Dry toilet

Abstract

A first aspect of the invention relates to a dry toilet (10) comprising a body with an opening for the introduction of a user's excrement, a reservoir (30) for a collection medium, a collection area (18) below the body opening for collecting the excrement, and a conveying device (16; 34; 36; 46; 50) for transporting the collection medium from the reservoir to the collection area and the collection medium together with the collected excrement from the collection area to an outlet (22). The toilet further comprises an operating device (24) which is effectively connected to the conveying device in order to trigger, for example when actuated by the user, the transport process of the collection medium located in the collection area together with the collected excrement to the outlet and the provision of a new dose of the collection medium in the collection area.

Description

Field of invention

[0001] The invention relates to a toilet without a water flush (dry toilet). In a further aspect, the invention relates to a mobile toilet device (e.g., a mobile toilet cabin or a mobile toilet container) with one or more dry toilets. Background of the invention

[0002] Conventional toilets are usually equipped with a water flush that, when activated, flushes wastewater, along with excrement and, if present, toilet paper, into a drainpipe. However, a water flush system is not always a suitable technical solution, for example, in areas with water scarcity or where connecting the toilet to a sewage system is difficult. Water flush systems are also unsuitable for portable toilets.

[0003] Of course, conventional toilets also have general problems, such as splashing of the wastewater mixture, soiling of the toilet bowl, especially above the waterline, and the formation of aerosols during flushing. Due to restrictions on the use of chemical toilets and for environmental reasons, they are not always a suitable replacement for conventional toilets.

[0004] Various alternatives to flush toilets have been proposed in the prior art. For example, document WO 2011 / 144950 A1 describes a toilet in which a collection tube is arranged below the seat to collect excrement. After each bowel movement, the tube is compressed above the excrement. With this solution, a new tube must be inserted regularly.

[0005] Patent application US 2015 / 067956 A1 discloses a composting toilet. This toilet includes a separating device housed in a toilet seat with a base. Liquid and solid waste entering the toilet are separated by the separating device, which comprises an inclined conveyor belt that transports the solid waste upwards, while the liquid waste is directed to the lower end of the inclined conveyor belt by gravity. The solid waste can be disposed of in a composting chamber adjacent to and / or below the toilet. However, a disadvantage of this solution is that the belt becomes dirty and can be damaged or worn down by a scraper. This, in turn, can lead to a worsening of the soiling.

[0006] A dry toilet with a trapdoor mechanism has been proposed in publication CA 3010958 A1.

[0007] Another alternative is a composting toilet using sawdust. However, several disadvantages must be considered: the visibility of previous users' waste, the possibility of the user adding too much sawdust, and the user's direct access to the sawdust reservoir, which can lead to a fire hazard.

[0008] German patent application DE 3237866 discloses a dry toilet which has a storage container for additives (such as peat or wheat chaff) and a metering device for the controlled addition of these additives. When the dry toilet is used, the excrement enters the space between the toothed discs of two plastic rollers. The user then turns a handwheel, which causes a portion of additive to be sprinkled onto the excrement. A counter-rotating movement of the two rollers mixes the excrement with the additives and the toilet paper. The resulting mixture then falls into a container below.

[0009] German patent application DE 426843 describes a litter toilet comprising shredding rollers that are sprinkled with peat moss and collect the waste falling downwards. After use, a shredding process is triggered during which litter is continuously sprinkled onto the waste material and thoroughly mixed with it. General description of the invention

[0010] A first aspect of the invention relates to a dry toilet comprising a body with an opening for the introduction of a user's excrement (feces), a reservoir for a collection medium (preferably absorbent material such as sawdust, paper scraps, plant fibers, or the like), a collection area below the body opening for collecting the excrement, and a conveying device for transporting the collection medium from the reservoir to the collection area and the collection medium together with the collected excrement from the collection area to an outlet. The toilet further comprises an operating device that is effectively connected to the conveying device in order to trigger, for example, when activated by the user, the transport process of the collection medium located in the collection area together with the collected excrement to the outlet and the provision of a new dose of the collection medium in the collection area.

[0011] According to the invention, the user's excrement does not fall directly onto the conveying device, but rather onto a bed of collecting medium, which is conveyed to the outlet along with the excrement. The collecting medium not only reduces or prevents contamination of the conveying device, but also binds liquid components, reduces odor formation, and serves to cover any soiling of the conveying device caused by previous users. With proper use, each user finds the toilet loaded with clean collecting medium.

[0012] Preferably, the conveying device comprises a conveyor belt which is moved by a predefined feed length by the operating device for each operating operation. The predefined feed length can preferably be selected such that it corresponds at least to the extent of the collection area in the belt direction.

[0013] The conveyor belt can have a deflection station (e.g., a deflection roller) on the outlet side of the collection area, where the collection medium, along with any collected excrement, can be tipped into the outlet. A scraper can be installed in the outlet area to remove any remaining material from the conveyor belt as it passes by. However, the scraper is not strictly necessary if the deflection station is designed appropriately.

[0014] According to a preferred embodiment, the conveying device can have a slidably mounted carrier carriage, wherein the carriage has a first and a second gripping jaw to clamp the conveyor belt between them. The carriage preferably includes a lever device rotatably mounted on the carrier carriage, which, when actuated in one direction of movement of the carrier carriage, presses the first gripping jaw against the second gripping jaw, clamping the conveyor belt, and, when actuated in the opposite direction of movement of the carrier carriage, causes the first gripping jaw to release the conveyor belt. The conveying device with the slidably mounted carrier carriage can also be used independently of a dry toilet. Independent aspects of the invention therefore relate to such a conveying device, or such a drive device for a conveyor belt.These aspects can be the subject of independent patent claims. The dry toilet can be considered an example of a possible application of these independent aspects of the invention.

[0015] Alternatively, the conveying device can comprise a drum which is moved by a predefined angle of rotation by the operating device for each operating operation. The drum is preferably arranged so that its axis of rotation runs below the seat. In this case, the collection area corresponds approximately to the apex of the drum shell. The circumference of the drum must be selected so that the collection medium can be applied to the drum shell just before the collection area without slipping off.

[0016] Alternatively, the conveying device can include a paddle wheel, which is moved by one paddle wheel increment per operating operation. The paddle wheel can be positioned so that its axis of rotation runs approximately midway between the seat and the outlet of the storage hopper.

[0017] According to a further embodiment of the invention, the conveying device comprises a slide rotatably mounted on a base plate, the slide having one or more eccentric openings arranged at equal angular intervals for carrying a single dose of the receiving medium. The base plate arranged below the slide has an opening which forms the outlet or leads into it. (Angular interval here refers to the distance between the centers of adjacent openings, which is 360° / N, where N denotes the number of eccentric openings of the slide, each designed to carry a single dose of the receiving medium.) The operating device rotates the slide by the angular interval for each operating operation, rotating the opening of the slide located in the receiving area beyond or over the opening in the base plate.The collecting medium, along with the collected excretions, is carried along by the slide gate and pushed into the outlet. The slide gate can be a perforated plate. The operating device and the conveying device are preferably designed such that at the beginning and end of each operating process, an opening in the slide gate is located within the collection area.

[0018] According to a further embodiment, the conveying device comprises a drawer that moves back and forth between the collection area and the outlet of the storage container, and a scraper against which the top of the drawer passes during movement. In this case, the conveying device is designed such that, as the drawer extends towards the collection area, the top of the drawer is exposed to the collection medium, and that, during the drawer's return movement, the scraper wipes the collection medium, along with the collected excretions, over the front edge of the drawer and into the outlet opened by the drawer during its return movement. In the extended position, the drawer can close the outlet.The movement of the drawer can be coupled to the movement of a metering gate, which is preferably arranged at the outlet of the storage tank: during the backward movement of the drawer, fresh collection medium is loaded into the gate area; during the extension of the drawer, the collection medium located in the gate area is pushed onto the drawer.

[0019] The operating device can include a lever, for example a pedal (foot lever), which is mechanically connected to the conveying device to drive it, for example via a linkage and / or a gearbox. The conveying device can be driven purely mechanically by the operating device. Alternatively, however, it is also possible that the conveying device has an electric motor and the operating device has a motor controller for the electric motor with a corresponding user interface. The user interface can be a simple button or lever, the actuation of which initiates an operating process by the motor controller. According to another embodiment, the user interface can include one or more sensors (e.g., a distance sensor, a pressure sensor, a motion sensor, etc.) that trigger the operating process. The operating device, or...The user interface can be designed so that conscious action by the user is necessary to initiate an operating process, for example, pressing a pedal, pulling a chain, pressing a button, flipping a lever, or similar. Alternatively, the operating device or user interface can be designed so that no conscious action by the user is necessary. In this case, the operating device or user interface preferably has sensors whose measurements are then used to determine whether an operating process needs to be initiated. For example, one or more sensors can be provided that automatically detect when excrement is present in the collection area.

[0020] The advantage of a purely mechanical operating and conveying device is that no electrical or electronic components are required. Furthermore, no power connection is necessary. Of course, it is also possible to equip the dry toilet with a battery storage system and / or a photovoltaic system to power an electrically operated operating and conveying device and ensure a certain degree of autonomy or self-sufficiency.

[0021] The collecting medium may, preferably, comprise absorbent material, for example sawdust, wood shavings, cereal chaff, paper scraps, plant fiber material, zeolite, diatomite, sepiolite, or bentonite.

[0022] The collection medium can be in bulk form. Accordingly, the storage tank can also be a bulk material storage system. In this case, the dry toilet can have a metering device, such as an impeller, a screw conveyor, a metering gate, and / or a passage for the collection medium arranged on the conveying device, the cross-sectional area of ​​which determines the flow rate per conveying distance.

[0023] As an alternative to bulk material, the collection medium could also be in solid form, for example as molded or pressed pellets. In this case, the storage unit is preferably designed as a magazine.

[0024] The dry toilet may have a separating device for the separate removal of urine. This separating device may be integrated into the conveying system and may, for example, have a liquid-permeable layer and / or openings (such as slots, pores, etc.) through which liquid can drain away while solid components are retained.

[0025] The dry toilet may have a compaction device arranged on the conveying system in such a way that the collection medium is compacted on its way from the storage tank to the collection area. Such a compaction device could have one or more rollers or pressure plates that exert pressure on the collection medium. Embossing rollers or plates can also be used as compaction devices.

[0026] The dry toilet may have a splash guard below the seat. The toilet may also have side walls below the seat, for example, in the form of a downward-widening funnel. A downward-widening funnel shape is preferred because it is less prone to soiling and also less visible from the user's perspective.

[0027] The conveying device and the operating device are preferably integrated into a module that can be removed from the housing. In the event of a defect, such a module can be replaced as a whole. This allows for faster and more flexible repairs.

[0028] The body is preferably equipped with a toilet seat and / or a lid at the opening for the introduction of excrement.

[0029] Another aspect of the invention relates to a mobile toilet device, for example for use at festivals, concerts, sporting events, or on construction sites, comprising a cabin and a dry toilet as described in this document. Brief explanation of the drawings

[0030] Preferred embodiments of the dry toilet according to the invention, which do not limit the invention, are described below with reference to the following drawings. The drawings show: Fig. 1: a perspective view of a first embodiment of a dry toilet; Fig. 2: a front view of the dry toilet of the Fig. 1 Fig. 3: a schematic representation of a second embodiment of a dry toilet; Fig. 4: a schematic representation of a third embodiment of a dry toilet; Fig. 5: a schematic representation of the dry toilet made of Fig. 4, wherein the conveying device is in a different position; Fig. 6: a schematic representation of a fourth embodiment of a dry toilet; Fig. 7: a schematic representation of a fifth embodiment of a dry toilet; Fig. 8: a top view of the conveying device of the dry toilet made of Fig. 7 Fig. 9: a schematic view of a storage tank for pourable collection medium; Fig. 10: a perspective view of the storage tank of the Fig. 9 ; Fig. 11: a perspective view of a drive slide for a dry toilet according to the invention with a conveyor belt. Detailed description of several embodiments of the invention

[0031] A first preferred embodiment of the dry toilet according to the invention is described in the Figures 1 and 2The dry toilet 10 comprises a body indicated by the frame 12, on which a toilet seat 14 is mounted. A conveyor belt 16 is located within the body, transporting a collection medium, preferably absorbent bulk material such as sawdust, paper scraps, plant fibers, or similar, from a storage container 30 to an area below the seat 14, where the user's excrement falls. This collection area is marked with the reference number 18. A deflection station 20 is located downstream of the collection area 18, where the collection medium, along with the collected excrement, is tipped onto the conveyor belt 16 and discharged into an outlet 22. The collection area 18 is laterally bounded by a side barrier 19 in the form of a downwardly widening funnel.

[0032] The toilet 10 further comprises an operating device 24, which is mechanically connected to the conveyor belt 16 in order to move the conveyor belt 16 a certain distance when the user activates an operating element 26 (for example, a foot lever). In this example, this distance is chosen to be at least long enough so that the collection medium in the collection area, along with the excrement collected therein, is conveyed to the outlet 22 by means of a (fully executed) activation of the operating element. The conveyor belt 16 is guided past the outlet funnel 28 of the storage tank 30 and supplied with fresh collection medium. On the outlet side of the funnel 28, i.e., where the conveyor belt 16 moves away from the storage tank 30, there is a passage 32 for the collection medium, the cross-sectional area of ​​which determines the flow rate per conveying section, and thus the dosage of the collection medium.The shape of the passage can also determine the cross-sectional profile of the application of the collecting medium.

[0033] In the Figures 1 and 2 In the illustrated embodiment, the user's excrement falls onto the bed of free-flowing bulk material. After defecating, the user activates the control element 26, which advances the conveyor belt 16 by the predefined distance. During this process, the collection medium in the receiving area 18 and the excrement contained therein are conveyed to the outlet 22, and clean collection medium is made available in the receiving area 18 for the next toilet use.

[0034] The illustrated embodiment functions purely mechanically. The force for advancing the conveyor belt originates from the actuation of the control element 26 and is transmitted to the conveyor belt via a linkage or gear system. The distance the conveyor belt travels with each actuation of the control element 26 can be adjusted via the gear ratio of the linkage or gear system.

[0035] It can be noted that the toilet 10 could alternatively be operated with molded or pressed pellets made from a collection medium; for this purpose, a magazine would preferably be used instead of a bulk storage container, in which the molded or pressed pellets are stored. At the magazine outlet, a positioning device would preferably be provided to position the molded or pressed pellets on the conveyor belt.

[0036] Fig. 3The diagram schematically shows another embodiment of a dry toilet according to the invention. In this case, the conveying device comprises a drum 34, which is operated by the control device (not shown in the diagram). Fig. 3 (shown) is moved by a predefined rotational angle for each operating operation. The drum 34 is arranged such that its axis of rotation runs below the seat 14, so that the collection area 18 corresponds approximately to the apex section of the drum shell. The circumference of the drum is chosen so that the collection medium can be applied to the drum shell just in front of the collection area without slipping off.

[0037] The Figures 4 and 5Figure 1 schematically shows another embodiment of the toilet according to the invention. In this case, the conveying device comprises a drawer 36 that moves back and forth between the collection area and the outlet of the storage reservoir 30, and a scraper 38 against which the top of the drawer 36 is guided during movement. As the drawer extends towards the collection area 18 (to the left into the Figures 4 and 5 ) with collecting medium. Fig. 4 The figure shows drawer 36 in the fully extended position and containing the collecting medium. During the reverse movement of drawer 36 (to the right into the Figures 4 and 5 The scraper 38 wipes the collection medium, along with the collected excrement, over the front edge of the drawer into the outlet 22 located below the collection area 18. In the extended position, the drawer 36 closes the outlet 22 ( Fig. 4), while she releases him in the backward movement.

[0038] In the embodiment of the Figures 4 and 5 The drawer is coupled to a sluice gate 40 in the outlet area of ​​the storage tank 30. During the drawer's reverse movement, a slide gate 44 is simultaneously moved out of the sluice gate area 42, allowing a specific dose of fresh collection medium to slide from the storage tank into this same sluice gate area 42. As the drawer 36 extends, the slide gate 44 moves into the sluice gate area 42 and pushes the collection medium contained therein onto the drawer 36. Because the drawer 36 and the slide gate 44 move synchronously, a uniform distribution of the free-flowing collection medium is achieved.

[0039] The design of also Figures 4 and 5It could be operated with molded or pressed pieces instead of a flowable collection medium if a magazine is used instead of a bulk storage container, in which the molded or pressed pieces are stored.

[0040] Fig. 6Figure 1 schematically shows an embodiment of the invention in which the conveying device comprises a paddle wheel 46. For each operating operation, the paddle wheel 46 is moved by one paddle spacing (in the example shown, this corresponds to 90°). The paddle wheel 46 is arranged such that its axis of rotation is located in a vertical plane running approximately midway between the seat and the outlet of the reservoir. Before a paddle section is moved into the collection area 18 below the seat 14, it is filled with a collection medium. By rotating by one paddle spacing, the filled paddle section enters the collection area 18 to collect the excrement of the next toilet user. When the paddle wheel 46 then moves by another paddle spacing, the collection medium and the collected excrement fall into the outlet 22.

[0041] The Figures 7 and 8These provisions relate to an embodiment of the invention in which the conveying device has a slide 50 rotatably mounted on a base plate 48. In the example shown, the slide 50 is designed as a perforated plate which has openings 52 arranged eccentrically around the axis of rotation at uniform angular intervals for conveying a single dose (e.g., of a molded or pressed piece) of the receiving medium. The base plate 48, located below the slide, has an opening 54 which forms the outlet 22 or leads into it. The angular interval is to be understood as the distance between the centers of adjacent openings and therefore corresponds to 360° / N, where N denotes the number of openings of the slide 50. The slide 50 is rotated by the operating device by the angular interval for each operating operation, which rotates the opening of the slide located in the receiving area at least over the opening 54 in the base plate.The collecting medium, along with the collected excretions, is taken along by the slide 50 and pushed into the outlet 22. The storage reservoir 30 is illustrated as a magazine that holds molded or pressed pellets 56 of the collecting medium. The operating device and the conveying device are designed such that at the beginning and end of each operating process, an opening of the slide is located in the collection area.

[0042] Fig. 8Figure 50 shows an example of the slide valve 50 in a top view. For better differentiation, the openings 52 are additionally marked with the letters AD. In the position shown, opening 52A is located below the outlet of the reservoir 30, where a fresh dose of the collection medium is introduced into opening 52A. Opening 52C, on the other hand, is located in the collection area 18 below the seat. Opening 52D is located above opening 54 in the base plate 48. Opening 52B is located in an intermediate position between the outlet of the reservoir and the collection area 18. For each operating operation, the perforated plate shown in the example moves by an angular distance of 90° (= 360° / N, with N = 4). The starting and ending positions of each operating operation are characterized by an opening of the slide valve being located in the collection area.

[0043] Within the scope of the invention, it is possible to use a slide valve with only one opening arranged eccentrically to the axis of rotation (N = 1). In this case, the operating device and the conveying device are designed such that the slide valve completes one full rotation per operating operation, with the opening located in the collection area at the beginning and end of this rotation. During the operating operation, the opening first moves from the collection area to the opening in the base plate, where the collection medium, along with the collected excretions, is pushed into the outlet. In the subsequent rotation, the opening is moved to the outlet of the reservoir, where a fresh dose of the collection medium is introduced into the opening. From there, the opening, now filled with collection medium, is returned to its starting position in the collection area.

[0044] The Figure 9 and 10show a preferred embodiment of a storage reservoir for the collection medium, particularly for use in a dry toilet as in the Figures 1 and 2 As illustrated. Generally speaking, loose materials are easier to dose, while compressed materials are difficult to dose. If the material is uncompressed, it is advantageous to transport it on a conveyor belt. Reducing the cross-section of the reservoir leads to stresses that increase the risk of blockages. Conversely, lateral openings or an increase in the cross-section reduce vertical stress.

[0045] Fig. 9 Figure 1 schematically illustrates the structure of a reservoir 130 with a flow-through metering device 132. The following are designated: F m the force required to move the conveyor belt 116, r b the reservoir width, ub the lower reservoir opening width, l l the length of the relaxation zone 128, dh the height of the dispensing opening and α the angle between the reservoir wall and the voltage reducer 129.

[0046] The bulk material reservoir with metering device is designed to minimize both the force required to move the conveyor belt and the vertical pressure within the bulk material. This enables energy-efficient operation of the dry toilet and optimal (resource-saving) metering of the bulk material. The function of the tension reducer 129 is to reduce the tension within the bulk material without causing the reservoir to become clogged by tension arcs forming within the material. The tension reducer 129 is shaped so that the path of tension arcs extends to the conveyor belt 116. The latter circulates the bulk material (the collection medium) within the tension reducer and prevents potential blockages. Tests with a mixture of sawdust and shavings have shown that the lower reservoir opening width ub approximately 75% of the reservoir width r b should be, if r b = 200 mm and α = 40°.

[0047] The optimal length values l l the relaxation zone 128 and the dosage level dh are highly dependent on the collection medium used. Therefore, this partial geometry is preferably designed to be variable, so that both values ​​can be adjusted. The length can be approximated as follows: l l the loosening zone 128 the radius of a conical pile of bulk material with the maximum possible height hs are equivalent to. hs This corresponds to the height of the inlet opening of the voltage reducer. Since the normal voltage in the outer area of ​​such a bulk material pile is close to zero, the material can be dosed precisely.

[0048] Fig. 10Figure 1 shows a perspective view of the storage tank 130 with the feed-through dispenser 132. In the example shown, the feed-through dispenser 132 consists of a central section, the actual dispenser, and two side sections 133 arranged at right angles to it. Each side section has a vertically extending slot. The storage tank 130 includes two side boundaries 127 of the loosening zone 128 at its outlet, each of which has two horizontally extending slots. The width of the feed-through dispenser 132 corresponds to the inner width (in the transverse direction of the conveyor belt) between the side boundaries of the loosening zone 128, so that when the feed-through dispenser 132 is installed, its side sections rest against the side boundaries of the loosening zone 128. The slots serve to fasten the feed-through dispenser 132 to the side boundaries of the loosening zone 128 in the desired position using screws and nuts.The slots allow the through-doser 132 to be positioned at the optimal distance to the conveyor belt (. dh ) to place and the effective length of the loosening zone 128 ( l l to determine.

[0049] The Figure 11 shows a possible detail of a conveying device with a conveyor belt 216 as it is used in the design of the Figures 1 and 2The conveyor belt 216 has a longitudinal rail 218 on its frame, on which a slidably mounted carrier carriage 220 can travel back and forth a certain distance. This distance corresponds to the predefined feed length by which the operating device advances the conveyor belt per operating operation. The carriage 220 has a first 221 and a second 222 gripping jaw, which are arranged on both sides of the conveyor belt 216 to clamp an edge region of the conveyor belt 216 between them. The carrier carriage 220 includes a rotatably mounted lever device 224, which carries the first gripping jaw 221. The second gripping jaw 222 is fixed to the carriage 220. The first gripping jaw 221 is arranged eccentrically to the axis of rotation 226 of the lever device 224, such that it (a) by actuating the lever 228 of the lever device in one direction of movement of the carrier slide (which corresponds to the feed direction of the conveyor belt) the conveyor belt 216 is pressed against the second gripping jaw 222, and (b) by actuating the lever 228 of the lever device in the opposite direction of movement of the carrier slide away from the second gripping jaw 222, thus causing the previously clamped conveyor belt 216 to be released.

[0050] This ensures that when a force acts on the lever 228 in the feed direction R of the conveyor belt 216, the first gripper jaw 221 is initially brought into the clamping position by rotation about the axis of rotation 226. Once the conveyor belt 216 is clamped between the gripper jaws 221 and 222, the carriage moves along its rail while the force on the lever 228 is maintained in the feed direction R. The carriage 220 pulls the clamped conveyor belt 216 along with it, moving it by the predefined feed length. At the end of this travel, when the direction of the force on the lever 228 is reversed, the first gripper jaw 221 rotates out of the clamping position, thereby releasing the conveyor belt 216. If the force is maintained in the reverse direction, the carriage 220 is then moved back to its starting position on its rail 218 without pulling the conveyor belt 216 along with it.

[0051] The lever 228 is preferably effectively connected to the operating element (for example, a pedal or an operating lever) via a linkage or a transmission. This is shown in the Figures 1 and 2 only hinted at.

[0052] Although specific embodiments have been discussed in detail, knowledgeable readers will readily recognize that, starting from the embodiments described herein, alternative and modified embodiments can be developed. The embodiments described herein are therefore intended only to illustrate the invention and are not to be understood as limiting the scope of this invention, in particular not the scope of protection of the following patent claims, including their equivalent scope.

Claims

1. A dry toilet, comprising: a body with an opening for introducing excreta of a user, a storage tank for a collecting medium, a collecting area below the opening in the body for collecting the excreta; a conveying device for transporting the collecting medium from the storage tank to the collecting area and the collecting medium together with the collected excreta from the collecting area to an outlet; an operating device which is operatively connected to the conveying device in order to trigger, for example when actuated by the user, the transport process of the collecting medium located in the collecting area together with the collected excreta to the outlet and the provision of a new dosage of the collecting medium in the collecting area.

2. Dry toilet according to claim 1, wherein the conveying device comprises a conveyor belt which is moved by the operating device by a predefined feed length per operating operation.

3. Dry toilet according to claim 2, wherein the conveyor belt has a deflection station on the outlet side of the collecting area, at which collecting medium lying on the conveyor belt, together with collected excretions, can be tipped into the outlet.

4. Dry toilet according to claim 2 or 3, wherein the conveying device comprises a displaceably mounted carrier carriage, wherein the carriage has a first and a second gripping jaw for clamping the conveyor belt therebetween, wherein the first gripping jaw is pressed against the second gripping jaw by means of a lever device rotatably mounted on the carrier carriage by actuating the lever device in one displacement direction of the carrier carriage while clamping the conveyor belt, and releases the conveyor belt by actuating the lever device in the opposite displacement direction of the carrier carriage.

5. Dry toilet according to claim 1, wherein the conveying device comprises a drum which is moved by the operating device by a predefined angle of rotation per operating operation.

6. Dry toilet according to claim 1, wherein the conveying device comprises a paddle wheel which is moved by the operating device by one paddle pitch per operating operation.

7. Dry toilet according to claim 1, wherein the conveying device comprises a slide which is rotatably mounted on a base plate, wherein the slide has one or more eccentric openings arranged at equal angular intervals for each carrying a dosage of the collecting medium, wherein the base plate has an opening which represents the outlet or leads into it, and wherein the slide, which can be a perforated plate, for example, is rotated by the operating device per operating operation by the angular distance which rotates the opening of the slide located in the collecting area over the opening in the base plate or beyond it.

8. Dry toilet according to claim 1, wherein the conveying device has a drawer which can be moved back and forth between the collecting area and the outlet of the storage tank and a scraper, past which the top side of the drawer is guided during movement, wherein the conveying device is designed in such a way that the top side of the drawer is subjected to collecting medium during extension in the direction of the collecting area and that the scraper, during the backward movement of the drawer, scrapes the collecting medium together with the collected excretions over the front edge of the drawer into the outlet which is opened up by the drawer during the backward movement.

9. Dry toilet according to any one of claims 1 to 8, wherein the operating device comprises a lever, for example a pedal, which is mechanically connected to the conveying device in order to drive it.

10. Dry toilet according to any one of claims 1 to 9, wherein the conveying device is driven purely mechanically by the operating device.

11. A dry toilet according to any one of claims 1 to 8, wherein the conveying device comprises an electric motor and wherein the operating device comprises a motor controller with a user interface.

12. Dry toilet according to any one of claims 1 to 11, wherein the storage tank is a bulk storage tank.

13. Dry toilet according to claim 12, comprising a dosing device, for example an impeller, a conveyor screw, a dosing lock, or a passage arranged on the conveyor device for the collecting medium, the cross-sectional area of which determines the passage quantity per conveyor section.

14. Dry toilet according to any one of claims 1 to 11, wherein the storage means is a magazine for moldings or pellets from the collecting medium.

15. A dry toilet according to any one of claims 1 to 14, further comprising a separating device for separately discharging urine.

16. A mobile toilet device, for example for use at festivals, concerts, sporting events, or on construction sites, comprising a cabin and a dry toilet according to any one of claims 1 to 15.

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