CN209758054U

CN209758054U - Piston for aerosol

Info

Publication number: CN209758054U
Application number: CN201920297297.0U
Authority: CN
Inventors: 戴树林; 洪昌兴; 徐垚; 刘磊
Original assignee: ANHUI GOODWILL PRECISION COMPONENTS Co Ltd
Current assignee: ANHUI GOODWILL PRECISION COMPONENTS Co Ltd
Priority date: 2019-03-10
Filing date: 2019-03-10
Publication date: 2019-12-10
Anticipated expiration: 2029-03-10

Abstract

The utility model discloses a piston for aerosol, including setting up in the jar internal and in it complex piston body, the lower part of piston body be with jar wall complex shirt rim, the upper portion of piston body be with jar mouthful near complex hunch shoulder, the up end of piston body be with valve rod complex coronary concave station, hunch shoulder and coronary concave station on be equipped with clearance holding device. The clearance retaining device can prevent the piston from being in contact sealing with the tank body or the valve rod, thereby ensuring the smooth gas channel.

Description

Piston for aerosol

Technical Field

The utility model relates to an encapsulation structure of aerosol, especially a piston for aerosol.

Background

After the valve is opened, the sealing structure of the aerosol can attract the bottom of the valve at the crown part of the piston to be close to or the arch shoulder to be close to the arch shoulder of the tank body (defined as vacuum induced attraction) due to the pressure difference near the flow hole of the valve rod, so that deformation (defined as vacuum induced deformation) occurs, and the piston is in contact with the valve before reaching the maximum stroke or the piston arch shoulder is in contact with the arch shoulder of the tank wall of the tank body to form sealing (defined as vacuum induced sealing), so that products at the piston arch shoulder and the arch shoulder of the tank body cannot be extruded through a channel of the valve rod, and the products are still left in the tank body, thereby causing waste. In order to compensate for the waste caused by the residue, the filling amount is increased on the basis of the standard filling amount, so that the product can be stored in a sufficient amount, and the cost of the product is increased.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a simple structure can guarantee that the gas channel is unblocked, avoids the remaining piston for the aerosol of product.

In a further aspect, the gap retaining device cooperates with the spout and the valve stem to form a fluid passageway.

In a further aspect, the gap retaining means is a rib disposed on the abutment and the crown recess, and the rib is disposed along the axial direction of the piston body. The convex ribs are uniformly distributed on the circumferences of the arch shoulder and the crown-shaped concave platform and are continuously arranged or arranged at intervals.

Still another solution is that the gap maintaining means are grooves provided on the abutment and the crown and that the grooves are provided along the axial direction of the piston body. The grooves are uniformly distributed on the circumferences of the arch shoulder and the crown-shaped concave platform, and the grooves arranged on the arch shoulder are continuously arranged.

Compared with the prior art, the utility model discloses the piston for aerosol that obtains, simple structure reasonable in design under the condition that does not change whole filling structure, has guaranteed the noncongestion of vapour passageway, has avoided the improper sealed problem because of the vacuum induction leads to, has stopped the remaining problem of product to the cost of product has been reduced. Meanwhile, only the structure of the piston body is improved, and the structures of the tank body, the tank cover, the valve rod and the sealing plug are not adjusted, so that the filling structure can be directly used on the existing filling structure, the technical improvement cost is low, and the filling structure is extremely easy to popularize and use.

Drawings

Fig. 1 is a perspective view of a piston for an aerosol according to example 1.

FIG. 2 is an assembly structure view of a piston for an aerosol according to example 1.

Fig. 3 is a perspective view of the piston for aerosol according to example 2.

Fig. 4 is an assembly structure view of the aerosol piston according to example 2.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Example 1.

As shown in fig. 1-2, the piston for aerosol described in this embodiment includes a piston body 2 capable of being disposed in and engaged with a can body 1, a skirt 3 engaged with a can wall is disposed at a lower portion of the piston body 2, an arcuate shoulder 4 engaged with a vicinity of a can mouth is disposed at an upper portion of the piston body 2, a crown-shaped recess 5 engaged with a valve stem is disposed at an upper end surface of the piston body 2, and a gap retaining device is disposed on the arcuate shoulder 4 and the crown-shaped recess 5; the clearance retainer cooperates with the canister opening and the valve stem to form a fluid passageway. The gap keeping device is a convex rib 6 arranged on the arch shoulder 4 and the crown-shaped concave platform 5, and the convex rib 6 is arranged along the axial direction of the piston body 2. The convex ribs 6 are uniformly distributed on the circumferences of the arch shoulder 4 and the crown-shaped concave platform 5. And the convex ribs 6 are arranged on the arch shoulder 4 at intervals to form a dotted line structure.

Example 2

As shown in fig. 3-4, in the piston for aerosol described in this embodiment, the gap maintaining means on the piston body 2 is a groove 7 provided on the abutment 4 and the crown-shaped recess 5, and the direction of the groove 7 extends in the axial direction of the piston body 2. The grooves 7 are uniformly distributed on the circumferences of the arch shoulder 4 and the crown-shaped concave platform 5, and the grooves 7 arranged on the arch shoulder 4 are continuously arranged.

Claims

1. A piston for aerosol is composed of a piston body matched with the can body and arranged in the can body, a skirt matched with the can wall and arranged at the lower part of the piston body, an arch shoulder matched with the position near the can mouth and arranged at the upper part of the piston body, and a crown-shaped recess matched with valve rod and arranged on the upper end surface of the piston body.

2. The piston for an aerosol as set forth in claim 1, wherein said gap retaining means cooperates with the mouth and the stem to define the fluid passageway.

3. The piston for aerosol as set forth in claim 1 or 2, wherein the gap maintaining means is a rib provided on the shoulder and the crown-shaped recess, and the rib is provided along the axial direction of the piston body.

4. The piston for aerosol as set forth in claim 3, wherein the ribs are uniformly distributed on the circumference of the shoulder and the crown-shaped recess, and the ribs are continuously or intermittently arranged.

5. A plunger for aerosol according to claim 1 or 2, wherein the gap retaining means is a groove provided in the abutment and the groove is provided in the axial direction of the plunger body.

6. The piston for aerosol as set forth in claim 5, wherein the grooves are uniformly distributed on the circumferences of the abutment and the crown-shaped recess, and the grooves formed on the abutment are continuously formed.