CN-224214470-U - Miniature positive negative pressure valve

CN224214470UCN 224214470 UCN224214470 UCN 224214470UCN-224214470-U

Abstract

The utility model provides a miniature positive and negative pressure valve, which comprises an air distribution valve body, wherein an interface I, an interface II and an interface III are arranged on the side part of the air distribution valve body, the upper part of the air distribution valve body is provided with a positive pressure control area and a negative pressure control area, the positive pressure control area is provided with an air passage I connected with the interface I and an air passage II connected with the interface II, the negative pressure control area is provided with an air passage III connected with the interface III and an air passage IV connected with the interface I, the positive pressure control area and the negative pressure control area are respectively provided with a control valve for controlling the on-off of the air passage I and the air passage II and the air passage III and the air passage IV, the two control valves are arranged in parallel and in an array, the control valves comprise an electromagnetic driving mechanism and a stop valve body, the stop valve body is fixed on the air distribution valve body through screws, and the electromagnetic driving mechanism is fixedly abutted with the stop valve body through C-shaped buckles. The utility model has the advantages of small and compact volume, convenient maintenance and capability of realizing positive and negative pressure control.

Inventors

LI XISHENG
CHEN BINYU
ZHANG PEIWU
LI CHUNFENG
CHEN XI

Assignees

浙江埃迈控股有限公司

Dates

Publication Date: 20260508
Application Date: 20250627

Claims (10)

1. A miniature positive and negative pressure valve is characterized by comprising an air distribution valve body, wherein an interface I, an interface II and an interface III are arranged on the side part of the air distribution valve body, the upper part of the air distribution valve body is provided with a positive pressure control area and a negative pressure control area, the positive pressure control area is provided with an air passage I connected with the interface I and an air passage II connected with the interface II, the negative pressure control area is provided with an air passage III connected with the interface III and an air passage IV connected with the interface I, the positive pressure control area and the negative pressure control area are respectively provided with control valves for controlling the on-off of the air passage I and the air passage II and the air passage III and the air passage IV, the two control valves are arranged in parallel and in an array, the control valves comprise an electromagnetic driving mechanism and a stop valve body, the stop valve body is fixed on the air distribution valve body through screws, and the electromagnetic driving mechanism is fixedly butted with the stop valve body through a C-shaped buckle.
2. The miniature positive and negative pressure valve of claim 1, wherein a coil is arranged in the electromagnetic driving mechanism, the stop valve body is provided with a valve core which is controlled by the coil to realize axial movement, the valve core is controlled by a reset spring to reset, the stop valve body is further provided with a valve cavity for accommodating the valve core, and a first channel and a second channel which are communicated with the valve cavity, the first channel and the second channel are controlled to be on-off through movement of the valve core, and the first channel and the second channel are in a normally-closed state.
3. The miniature positive and negative pressure valve of claim 2, wherein the first and second channels of the stop valve body of the control valve of the positive pressure control area face the positive pressure control area and are respectively butted with the first and second air channels, and the first and second channels of the stop valve body of the control valve of the negative pressure control area face the negative pressure control area and are respectively butted with the third and fourth air channels.
4. The miniature positive and negative pressure valve of claim 3, wherein end face grooves are formed in the first channel and the second channel, and sealing rings are arranged in the end face grooves.
5. The miniature positive and negative pressure valve of claim 2, wherein a first dovetail body is arranged on one surface of the electromagnetic driving mechanism facing the cut-off valve body, a second dovetail body corresponding to the first dovetail body is arranged on one surface of the cut-off valve body facing the electromagnetic driving mechanism, the first dovetail body and the second dovetail body jointly form a dovetail block, the opening of the C-shaped buckle is dovetail-shaped and clamped between the first dovetail body and the second dovetail body, and the first dovetail body and the second dovetail body are uniformly distributed by taking the axis of the valve core as an array base point.
6. A miniature positive-negative pressure valve as set forth in claim 1, 2 or 5, wherein said electromagnetic driving mechanism is inserted and positioned with said stop valve body through a positioning pin and a positioning hole.
7. The miniature positive and negative pressure valve of claim 6, wherein the positioning pin is positioned on a side of the electromagnetic drive mechanism facing the stop valve body, and the positioning hole is positioned on a side of the stop valve body facing the electromagnetic drive mechanism.
8. The miniature positive and negative pressure valve of claim 1, wherein the top corner of the upper part of the air distribution valve body is provided with a downward fixing recess, and the fixing recess is provided with a fixing hole penetrating from top to bottom.
9. The miniature positive and negative pressure valve of claim 1, wherein the first, second and third ports are provided with quick connectors.
10. The miniature positive and negative pressure valve of claim 9, wherein the second port and the third port are positioned on one side of the gas distribution valve body far away from the first port, the stop valve body is positioned right above the gas distribution valve body, and the electromagnetic driving mechanisms of the two control valves are positioned right above the quick connectors of the second port and the third port.

Description

Miniature positive negative pressure valve Technical Field The utility model relates to the field of electromagnetic valves, in particular to a miniature positive and negative pressure valve. Background The existing electromagnetic valve has huge volume, or when the electromagnetic valve is purchased and used as a standard component, the whole length of the electromagnetic valve cannot be reduced due to the fact that the air distributing valve is relatively long and the electromagnetic driving mechanism at one end or two ends of the electromagnetic valve is in size, and the electromagnetic valve affects installation in some special occasions (narrow space or limited installation space). Disclosure of utility model Based on the above problems, the utility model aims to provide a miniature positive-negative pressure valve which is small and compact in size, convenient to maintain and capable of realizing positive-negative pressure control. The miniature positive-negative pressure valve comprises an air distribution valve body, wherein an interface I, an interface II and an interface III are arranged on the side part of the air distribution valve body, the upper part of the air distribution valve body is provided with a positive pressure control area and a negative pressure control area, the positive pressure control area is provided with an air passage I connected with the interface I and an air passage II connected with the interface II, the negative pressure control area is provided with an air passage III connected with the interface III and an air passage IV connected with the interface I, the positive pressure control area and the negative pressure control area are respectively provided with a control valve for controlling the on-off of the air passage I and the air passage II and the air passage III and the air passage IV, the two control valves are arranged in parallel and in an array, the control valves comprise an electromagnetic driving mechanism and a stop valve body, the stop valve body is fixed on the air distribution valve body through screws, and the electromagnetic driving mechanism is fixedly butted with the stop valve body through a C-shaped buckle. The electromagnetic valve is further characterized in that a coil is arranged in the electromagnetic driving mechanism, the stop valve body is provided with a valve core which is controlled by the coil to realize axial movement, the valve core is controlled to reset by a reset spring, the stop valve body is further provided with a valve cavity for accommodating the valve core, a first channel and a second channel which are communicated with the valve cavity, the on-off of the first channel and the second channel is controlled by the movement of the valve core, and the first channel and the second channel are in a normally closed state. The control valve of the positive pressure control area is further arranged in such a way that a first channel and a second channel of a stop valve body of the control valve of the positive pressure control area face the positive pressure control area and are respectively in butt joint with the first air passage and the second air passage, and a first channel and a second channel of a stop valve body of the control valve of the negative pressure control area face the negative pressure control area and are respectively in butt joint with the third air passage and the fourth air passage. The utility model is further characterized in that end face grooves are arranged at the positions of the first channel and the second channel, and sealing rings are arranged in the end face grooves. The valve is further characterized in that a first dovetail body is arranged on one surface of the electromagnetic driving mechanism, facing the cut-off valve body, a second dovetail body corresponding to the first dovetail body is arranged on one surface of the cut-off valve body, facing the electromagnetic driving mechanism, the first dovetail body and the second dovetail body jointly form a dovetail block, an opening of the C-shaped buckle is in a dovetail shape and is clamped between the first dovetail body and the second dovetail body, the first dovetail body and the second dovetail body are two groups or more, and valve core axes are uniformly distributed as array base points. The utility model is further arranged that the electromagnetic driving mechanism and the stop valve body are inserted and positioned through the positioning pin and the positioning hole. The utility model further provides that the positioning pin is positioned on one surface of the electromagnetic driving mechanism facing the stop valve body, and the positioning hole is positioned on one surface of the stop valve body facing the electromagnetic driving mechanism. The utility model is further characterized in that a fixing recess which is arranged downwards is arranged at the top angle position of the upper part of the air distribution valve body, and a fixing