JPH05505863A - 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] Pop The present invention features a pump housing that has a cylindrical shape! inside this pump housing An eccentric wheel that can be driven in rotation and a feeder located between the pump housing and the eccentric wheel. The 2gI core ring containing the medium to be crushed crushes the medium towards the inner wall of the housing. The present invention relates to a pump consisting of a flexible tube that feeds by peristaltic motion.

A pump of the above-mentioned type is known from Swiss Patent No. 411 582 Fgjgw. ! This pump pumps a small amount of liquid, for example a chloride solution, into the flotation tank. this place The flexible tube, which is elastically deflected, is approximately It is wrapped twice. The tube roller is moved along the eccentric track by the rotational drive of the shaft. The flexible tube is then rotated so that the surface of the roller touches the inner wall of the pressure element in the housing. is locally crushed at the location closest to the In this way, the liquid enters the flexible tube. It is pumped from the mouth towards the outlet. Due to the free space around the provided flexible tube, this The flexible tube can only absorb relatively small pressures (1 to 2 bar) and 1 In other cases, 1 the flexible tube is able to expand and ruptures when a bursting pressure is reached. Ru. In addition, the flexible tube is actually restrained during direct support on rollers (11 cores). Performing impossible kneading movements may result in operational problems or failure of the pump. It became clear that it might disappear.

What is the problem of this invention? Improved the N class pump mentioned at the beginning to achieve much higher operating pressure. to ensure good operating characteristics and a long service life for the flexible tubes used. It is to do so.

According to the invention, this problem is solved by the fact that the flexible tube is connected continuously inside the pump housing. surrounded, so that any Na medium is first of all under more pressure +j The solution is that it can be sent in 6 to 10 vars. on the other hand i A flexible tube arranged between a flexible tube and an eccentric ring, preferably consisting of multiple parts, is one flexible tube. The tube is no longer kneaded, allowing the useful life of the flexible tube to be increased.

In a ring preferably consisting of a plurality of parts, the parts of this ring are ν biased according to the present invention. Rollers parallel to the core ring axis and arcs of approximately equal thickness between these rollers It can consist of an arc-shaped piece or only an arc-shaped piece or only a roller. .

Possible! 1IIqI is wrapped around the shoulder of 1 core in the pump housing and the end curved approximately radially or axially outwardly at the ends thereof; They are lined up but separated by a wall to form the inlet and outlet of the pump. It is advantageous to have

Furthermore, the lLb ring that rotates from 9 to the outlet moves from the outlet side range of the flexible tube to the inlet side range. It is preferable that the m end is also temporarily crushed when it is crushed. Delicious. The pump can thereby be operated without using a back pressure valve.

A ring is used to prevent the flexible tube from being bent too strongly at the inlet or outlet. is an elastic material that protrudes between the flexible tubes arranged on the writing inlet side and the outlet side. It has a wedge-shaped filling piece made from material.

Advantageously, the flexible tube is square in cross-section. 1 crush by it In the shaped section, a shape more advantageous than the conventional round flexible tube cross section is obtained. Increases the useful life of flexible tubes that undergo heavy use. The flexible tube is made of silicone material. can be done.

Embodiments of the invention will be described in detail below with reference to the drawings.

FIG. 1 is a plan view of a pump according to the invention.

y2 is a selected sectional view of the pump by flffll.

FIGS. 3 and 4 respectively show one state in which no load is applied and the other state shown in FIG. Then, in the cross section of the flexible pipe of the pump according to Figure 1 in the crushed subsurface layer, be.

5 and 6 are plan views of the pump in two other configurations.

FIG. 7 is a partial view of the flexible tube arrangement on the inlet and outlet sides.

Figures 1 and 2 show a pump 1o with a pump housing 11. The pump housing has an approximately cylindrical outer shape and has a It can be attached to a commercially available electric motor using screws 13. The drive #m14 of this electric machine is port protrudes into the interior of the pump housing 11. This pump housing has an end in the evening. On the face! ! 12 is attached by the aforementioned screw 13. Thereby yen fl An F chamber 15 is formed inside the housing 11, and in this circular chamber there are 9 drives. It is fixed on the shaft 14.

An eccentric wheel 16 with a rolling bearing 16' attached to the top is rotatably provided. It is. The rolling bearing +6' ring configured as a ball bearing rotates together with the eccentric. The rotation 1 and the outer ring 1 are virtually stationary.

The flexible tube 20 is continuously surrounded by the pump housing 11; A flexible tube 25 is arranged between the flexible tube 20 and the C11 lift 16, and the ring is It surrounds the inside of the flexible tube 20. This 1125 is relative to the axis of +II core ring 16. 60" each over a circumference 16' of this biasing ring. Rollers 26 and 1 are distributed at intervals of It has almost the same thickness as 26 and has a l end face! 2 radii aligned with these rollers An arcuate piece 27 having a roundness 27' and a slit 27'' to increase flexibility. It fits. The roller 26 is made from alligator, while the arcuate piece 27 is made from plastic. Manufactured.

The flexible tube 20 is wound once around the four polarized wheels lθ or 14125 within the housing ll. ing. In principle, this flexible tube cannot be wrapped around an eccentric ring even with two or more turns. It can be done. At the end of the winding.

The flexible tube ends M20' are generally curved outward in the radial direction and are arranged side by side, ν A wall 29 then separates these flexible tube sections from each other. These flexible tube ends forms the inlet 21 or outlet 22 of the pump 10.

The wedge-shaped elastic filling piece 28 that is in contact with or attached to the MI 25 is a flexible tube. Is it possible to curve the end portion 2a' without being too strong? Thereby a higher useful life of the flexible tube You can get life. Moreover, the pseudo-contact surface with this flexible tube is also rounded and one filled piece is movably guided along the aforementioned wall 29.

The inlet 21 and the outlet 22 are suitable for absorbing a pressure of IO bar t. . In some cases, unreinforced am conduits or flexible 咓q! Providing the connecting piece II Turn? In this case the direction of rotation can be reversed just as well as it is This is another advantage of this pump. The rotating eccentric wheel 16 is the most Pulling the crushing of the auxiliary pipe 20 through the flexible pipe 15 in a far away outer range wake up The medium to be delivered 9 by the peristaltic action is pumped towards the outlet 22 . same The flexible tube 20, which opens again after one squeeze, absorbs the medium again from the entry 021.

If the crush moves towards the exit and further towards the entrance 21, the population will be 9. As for the flexible tube leading from the outlet to the outlet, both ends 20' of the flexible tube are temporarily crushed? that The arrangement is such that no back pressure valve is required on either the inlet or outlet side.

Due to the elastic configuration of the filling piece 28, this temporary pushing of the flexible tube end N2 Crushing can be achieved well.

With this pump according to the invention, delivery pressures of +6 to 10 bar can be achieved.

This pump must avoid contact with the T pump part.The food names are the same. It is especially suitable for sending such media. Seen from that? pumps in medicine Very well suited. Because with this pump the medium is absolutely sterile. This is because it can be sent. This pump can transport gases, liquids or even solids. It can be done. Moreover, this pump! For example, in highly corrosive or sensitive gourd areas. Contact of the medium with the pump parts must also be avoided, such as when He has left a particularly strong legacy in this area as well.

According to FIG. 3, the ν flexible tube 20 is formed into a substantially rectangular shape, and the long side of the flexible tube The surface rests on the ring 25. The flexible tube 20” shown in the dash-dotted line configuration is completely It is set in shape! Place this flexible tube in the uncrushed state one by one. (corresponds to the cross section formed by the pump housing 11 and the WI 425).

As you can see from t W 2, this makes the t flexible tube even more Fg! ii overall It can also be enclosed in a rigid round pot tube as shown in Figure 41. Although available! It is deformed much less than for example with a round cross section. Possible The flexible tube 20 is laterally reinforced, so that the flexible tube is connected to the inner wall of the housing. has greater abrasion resistance upon contact with The flexible tube 20 is actually a pump housing. The space for the flexible tube formed by the ring 11 and the ring 25 is injected into the injection mold. It is preferable that Wa is done in such a way that the This flexible tube is made of ordinary silicone material. It is made from a unique material that can be reinforced with fiber or woven fabric.

In Figures 5 and 6, only one essentially flexible tube is shown for the I pump lO. There is. These rings are therefore explained in detail below. +! provided in Figure 5! Shinrin 1 The ring 32 arranged around 6 has four arcuate pieces 32' in contact with each other. It consists of

The arcuate piece next to the inlet 21 or the outlet 22 has a wedge-shaped filling piece 32''.

The flexible tube 34 according to FIG. In this case, a roller 34' is provided.

The flexible tube 20 is directly connected to this! It is curved from 34 to entrance 021' or exit 22'. The inlet 21' and the outlet 22' are arranged substantially parallel to the axis of the eccentric. Each lid has one. Spacing 929' extends to the annulus and is radially movable. Since it is pressed against the ring by the spring 36, the ν distance @29f is always in contact with the ring and v do.

Instead of the distance N29', the flexible tube of the flexible tube 20 on the t outlet side is bent ML and the flexible tube of the lever is ! It can have a cam extending to and contacting the flexible tube 20 on the inlet side. This cam is surrounded by a spring adjustment plate! Therefore, the flexible tube 20G on the outlet side ! When establishing pressure, the flexible tube on the inlet side is crushed to prevent suction of the I medium. In Figure 7 According to t, it extends in the radial direction. Place something like this near the entrance and exit of the flexible tube 20. A cam 40 and a spring adjusting plate 42 surrounding the cam are provided.

Summary book The pump (10) has a cylindrical shape I! (15) forming the pump housing (11). - can be driven in rotation via one drive shaft (14) in this pump housing A single core II (16) is arranged. This eccentric axis is around the (ILb) Through the arranged flexible tube (25) - the flexible tube (2 0) inside the 9 housing I! (11') causes crushing. eccentric shaft The rotation of (16) causes the medium to be sent in a peristaltic motion within the flexible tube (20). flexible tube (20) is continuously surrounded by the pump housing (11)! That's it This pump (10) performs well even at higher delivery pressures of 6 L to 1 O bar. Enables good driving characteristics.

international search report

Claims (1)

[Claims] 1 A pump housing that forms a cylindrical chamber and a rotating drive within this pump housing. a movable eccentric and a pump to be fed placed between the pump housing and the eccentric; containing the medium, is crushed by the eccentric wheel towards the inner wall of the housing, causing the medium to move peristaltically. In a pump consisting of a flexible tube for dynamically feeding, the flexible tube (20) is connected to the pump housing. (11) and is continuously enclosed within the pump housing and eccentric wheel (16). ), preferably consisting of a plurality of parts (26, 27, 37', 34'). A pump characterized in that pipes (25, 32, 34) are arranged. 2. A roller (26) whose ring (25) is parallel to the axis of the eccentric (16) and an arcuate piece (27) of approximately the same thickness between these rollers. 2. Pump according to claim 1, characterized in that: 3 In order for the arcuate piece (27) to have flexibility in the radial direction, slits (2 7'') Pump according to claim 2, characterized in that it has 7''). 4. Arc-shaped pieces (37', 32'') are provided as parts of the ring (32). A pump according to claim 1, characterized in that: 5 As part of the ring (34), a roller (3 4') Pump according to claim 1, characterized in that a pump is provided. 6. A flexible tube (20) is installed around the eccentric ring (16) within the pump housing (11). wound and generally radially or axially outwardly at the end (20') curved and their ends are side by side but wall (29, 29') separated by to form an inlet (21, 21') or an outlet (22, 22'). 6. A pump as claimed in one of claims 1 to 5, characterized in that: 7 The flexible tube (20) moves from the inlet (21) to the outlet (22) through the rotating eccentric wheel (16). ) is temporarily squeezed from the outlet side range to the inlet side range of the flexible tube (20). One of claims 1 to 6, characterized in that both ends (20') are also crushed. number of pumps. 8 The flexible tubes (25, 32) are connected to the flexible tubes (20) arranged on the inlet and outlet sides. wedge-shaped filling pieces (28, 37'), preferably made of elastic material, protruding between 7. Pump according to claim 6, characterized in that it has: 9 The eccentric wheel (16) is attached to the drive shaft (14) and the rolling bearing ( 16) The port according to one of claims 1 to 8, characterized in that pump. 10 A claim, characterized in that the medium can be delivered at an operating pressure of 6 to 10 bar. 10. The pump according to claim 1. 11. Claims 1 to 10, characterized in that the cross section is substantially rectangular. One of them is a flexible tube for the pump. 12. Conventional silicone material that is elastic and deformable with long life span The flexible tube according to claim 11, characterized in that it consists of a.