure, the middle end of the inclined piston is connected with a guide, an overflow hole is arranged in the inclined piston, an upper piston cavity is communicated with a lower piston cavity through the overflow hole, buffer liquid is arranged in the upper piston cavity and the lower piston cavity, a through adjusting through hole is arranged in the center of the valve clack, a reinforcing rib is arranged on the inner side surface of the valve seat, and the impeller is sleeved on the guide rod through a bearing;

2. The swing check valve for the smart kitchen according to claim 1, wherein an end surface of the valve flap adjacent to the rubber gasket is provided with a leather layer.