JPS5847179A - Dispenser pump - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Summary of the Invention Dispenser pumps are suitable for dispensing bulk articles such as pickles or relish. Non-return valves (8,9
) is C! # type flap valve to provide maximum passage. The nozzle (19) K of the pump has a rest I at its outlet.
- Install (33). Rest lifter opening ($0)
is selected to be a suitable diameter for the particular article, for example 9 to 10,111, to allow vigorous ejection of the article and to prevent the article from dripping from the nozzle when the pump is idle. The rest lifter may be rigid or elastic as shown, and the nozzle may alternatively or additionally be provided with a valve to enlarge the inlet (65) to the pump outwardly. The present invention relates to a dispenser pump, and this general purpose pump is well known in the art. belongs to. These have a piston cylinder in which the piston is actuated, the introduction of the substance into the cylinder takes place via a non-return valve, and an outlet for discharging the substance from the cylinder via the hollow rod of the piston and an outlet nozzle. Also, the evacuation of the substance is carried out by forcing a piston into the cylinder. It is used for @. Traditionally, these types of substances have been sauces, detergents, cleaning gels, etc. However, problems may arise if the ζOsO pump is used on phishing items. Valve openings in pumps When dispensing articles such as pickles or relish containing particles of size comparable to the size of the pores, these retaining particles often clog the pump, causing it to tAm.
Due to its weight* and viscosity, the flow-like product that is not used for KN drips from the pump nozzle.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a dispenser pump that can be used with fluid products without the problems of dripping or dripping that may occur when conventional dispenser pumps are used with fluid products. Sui Koto de Ame. The pump includes a large passageway and a valve opening, and also includes means for limiting the amount of product that may drip from the nozzle outlet when the product is not being dispensed.

According to the invention, there is provided a pump in which the check valve governing the introduction into the pump cylinder is a flap valve that can only be opened upwardly. Controls the discharge of goods from ζ, which also depends on the flap valve. The flap valve has ζOI! when the aperture is open. Because the flap valve is constructed and installed so that the opening is approximately the same width as the inside diameter of the pump body, the flap valve is less prone to clogging forces than valves of the type that restrict the flow of material even in its open state. A further advantage of the flap valve is that it is integrally molded from a plastic material such as polypropylene.

They are therefore cheap and compact to manufacture; in a particular form they consist of a disk surrounded by a simple ring, and are connected by means of hinged parts. This type of valve is called a "C-shaped" flap valve.

The upper pump body has a dispenser head attached thereto which serves as a means for actuating the pump and guiding the pumped article from the upper flap valve to the outlet of the dispenser head and is preferably removable. installed by a suitable nozzle section.

In accordance with a further aspect of the invention, means are provided for reducing or eliminating the free volume at the actual exit of the nozzle.

This is the volume that can freely drop out of the nozzle outlet when an article remains and this article is not aliquoted.This means, conveniently referred to as the blocking means, is a flexible and It can be configured to be placed behind the outlet of the material tubular valve, which can be used in place of, or preferably in addition to, the upper flap valve. The tubular restrictor 1 valve is inserted into the nozzle part by any means, such as by integral molding, adhesive, snap-fitting, or by an open end held in place between the removable nozzle part and the dispenser head body. will be fixed. In the latter case, the nozzle section and valve can be easily removed for cleaning or renewal.

As an alternative or in addition to a valve in the nozzle part, a rigid or resilient rest vpp can be fitted at its outlet end to narrow the passage of the nozzle to a reduced cross-sectional area by only a short distance (as a blocking means). The provision of a rest lifter has the advantage of retaining bulk articles within the nozzle and eliminating the aforementioned resilient sleeve valve. Restric I can be used at the factory or by the user]
(Usually the latter) Attached to the nozzle outlet and usually 4 to 1
Selected from rest lifters having orifice dimensions typically ranging from 7 to 10% to 2%, the specified article! The dimensions are designed to be effective for the dimensions of the bulk product, allowing a wide range of bulk products to be handled by the dispenser, and all other parts to be placed uniformly within that range.・The above nozzle part has two important features.
The entire feed side of the head can be removed so that nozzle sections of different lengths can be provided with a single dimensional molding of the head body. This means that the manufacturer or user (usually the former) can select an arbitrary range of bypass ``strokes'' when dispensing items from the head, depending on the dimensions of the container in which the pump is to be used. Sussu.

Second, any range of spout lengths can be used with any range of restrictors to further expand the range of applications of the pump.

Furthermore, it is a feature of the invention that when handling highly viscous or non-flowing articles, the tube foot at the bottom of the container can be fitted with an outer surface that covers its inlet and extends downward and outward. Let's meet. This time, it is important to note that this will significantly reduce the tendency of this type of article to bridge and form a permanent funnel-shaped recess, providing a passageway through which air, rather than the article, is drawn by the pump. I stopped it.

Specific embodiments of the invention will now be described with reference to the accompanying sections.

The illustrated pump comprises an upper pump body 1 which fits slidably and sealingly inside a lower pump body 2. A sealing part 3 similar to a piston head is integrally molded with the upper pump body 1 in this embodiment.

A threaded retaining collet 4 is provided and screwed onto the pump body 1, both cooperating with protrusions 5 on its outer surface to secure the pump to the container and blocked by protrusions 6 on the lower part of the upper pump body 10. This limits its upward movement resulting from the upward bias imparted by spring 7. The lower and upper pump bodies 1.2 are each provided with a C-shaped flap valve 8.9 at their lower and upper ends, respectively. These C-shaped flap valves are prevented from opening downward by a local constriction 10.11 on the inner diameter of the pump body. Each of the flap valves is integrally molded from polypropylene, and each has an external ring/12 and further comprises an internal flap 15 and an integral membrane hinge 14 for interconnection which is thinner than the ring and flap. The lower flap valve is held by a spring 7 which presses its outer ring against the weave formed by the constriction p part 104C.A dispenser head 15 is provided at the upper end of the upper pump body in snap engagement therewith. is the protrusion "6" above C! The outer ring of the #-shaped flap valve 9 is held in pressure contact with the ys5 of the upper pump body 1, and is fitted into the recess in the pump body 1t-dispenser head 15, and the b0 dispenser head 15 is further provided with a protruding handle 17 and an internal passage 18. A dispenser head outlet violet guides the dispensed article from the upper C-shaped flap valve 9. The nozzle spout 19 is removably connected to the sidi ventr head 15 by a snap connection. Nozzle neck piece 2IC) External station sFc annular projection M,
20 is the inner circumference s#c of the dispenser head end 1112M
The corresponding box-shaped concave @222fR fits. A hub 32 is provided at the bottom of the nozzle spout 19, and this rib fits into a cut-out recess at the end of the head 15 to keep the nozzle outlet 50 of the spout accurately downward.

A set of nozzle spouts 19 is available to the manufacturer or user and these have different lengths to deliver articles at longer or shorter distances from the axis of the body 1. Selection of a suitable one is usually made by the manufacturer before shipping the pump.

A rest lifter 33 is snapped into the nozzle 30 by means of ribs and grooves similar to portions 20.22. The orifice of the rest lifter has a diameter selected with a view to preventing dripping of particular bulk articles, or has a diameter in the range of articles for which the dispenser will be used. Examples of orifice diameters are 7 m and 10 m, and to set a range of spout lengths, manufacturers may supply a number of rest lifter orifices to suit the user's choice. Because the dispenser as a whole can be easily adapted to the efficiency of the application.

In a second embodiment, seen in FIG. 2, a step 24 formed in the nozzle spout and another step 25 formed in the inner surface of the dispenser head end piece snap the nozzle spout into the dispenser head exit. When engaged, a recess is formed. This recess is used to capture the open end of the tubular restrictor 1 flap valve 27, the mouth end of which is folded outward and rearward to lie parallel to the remainder of the mouth end member and lie within the recess. The nozzle end piece is held there by the projection and step 25. The tubular flap valve 27 has its squeezing force end 4 portion 29 as the nozzle opening! 10
The nozzle is located adjacent to the nozzle to reduce the free volume behind the nozzle, thereby allowing the article to be subjected to gentle force application.

Thus, the "tubular restrictor" flap valve and nozzle can be easily removed for cleaning or replacement. The invention can be practiced with either or both of the restrictor cuff flap valve 27 and the upper C-shaped flap valve 9.

The pump also has a regular pipe body! +1 to lower pump body 2
Attach it to the protrusion and cut it to the appropriate length. According to another aspect of the invention, a magnifying platform 34 can be attached to the bottom of the tube. It has a spline foot 35 located at the bottom of the container. The articles to be divided are suctioned through the gaps in the splines.

It has now been discovered that the provision of a pedestal such as a ridge facilitates the removal of viscous or non-flowable articles; A funnel-shaped recess is formed in the vicinity so that air, not articles, tends to be sucked in by the pump. Although the reason for this is not entirely clear, it appears that the provision of an outwardly expanding stone "roof" would largely prevent the above problems.

Additionally, an alternative or additional nozzle rest lifter at the nozzle outlet can be made of a resilient material and can expand to allow large particles to pass through, while contracting to prevent dripping.

An example is a simple elastic sleeve or restrictor as seen in Figure 5. This is a roughly hemispherical rubber molded body 56.
and an equatorial flange 3 with a folded bead 38
It has 7. The flange and bead are nozzle spout part 1
9 and a nozzle outlet piece 39, which can be fixed hydraulically, for example, by ultrasonic welding. i having a diameter of Am, a relatively large mass if the article is actively evacuated by the action of a pump;
In other words, it will allow up to 121111 to pass through.

The provision of a rest lifter 33 or t-136 or valve 27 reduces the volume present behind the outlet end where the article may remain and drip (slowly) during the working stroke of the pump. .

Alternatively, in the case of a rest lifter suitable for the valve, the effect of removing its volume can be obtained. A valve or rest lifter with an aperture selected to be appropriate for the article will retain the article during idle periods and will not impede evacuation of the article during the working stroke of the pump.

[Brief explanation of drawings]

Figure 1 is a sectional view of an example of a pump equipped with a rest lifter, Figure 2 is a sectional view of a pump supply spout equipped with a tubular valve, JIK 3 is a perspective view of the tubular valve, and Figure 4 is a C-shaped flap. A plan view of the valve, and Fig. 5 is a sectional view of the nozzle outlet showing another form of the rest lifter. 1-・Upper pump body 2・Lower pump body 3
...End Part 4...Correct 5.6...
・Protrusion 7... Spring 8, -9... C-shaped flap part 10.11... Squeezed part 12... External ring 13.
・・Internal flap 14・・Thin film hinge 15・・Dis-fusa 6・・Protrusion part 17・/1・Internal path 19・・Nozzle spout part Outlet violet/annular protrusion 21... Nozzle end piece 22... Annular recess 23... Dispenser head end 24.25... Step part 27... Tubular throttle flap valve

Claims (1)

[Claims] (1) A pump cylinder in which a piston operates, and a check valve that introduces a substance into the cylinder.2. Dispenser pumps comprising a hollow rod end of the piston and an outlet for discharging the substance from the cylinder via an outlet nozzle, in which the substance is expelled from the pump by forcing the piston into the cylinder, making the pump suitable for dispensing bulk articles. In order to prevent this, the check valve (8) is a flap valve and the blocking means C27,5 is used.
3,56) is provided in the nozzle part (19°19) to reduce the volume behind the outlet end (30) of the nozzle so that when the pump is idle, the article drips through the outlet. is a dispenser pump featuring a remover. ■ The second reverse valve (9) is provided at the head of the hollow body (1) of the pump, and this is also a flap valve.Claim 1
Dispenser pump as described in section. c5) The flap valves (8, 9) are plate bodies (13) made of plastic material, which are connected to an annular body (12) made of the same material.
3. Dispenser pump according to claim 1 or 2, characterized in that it is surrounded by a hinged connection (14) and connected to said plate (13) by a hinged connection (14). V) The blocking means is a check valve (27), which is connected to the outlet C.
30) The dispenser pump according to any one of claims 1 to 3 attached to the spout of the rear nozzle part (19).
1714. A dispenser pump according to any one of claims 1 to 1713, wherein the dispenser pump is J and has a handle attached to the outlet (30) of the nozzle. The dispenser pump according to claim 5, wherein the restriction valve (63) is rigid. Dispenser pump according to claim 5, characterized in that the restriction valve (36) is elastic. (B) When the outlet opening (30) of the restriction valve is in a relaxed state,
Part IIs, Paragraph 2, Section 6 of the patent claim that serves a diameter of ~1Qw
Dispenser pump according to item 7 or item 7. Q) The nozzle part (19,1?') is made of an OG material separate from the hollow rod body (1) of the piston (1B), according to any one of claims 81s1 to 8. dispenser pump. (10) Covering the article entrance (35) into the cylinder with a downwardly and outwardly expanding roof (34) Particular 1iv - Requirements Clauses 1-1? The dispenser pump according to any one of Jj[.