DE2919342A1 - PUMP FOR SANITARY PURPOSES - Google Patents

Description

- J-

2919342 EYER & OUR PATENT LAWYERS

PATENT LAWYERS: DIPL. -INe. ECKHARDT EYER + PHYSICIST HEINZ LINSER

ROBERT-BOSCH-STR. 12A D-6O72 DREICH

P.O. Box 1O 221O Telephone (O 61 O3) 37 Telex 4 18S385 Telegrams Corvus

Applicant: Chen-Ilin Kuο

Mr. 48, Sliin Fu Road Pannhino CiLy

Tnipei, 'JSiwaii, II, O.G.

Pump for sanitary purposes

0300 * 9/0042

Description :

The invention relates to a pump for sanitary purposes, consisting of a tubular cylinder with an upper and lower opening, a flexible sealing cap which surrounds the lower cylinder opening and one in the Cylinder slidably arranged piston.

Pumps of this type for sanitary purposes are already known, which are used to clogged sewers from a to free the flow obstacle located in the pipe so that the wastewater can then flow away unhindered. Pumping this However, Art only exert a pressure, so that the flow obstacle in the pipe is often only compressed and thus the constipation condition is only aggravated. In addition, such pumps are complex structure and consist of a large number of individual parts, so that the production costs of such pumps are significant. In addition, most parts of the pump are made of metal, so that they rust easily, which the lifetime is shortened considerably.

The present invention is based on the object of remedying this situation and proposing a pump with which Help a suction and pressure function can be exercised and which, from as few and rustproof individual parts as possible exists, so that it has a safe function for a long time.

The solution to this problem is that in the pump mentioned at the beginning, the piston is a stable, sealing shut-off element comprises, consisting of an upper and lower flat annular disc with a sealing collar and a centrally attached and vertically extending pipe stump, which is in the hollow piston rod with

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f- ' ^S '

this is attached, which has a handle at its upper end and further that the upper cylinder opening a lid provided with at least two air outlets has through which the piston rod is guided centrally.

In a further development of the invention, the piston rod is welded to the ear stump.

According to the invention, the flexible sealing cap has a plurality of sealing edges in the band area of the bottom, so that this ensures the exclusion of air from the outside, which increases the effectiveness of the pump.

According to the invention, all parts of the pump are made of plastic and preferably made of PVC plastic.

The wastewater that comes into contact with the pump is in in the majority of cases aggressive and contains acids or Bases, so that metal pumps are attacked particularly quickly will. The use of plastic avoids these disadvantages. The pump according to the invention is able to exert both a pressure and a suction effect, so that even relatively stuck obstacles in one The drain pipe can be loosened by moving the piston back and forth several times.

Due to the simple structure of the pump with relatively little Individual parts can be easily assembled and manufactured inexpensively.

The invention is explained in more detail with reference to the drawing. Here show:

FIG. 3 is a perspective view of the pump, the lower part being cut away;

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FIG. 2 shows a corresponding view according to FIG. 1, however with a ripple cut;

Figure 3 is an exploded view of the pump according to Figures 1 and 2 and

FIG. 4 shows a perspective illustration in section of a pump in its function.

The "pump" shown in FIG. 1 consists of a tubular Cylinder 1, which is closed at its upper end by a cover 6 through which the piston rod 3 is guided and attached to the handle 2. The piston 4 is firmly connected to the piston rod 3 and the lower end of the tubular cylinder 1 is provided with the flexible sealing cap 5, which is described in more detail in FIG.

As can be seen from FIG. 2, there is a protective cap or disk 21 for the hand below the handle 2 the operator so that they do not come into contact with the means required by the pump, for example waste water comes .. With the position 23 below the handle is an opening for a pin 24 shown in Figure 3 is designated, which is used to establish the attachment between handle 2 and piston rod 3. At the top of the Cylinder 1 is the screw cap 6, which is provided with two air passages 61 through which the Pumping process, the air located above the piston 4 can escape and re-enter. The lower end of the Cylinder 1 is provided with a screw ring 12, which is used for fastening a lower flexible sealing cap 5 serves, which has several inner sealing edges 501, 502 and 503 in the edge area of the base.

FIG. 3 shows an exploded view of the pump from which shows all the individual elements and their assignment.

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The handle 2 has a protective disk 21 already shown in FIG. 2 and has a hollow cylinder part 22, in that the upper end of the piston rod 3 can be inserted and fixed. The attachment takes place with the pin 24, which is guided through the opening 23 in the hollow cylinder part 22.

The upper cover 6 clearly shows the air inlets and outlets, and the cover 6 is fastened with the aid of the screw ring 11, which is screwed onto the upper edge of the cylinder 1.

The piston 4, which consists of several parts, is fastened to the lower end of the piston rod "j . The piston 4 consists of two disks arranged one above the other, which are located within a sealing collar. The upper disk 41 has a centrally fastened and vertically aligned pipe stump 42, which is provided with an opening 43 for the passage of a fastening pin 44. A corresponding bore is located in the lower part of the piston rod 3j so that a stable fastening between the piston rod 3 and piston 4 is ensured.

With the lower end of the cylinder 1, the flexible and elastic sealing cap 5 with the help of the screw rings 12 and 51 attached. This sealing cap 5 can very easily through a cap of different sizes can be exchanged, so that an adaptation to different drain pipe diameters given is.

To improve the sealing effect, the sealing cap 5 provided with several inner sealing edges 50I, 502 and 503, these sealing edges are located in the outer edge area of the bottom, so that when the pump is placed Several annular chambers lying radially one behind the other are created on the floor, which significantly improves the sealing effect

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is improved.

The operation äev pump is described in more detail with reference to FIG M-. With the aid of the handle 2, the pump piston 4 is moved back and forth so that the obstacle 8 located in a drain pipe 702 is sucked in and removed very quickly. If the obstacle 8 is not completely removed, the filled pump can be removed and then the pumping process can be repeated.

The pump can also be operated in such a way that the piston is guided to the upper end in the cylinder tube Λ before the pump is placed on the drain pipe, so that then with the aid of the piston 4 a downward movement and thus pressure on the obstacle 8 in the drain pipe 702 can be exercised.

According to the experiments, there may be an obstruction in the drainpipe removed within 5 seconds and the tube cleaned.

Since all parts of the pump are made of plastic, the weight of the pump is only 0.7 kg. So that represents the pump according to the present invention for sanitary purposes is a suitable tool that is easy and practical can be operated and has a high degree of efficiency.

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Claims (5)

Pn tent nppriiche fij pump for sanitary purposes, consisting of a tubular Cylinder with an upper and lower opening, a flexible sealing cap, which the lower Cylinder opening surrounds and one ;! slidable in the cylinder arranged piston, characterized in that the piston (4) is a stable sealing Has shut-off, consisting of an upper (41) and a lower flat annular Disc with sealing collar and one in the center fixed and vertically extending pipe stump (42), in a hollow piston rod (3) is attached to this, which has a handle (2) at its upper end, and that the upper cylinder opening has a cover with at least two air outlets through which the piston rod (3) is centrally managed. 2. Pump according to claim 1, characterized in that that the piston rod (J) is welded to the pipe stub (42). y. Pump according to claim 1 or 2, characterized in that the flexible clearing button (5) has several inner clearing edges (501, 502, 503) in the edge area of the bottom. 4. Pump according to claim 1, 2 or 3, characterized ge indicates that all parts are made of plastic. 030049/00 * 2 " ² " ORIGINAL INSPECTED 5. Pump according to claim 4-, characterized in that all l'eilc nus Pv'C-Kunst st off exist. 030049/0042