CN217977675U

CN217977675U - Air valve with protection function

Info

Publication number: CN217977675U
Application number: CN202222373543.0U
Authority: CN
Inventors: 单腾浩
Original assignee: Ningbo Novotel Automation Co ltd
Current assignee: Ningbo Novotel Automation Co ltd
Priority date: 2022-09-07
Filing date: 2022-09-07
Publication date: 2022-12-06
Anticipated expiration: 2032-09-07

Abstract

The utility model relates to an air valve with protect function, which comprises a valve body, fix the valve gap in valve body one end, the activity is located the valve rod in the valve body, and locate the switch on the valve gap, the switch includes detachable fixes the base on the valve gap and rotatable connects the elastic swing arm on the base, the one end of valve rod still is equipped with detachable protection piece, protection piece includes the casing, the round pin post and spring, the casing is concentric and detachable fixes the one end at the valve rod, the one end of casing has seted up the screw thread counter bore, correspondingly, the one end center of valve rod outwards forms the external screw thread axle, the screw thread counter bore cover establishes the spiro union on the external screw thread axle, the through-hole has been seted up at the bottom surface center of screw thread counter bore, the round pin post alternates to set up in the through-hole concentrically, the spring is located in the screw thread counter bore and is in compression state all the time; the utility model discloses the life of valve rod has been prolonged in order to avoid the whole valve of changing by a wide margin to the use cost of valve has been reduced.

Description

Air valve with protection function

Technical Field

The utility model relates to an air valve with protect function.

Background

Extrusion formula air valve is a valve that is applicable to in equipment such as air pump, and extrusion formula air valve need last and frequent extrusion valve rod just can keep operating condition when using, but the valve rod among the current extrusion formula air valve is owing to lack protect function and with extrusion switch direct contact, and frequent extrusion is very easily damaged the extrusion end of valve rod, leads to the life of valve rod shorter, and the valve rod in case damage the back, can only change valve whole, so lead to the use cost of valve higher, treat further improvement.

SUMMERY OF THE UTILITY MODEL

To the current situation of above-mentioned prior art, the utility model aims to solve the technical problem that a pneumatic valve that has protect function who has prolonged the life of valve rod in order to reduce use cost by a wide margin is provided.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides an air valve with protect function, includes the valve body, fixes valve gap, the activity in the valve body and locates the valve rod in the valve body and locate the switch on the valve gap of valve body one end, and the switch includes that detachable fixes base and the rotatable elastic swing arm of connection on the base on the valve gap, and the one end of valve rod is passed valve gap and base and is stretched out the inboard of elastic swing arm and mutually supports with the inner wall of elastic swing arm, its characterized in that, the one end of valve rod still is equipped with detachable protection piece, protection piece includes casing, round pin post and spring, the concentric and detachable one end of fixing at the valve rod of casing, the screw thread counter bore has been seted up to the one end of casing, correspondingly, the one end center of valve rod outwards is formed with the external screw thread shaft, the spiro union is established on the external screw thread shaft in the screw thread counter bore cover, the through-hole has been seted up at the bottom surface center of screw thread counter bore, the round pin post alternates to set up in the through-hole with one heart, the inner edge of round pin post outwards is formed with the turn-ups, the turn-ups activity is located in the screw thread counter bore, the spring is located and is in the compression state all the screw thread counter bore all the both ends of spring respectively, the top is on the tip of screw thread shaft and the turn-ups.

Preferably, the housing has an outer diameter equal to an outer diameter of the valve stem.

Preferably, a bore is formed in the base, and the protector fixed to one end of the valve stem is inserted into the bore.

Preferably, a wear-resistant block is further fixed on the inner wall of the elastic swing arm, and the wear-resistant block is matched with the outer end of the pin in the protection piece.

Preferably, a rotatable roller is further connected to an end of the resilient swing arm.

Compared with the prior art, the utility model has the advantages of: the utility model discloses set up protection piece between valve rod and switch, and then made the extrusion end of valve rod can not directly contact with the extrusion switch to the extrusion end of valve rod has played effectual protect function and has taken place to damage because of the frequent extrusion of switch with the extrusion end of thoroughly avoiding the valve rod, and then has prolonged the life of valve rod by a wide margin in order to avoid the whole valve of changing, thereby has reduced the use cost of valve.

Drawings

FIG. 1 is a block diagram of the present invention;

fig. 2 is a sectional view of the protector according to the present invention.

Detailed Description

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of "first," "second," and the like in the description of the invention does not denote any order, quantity, or importance, but rather the terms "first," "second," and the like are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

To maintain the following description of the embodiments of the present invention clear and concise, detailed descriptions of well-known functions and components may be omitted.

As shown in fig. 1-2, an air valve with a protection function includes a valve body 1, a valve cap 2 fixed at one end of the valve body 1, a valve rod 5 movably disposed in the valve body 1, and a switch 3 disposed on the valve cap 2, the switch 3 includes a base 31 detachably fixed on the valve cap 2 and an elastic swing arm 32 rotatably connected to the base 31, one end of the valve rod 5 passes through the valve cap 2 and the base 31 and extends to the inner side of the elastic swing arm 32 to be matched with the inner wall of the elastic swing arm 32, one end of the valve rod 5 is further provided with a detachable protection member 4, the protection member 4 includes a housing 41, a pin 42 and a spring 43, the housing 41 is concentrically and detachably fixed at one end of the valve rod 5, one end of the housing 41 is provided with a threaded counterbore 411, correspondingly, an external threaded shaft 51 is formed at the center of one end of the valve rod 5, the threaded counterbore 411 is screwed on the external threaded shaft 51, a through hole 412 is formed at the center of the bottom surface of the threaded counterbore 411, the pin 42 is concentrically and concentrically inserted and disposed in the through hole 412, an edge 421 is formed at the outside of the pin 42, the counterbore 411, the movable spring 43 is disposed in a state, and disposed in the threaded counterbore 411, the flanging 421 and the spring 43 is always in a state, and pressed against both ends of the end of the spring 51 and the end of the spring 51 and the flanging shaft 51 and the end of the flanging shaft.

The outer diameter of the housing 41 is equal to the outer diameter of the valve stem 5.

A cavity 311 is opened in the base 31, and a protector 4 fixed to one end of the valve stem 5 is inserted into the cavity 311.

A wear block 33 is also fixed to the inner wall of the resilient swing arm 32, the wear block 33 cooperating with the outer end of the pin 42 in the protection member 4.

A rotatable roller 34 is also attached to the end of the resilient swing arm 32.

The working principle is as follows: fixing the air valve to the air pump, when the driving member presses the roller 34 at the end of the elastic swing arm 32 to swing the end of the elastic swing arm 32 toward the base 31 until the wear-resistant block 33 contacts the outer end of the pin 42, and when the elastic swing arm 32 is pressed further, the wear-resistant block 33 presses the pin 42 to contract inward and compress the spring 43, and when the spring 43 is compressed to the bottom, if the elastic swing arm 32 is pressed further, the end of the valve rod 5 will start to move in the valve body 1 by means of the pin 42 and the spring 43; as the drive member moves away from the end of the resilient swing arm 32 the valve stem 5 begins to return slowly and the spring 43 will push the pin 42 outwards with a spring return force until the outer end of the pin 42 clears the wear block 33.

In the process, the valve rod 5 is not directly contacted with the wear-resistant block 33, but indirectly contacted with the wear-resistant block 33 through the protection piece 4, and the buffer effect is realized by the mutual matching of the pin column 42 and the spring 43, so that one end of the valve rod 5 is effectively prevented from being worn to play an effective protection effect; when the pin 42 or the spring 43 is worn to a certain extent, the shell 41 is only required to be screwed to detach the shell 41, and then the pin 42 or the spring 43 is replaced, so that the operation is simple and the cost is low.

The utility model discloses set up protection piece 4 between valve rod 5 and switch 3, and then made the extrusion end of valve rod 5 can not directly contact with the extrusion switch to the extrusion end to valve rod 5 has played effectual protect function and has taken place to damage because of switch 3's frequent extrusion in order thoroughly to avoid the extrusion end of valve rod, and then has prolonged the life of valve rod by a wide margin in order to avoid the whole valve of changing, thereby reduced the use cost of valve.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in the embodiments and modifications thereof may be made, and equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides an air valve with protect function, includes the valve body, fixes valve gap, the activity in the valve body and locates the valve rod in the valve body and locate the switch on the valve gap that the switch includes that detachable fixes base and the rotatable elastic swing arm of connection on the base on the valve gap, and the one end of valve rod is passed valve gap and base and is stretched out the inboard of elastic swing arm and mutually supports with the inner wall of elastic swing arm, its characterized in that, the one end of valve rod still is equipped with detachable protection piece, protection piece includes casing, round pin post and spring, the concentric and detachable one end of fixing at the valve rod of casing, the screw thread counter bore has been seted up to the one end of casing, correspondingly, the one end center of valve rod outwards is formed with the external screw thread axle, the spiro union is established on the external screw thread axle to the screw thread counter bore cover, the through-hole has been seted up at the bottom surface center of screw thread counter bore, the round pin post alternates with one heart and sets up in the through-hole, the inside edge of round pin post outwards is formed with the turn-ups, the turn-ups activity is located in the screw thread counter bore, the spring is located and is in the screw thread counter bore and is in compression state all the time, the both ends of spring are tight screw thread axle respectively pushed up on the tip and turn-ups.

2. A gas valve with protection as claimed in claim 1, wherein the outer diameter of the housing is equal to the outer diameter of the valve stem.

3. An air valve with protection function as claimed in claim 1, wherein the base has a cavity hole formed therein, and the protector fixed to one end of the valve stem is inserted into the cavity hole.

4. A gas valve with protection function as claimed in claim 1, characterized in that a wear-resistant block is fixed on the inner wall of the resilient oscillating arm, said wear-resistant block cooperating with the outer end of the pin in the protection member.

5. A valve as claimed in claim 1 wherein the resilient arm is pivotally mounted at the end thereof to a roller.