DE7501055U - Wash gel dosing pump - Google Patents

Description

Case 7/112
Dr Bu / hear

DR »KARL THOMAE GMBH, BIBERACH AN DER RISS

Washing gel - dosing pump

The innovation relates to a pump for the metered delivery of liquid or paste-like substances, in particular of washing : gel.

; Washing gel dispensers consisting of a pump are known I with upstream storage room for metered delivery of the filling ; good. Such a pump is too expensive to manufacture; dig; the dosing chamber takes up additional space.

Pumps are also known in which the metering space is included in the piston. These pumps have ball valves provided, which, however, especially in the case of higher viscose laundromat.,

■ like to glue ;; thereby the dosed delivery of washing liquid ! questioned.

According to the innovation, these disadvantages are eliminated by the fact that in ! a sealing piston of a pump firmly integrates a metering piston; e-I will fit; the metering piston is pressed against the inner piston wall,.; I.

sealed by means of a sleeve, the same applies to the: sealing piston. The combination sealing piston - dosing piston , can be moved into the pump cylinder by manually operating a lever; a spring force, for example by a

Spiral spring generated, pushes eng after manual operation ; Lever the pistons back to their original position.

7501055 23.10.75

It goes without saying that the sealing piston and Dosing piston can also be made from one piece of material. An intermediate piece called a valve seat with an inner bore inside the cylinder separates the metering piston; by a valve piston that slides in the cylinder ! is arranged and in turn by means of a cuff opposite < the cylinder wall is sealed. The valve piston will

pressed against the valve seat by a spring force. It is necessary that the spring force is greater, than that which has a restoring effect on the combination of metering plunger and sealing plunger. It is particularly suitable for this also a spiral spring that rests against the rear wall of the cylinder. What is important for this innovation the pistons are equipped with all-round, elastic sealing collars, which ensure that they function properly. : kidneys are crucial. The cuffs; are pressed tightly against the cylinder walls by pressure.

j The following is an example of an embodiment of the new

I eration described on the basis of a drawing. I The housing of the storage container is shown in the figure with (1)

specified. (2) is the bottle slicer with a hollow I. channel and an inlet (15). (3) is a spiral spring for moving the valve piston (4), which has valve piston (4) ! at (5) a double collar for sealing against the ■ cylinder inner wall and the valve seat (6); the valve seat (6) ! has an inner bore at (6a); (7) is the outlet hole for dispensing the washing gel; (8) means the compression spring for the Do-I piston (9), which in turn has a sleeve (10) for sealing ! tion owns. The dosing piston (10) is firmly seated in the sealing piston (11), the latter is through a further sleeve

(12) sealed against the inner wall of the cylinder. (13) \ a tightly fitting sealing plug (14) of the actuating lever,

(15) the inlet hole and (16) a stop for the lever

10/23/75

If the operating lever (14) is pulled forward, it is moved the dosing and sealing piston (9) and (11) against the valve seat (6). The product in the dosing chamber is pressed through the channel (6a) against the valve piston (4), which finally counteracts the pressure of the spring (3) in Direction of the plug (13) is pressed and thereby the Releases Auelaßbohrung (7). The washing gel compressed in this way escapes to the outside through this hole.

If the lever (I ¹ O) is released, the spring (8) pushes the dosing and locking piston with the actuating lever (It) up to a stop (16); this releases the inlet (15) Sealing piston (9) and (11) also the valve piston (4) is relieved and pressed again against the valve seat (6) by the spring (3), the outlet (7) is closed again; by the sealing effect of the sleeves (5), (10) and (12) type of piston, when the dosing piston (9) retracts, a vacuum is created; this vacuum causes washing gel from the storage vessel through the hole in the bottle slicer (2) to be released again via the inlet (15) released when the dosing piston slides back is sucked into the dosing chamber.

7501055 23.io.7S

Claims (3)

,. Metering pump for pumping liquid or pasty substances consisting of einsm metering piston (9) with sleeves (10) in a Veraohlußkolben (11) with cuffs (12), a valve seat (6) with compression spring (8) for the metering piston, a valve piston ⁽¹ O with cuffs (5), a compression spring (3) for the valve piston, a sealing plug (13), an outlet hole (7) on the side of the valve piston and an inlet hole (15) on the side of the metering piston, an actuating lever (14) with a stop (16). >. Device according to claim 1, characterized in that the Kanscuettes (5), (10) and (12) on the piston ends all around ; ind, lie tightly against the cylinder walls and are elastic. 3. Apparatus according to claim 1 and 2, characterized in that the sleeve (5) on the valve piston ( ¹ O is designed as a double sleeve and when pressed against the valve seat (6) also acts as a seal. M. Device according to claims 1 to 3, characterized by a bottle slicer (2) with an inner cavity in communication with the inlet bore (15). 7501055 23.10.75 I.