DE102021109907B4 - Base body for a working chamber of a fluid processing machine and method for producing a base body - Google Patents

Abstract

Base body (11) for a working chamber (10) of a fluid processing machine, wherein the base body (11) has an inner body (14) and an outer body (15) surrounding the inner body (14), wherein an intermediate space (13) is formed between the inner body (14) and the outer body (15), which surrounds the interior space (12) on several sides and which is filled with a particle filling and/or a hardened filling (38), wherein several connecting parts (22) are arranged in the intermediate space (13) and are fastened both to the inner body (14) and to the outer body (15), wherein each connecting part (22) has a plate-shaped section (31) which extends obliquely or at right angles to the inner body (14) and which has one or more recesses (32), each of which forms a through-opening (34) for the particle filling or the not yet hardened filling (38), and wherein the intermediate space (13) is designed to be connected in such a way is that a pourable and/or flowable medium can reach every point in the intermediate space (13).

Description

The invention relates to a base body for a working chamber of a fluid processing machine. The invention also relates to a method for producing such a base body. The base body of the working chamber defines an interior space in which a workpiece can be processed with at least one fluid jet of a fluid tool. The fluid processing machine is particularly designed to deburr and/or clean and/or blow off a workpiece.

During fluid processing, fluid is ejected from at least one fluid tool and directed at the workpiece. This can remove material particles from the workpiece, such as a burr on a workpiece or dirt particles adhering to the workpiece. Such material particles can be carried along by the fluid jet. The interior of the working chamber or the base body must therefore be enclosed. In addition, loud noises are generated during fluid processing of the workpiece. High process temperatures are often required or generated in the interior of the base body (working chamber). In order to protect an operator of the fluid processing machine or other people in the vicinity of the fluid processing machine, it is necessary or at least desirable to limit the noise level. Likewise, in applications with higher process temperatures, good thermal insulation is desirable for reasons of energy efficiency but also to protect the operating personnel.

For working chambers with a large length and/or large volume, the effort and costs required to meet the above requirements are considerable.

DE 10 2010 056 211 A1 describes a multi-layered cladding element for a machine tool. Individual cladding elements are connected to one another via fittings. The plate-shaped multi-layer cladding elements can have a layer of metal foam covered with a foil. An aluminum sheet can serve as the outer layer, while a steel sheet is used as the sealing layer. A multi-layer wall cladding is also available in DE 28 00 914 C2 described.

Out of JP 2014-144510 A A panel structure for producing a machine cover is known. The panel structure has sheet metal parts between which filling material, for example foamed balls, is filled. Such prefabricated wall parts are connected to one another to form the machine cover, for example using bolts and rivets.

DE 32 06 735 A1 reveals a machine frame with a cavity filled with quartz sand to dampen vibrations. A similar machine tool is also available from DE 100 46 868 C2 out.

Therefore, it can be considered an object of the present invention to provide a stable base body for forming a working chamber for a fluid processing machine, which enables a cost-effective construction and good sound insulation and/or vibration damping and/or thermal insulation.

This object is achieved by a base body having the features of patent claim 1 and a method having the features of patent claim 12.

The base body according to the invention is designed to construct a working chamber of a fluid processing machine. A workpiece can be machined with a fluid tool in an interior of the base body by emitting at least one fluid jet from the fluid tool onto the workpiece. The workpiece can be deburred and/or cleaned and/or blown off. Depending on the work process, the required fluid(s) are supplied to the fluid tool under the pressure required in each case. The deburring and/or cleaning of a workpiece is preferably carried out using a liquid. For deburring, for example, water, a cooling lubricant or a cutting oil can be used. For cleaning, the fluid used can contain water and optionally an admixed cleaning agent. A gaseous fluid, in particular air, is preferably used for blowing off. During processing, the process temperatures in the interior of the base body can be, for example, at least 40°C and/or up to 60°C.

The base body according to the invention for a working chamber of a fluid processing machine is designed in a sandwich construction. It has an inner body and an outer body surrounding the inner body. The inner body delimits an interior space in which the processing of the workpiece takes place. An intermediate space is formed between the inner body and the outer body. The intermediate space is preferably present between all inner and outer walls of the inner body and the outer body. The intermediate space is designed to be continuous. A continuous design of the intermediate space is to be understood as meaning that a pourable and/or the flowable medium can reach every point in the gap. Preferably, fluidically separated compartments are not formed in the gap. All sections of the gap are connected to one another via openings or passages.

The gap is filled with a non-curable particle filling and/or a cured filling.

The particle filling consists of loose particles without a strong bond to each other, for example sand. Sand has excellent insulation and damping properties. A particle filling can require increased structural rigidity of the inner body and the outer body compared to a hardened filling.

A hardening filling is preferred which forms at least one solid filling body in the hardened state. Each filling body is formed from the hardened filling and forms a monolith. In a preferred embodiment, there is only a single filling body formed by the hardened filling in the intermediate space. Alternatively, several separate filling bodies could also be formed by the hardened filling. The filling body or all filling bodies together enclose the inner body on all inner walls of the inner body.

The free-flowing and/or flowable and/or foam-like filling material introduced into the gap can consist of a preferably hardenable natural or artificial material, for example a mineral building material or plastic. Concrete, aerated concrete, cement, mortar or screed can be used as a hardenable mineral building material. As an alternative to the mineral building material, a flowable, hardenable plastic can also be used, for example a synthetic resin, in particular epoxy resin. The filling material introduced into the gap can also be in the form of foam, so that the gap is filled with foam and the foam forms at least one filling body after hardening. Materials that are also used as assembly foams can be used for foaming, for example assembly foams containing polyurethane.

In the case of the base body according to the invention, the inner body is not in direct contact with the outer body. The filling better decouples the inner body from the outer body in terms of vibration transmission and/or heat transfer. This sandwich construction method allows base bodies with a large length and/or a large interior volume to be produced cost-effectively and with sufficient stability. The thermal insulation is therefore 20 to 100 times better than with designs with solid steel or aluminum walls.

The wall thicknesses for the inner body and the outer body can be chosen to be smaller than with solid metal base bodies thanks to the sandwich construction. The space between the inner side walls and the outer side walls can be, for example, 20 mm to 80 mm and preferably around 50 mm. The ideal thickness of the filling depends in particular on the filling material used. The wall thickness for the outer body and/or the inner body can be, for example, between 2 mm and 8 mm. In one embodiment, the wall thickness is less than 5 mm in each case.

Preferably, the inner body and/or the outer body are made of metal or a metal alloy, in particular a steel alloy. It is preferred if the inner body and the outer body are not made of aluminum or an aluminum alloy.

It is advantageous if the inner body and the outer body are each constructed from a plurality of interconnected sheets, in particular steel sheets. The sheets are permanently connected to one another, for example by an adhesive connection and/or a welded connection and/or another material connection.

In one embodiment, the inner body has an inner base and at least one inner side wall that adjoins the inner base. The inner base and the at least one inner side wall delimit the interior. In a cuboid-shaped interior, the inner body has four inner side walls.

Analogously, the outer body can have an outer base and at least one outer side wall. Depending on the geometric contour of the inner body, the outer body has a number of outer side walls, which preferably corresponds to the number of inner side walls. For example, the outer body can have four outer side walls.

In one embodiment, the outer base can be aligned horizontally. The inner base can preferably have sections that are inclined relative to the horizontal so that fluid can be directed to a drain in the base body. The space between the inner base and the outer base can thus be adjusted depending on the inclined sections. of the inner floor can vary in height. Between the outer side walls and the inner side walls, the gap preferably has a constant dimension, which is measured at right angles to the inner side wall or outer side wall.

The base body has several connecting parts that are arranged in the space between them and are firmly connected to both the inner body and the outer body. The connecting parts form anchor parts between the inner body and the outer body that can absorb tensile forces when the particle filling or the hardenable filling is filled in while it is not yet hardened and then hardens. Due to the weight of the filling and/or volume changes during hardening, the connecting parts can prevent the inner wall or the outer wall from deforming to an undesirable extent. In particular, buckling of the inner wall and/or the outer wall can be limited or prevented. This measure allows the inner wall and/or the outer wall to be made particularly thin.

Each connecting part is preferably connected to the inner body and the outer body at several connection points, whereby, for example, a material connection and/or adhesive connection - preferably a local welded connection - can be produced at each connection point.

Each connecting part has a plate-shaped section. The plate-shaped section preferably extends through the intermediate space at an angle or at a right angle to the adjacent inner and/or outer wall. It can have an angled foot section on one side, which is connected to the inner body or preferably the outer body, for example by local and in particular point-shaped welds. On the side opposite the foot section, the plate-shaped section can be connected at several points with its edge to the other body (outer body or inner body), preferably by local, in particular point-shaped welds. The plate-shaped section has one or more recesses so that flowable filling material can pass through the at least one recess and the intermediate space is not divided into individual areas or chambers by the plate-shaped section.

According to one aspect of the invention, the base body is manufactured as follows:

First, the inner body and the outer body are manufactured, for example by connecting individual sheets, in particular by adhesive connections and/or welded connections. In this case, a preferably continuous gap is formed between the inner body and the outer body. In particular, when manufacturing the inner and outer bodies, connecting parts can be connected to both the inner body and the outer body and penetrate the gap between the inner and outer bodies. The connecting parts are preferably attached to the inner body and the outer body in a materially bonded manner, e.g. by welding or gluing. The connecting parts are preferably arranged both between the outer base and the inner base, and between each existing outer side wall and each existing inner side wall.

A filling material is then filled into the gap so that the filling material surrounds the inner body both on the inner base and on at least one inner side wall. The gap is preferably completely filled. The filling material is in a free-flowing and/or flowable and/or foamy state at least when it is filled in. The filling material can be a particle filling, whereby the particles do not have or form a direct solid connection with one another. Preferably, a hardenable filling material is used which hardens after being filled into the gap and forms the hardened filling. The hardened filling preferably represents at least one and in particular exactly one coherent filling body.

• 1 eine perspektivische Darstellung eines Ausführungsbeispiels einer Arbeitskammer,
• 2 eine perspektivische Darstellung eines Grundkörpers der Arbeitskammer aus 1,
• 3 eine schematische, blockschaltbildähnliche Darstellung eines Ausführungsbeispiels eines Grundkörpers mit Blick von oben in den Innenraum des Grundkörpers,
• 4 ein Ausführungsbeispiel eines in einem Zwischenraum zwischen einem Verbindungsteil, das zwischen einem Innenkörper und einem Außenkörper des Grundkörpers angeordnet ist und
• 5 einen Längsschnitt durch den Grundkörper aus 2 und
• 6 eine perspektivische Darstellung eines Ausführungsbeispiels eines Befestigungselements zur Verbindung einer Außenseitenwand des Außenkörpers mit einem Verbindungsteil.

Advantageous embodiments of the invention emerge from the dependent patent claims, the description and the drawings. Preferred embodiments of the invention are explained in detail below with reference to the accompanying drawings. They show:

• 1 a perspective view of an embodiment of a working chamber,
• 2 a perspective view of a basic body of the working chamber from 1 ,
• 3 a schematic, block diagram-like representation of an embodiment of a base body with a view from above into the interior of the base body,
• 4 an embodiment of a in a space between a connecting part which is arranged between an inner body and an outer body of the base body and
• 5 a longitudinal section through the base body 2 and
• 6 a perspective view of an embodiment of a fastening element for connecting an outer side wall of the outer body to a connecting part.

1 shows an embodiment of a working chamber 10 in a perspective view. The working chamber 10 has a base body 11. An embodiment of the base body 11 is shown in 2 illustrated. 3 shows a schematic principle representation of the base body 11 in a view from above into an interior space 12 and an intermediate space 13 between an inner body 14 and an outer body 15 of the base body 11.

The interior space 12 is delimited by the inner body 14 on several sides. For this purpose, the inner body 14 has an inner base 14b and at least one inner side wall 14s. In the exemplary embodiment, the inner body 14 has two inner side walls 14s which lie opposite one another in a longitudinal direction L on opposite sides of the interior space 12. In addition, the inner body 14 has two inner side walls 14s which lie opposite one another in a transverse direction Q on opposite sides of the interior space 12. The inner side walls 14s are each connected to the inner base 14b. The two inner side walls 14s extending in the longitudinal direction L are each connected at their longitudinal ends by an inner side wall 14s extending in the transverse direction Q. The inner body 14 is at least partially open on the side opposite the inner base 14b and has an access opening 16 there. The interior 12 is accessible via the access opening 16, in particular in order to arrange a workpiece in the interior 12 or to remove it from the interior 12.

Analogous to the inner body 14, the outer body 15 has an outer base 15b and at least one outer side wall 15s connected to the outer base 15b. The number and orientation of the outer side walls 15s in space preferably corresponds to the number and orientation of the inner side walls 14s of the inner body 14. Therefore, in the preferred embodiment, there are two outer side walls 15s extending in the longitudinal direction L, which are arranged parallel to the respective immediately adjacent inner side wall 14s. In addition, the outer body 15 has two outer side walls 15s which extend in the transverse direction Q, which are arranged parallel to the respective immediately adjacent inner side wall 14s and which connect the longitudinal ends of the two outer side walls 15s extending in the longitudinal direction L to one another.

The inner body 14 and the outer body 15 are constructed in the embodiment by interconnected sheets 20. The number of sheets 20 that form an inner side wall 14s or an outer side wall 15s or the inner bottom 14b or the outer bottom 15b can vary, depending on the dimension of the base body 11. As shown schematically, for example, in 3 As can be seen, the inner side walls 14s and outer side walls 15s extending in the longitudinal direction can each be formed by two sheets 20. The inner side walls 14s and outer side walls 15s extending in the transverse direction Q can, for example, be formed by a single sheet 20. In 3 It can also be seen that the inner base 14b is formed by several, for example four, sheets 20. Analogously, the outer base 15b can also be formed by several sheets 20.

The sheets 20 are preferably connected to one another without interruption along the abutting edges, in particular by a welded connection and/or an adhesive connection.

The sheets 20 preferably consist of a metal alloy, in particular a steel alloy. Aluminum sheets are preferably not used.

As is particularly the case in 5 As can be seen, the outer base 15b can be aligned parallel to a plane which is preferably aligned horizontally. The plane in which the outer base 15b extends is spanned by the longitudinal direction L and the transverse direction Q in the exemplary embodiment.

A vertical direction H extends at right angles to it, so that the longitudinal direction L, the transverse direction Q and the vertical direction H form a Cartesian coordinate system.

In 5 it can be seen that the inner floor 14b is not aligned parallel to the outer floor 15b. The inner floor 14b has two sections that are inclined to the horizontal and approach the outer floor 15b in the direction of a drain 21. In the exemplary embodiment, the drain 21 is arranged centrally in the longitudinal direction L. By inclining the inner floor 14b towards the drain 21, the drainage of liquids from the interior 12 can be improved during operation of the fluid processing machine. Dirt particles can also be drained away together with the liquid. The drain 21 can optionally be connected to a suction device in order to actively suck fluids and/or particles out of the interior 12.

The intermediate space 13 between the inner body 14 and the outer body 15 is designed such that the inner body 14 and the outer body 15 do not have direct surface contact with one another. The intermediate space 13 is preferably designed to be continuous. The intermediate space 13 therefore separates the outer base 15b from the inner base 14b and the outer side walls 15s from the inner side walls 14s.

As shown schematically in 3 and also in 5 As can be seen, the outer body 15 and the inner body 14 are connected to one another via a plurality of connecting parts 22, so that the relative position between the inner body 14 and the outer body 15 is predetermined. Each connecting part 22 is immovably attached to the outer body 15 and immovably attached to the inner body 14, preferably by means of a material connection and/or an adhesive connection.

It is advantageous if each connecting part 22 is connected to the outer body 15 at several local external connection points 23 and to the inner body 14 at several local internal connection points 24, as is exemplified for the embodiment of the connecting part 22 in 4 The number of inner connection points 24 and the number of outer connection points 23 can vary and can be the same size or different sizes. In the exemplary embodiment, the number of outer connection points 23 is greater than the number of inner connection points 24.

In the case of the connecting parts 22 which are arranged between the outer side walls 15s and the inner side walls 14s, the inner connecting points 24 are arranged, for example, along a straight line in the vertical direction H at a distance from one another. Analogously, the outer connecting points 23 can also be arranged in the vertical direction H along a common straight line at a distance from one another.

In the case of the connecting parts arranged between the outer base 15b and the inner base 14b, the outer connecting points of each connecting part 22 can be arranged along a common straight line, which can extend, for example, parallel to the longitudinal direction L. The inner connecting points 24 can extend along a straight line corresponding to the inclination of the inclined sections of the inner base 14b ( 5 ).

Each connecting part 22 can consist of the same material as the outer body 15 or the inner body 14. For example, the connecting part 22 can be made from a sheet metal part, in particular a steel sheet, by a separating process and a bending process.

In 4 an embodiment of a connecting part 22 is illustrated. The connecting part has a foot section 28 extending along a plane. The foot section 28 is preferably connected to the inside of the outer side wall 15s or the outer base 15b facing the intermediate space 13 and lies flat there, for example. The foot section 28 has a side edge 29 extending along the entire connecting part 22. On the side opposite the side edge 29, the connecting part 22 has a bending edge 30, at which the foot section 28 merges into a plate-shaped section 31. The plate-shaped section 31 and the foot section 28 enclose a right angle, for example. In any case, the plate-shaped section 31 projects obliquely or at a right angle from the foot section 28.

The plate-shaped section 31 has one or more recesses 32 that completely penetrate the plate-shaped section 31. The recesses 32 can each form a hole and thus be completely enclosed by an edge of the plate-shaped section 31. In the exemplary embodiment, the recesses 32 are open on the side facing away from the foot section 28. Each recess 32 is delimited, for example, by an arcuate and in particular circular arc-shaped edge of the plate-shaped section 31.

The recesses 32 are arranged at a distance from one another. A connecting edge 33 is immediately adjacent to each recess 32 on each side. All connecting edges 33 of a connecting part 22 extend in a common plane, wherein this plane is preferably aligned parallel to the foot section 28. At each connecting edge 33, the connecting part 22 can be connected to an inner side wall 14s or the inner base 14b by a local welded connection or adhesive connection. At each connecting edge 33, an inner connection point 24 is preferably present.

The recesses 32 between the inner connection points 24 form a through opening 34 within the intermediate space 13 when the connection is made with the associated inner side wall 14s or the inner base 14b.

An initially flowable and/or foam-like filling material is filled into the intermediate space 13 at one or more points between an outer side wall 15s and an inner side wall 14s, which is distributed throughout the entire intermediate space 13. The distribution of the filling material rials is significantly improved by the through openings 34. After the filling material has been filled into the intermediate space 13, the filling material is cured as in the example and forms a cured filling 38. The cured filling 38 is continuous in the embodiment and thus forms a single integral filling body 39. If the intermediate space 13 is divided into several separate chambers, the filling material must be filled into each chamber and cured. After curing, the cured filling 38 then forms several separate filling bodies 39.

The filling 38 can be, for example, a mineral building material (e.g. concrete, cement, mortar or screed) or plastic (e.g. synthetic resin, in particular epoxy resin). As an alternative to a hardenable filling material, a particle filling consisting of loose particles, such as sand, can also be used as the filling 38.

The filling 38 encloses the inner body 14 on each existing inner side wall 14s and on the inner bottom 14b. Preferably, the cavity in the intermediate space 13 that exists before the filling material is filled in is completely filled by the filling 38. The filling 38 and the at least one filling body 39 formed is highly schematically shown by cross-hatching in 3 illustrated.

Based on the 5 and 6 it can be seen that a connecting part 22 arranged between the inner base 14b and the outer base 15b can be connected to the immediately adjacent outer side wall 15s via at least one fastening element in preferably several fastening elements 40. The fastening element 40 is in particular accessible from the outside on the outer side wall 15s and can have, for example, an accessible internal thread or another fastening means there. The fastening element 40 preferably has a non-rotationally symmetrical outer surface and in the exemplary embodiment has a polygonal outer cross-section at least in sections. Between these sections with a polygonal outer cross-section, each fastening element 40 has one or more recesses, which in the exemplary embodiment are designed as circumferential grooves 41. Each fastening element 40 has at least one recess or groove 41.

The fastening elements 40 pass through the intermediate space 13. By filling in the pourable and/or flowable or foam-like filling material, the fastening elements 40 are enclosed by the filling material. When using a hardenable filling material, the fastening elements 40 are firmly anchored in the filling 38 after hardening. The non-rotationally symmetrical sections, which for example have a polygonal outer cross-section, represent a rotation lock of the fastening element 40 within the preferably hardened filling 38. The grooves 41 or other depressions in the fastening element 40 form a positive connection for supporting tensile forces acting on the fastening element 40 with force components at right angles to the outer side wall 15s. For example, retaining screws or other holding means can be attached to the fastening elements 40 in order to anchor the base body 11 in the fluid processing machine. The fastening elements 40 can be arranged at any suitable location in the area of the gap.

The base body 11 can be manufactured as follows:

First, the inner body 14 and the outer body 15 are made from the sheets 20. The connecting parts 22 are arranged between the inner body 14 and the outer body 15 so that the intermediate space 13 is formed. The connecting parts 22 are connected to the outer body 15 and the inner body 14 by a material connection and/or an adhesive connection so that they can absorb tensile forces.

Optionally, the fastening elements 40 can be arranged between one of the outer side walls 15s and an adjacent connecting part 22, for example by means of a material connection and/or an adhesive connection both to the outer side wall 15s and to the connecting part 22.

Then, pourable or flowable or foam-like filling material is filled into the intermediate space 13 and is distributed in the intermediate space 13. The filling material is preferably hardened and forms at least one and preferably exactly one coherent filling body 39.

The base body 11 thus produced is then equipped with further components in order to form the working chamber 10 according to 1 During the machining of a workpiece in the interior 12, the latter is closed by means of a cover unit 45 in the area of the access opening 16. In the embodiment according to 1 The cover unit 45 has a cover 46, which in the embodiment is constructed from two separate cover parts 47. The cover 46 extends in the longitudinal direction L and in the transverse direction Q and is mounted on the base body 11 so as to be displaceable in the longitudinal direction L. The cover 46 can be moved between a closed position S (in 1 shown) and an open position O, for example by a linear movement of the cover parts 47 in the transverse direction Q. The cover parts 47 can, for example, be moved in opposite directions to one another in the transverse direction Q or alternatively can be pivoted. The open position O is in 1 schematically illustrated by dashed lines.

The cover unit 45 also includes two flexible or deflectable cover parts 48, which are located on opposite sides of the cover 46 and are each connected to the cover 46 at one longitudinal end. The cover parts 48 can, for example, be formed from slats that are connected to one another in an articulated manner. Due to the deflectability or deflectability of the cover parts 48 out of the plane of the access opening 16, the entire cover unit 45 can be moved along the base body 11 in the longitudinal direction L. The access opening 16 is reliably covered during operation of the fluid processing machine.

The working chamber 10 also has a holder 49 for a fluid tool, which projects into the interior 12 with its at least one fluid outlet opening. To attach the holder 49, the base body 11 can have a holding recess 50, which is in the 2 and 5 can be seen. The holding recess 50 is preferably arranged centrally or in the middle of the base body 11 in the longitudinal direction L and is closed off from the intermediate space 13 by metal sheets in order to prevent the filling material from escaping from the intermediate space 13 when it is filled in.

Analogous to the holding recess 50, further recesses can be provided in the base body 11 if necessary.

The invention relates to a base body 11 for a working chamber 10 of a fluid processing machine and a method for producing the base body 11. The base body 11 is double-walled and has an inner body 14 and an outer body 15 that surrounds the inner body 14 at a distance. A preferably continuous intermediate space 13 is formed between the inner body 14 and the outer body 15, into which a preferably hardenable filling material is filled and hardened. The hardened filling 38 forms one or more filling bodies 39 between the inner body 14 and the outer body 15.

List of reference symbols:

10

labor chamber

11

base body

12

interior

13

space

14

inner body

14b

interior floor

14s

inner side wall

15

outer body

15b

outdoor floor

15s

outside wall

16

access opening

20

sheet metal

21

Sequence

22

connecting part

23

outer connection point

24

inner connection point

28

foot section

29

side edge

30

bending edge

31

plate-shaped section

32

recess

33

connecting edge

34

passage opening

38

filling

39

packing

40

fastener

41

Nut

45

cover unit

46

Lid

47

lid parts

48

cover part

49

bracket

50

retaining recess

H

vertical direction

L

longitudinal direction

O

disclosure

Q

transverse direction

S

closed position

Claims (12)

Base body (11) for a working chamber (10) of a fluid processing machine, wherein the base body (11) has an inner body (14) and an outer body (15) surrounding the inner body (14) wherein an intermediate space (13) is formed between the inner body (14) and the outer body (15), which intermediate space (13) surrounds the interior space (12) on several sides and which is filled with a particle filling and/or a hardened filling (38), wherein several connecting parts (22) are arranged in the intermediate space (13) and are fastened both to the inner body (14) and to the outer body (15), wherein each connecting part (22) has a plate-shaped section (31) which extends obliquely or at right angles to the inner body (14) and which has one or more recesses (32), each of which forms a through-opening (34) for the particle filling or the not yet hardened filling (38), and wherein the intermediate space (13) is designed to be continuous in such a way that a pourable and/or flowable medium filled in can reach every point in the intermediate space (13). base body after claim 1 , wherein the inner body (14) and the outer body (15) consist of metal or a metal alloy. base body after claim 1 or 2 , wherein the inner body (14) and the outer body (15) are each constructed from a plurality of interconnected sheets (20). base body after claim 3 , wherein the sheets (20) are connected to one another by a material fit and/or by means of an adhesive connection. Base body according to one of the preceding claims, wherein the inner body (14) has an inner base (14b) and at least one inner side wall (14s) which delimit the interior space (12). base body after claim 5 , wherein the inner base (14b) has sections inclined to the horizontal. base body after claim 5 or 6 , having an access opening (16) to the interior (12) on the side opposite the inner floor (14b). Base body according to one of the preceding claims, wherein the outer body (15) has an outer bottom (15b) and at least one outer side wall (15s). base body after claim 8 , whereby the outer floor (no constraint, can also run parallel to the inner floor, or stepped (15b) is aligned parallel to the horizontal. Base body according to one of the preceding claims, wherein the particle filling and/or the hardened filling (38) surrounds the inner body (14) on the sides at which the inner body (14) and the outer body (15) form the intermediate space (13). Base body according to one of the preceding claims, wherein the filling (38) consists of a hardened mineral building material or plastic. Method for producing a base body (11) for a working chamber (10) of a fluid processing machine according to one of the preceding claims, with the following steps: - producing an inner body (14) and an outer body (15), wherein the outer body (15) surrounds the inner body (14) to form an intermediate space (13), wherein during the production of the inner body (14) and the outer body (15) several connecting parts (22) are arranged in the intermediate space (13) and are firmly connected to both the inner body (14) and the outer body (15), - filling a particle filling and/or filling a curable, flowable and/or foam-like filling material into the intermediate space (13) and curing the curable filling material.

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