EP3957221A1 - Device for dispensing a flowable material - Google Patents

Abstract

A device (100) for dispensing a flowable conveyed material, in particular a liquid, preferably a dispenser for dispensing a disinfectant, comprises a pump unit (6, 7) for pumping the flowable conveyed material, the pump unit (6, 7) having a pump inlet (8) for sucking in the free-flowing material to be conveyed and a pump outlet (10) for ejecting the free-flowing material to be conveyed. The device (100) further comprises a discharge opening (19) for discharging the free-flowing conveyed material, with the pump outlet (10) being in fluid-conducting connection (11) with the discharge opening (19), with the pump outlet (10) and the discharge opening (19 ) a first check valve (18) is arranged branching off at the fluid-conducting connection (11) in such a way that the flowable conveyed material can be diverted from the fluid-conducting connection (11) via the first check valve (18) when a limit pressure is exceeded. The first non-return valve (18) opens directly into an outlet which is arranged spatially separate from the pump inlet (8), so that if the limit pressure is exceeded, the free-flowing conveyed material emerging from the outlet can be disposed of.

Description

technical field

The invention relates to a device for dispensing a free-flowing material to be conveyed, in particular a liquid, preferably a dispenser for dispensing a disinfectant, comprising a pump unit for pumping the free-flowing material to be conveyed, the pump unit having a pump inlet for sucking in the free-flowing material to be conveyed and a pump outlet for ejecting the free-flowing material to be conveyed comprises, wherein the device further comprises a discharge opening for discharging the flowable conveyed material, wherein the pump outlet is in fluid-conducting connection with the discharge opening and wherein a first check valve is arranged branching off at the fluid-conducting connection between the pump outlet and the discharge opening in such a way that the flowable conveyed material exceeding a limit pressure can be derived via the first check valve from the fluid-conducting connection.

State of the art

Dispensers or dosing dispensers are used in many areas today. Dispensers are known as manually operable devices for dispensing a free-flowing material to be conveyed in the form of disinfectant dispensers, soap dispensers, as dosing devices for food, chemicals, etc.

the DE 20 2020 002 169 U1 (Büchel ) describes a dispenser for disinfectants. The dispensing device comprises a storage container for a conveyed item, at least one delivery opening and a pump, which is designed to convey or meter the conveyed item from the storage container to the delivery opening.

The pump is designed as a foot pump. The pump has a pressure port and a suction port and a pump chamber. The suction port of the pump is fluidly connected via a first fluid line to an interior of the reservoir in such a way that the fluid line dips into the conveyed material. The pressure port of the pump is fluidly connected to a T-piece via a second fluid line. The T-piece is fluidly connected via a third fluid line to the interior of the reservoir in such a way that conveyed material can flow back into the reservoir via this third fluid line. A first check valve is arranged in the third fluid line in such a way that it allows the conveyed material to flow in the direction of the reservoir and blocks it in the direction of the T-piece. The T-piece is fluidly connected to an adjustable throttle valve via a fourth fluid line. The actuating device for the pump is designed as an inclined platform in the foot part, which is rigidly connected to the housing. This has an opening through which an actuating part of the pump, for example a rubber bellows, which can be pushed in with the foot of a user, reaches through. Alternatively, the actuation device for the pump is designed to be movable, for example as a pedal, which presses on the actuation part of the pump.

This known device for dispensing a free-flowing material to be conveyed has the disadvantage that it has a complex structure and is therefore expensive to manufacture.

Presentation of the invention

The object of the invention is to create a device for dispensing a free-flowing material to be conveyed, which belongs to the technical field mentioned at the beginning and which is particularly hygienic and robust with a cost-effective construction.

The solution to the problem is defined by the features of claim 1. According to the invention, the first non-return valve opens directly into an outlet which is spatially separated from the pump inlet in such a way that if the limit pressure is exceeded, the free-flowing conveyed material emerging from the outlet can be disposed of. The check valve can be connected via a T-piece of the fluid-conducting connection, for example.

A known problem with dispensers, in particular dispensers which include a pump, is that when the dispensing opening is closed and the pump unit is actuated at the same time, pressure can build up, which can damage the pump unit.

In use, the user actuates the pump unit, whereupon the material to be conveyed is usually discharged through the discharge opening. In the event that no product is dispensed, the user usually assumes that the container is empty or has recently been replaced so that the lines are not yet filled with the product. Therefore, he will typically operate the pump unit several times before releasing it, assuming the reservoir is empty or the device is defective. However, when the pump unit is actuated, the clogging can lead to the pump unit being damaged.

It is known to provide a bypass line in such devices, which guides the conveyed material back into the conveyed material container via a non-return valve. However, this design poses the problem that the conveyed material that has already been removed from the conveyed material container can be contaminated by the device, which means that returning it to the conveyed material container is hygienically questionable. The fact that the outlet is now arranged spatially separately from the pump inlet prevents the conveyed material that leaves the conveyed material container from being able to get back into the conveyed material container. A particularly hygienic operation of the device is thus achieved, since a storage container and its contents cannot be contaminated by conveyed goods that have already been obtained.

The outlet particularly preferably opens directly into the open air. On the one hand, you can see immediately that the device is not working properly. In such a situation, it may be that the discharge opening or the fluid-conducting connection after the check valve is blocked.

Depending on the use, especially when used as a disinfectant dispenser, it does not matter whether a portion of the disinfectant gets out into the open, since this typically evaporates relatively quickly due to the alcohol content.

In variants, the outlet can also open into a disposal container or a collecting tray (see below) or the like.

The fluid-conducting connection is preferably designed as a simple fluid line, that is to say the fluid-conducting connection exclusively comprises a fluid line, in particular a rigid or flexible pipeline. A particularly simple and cost-effective construction of the device is thus achieved. The fluid line can include branches, in particular the check valve mentioned above—however, this is not formed within the fluid-conducting connection, but rather as a branch from the fluid-conducting connection.

Preferably, the spout includes a second non-return valve. This prevents the fluid-conducting connection from being able to drain. In variants, the second check valve can be dispensed with.

The first check valve preferably has a passage pressure of between 0.25 and 0.6 bar, particularly preferably between 0.35 and 0.45 bar. In variants, the passage pressure can also be higher than 0.6 bar or lower than 0.25 bar.

The second check valve preferably has a passage pressure of between 0.05 and 0.3 bar, particularly preferably between 0.1 and 0.2 bar. In variants, the passage pressure can also be higher than 0.3 bar or lower than 0.05 bar. It is clear to the person skilled in the art that when a second check valve is used in the spout, this must have a lower passage pressure than the first check valve. A difference between the passage pressure of the first check valve and the second check valve is preferably between 0.1 and 0.3 bar, particularly preferably between 0.15 and 0.25 bar. In variants, the difference between the passage pressure of the two check valves can also be less than 0.1 bar or greater than 0.3 bar.

The pump unit is preferably designed in such a way that the stroke of the pump corresponds exactly to the intended dispensing volume of conveyed material, for example disinfectant. In this way, especially compared to known devices, throttle valves or the like in the fluid-conducting connection can be dispensed with in turn, a simple structure is achieved, which has a positive effect on the manufacturing costs.

The flowable material to be conveyed preferably comprises a liquid or pasty disinfectant. However, such devices can also be operated with other free-flowing material to be conveyed, in particular with liquid soap, creams, lotions, but also with foodstuffs or chemicals. The device according to the invention is to be preferred in particular in applications in which great importance is attached to hygiene and the cleanliness of the free-flowing conveyed material.

The selection of the limit pressure depends on the type of pump and can be easily determined by a person skilled in the art. The setting of a corresponding non-return valve, which strikes at the limit pressure, is also routine work for the person skilled in the art.

The first non-return valve is preferably arranged in the area of the dispensing opening. Typically, lines of such devices for dispensing free-flowing material to be conveyed, in particular disinfectants, clog in the area of the dispensing opening, for example by an object being stuffed into the dispensing opening or the like (pranks by children, etc.). The arrangement of the non-return valve in the area of the discharge opening ensures that the conveyed material can reach a drip tray, for example, via the same route as the conveyed material exiting via the discharge opening. A particularly simple construction of the device is thus achieved. For this purpose, the fluid-conducting connection can be guided in a tube, for example, with the non-return valve being arranged in the tube in such a way that the conveyed material runs inside the tube when exiting the non-return valve, but outside the fluid-conducting connection in the direction of a drip tray, for example. The arrangement of the non-return valve inside the tube prevents it from being able to be closed by a user.

In variants, the check valve can also be arranged elsewhere in the fluid-conducting connection. In particular, the check valve can also be arranged in the area of the pump outlet.

Preferably, the device comprises a connection, preferably precisely one connection, for a particularly exchangeable container (conveyed goods container) containing the free-flowing conveyed goods, which is connected to the pump inlet in a fluid-conducting manner. Due to the fact that no bypass is provided which connects the check valve to the container, the device manages with exactly one connection for the container. A particularly cost-effective construction of the device is thus achieved.

In variants, one connection can be dispensed with. In this case, the pump unit can be permanently connected directly to the container without a connection. The container can thus be designed together with the pump unit as a refill unit or as a disposable unit.

Furthermore, more than one connection can also be provided for a container, with which, for example, several containers can also be connected.

A container for the device is preferably designed to be fireproof and particularly preferably consists of metal or is encapsulated. This ensures particularly reliable operation of the device, particularly when used as a disinfectant dispenser. In variants, the container can also be made of plastic or other materials. The pump is preferably designed as a diaphragm pump, comprising a spring-elastic cap communicating with a pump chamber, in particular a rubber cap, which is designed in such a way that when the rubber cap is actuated against a spring force, the conveyed material is ejected from the pump chamber via the pump outlet and when it is relieved the rubber cap relaxes due to the spring force in such a way that the conveyed material is conveyed via the pump inlet into the pump chamber.

An interior of the rubber cap preferably forms the pump chamber.

Alternatively, an actuating element of a pump unit can be activated by means of the rubber cap.

The membrane pump can thus in particular according to the principle of a primer pump (manually operable petrol pump) or a manual windshield washer pump from the be trained in the automotive sector. This means that an existing product can be used, which is manufactured in large numbers and is therefore particularly cost-effective.

In variants, the pump can be designed as a flow pump, centrifugal pump, displacement pump, in particular as a bellows pump, gear pump, piston pump or hose pump. Other variants are known to those skilled in the art.

The pump unit is preferably designed as a hand-operated and/or foot-operated pump unit. This creates a device in which the energy required to convey the material to be conveyed is provided by the user through muscle power. In variants, the pump unit can also be designed as an electrical or other pump unit.

The device is particularly preferably configured so that it can be actuated by foot, since this means that the device does not have to be touched with the hands. This prevents contamination of the hands. This is particularly relevant in connection with the risk of infection from viruses, bacteria, etc.

The rubber cap can preferably be actuated via a two-sided lever, the lever having a lever pivot axis, the lever being designed as a foot pedal on a first lever side and for actuating the rubber cap on a second lever side opposite the first. With the lever, a ratio between the stroke for actuating the pump unit and the pedal stroke can be optimized in an ergonomic manner. Furthermore, stops on the lever can be used to prevent the pump unit from being damaged by excessive pressure.

In variants, the lever can also be designed on one side. Furthermore, the lever can also be dispensed with. In this case, for example, the pump unit can be actuated directly with the foot, in particular, for example, by foot actuation of the rubber cap.

Preferably, the lever or the two-sided lever further comprises a spring element, for example a spiral spring or the like, with which the lever after Pressing the rubber cap can be returned to a starting position. This prevents the foot pedal or the lever from having to be returned to the starting position through the rubber cap, which means that the service life of the rubber cap can be significantly increased. In variants, the spring element can also be dispensed with.

Preferably, the two-sided lever also includes an adjustable stop, with which a pump stroke can be adjusted, the adjustable stop including in particular a horizontally displaceable stop element which is arranged to be horizontally displaceable via an adjusting screw, preferably under the first lever side. For this purpose, the stop element can be guided, for example, on a rail, in a U-profile or the like. The output quantity of the free-flowing material to be conveyed can thus be adjusted in a particularly simple manner. For example, the dosing quantity can be adjusted accordingly in the device if the conveyed goods change, e.g. from a very low-viscosity to a higher-viscosity disinfectant.

In variants, the stop element can also be dispensed with. Furthermore, the pump unit can also be arranged to be displaceable in such a way that a pump stroke can be set. Further modifications are known to those skilled in the art.

The device preferably comprises an actuating pin for actuating the rubber cap, it being possible for the actuating pin to be moved in the direction of the rubber cap by means of the second lever side in order to actuate the rubber cap.

In variants, the rubber cap can also be actuated directly with the lever, in particular the first lever side or the second lever side.

Preferably, the actuating pin includes a bulge proximally in order to actuate the rubber cap gently, the bulge in particular having a diameter which is between 60% and 100%, preferably between 70% and 90%, particularly preferably between 75% and 85% of a diameter of the rubber cap is.

A large number of experiments and long-term tests have shown that the rubber cap can be operated particularly gently. With this, in particular achieved that the rubber cap includes relatively large bending radii, so that the material of the rubber cap experiences relatively little material fatigue. A particularly robust design of the device is thus achieved.

In variants, the curvature can also be dispensed with. Instead, for example, the rubber cap can be made more solid.

The curvature of the curved actuating pin is particularly preferably provided by a commercially available cap screw, in particular, for example, an M8 cap nut. In this way, the device can be built more cost-effectively. In variants, the curvature can also be achieved in other ways; many variants are known to those skilled in the art.

The device preferably comprises a housing, with the first side of the lever protruding at least partially from the housing, so that the foot pedal is accessible through an angle of at least 180°. The housing particularly preferably comprises a cylindrical stand with a vertical longitudinal axis when in use, from which the foot pedal projects radially. A particularly good accessibility of the foot pedal is achieved in this way. The user can thus access the foot pedal from a radius or sector of a circle with an inner angle of more than 180° - even if not with the same foot, depending on the position. This creates a particularly user-friendly device for dispensing a free-flowing material to be conveyed.

It is clear to the person skilled in the art that another triggering mechanism for activating the pump unit can also be provided in the same way, in particular a sensor, a rubber cap as described above, etc. The angle can also be less than 180°.

Preferably, the device comprises a collecting basin, which is arranged vertically below the discharge opening in order to be able to collect conveyed material emerging from the dispensing opening, the collecting basin being accessible in particular at an angle of at least 180°, preferably at least 270°, particularly preferably at least 320° .

The device particularly preferably comprises a base, in particular a prismatic base, with the collecting basin or the drip tray being arranged on top of the base. The fluid-conducting connection preferably comprises a tube which, starting from the base, is guided in an arc over the collecting basin. This results in particularly optimal accessibility, which is only limited by the tube. The tube itself can be designed as the fluid-conducting connection. Alternatively, a line can be arranged inside the tube, which forms the fluid-conducting connection.

In variants, the dispensing opening can also be arranged on a vertical rear wall or in a half-open box, so that accessibility is restricted. This can be advantageous in order to protect the environment from the escaping conveyed material.

The collecting basin is, in particular in the case of a dispenser for disinfectants, preferably detachably fastened to the base by means of a manually operable mechanism, in particular a locking bolt or the like. The collecting basin can be designed as a drainless bowl, particularly if the dispenser is intended for dispensing disinfectant. This allows the collection basin to be emptied and/or cleaned from time to time. In variants, the collection basin can also be permanently connected to the base. The catch basin can also include a drain, with which the free-flowing conveyed material can be collected, for example, in a disposal container.

The base preferably comprises a base plate for resting on the floor, with the base plate comprising at least one roller in an edge region, which contacts the floor when the device is tilted when it is in use, so that the device can be transported by means of the roller.

In variants, the base plate or the rollers can also be omitted. The rollers can also be arranged in the edge area of the base.

When the device is in use, the rollers are preferably lifted off the ground or at least relieved of the load in such a way that at least 90% of the device's own weight taken up by the bottom plate. This creates a particularly simple transport device with an optimal and stable stand at the same time.

In variants, the device can also rest on the rollers when in use. In the present case, the term “rollers” includes all types of construction that are suitable for transporting an object by rolling. The rollers may include wheels, a roller, etc., for example. However, the device preferably comprises two wheels which are arranged coaxially and are spaced apart from one another. Particularly preferably, the wheels are at a distance from one another which is in the area of an overall width of the base, in particular greater than the overall width of the base. This ensures that the device is particularly stable against lateral tilting during transport. In variants, the distance can also be smaller than an overall width of the stand.

The roller or the two wheels are preferably arranged in such a way that at a tilt angle between 5° and 30°, preferably between 10° and 20°, a center of gravity of the device lies vertically over a roller axis or wheel axis. This achieves the lowest possible load at a transport tilting angle, with the transport tilting angle preferably being between 2° and 10° greater than the tilting angle at which the center of gravity of the device lies vertically above the roller axis or wheel axis. In variants, the tilting angle at which the center of gravity lies vertically above a roller axle or wheel axle can also be less than 5° or greater than 30°.

Preferably, the tube in which the fluid-conducting connection is located and designed in such a way that the tube can be used as a handle to tilt the device onto the rollers and then to transport the device, i.e. by means of the rollers procedure. In variants, the tube can also be arranged differently.

The tube and the rollers are preferably arranged on the same side of the device, in particular on a side opposite the foot pedal. On the one hand, the rollers do not bother the user, ie the base plate has no protruding parts in the area of the foot pedal, so that a risk of stumbling can be avoided. Go on with it the device can be tilted backwards by gripping the pipe over the rollers and then moved by pulling or pushing.

Further advantageous embodiments and combinations of features of the invention result from the following detailed description and the entirety of the patent claims.

Brief description of the drawings

Fig. 1

eine schematische Schnittdarstellung entlang einer vertikalen Ebene durch einen Dispenser bei nicht betätigtem Fusspedal; und

Fig. 2

eine Darstellung gemäss Figur 1 bei betätigtem Fusspedal.

Grundsätzlich sind in den Figuren gleiche Teile mit gleichen Bezugszeichen versehen.The drawings used to explain the embodiment show:

1

a schematic sectional view along a vertical plane through a dispenser when the foot pedal is not actuated; and

2

a representation according to figure 1 when the foot pedal is pressed.

In principle, the same parts are provided with the same reference symbols in the figures.

Ways to carry out the invention

the figure 1 shows a device designed as a dispenser 100 for dispensing a free-flowing material to be conveyed, the material being conveyed being present, for example, as a disinfectant. The dispenser 100 is in the state before use.

The dispenser 100 comprises a base plate 3 on which a housing 14 is mounted. In the bottom area of the housing 14, a metal tube 17 is fastened, which leads outside the housing 14 upwards over a drip tray 15 arranged on the housing. The metal tube 17 has an opening in the end area, which serves as a dispensing opening 19 . The drip tray 15 is equipped with a snap mechanism, comprising a locking bolt 16 for the detachable attachment of the drip tray.

The base plate comprises two rollers 20 which are rotatably mounted about coaxial shafts arranged parallel to the base plate. The dispenser 100 can now simply be taken on the metal tube 17 and tilted over the rollers 20 so that the dispenser 100 is now open the rollers 20 rests. The dispenser 100 can be moved in this way. In the state of use, the rollers 20 in the present case just barely touch the ground, so that the dispenser 100 has a stable stand.

On the base plate 3, opposite the rollers 20 or the metal tube 17, is a bearing block 2 with a horizontal (i.e. parallel to the base plate 3) shaft in the edge area of the housing 14, on which a double lever 1 is pivotably arranged. A first lever of the double lever 1 protrudes from the housing 14 and is designed as a foot pedal. A second lever of the double lever 1 protrudes into the housing 14 and serves to actuate the pump unit as follows. At the end of the second lever, a pin 3 is articulated about a horizontal axis parallel to the shaft. The pin 3 is essentially perpendicular to the base plate 3 and is guided in a guide 4 . The distal end of the pin 3 is provided with an M8 cap nut 5 in the present case. In this case, the curvature has a diameter of 13 mm and a height of 15 mm. In the present case, the diameter of the rubber cap (6) is 15.5 mm, so that the diameter of the bulge is approximately 84% of the diameter of the rubber cap (6). This measure massively increases the service life of the rubber cap (6) and thus of the pump unit. The cap nut serves as an actuating head for the pump unit. The M8 cap nut 5 is in direct contact with a rubber cap 6 of the pump unit. The present pump unit is designed identically to a primer pump, which was formerly known from the automotive industry as a hand-operated petrol pump or also as a hand-operated windshield washer pump. The rubber cap 6 forms the pump chamber. The pump inlet 8 and the pump outlet 10 are arranged in the block 7 - these are each equipped with a correspondingly aligned check valve (not shown).

On the base plate 3, below the first lever of the double lever 1, a stop element 22 is arranged, which can be moved towards the bearing block 2 or away from the bearing block 2 via an adjusting screw 23. For this purpose, the adjusting screw 23 is accommodated in an internal thread of the bearing block 2 . By screwing in the adjusting screw 23, the stop element 22 moves in the direction of the bearing block 2, whereby a movement path of the double lever 1 is increased. This in turn becomes the Pump stroke increased. Conversely, the stop element 22 is moved away from the bearing block 2 by unscrewing the adjusting screw 23, whereby a movement path of the double lever 1 is reduced and thus the pump stroke is also reduced.

The pump inlet 8 is connected via a fluid line 12 to a container 13 which contains the disinfectant. The pump outlet 10 is connected via a further fluid line 11 which leads through the metal tube 17 to the discharge opening 19 . The fluid line 11 includes a branching non-return valve 18, in the end region near the dispensing opening 19. This serves to secure the pump so that the pump unit cannot be damaged if the dispensing opening 19 is blocked and the foot pedal is actuated at the same time. Instead, in this case, the disinfectant is drained via the non-return valve 18 . The metal tube 17 and the arrangement of the non-return valve 18 are designed and arranged in such a way that when disinfectant escapes from the non-return valve 18, the disinfectant also reaches the drip tray 15--this is not absolutely necessary, however. Between the check valve 18 and the dispensing opening 19, the fluid line 11 additionally includes a check valve 21, which can be used to prevent the fluid line 11 from being emptied.

When using the dispenser, the first lever of the double lever 1 is pressed down by pressing the foot pedal, while the second lever moves the pin 3 through the guide 4 up. This state is in the figure 2 apparent. The rubber cap 6 is pressed in with the M8 cap nut 5, which reduces the pump chamber. The disinfectant in the pump chamber is thus expelled through the pump outlet 10 by pressing the non-return valve in the pump outlet 10 . The disinfectant is thus conveyed through the fluid line 11 to the dispensing opening 19 .

If the foot pedal is relieved, the M8 cap nut 5 is returned by the relaxation of the rubber cap 6, whereby the bolt 3 moves in the direction of the base plate 3 and the foot pedal is thus transferred back to the original position by the spring force of the rubber cap 6, in which the foot pedal lifted from the bottom plate. At the same time, by relieving the rubber cap 6 on the Fluid line 12 conveys a new portion of disinfectant from the container 13 via the pump inlet 8, again by pressing the corresponding check valve in the pump inlet 8, into the pump chamber, that is, into the rubber cap. The Dispenser 100 is then ready for a further purchase of the disinfectant.

The metal tube 17 can also lie within the housing 14 or only lead from the upper end of the housing 14 over the drip tray 15 . It is clear to the person skilled in the art that the check valve 18 can also be positioned elsewhere, in particular, for example, also in the vicinity of the pump outlet 10.

In summary, it can be stated that, according to the invention, a dispenser for disinfectants is created which is constructed particularly cost-effectively but is nevertheless extremely robust.

Claims (14)

Device (100) for dispensing a free-flowing material to be conveyed, in particular a liquid, preferably a dispenser for dispensing a disinfectant, comprising a pump unit (6, 7) for pumping the free-flowing material to be conveyed, wherein a) the pump unit (6, 7) comprises a pump inlet (8) for sucking in the free-flowing conveyed material and a pump outlet (10) for ejecting the free-flowing conveyed material, wherein b) the device (100) further comprises a discharge opening (19) for discharging the free-flowing conveyed material, wherein the pump outlet (10) is in fluid-conducting connection (11) with the discharge opening (19), wherein c) between the pump outlet (10) and the discharge opening (19), a first check valve (18) is arranged branching off at the fluid-conducting connection (11) in such a way that the free-flowing conveyed material is discharged via the first check valve (18) from the fluid-conducting connection (11) can be derived,
characterized in that d) the first non-return valve (18) opens directly into an outlet which is spatially separated from the pump inlet (8), so that if the limit pressure is exceeded, the free-flowing conveyed material emerging from the outlet can be disposed of. Device (100) according to Claim 1, characterized in that the first non-return valve (18) is arranged in the region of the dispensing opening (19). Device (100) according to Claim 1 or 2, characterized in that the device (100) has a connection, preferably exactly one connection, for a in particular a replaceable container (13) containing the free-flowing material to be conveyed, which is connected to the pump inlet (8) in a fluid-conducting manner. Device (100) according to one of Claims 1 to 3, characterized in that the pump unit (6, 7) is designed as a diaphragm pump, comprising a spring-elastic cap communicating with a pump chamber, in particular a rubber cap (6), which is designed in such a way that when the rubber cap (6) is actuated against the spring force, the material to be conveyed is ejected from the pump chamber via the pump outlet (10) and when it is relieved, the rubber cap (6) is relaxed by the spring force in such a way that the material to be conveyed via the pump inlet (8) pumped into the pump room. Device (100) according to Claim 4, characterized in that an interior space of the rubber cap (6) forms the pump space. Device (100) according to Claim 4 or 5, characterized in that the rubber cap (6) can be actuated via a lever, in particular a two-sided lever (1), the two-sided lever (1) having a lever pivot axis, the two-sided lever (1 ) is designed as a foot pedal on a first side of the lever and on a second side of the lever opposite the first side for actuating the rubber cap (6). Device (100) according to Claim 6, characterized in that the two-sided lever (1) further comprises a spring element, with which the lever can be returned to an initial position after the rubber cap (6) has been actuated. Device (100) according to Claim 6 or 7, characterized in that the two-sided lever (1) further comprises an adjustable stop, with which a pump stroke can be adjusted, the adjustable stop in particular comprising a horizontally displaceable stop element which can be adjusted via an adjusting screw, preferably under the first lever side is arranged to be horizontally displaceable. Device (100) according to claim 6, characterized in that the device (100) comprises an actuating pin (3) for actuating the rubber cap (6), wherein the actuating pin (3) can be moved in the direction of the rubber cap (6) by means of the second lever side in order to actuate the rubber cap (6). Device (100) according to Claim 7, characterized in that the actuating pin (3) comprises a bulge proximally in order to actuate the rubber cap (6) gently, the bulge in particular having a diameter which is between 60% and 100%, preferably between 70% and 90%, particularly preferably between 75% and 85% of a diameter of the rubber cap (6). Device (100) according to one of Claims 6 to 8, characterized in that the device (100) comprises a housing (14), the first lever side at least partially protruding from the housing so that the foot pedal can be rotated through an angle of at least 180° is accessible. Device (100) according to one of Claims 1 to 9, characterized in that the device (100) comprises a collecting basin (15) which is arranged vertically under the discharge opening (19) in order to collect conveyed material emerging from the discharge opening (19). can, the collecting basin (15) being accessible in particular at an angle of at least 180°, preferably at least 270°, particularly preferably at least 320°. Device (100) according to one of Claims 1 to 9, characterized in that the device (100) comprises a stand for setting up on the floor. Device (100) according to Claim 11, characterized in that the base comprises a base plate (3) for resting on the floor, the base plate (3) comprising at least one roller (20), preferably two coaxial wheels spaced apart from one another, in an edge region , which in a state of use of the device (100) tilted, contacts the ground so that the device (100) can be transported by means of the roller (3), in particular at a tilting angle between 5° and 30°, preferably between 10 ° and 20 ° a center of gravity of the device is vertically above a wheel axle.

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