DE2700576A1 - Closure system for guideways - includes several vertically aligned panels, each having opposite ends slidably engaged in vertically disposed guides - Google Patents

Abstract

The end closure system is for selectively opening and closing at least one preselected guideway in a treatment chamber. The end closure system includes a number of vertically aligned panels, each having opposite ends slidably engaged in vertically disposed guides. Connecting devices are provided on each panel for raising or lowering a preselected panel and any panel above a preselected panel to provide access to the preselected guideway or guideways or to seal the guideway or guideways. Lifting devices are provided for engaging the connecting devices on the preselected panel to raise and lower the preselected panel and any panel above a preselected panel to provide access to the preselected guideway or guideways or to seal the guideway or guideways. Lifting devices are provided for engaging the connecting devices on the preselected panel to raise and lower the preselected panel and any panels above the preselected panel.

Description

Heat treatment chamber and termination therefor

The invention relates generally to treatment chambers, and more particularly, to heat treatment chambers a kiln or drying oven for curing concrete blocks. In particular, the invention relates to an end lock construction for a kiln or drying oven with a variety of vertical and horizontal Compartments (tunnels) for receiving concrete blocks for the hardening of the same.

Certain kilns or drying ovens for cutting out concrete blocks essentially have two perpendicular side walls and a roof structure, of which the blocks are in the process of curing are enclosed. Several elongated, parallel lu the side walls running compartments are used for receiving and Support of the "green" or raw (concrete) blocks during hardening. The compartments are in a grid pattern arranged horizontally aligned layers and vertically aligned rows. The blocks are at one end of the compartments entered into this and discharged at the other end after hardening. To maintain a treatment atmosphere in the furnace there are input and discharge ends of the same with locking devices to prevent heat and / or moisture loss provided during the curing process.

809829/0047

In ovens of this type, various types of terminations have been used that allow the entry of the blocks the guides of the compartments and a removal of these should allow. Removable panels were also used for this purpose arranged over the entire end faces of the furnace. Other terminations consist of long, removable ones Panels or panels each covering one or more perpendicular rows of compartments. Both constructions are a comparatively large area of the furnace is open to the outside atmosphere when the blocks are placed in the furnace or are discharged from it, so that the furnace atmosphere is adversely affected by the efficiency and economy can escape from the oven during operation.

The invention is therefore based on the object of providing an end closure arrangement for a heat treatment chamber, such as a kiln or drying oven, through which the The degree of opening of the furnace can be limited to a minimum and is compatible with modern input and discharge processes is.

Another object of the invention is to provide an end closure assembly for a block oven with vertically displaceable door panels, in which a disruption of the input and ÄuBtrageinrichtung is to be prevented. In addition, the invention also aims to create a lifting device for opening predetermined panels of the end closures.

809929/0047

270057 / »

Preferred embodiments of the invention are explained in more detail below in conjunction with the accompanying drawings. Show it:

Figure 1 is a perspective view of a block furnace with high capacity, which has an end closure assembly with features according to the invention, Figure 2 is a perspective view of a single-row oven with an end closure according to the invention, Figure 3 is a perspective view of details the end closure plates which form part of the ovens according to Figures 1 and 2,

Figure 4 is a perspective view of a plate lifting device for the furnace according to Figure 1 and Figure 5 is a schematic side view of a series of End closure plates with the plate lifting device according to FIG. 1.

In general it can be said that the end closure arrangement according to the invention is suitable for selectively opening and closing at least one predetermined compartment of a treatment chamber. Such an end closure arrangement comprises a number of vertically aligned plates, the two sides of which each slidably engage in vertical guide rails. In the illustrated form of guide, each plate is preferably dimensioned so that it closes the surface of a guide track or a compartment. Connection means are provided on each plate,

809829/0047

which involves lifting or lowering a selected plate together with the plate (s) above it allow access to one or more preselected compartments to enable or to lock this compartment or these compartments. Another feature of the invention relates to calibration to the creation of a lifting device attached to the connecting means engages a predetermined plate and this plate and about to raise and lower plates located above it able.

The treatment chamber 7 shown in Figure 2 has an end closure of substantially rectangular shape and an upper wall or a roof 9, opposing side walls 11 and 13 and a rear wall 15. The chamber 7 is provided with a base 17 on which the lower ends of the walls 11, 13 and 15 rest. In the illustrated embodiment, compartments 22 are spaced apart in layers (transverse rows) lying one above the other for receiving and supporting pallets 21 for concrete blocks 23 or the like. erected. The compartments 22 each have two guide rails 19, which are held on two front guide posts 25 at the input end 33 of the chamber 7 and on two rear guide posts shown in rivets.The guide rails 19 are arranged in pairs parallel to one another at a distance so that they hold the pallets 21 or the like · are able to record.

809829/0047

- / - 27Ü057Ö

According to Figure 2, at the input end of the chamber 7 is a general End closure arrangement designated by 29 is provided, which in the illustrated embodiment consists of several perpendicular to one another aligned plates 31, which are overall dimensioned so that they the input end 33 of the chamber 7 to be able to close. The plates 31 are perpendicular guides or rails that are spaced apart from one another 35 guided next to the guide post 25 vertically displaceable. In the embodiment shown, the plates 31 are in essentially rectangular and arranged in such a way that they close one end of a compartment 22 in each case. The opposite Pages 37 of each plate 31 are guided in the vertical guide B rails 35 so that they can be moved vertically. For the production a seal between the plates 31, their cooperating edges interlock. In the illustrated Namely, the upper edge 39 is each clock shape Plate V-shaped, and according to Figure 3 in a Y-shaped groove 41 in the lower edge of the adjoining upper Plate is able to intervene. The construction described provides a seal through which the outlet ▼ on gases or moisture is largely reduced.

So that the individual plates 31 to open a certain faohts 22 can be lifted, each plate 31 is on their outer surface 45 is provided with a connecting means 42, with the help of which the plate can be pulled up either by hand or by mechanical means. The presented

809829/0047

ΊΟ

provided connection means 42 comprise hook-shaped tabs 43, according to Figure 3, for example by means of screws 51 or the like. at the Front 45 of the plate 31 concerned are attached. The tabs 43 each consist of a downward opening Hook part 47 and a web part 49 which is provided with a bore for receiving a screw bolt 51.

When a predetermined plate is pulled up, it locks the end of the compartment immediately above the compartment that was previously closed by that particular plate. To prevent a sliding out of the top plate from the guide rails 35 when pulling up one of the plates the guide rails 36 extend so far over the ceiling 9 the treatment camera 7 addition that they are the top plate (e.g. the top plate 31 according to Figure 2) are able to accommodate. In operation after the introduction of the to be treated Guts in a compartment (tunnel) the predetermined plate released so that she is together with everyone about her Plates return to their closed position under their own weight. This process can be repeated until the treatment chamber is filled. When the treatment is finished, the panels can be pulled up again to carry out the goods from the input end or subjects.

While in the illustrated embodiment plates are provided such dimensions that they each only the end cover a compartment, plates can also be used,

809829/0047

AA

that can lock more than one compartment.

In Figures 1, 3 and 4, the application of the terminations and a lifting device with features according to the invention is shown on a commercially available concrete block drying oven . While the invention is applicable to various types of such block drying ovens , it is illustrated in the drawings as applied to an oven of the type disclosed in U.S. Patent 3,492,704. For a better understanding, the general structure of the furnace according to this patent is explained below; for more detailed reference, reference is made to said US Pat.

The furnace 53 has a generally rectangular structure with a top or a roof 55 and opposing side walls 57 and 59, which with their lower ends a base 61 rest. A grid pattern of workpiece guides or compartments 63 runs from one end of the Oven 53 to the other. The blocks 65 located on pallets 67 are inserted at the input end 69 (i.e. at the front end according to FIG 2) and discharged from the furnace at the discharge end 71 (i.e. the rear end according to FIG. 2).

In operation of the furnace 53 "green" or raw, i.e. still uncured blocks 65 from a block making machine 73 is transferred to an infeed conveyor 75 which is connected to an input conveyor 77. The latter is based on the

809829/0047

Al

US Pat. No. 3,492,704 by means of a chain or cable arrangement which can be actuated by a hydraulic cylinder is raised or lowered to a predetermined height. To adjust the height of the feed conveyor 75 is the The discharge end is pivotably connected to the input conveyor 77.

Arranged on the input conveyor 77 is a block pusher device 79 which can be displaced along it and which is attached to the input end a selected subject can be moved.

The ingots 65 are brought onto a pallet 67 by the input conveyor 77 in correspondence with a selected bin. The pusher device 79 is then actuated so that it pushes the pallet 67 and the blocks 65 carried by it into the relevant compartment. The pallets are pushed into the relevant compartment 63 until it is filled over its entire length. This process is then continuously repeated on other compartments until the entire oven 53 is fully loaded.

After completion of the curing the Blockechubeinrichtung becomes the input end 69 of a voted vorbe compartment 63 brought again 79, while the provided at the discharge end 71 of furnace 53 outward conveyor 81 is aligned at the same time at the other end of the same multiple 63rd When a pallet 67 loaded with ingots 65 is pushed into the input end 69 of the compartment 63, the

809829/0047

-y- 27U057Ö

Impact effect of the pallets loaded with blocks and aligned one behind the other in the compartment, one loaded with cured blocks Pallet pushed out onto the discharge conveyor. The raw blocks are pushed into the relevant compartment, while the cured blocks are pushed out of the compartment onto the discharge conveyor until the compartment is marked with "green" or raw blocks is filled. The cured blocks are then removed and conveyed to a storage area. Of the Input conveyor 77 and the block pusher 79 together with the discharge conveyor 81 are then on the opposite Arranged ends of another compartment, and the discharge process is repeated until the cured blocks auo the furnace 53 have been discharged and the relevant compartment is filled with ingots.

Since the input and output ends of the furnace are disclosed in US Pat. No. 3,492 704 are open during loading, heat and moisture go out during the loading and unloading processes the furnace). In order to reduce this loss of heat and moisture as much as possible, according to FIG an end closure assembly 83 at the input end 69 and at the output end 71 of the oven 53 is provided * The end closure arrangement 83 shown is with modern block loading and discharge systems compatible, and it enables the continuous operation of the furnace 53 by reducing its internal surface, the is exposed to the ambient atmosphere during loading and unloading.

809829/0047

- y6 - 2 / UÖ576

MLe mentioned, the illustrated end closure ducts 83 are arranged at the input end 69 and at the output end 71 of the furnace3 53. Each of these arrangements 83 consists of a number of plates 31 which are aligned vertically or one above the other, each of which is aligned with one of the compartments 63 and is slidably guided in vertical guide rails. Lifting devices 87 for lifting and lowering a predetermined plate 31 in connection with plates located approximately above it are mounted on the input conveyor 77 and on the output conveyor 81.

The illustrated end closure assembly 83 comprises a number of rows 89 of vertically aligned plates 31, wherein the rows are arranged side by side and define horizontally extending layers or transverse rows 88. The different Rows 89 are dimensioned overall so that they close the input end 69 of the oven 53. A not shown, End closure arrangement corresponding to arrangement 83 serves to close the discharge end 71 of the furnace 53. As mentioned, the plates 31 are guided displaceably at a distance from one another, perpendicular guide rails 85, which are arranged next to the compartment support post 91. In the embodiment shown, the rails have 85 have an H-shaped cross section, and they are used to slide Receipt of the (lateral) ends of the abutting rows 89 of panels 31

809029/0047

AS

The plates 31 of the end closure assembly 03 described have the same construction as the plates 31 described in connection with the treatment chamber 7. The two side edges 37 of each plate 31 are guided displaceably in the vertical rails 85. To produce a seal between the panels 31, the lower edge 41 of each panel 31 is provided with a V-shaped hat; in which the upper edge 39 engages the adjacent plate in the manner described in connection with Figure 3. manner. With the arrangement described, a seal from is guaranteed, with which the leakage of gases or moisture is reduced to a minimum.

As mentioned, each plate 31 is provided on its outer surface 45 with a connection means 42 of the type described to to allow a predetermined plate to be raised and lowered along with any plates located above it.

The plates 31 of the end closure assemblies 83 provided at the input end 69 and output end 71 of the oven be opened by means of the lifting devices 87, which are mounted on the input conveyor 77 and on the discharge conveyor 81 and on can be moved along these conveyors.

In the embodiment shown, the lifting device

809829/0047

87 essentially on a frame 95, which is a hydraulic cylinder unit 97 with a piston rod 99, which in an engaging hook 101 for engaging the connecting means 42 a plate leaks. A control curve 103 is used to automatically connect the hook 101 to a panel connecting means 42 to bring into engagement in order to be able to lift a predetermined plate when the hydraulic cylinder 105 is actuated.

The supporting frame 95 of the plate lifting device 87 at the input end 69 is mounted on an upper section of the frame 106 of the block pusher device 79, which in turn is mounted on the input conveyor 77 so as to be displaceable along the latter. The frame 106 of the block pusher device (FIGS. 1 and 4) carries the block pusher device 79; it has a substantially box-shaped configuration of suitable support members, such as upper supports 107, 109, 111 and 113 »lower supports 115, 117, 119 and 121 and vertical supports 123, 125, 127 and 129 substantially triangular shape with two approximately perpendicular triangular struts 131 and 133 which are mounted practically in the same plane on the upper support 113 of the frame 106, ie on the support member located near the input end 69 of the oven 53. A third Dreieoksstrebe 135 is attached practically perpendicular to the struts 13 and 133 according to FIG. 4 and connected to the latter and the upper ones 109 and 113. A web 137 is at its one end 139 according to Figure 4 with the upper ends of the struts

809829/0047

Al

133 and 135 connected. The other end of the web 137 is provided with a bore, not shown, in which the Hydraulic cylinder unit 97 is pivotably mounted.

The hydraulic cylinder unit 97 has a holder 139 with a shackle which encompasses the bore in the web 137 on both sides and is connected to it via a bolt 141 is. The holder carries the hydraulic cylinder 105 with its piston rod 99, which has a piston rod (not shown) The piston guided in the cylinder 105 is connected in the usual way.

The cylinder 105 and piston rod 99 are dimensioned so that they are able to raise the plates 31 so far that the blocks 65 can be inserted into the ends of the compartments 63. Matching hydraulic lines 143 and 145 are dowels connected to a hydraulic fluid source (not shown). The end 147 of the piston rod 99 carries the engaging hook 101 for gripping the plate connecting means 42 on the end face of the plate 31 concerned.

The engaging hook 101 shown consists of a tab 148 having an upwardly-opening end 150 which is sized so that it is introduced into the on the end faces 45 of the plates 31, downwardly opening, hook-shaped Laachen can engage 43rd

As mentioned, the curve 103 is able to lift the hook 101

809829/0047

/ I?

to move a plate 31 with the connecting means 42 in engagement. The curve 103 has a control curve element 143 on, the one with the piston rod 99 via an L-shaped Bracket is braced, which has two legs 151 and 153 arranged at right angles to one another. The leg 151 is rigidly attached to the piston rod 99 at a right angle to this, while the other leg 153 from the hook 101 goes up. The control cam element attached to the leg 153 149 has a flat curved surface 155 along its lower section and a ramp surface at its upper end or ramp 157.

In the illustrated embodiment, there is a curve feeler roller 159 attached to the lower part of the triangular struts 131 and 133, the dimensions and the position of the curved surface 155 are chosen so that the roller 159 runs or rests on the surface of the leg 153 when the piston rod 99 according to FIG. 5 is in its lowest position. The leg 153 and / or the curved surfaces 155 and 157 are in contact with the cam roller by a spring 161 159 held, with one end of this spring on a sleeve mounted on the hydraulic cylinder 105 163 and at the other end to the brackets 165 mounted on the triangular struts 131 and 133. if the piston rod 99 is first retracted, the roller 159 runs on the ramp 157 until it reaches the curved surface 155 reached and the hook 101 in engagement with the terminal

809829/0047

- ■ / - 2700 & 76

means 42 at the end face 45 dor plate 31 brings. The piston rod 99 is then retracted until the plate 31 is pulled up, exposing an opening at the input end of the relevant compartment. After loading the compartment, the piston rod 99 is extended again, the roller 159 running on the cam surface 155 until the lower edge 167 of the relevant plate 31 comes into contact with the upper edge of the next lower plate. When the hook 101 is extended further down, the roller 159 runs again over the ramp or ramp 157 at the upper end of the elongate cam element 149, the hook 101 being pulled out from under the plate connecting means 42 by the spring 161. For lifting and lowering the plates 31 of the end closure arrangement at the discharge end 71 of the furnace 53, a discharge lifting device with the same structure as the device 87 is mounted on a frame which in turn is mounted on the discharge conveyor 81 and can be moved relative to it.

In a special embodiment, a cross (strut) element 167 can be fastened with its two ends near the upper ends of the guide rails 85 (see FIG. 5). One end of a compression spring 169 is attached to the underside 171 of the transverse element 167, while its other end engages the upper side of the uppermost plate 31 and urges the plates 31, which are arranged vertically above one another, into the closed position after the lifting device 87 has been released from the connecting means 42.

_{809829/0 (u7}

During the loading process, the input lifting device 87 is arranged on a predetermined plate 31, whereupon the hydraulic cylinder 105 is actuated and the hook 101 carried by the piston rod 99 is thereby pulled up. During this upward movement of the hook 101 attached to the control cam 103, the cylinder 105 is displaced towards the plate 31, so that the hook 101 engages under the relevant plate connecting means 42. During the further upward movement of the hook 101 this comes into engagement with the plate connecting means 42, so that the plate in question is pulled up together with all the plates above it. Thereafter, the pusher block 79 is activated _t so that it pushes in the selected tray 63 to rest on the pallet 67 block 65th Further block pallets 67 are then brought into alignment with the input end of the relevant compartment 63 and pushed into this compartment until the compartment is filled. Thereafter, the cylinder 105 is operated again to lower the hook carried by the piston rod 99. During the downward movement of the hook 101, the predetermined plate 31 moves downward, and when the roller 159 runs on the ramp or ramp 157 on the cam element 149, the spring 161 urges the cylinder 105 in the direction of the frame 95 of the lifting device, so that the Hook 101 is moved out of its position under the connecting means 42 on the face of the plate in question . The lifting device * 87 is then placed on another plate 31, and the process is repeated, bi

809829/0047

the oven is completely full.

After the hardening or drying process has been completed, the block pusher device 79 carrying the lifting device 87 becomes again at the input end 69 of a predetermined oven compartment 63 aligned. The discharge conveyor carrying the discharge lifting device is placed at the same time at the other end of the same compartment. Then the hydraulic cylinders operated for the discharge and input lifts to move the predetermined plates at the discharge end 71 and input end 69 of the furnace 53 to be pulled up. While a pallet 67 carrying ingots 65 into the input end 69 of the filled Is pushed into the oven compartment, a pallet loaded with cured blocks is pushed by the Pallets loaded with blocks in the relevant compartment are pushed out onto the discharge conveyor 81. The raw blocks are in the process pushed into the selected compartment, while the cured blocks at the same time from the relevant compartment on the contract conveyor can be pushed out until this compartment is filled with "green" or raw blocks. The hardened Blocks are transferred to a storage area (not shown) after they have been discharged. The input conveyor with the input hub device and the discharge conveyor with the discharge lifting device can be placed at opposite ends of another compartment, whereupon the process repeats until all cured blocks have been discharged from the furnace and the furnace is again filled with raw blocks

809829/0047

Although only a currently preferred embodiment above The invention is illustrated and explained, the invention is in no way limited to the above disclosure but rather all changes and changes within the scope and spirit of the invention Include variations.

809829/0047

. -S3 ·.

Blank page

Claims (8)

Claims 1 · Heat treatment furnace with a multitude of verticals one above the other arranged compartments each with an input end, characterized by an end closure for the input ends of the chamber in the form of a number of perpendicularly aligned plates which are opposite one another Have ends with vertical edges and horizontal upper and lower edges, each on a horizontal Edge edge of an adjacent plate rest, with vertically arranged guide means for the plates, which the Slidably hold the ends or side edges of the panels and hold the panels in a vertical alignment with one another, and with connection means provided on each plate for establishing a connection fiiv lifting of any, selected plate and about its located plates, so that the material to be treated can be introduced into the input end of the compartments is. 2. Apparatus according to claim 1, characterized in that the abutting edge edges of the perpendicular to one another aligned plates engage each other and thereby create a seal through which an escape of the atmosphere from the treatment chamber or the furnace is prevented. 3. Device for storing pallets with uncured Concrete blocks during the hardening or drying of the oil, 809829/0047 ORIGINAL INSPECTED consisting of a kiln or drying oven with a front input end and a rear discharge end, several provided in the oven compartments, each extending from the front to the rear end of the oven, the are each dimensioned so that they can accommodate a number of pallets to be stored, and in a pattern or scheme are arranged in which the compartments form horizontal layers or transverse rows and vertical rows, so that the Ends of the compartments at the input end and at the discharge end are arranged in a grid-like or grate-like scheme, an input device with means for inserting pallets with blocks in any selected compartment, and one on Discharge of the furnace arranged discharge device with means for receiving the block pallets from any selected subject, characterized by an end seal for the input and the output end of the furnace with each a number of vertically aligned plates, vertically arranged guide rails supported at the end of the furnace for the panels that slidably accommodate the ends or side edges of the panels and the panels in a perpendicular manner Maintain alignment with respect to the furnace end, by a lifting device, by connecting means provided on each plate for establishing a connection with the lifting device, by means of aligning the lifting device with a predetermined one Plate and means for actuating the lifting device for connecting the same to the connecting means on the plate concerned and for lifting or pulling it up 8 0 9 H 2 Π / 0 G 4 7 ORIGINAL INSPECTED this plate and about this located plates, so that the blocks can be inserted into the input end of the compartments and can be removed from the discharge end of the compartments. 4. Device according to claim 3, characterized in that the abutting marginal edges of the vertically aligned Plates engage one another to form a seal, whereby a gas leakage from the furnace can be prevented is. 5. Apparatus according to claim 3, characterized in that the lifting device has a frame for movably holding the lifting device on the input device or on the discharge device, so that the lifting device can be aligned with any selected subject, that a hydraulic cylinder is pivotable at the end of the frame is attached, which has a cylinder with a piston guided therein and a piston rod connected to the latter that the hydraulic cylinder is able to raise and lower any predetermined plate at least so far that one end of one of the compartments can be opened and closed that at the other end of the hydraulic cylinder, an engaging means is provided which is able to interact with each of the connecting means attached to the individual plates, and that between the frame and the hydraulic cylinder a control cam device for moving the engaging means to the connecting means when the hydraulic cylinder is initially 809829/0047 is operated to pull up one of the plates, and is arranged to separate the engaging means from the connecting means when the hydraulic cylinder has lowered the plate in question into its closed position . 809829/0047