FR2789736A1 - Peristaltic flow pump for pumping wine has pump cylinder with rolls driven by chain and pressing along oval or circular-shaped pipe - Google Patents

Abstract

Peristaltic flow pump comprises pump cylinder (1) including rolls (10) driven by chain (11) and applying pressure along pipe (12) containing wine. Pipe can have oval transversal cross-section so that compression height is smaller than for circular cross-section pipe. Liquid in pump cylinder allows pump to rapidly go back to original shape.

Description

The subject of the present invention is a pump of the peristaltic type.

  intended in particular to pump products from

winery.

  Current peristaltic pumps generally consist of three rollers mounted on a rotating star structure offset by 120 and which are intended to effect, at low speed, a progressive crushing of a curved part of a tubular element or pipe so that the alternation between compression and loosening of said pipe generates a continuous return of the fluid transported by this

  last and a constant flow of repression.

  Also known are linear peristaltic continuous flow type pumps such as that described in document PCT9600780 comprising a primary internal tube intended to contain a primary fluid to be pumped, an external jacket containing a secondary fluid and compression means capable of producing periodically. peristaltic compression waves along the pipe so that

  induce a flow of primary liquid through it.

  However, these pump devices do not respect the physical integrity of the products to be transported, especially if they are heterogeneous and fragile like the products

from the harvest.

  Generally the passage of compression means such as rollers or rollers the pipe flattens then resumes, due to its elasticity and the fluid

  that it carries, its initial shape.

  The efficiency is proportional to the speed of rotation of said compression means and to the structure of the pipes used and it is therefore necessary to have an optimum efficiency to use specially adapted pipes which have a high coefficient of elasticity doubled by certain rigidity which increases the cost of using such pump devices. In addition in the wine sector, the products from the harvest must be transported in flexible pipes and not of a certain rigidity. The object of the present invention is to remedy these drawbacks by proposing a pump of the peristaltic type making it possible to adapt to any type of pipe and in particular to flexible pipes used in the wine sector while offering a high yield. The pump device according to the invention comprises a pump of the peristaltic type comprising a pump body containing compression means capable of periodically producing peristaltic compression waves along the transport pipe and is characterized in that said pump body is waterproof and completely filled with a liquid element. Thus, when a compression means leaves the pipe, the part of the pipe flattened by the latter tends to quickly return to its initial shape by a suction effect due to the presence of the liquid in the pump body. According to an additional characteristic of

  the invention the liquid is a fluid oil for food.

  According to the invention the pump device according to the invention comprises at least two compression means equidistant two by two and the distance between them is calculated so as to always have at least one

  compression means resting on the pipe.

  According to another additional characteristic of the invention, the compression means are rollers or rollers. In a first embodiment the pipe is straight and horizontal in the pump body and the compression means are moved along the pipe by a carousel

arranged above the latter.

  In a second embodiment of the pump device according to the invention, the pipe has a semi-circular curved shape in the pump body, and the compression means are mounted on a rotor ensuring compression

  rotating said pipe on its curved part.

  The advantages and features of this

  invention will emerge more clearly from the description which

  follows and which relates to the attached drawing, which represents

  a non-limiting embodiment.

  The figure shows a schematic longitudinal sectional view of the pump device according to the invention in a preferred embodiment. It can be seen in the figure that the pump device of the peristaltic type according to the invention consists of a pump body 1 containing three equidistant rollers 10 driven by a chain 11 intended to impose on a pipe 12 of circular, rectilinear and arranged horizontally in the pump body 1, peristaltic constrictions

  causing the displacement of the product 2 which it carries.

  The chain 11 is stretched, parallel to the pipe 12, between two toothed wheels 13, the axis 13 'of each wheel 13

  of axis 13 ′ is horizontal and perpendicular to the pipe 12.

  The distance between the rollers 10 is calculated so as to always have at least one roller 10 resting on

the pipe 12.

  The toothed wheels 13 are rotated by

drive means not shown.

  The pump body 1 is filled with a liquid, not shown, which can be for example a fluid oil of food quality, so as to occupy all the free space

internal of the pump body 1.

  Thus, after the passage of a roller 10 over the pipe 12, the presence of the liquid which occupies the entire internal space of the pump body 1 will have the effect of creating, at the level of the flattened area of the pipe 12 by the roller 10 , a depression allowing the pipe 12 to quickly return to its initial shape with the effect of generating in its middle a

  depression causing product 2 to be treated.

  It will be noted that the pipe 12 can have an oval cross section so as to have a compression height less than that of the circular cross section pipe described above while retaining the

  same volume and identical flow.

  The liquid present in the pump body therefore allows the pump device according to the invention, in addition to the elasticity of the hose, to return to its initial shape more quickly after the passage of a roller 10 or any other similar means of compression. and greatly increase the suction capacity of the pump. In addition, the pump according to the invention makes it possible to operate with flexible hoses which are particularly suitable for the transport of the harvest and which, with the current peristaltic type pumps, would only very easily or not resume their initial shape after passage.

compression means.

Claims (7)

  1) Peristaltic type continuous flow pump comprising a pump body (1) containing compression means (10) capable of imposing on a transport pipe (12) of a product (2) constrictions moving along said pipe (12) characterized in that said pump body (1) is sealed and   completely filled with a liquid element (2).   2) Continuous flow pump according to claim 1 characterized in that the liquid element (2) is an oil food fluid.   3) Continuous flow pump according to claim 1 or 2 characterized in that it comprises at least two compression means (10) equidistant two by two and whose distance between the latter is calculated so as to always have at   less a compression means (10) resting on the pipe (12).   4) Continuous flow pump according to any one of   previous claims characterized in that the means   compression are rollers or rollers (10).   ) Continuous flow pump according to any one of   previous claims characterized in that the pipe   (12) is straight and horizontal in the pump body (1).   6) Continuous flow pump according to claim 5 characterized in that the compression means (10) are moved along the pipe (12) by a carousel arranged above of the last.   7) Continuous flow pump according to any one of   claims 1 to 4, characterized in that the   pipe (12) has in the pump body (1) a semicircular curved shape, and in that the compression means (10) are mounted on a rotor ensuring compression   rotating on the curved part of said pipe (12).   8) Continuous flow pump according to any one of   previous claims characterized in that the pipe   (12) has a circular or oval cross section.