JPS58131386A - Hose for peristaltic 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 The present invention relates to a rounded hose for use in a piston pump.

The hoses used in dynamic pumps are made up of mounting members that are subject to a lot of stress and that require a lot of support.

Therefore, it is necessary to provide a hose that better withstands the repeated stresses to which it is subjected. Such hoses should, on the one hand, have a long service life even if they have the disadvantage of rapidly reducing their suction capacity, and on the other hand they should be suitable for conveying a large number of products. It is.

It is an object of the present invention to meet all of these requirements by providing a modern hose for a hydraulic pump.

This new hose has a tubular central core made of natural rubber or elastomer with no connecting surfaces: 30 to 60 mm with respect to the longitudinal axis of the core in the form of gauze with a mesh of 0.5 to 1 mm.
a first reinforcement disposed on the outer surface of the cough core, positioned to form an angle of (preferably 45°); a layer of non-vulcanizable rubber deposited on the first reinforcement; It consists of a second reinforcing agent placed on top of this layer of rubber and a non-connecting sheath made of natural rubber.

According to a preferred embodiment of the invention, the thickness ratio between the struts of the hose is such that the reinforcement and rubber layers substantially increase the total thickness h of the hose as measured from the inner surface of the core. This is the proportion of Also advantageously, the thickness of the rubber layer is equal to 11 IJ.

The hose according to the invention furthermore comprises at least one end flange which is attached by bonding vulcanization to one end of a connecting-surface-free solid cylinder hose which is otherwise made of natural rubber. If only one flange is attached to the hose, it is advantageous to equip the hose with a stop ring made of natural rubber without a connecting face. This stop ring forms a removable 7-flange support and is attached by a connecting 7JlJ sulphate at the other end.

The hose according to the invention includes a guide ridge applied along one of its externally generated lines by the coupling force at the crossroads.

The present invention will be more easily understood from the following description with reference to the accompanying drawings.

FIG. 1 is a longitudinal sectional view of a hose according to the present invention.

FIG. 2 is a cross-sectional view taken along line -11 in FIG. 1.

FIG. 5 is an external partial view of the core equipped with the first reinforcing gauze.

FIG. 4 is a longitudinal sectional view of the complete hose with stop ring, flange and ridge.

Figure 5 is a cross-sectional view taken along the line ■-■ in Figure 4.

With reference to FIGS. 1, 2 and 3, starting from the inside, these are made of natural rubber (natural rubber as well as synthetic rubber in general in the field of painting technology) without connecting surfaces; i.e. made by extrusion or roving,
and a central core 1 that is not made by molding.
A hose according to the invention is shown containing tl-. It is also produced from an elastomer (chloroprene, butyl nitrile, a product known under the trade name 'Hypalon'). The core is then coated with a first layer in the form of gauze of 15 to 1 mm mesh and made of bolyamide, rayon or wire mesh.
covered with reinforcement. This gauze 2 is arranged relative to the axis 3 of the tubular core 1 in such a way that its warp and weft threads form an angle B of 30 to 60' with the longitudinal axis of the core.

Preferably, this angle is 45@.

On top of this first reinforcing agent a layer of non-vulcanizable rubber 4 and a second reinforcing agent 5 are applied. The structure of this reinforcing agent is selected in relation to the properties required for the hose and can be identical to that of the first reinforcing agent. The resulting assembly is then covered with a sheath 6 made of natural rubber. The hose obtained in this way has a number of advantages compared to hitherto known hose numbers. For example, the first stiffener can reduce core wear by inhibiting internal wear at the ends of the area constricted by the roller passages (this wear can puncture or damage the hose). Extend hose life.

This first reinforcement further limits the stress inside the entire hose assembly and the stress inside the core. This effect is carried out in particular by forming a holding element for the material conveyed by the rollers that squeeze the hose. The non-vulcanizable rubber serves as a retainer that holds the first reinforcing agent in the core and the second reinforcing agent and sheath in its interior portion. This is because the non-vulcanizable rubber passes through the gauze mesh due to its great plasticity and becomes the connecting element for the entire hose due to its bonding properties. This rubber also protects the hose against shear forces. After all, the choice of natural rubber for exterior packaging is determined by the quality of this material in terms of its elasticity and its ease of adhesion to freely available elements.

Various configurations of the hose of the present invention 4! It should be noted that the thickness of the layer is determined such that the rubber and the two reinforcing agents account for a certain fraction of the total thickness of the hose from its inner surface.

This arrangement gave the best results in testing.

Moreover, the thickness of the rubber does not exceed 1 yen. This is the optimum thickness in order to preserve all the qualities of the rubber without suffering any disadvantages, among them too much plasticity which adversely affects the behavior of the hose.

Figures 4 and 5 show the hose described above with the same reference numerals, except that it is equipped with removable elements. One of these elements is an injection-produced (ie without connecting surface) flange 7 made of natural rubber. The 7 langes 7 are inserted into the warped portions located at the ends of the hoses 1 to 6 by vulcanization bonding. A stop ring 8 is also attached to the other end of the hose by means of a crimp connection. This stop ring is also made by injection molding, so it has no connecting surface. This stop ring has a groove 8m for attaching 4L of removable 7 langes (not shown). Such a flange is attached in a manner similar to a socket-type attachment by means of notches provided in both the exterior of the stop R8 and the 7 flange.

Afterwards ribs 9 or ridges are attached over the entire length of the external generating line of the hose. Its function is to hold the hose in a central position inside the pump body.

Such ridges are also bonded and vulcanized and made of natural rubber.

In addition to the above-mentioned advantages, hoses made in this way are very durable. This means that the hose retains good elasticity during operation, and permanent deterioration caused by the constriction K caused by the pump rollers is limited. As a result, the volume of the pump chamber is better supported, the flow is more stable, and shape recovery is faster, allowing faster rotation or better filling of the pump chamber when pumping viscous products. enable,
Therefore you get better flow rate.

Furthermore, by using the hose according to the present invention, it is also possible to deliver pressure more smoothly. And since this hose is manufactured without connecting surfaces in any of its four constituent elements, it is more homogeneous and is therefore stronger than hoses manufactured by assembling or stacking flat members.

It should also be noted that the material constituting the core can be selected from and be, for example, elastomers suitable for conveyed products. Considering the properties of these nidistomers, they cannot be used as the sole component of the hose. This is because in very thick layers these materials cannot withstand such abrasion and tearing forces.

111 kK, this hose is such that only the core contacts the pumped product (with the aid of a #8 connecting sleeve) as shown in FIG. Therefore, regardless of the product, the hose end SS material is made of natural rubber. It is convenient for the length of the hose to be such that once the pump body is attached, it can be squeezed at both ends. This prevents the risk of detachment of the removable member.

The invention has advantageous application in the manufacture of pumps. The present invention is in no way limited to what has been described above, but is intended to encompass any modifications that may be incorporated herein without departing from the scope and spirit thereof.

[Brief explanation of the drawing]

FIG. 1 shows the vertical Ir? of the hose according to the present invention. It is a front view. FIG. 2 is a cross-sectional view taken along line 1--1 of FIG. FIG. 3 is an external partial view of the core equipped with the first reinforcing gauze. FIG. 4 is a longitudinal sectional view of the complete hose with stop ring, flange and ridge. FIG. 5 is a cross-sectional view taken along *V-V in FIG. 4. In the figure: 1... Tubular core; 2... First reinforcing agent gauze;
... Vertical axis of the core; 4... Layer of non-sulfuric rubber; 5...
・Second reinforcing agent; 6... Exterior; 7... Flange; 8
... Stop pipe; 8 & ... Stop ring groove: 9...
・Rumps. Patent applicant Société Anonyme D'Erasco Agent Patent attorney Ryo Kawase Yoshido Patent attorney Takehiko Saito Procedural amendment (method) October 20, 1980 Commissioner of the Japan Patent Office Shima 1) Haru Kiri Tono 14 indications Showa 1956 Patent Application No. 1 sosos 2, Name of Invention Hose for Emotional Pump 3, Relationship with the person making the amendment Case Name of Patent Applicant Anonymous Date Plus Score ≦
・Name Patent Attorney (6323) Ryoji Yose, Qr J
j', J. 5. The handwritten specification shall be amended into a T-type engraving and the official drawings shall be submitted in accordance with the attached document 111 and drawing 6, contents of the amendment. However, there is no crocodile law.

Claims (1)

[Claims] t. Tubular central core made of natural rubber or elastomer, without connecting surfaces: a mesh of a5 to 1 m 1 m is arranged on the outer surface of the core in the form of a gauze, and the longitudinal axis of the core A first reinforcing agent positioned at 30 to 60 @ against the surface; a non-vulcanizable rubber layer; and an outer casing made of natural rubber without a connecting surface; hose. 2. The layer of reinforcing agent and the non-vulcanizable rubber accounts for approximately the thickness of the hose, measured from its inner surface, in %ffl! The hose described in item 1 of the scope of demand. 5. The hose according to claim 2, wherein the thickness of the rubber layer is substantially equal to 1 inch. The hose according to claim 5, wherein the first reinforcing agent is inclined at an angle of 45° with the longitudinal axis of the core. & The hose is made separately from natural rubber and has no connecting surface.
A hose according to claim 1, further comprising an end flange attached by bonding vulcanization of one end of the hose. Melon The hose is made of natural rubber and has no connection surface *a
6. An FFI hose as claimed in claim 5, including a stop ring forming a support for the removable flange and crimped by bonding vulcanization at the other end. 1. A hose according to claim 5JX, wherein the hose includes a guide ridge made of natural rubber attached along the line of origin of the hose by bonding vulcanization.