down draught kiln

Abstract

The utility model discloses a reverse flame kiln, including reverse flame kiln wall and install the reverse flame kiln roof at the top of reverse flame kiln wall, still include the hoisting mechanism of setting in the air above reverse flame kiln, the top of reverse flame kiln wall is provided with the chute, and the bottom of reverse flame kiln roof and chute sliding fit, hoisting mechanism is connected with reverse flame kiln roof, and reverse flame kiln roof can slide along the extension direction of chute under the drive of hoisting mechanism, the utility model discloses make the cooperation and relative sliding between reverse flame kiln roof and reverse flame kiln wall, directly adopt reverse flame kiln roof as the kiln door of reverse flame kiln, and configure hoisting mechanism to drive reverse flame kiln roof, directly through hoisting mechanism drive reverse flame kiln roof to carry out translation in the process of opening and closing kiln door can realize the opening and closing of kiln door, the utility model discloses can effectively reduce the opening and closing difficulty of top opening type reverse flame kiln, and still can realize the hoisting of prefabricated part through hoisting mechanism to effectively improve the efficiency of drying prefabricated part through reverse flame kiln.

Description

Technical Field

[0001] This utility model relates to the field of kiln technology, and in particular to a downdraft kiln. Background Technology

[0002] During the drying process of precast components, a downdraft kiln is required to dry the precast components. After drying, the kiln door is opened to remove the precast components. Conventional downdraft kilns generally use a horizontal loading method. The kiln door of this type of downdraft kiln is a hinged door, which is installed at the front of the kiln and is opened by sliding the door horizontally. However, due to product upgrades, some manufacturers, in order to save costs, directly use abandoned rooms in old factory buildings as the main body of the downdraft kiln. Due to the limitation of horizontal space, it is not convenient to use a hinged kiln door for this type of downdraft kiln. Instead, an openable kiln roof is set on the top of the kiln as the kiln door. Although this top-opening downdraft kiln can save space, the opening and closing of the kiln door is more troublesome, which will significantly affect production efficiency. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a downdraft kiln that facilitates the opening and closing of the kiln top.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a down-draft kiln, including a down-draft kiln wall and a down-draft kiln roof installed on top of the down-draft kiln wall, and also including a hoisting mechanism suspended above the down-draft kiln; the top of the down-draft kiln wall is provided with a sliding groove, and the bottom of the down-draft kiln roof slides in cooperation with the sliding groove; the hoisting mechanism is connected to the down-draft kiln roof, and the down-draft kiln roof can slide along the extension direction of the sliding groove under the drive of the hoisting mechanism.

[0005] As an improvement to the above solution, the bottom of the kiln roof of the downdraft kiln is slidably fitted with a chute via rollers.

[0006] As an improvement to the above solution: the bottom of the kiln roof of the downdraft kiln is fixed with an outwardly extending connecting plate, which extends outward to above the slide groove, and the rollers are detachably connected to the connecting plate.

[0007] As an improvement to the above solution: the connecting plate is an L-shaped connecting plate with two bends. One bend of the connecting plate is fixedly connected to the top of the downdraft kiln, and the other bend of the connecting plate is detachably connected to an inverted U-shaped bracket by bolts. The roller is set inside the inverted U-shaped bracket and is rotatably connected to the inverted U-shaped bracket by a rotating shaft.

[0008] As an improvement to the above solution: a limiting annular groove is provided on the outer circumferential surface of the roller, and a limiting protrusion extending in the same direction as the groove is fixedly provided in the groove. The limiting protrusion is embedded in the limiting annular groove of the roller to form a clearance fit.

[0009] As an improvement to the above solution, a sealing component is also included. The sealing component includes a sealing block, which is fixedly connected to the wall of the downdraft kiln and extends in a direction parallel to the slide groove. The sealing block is provided with at least two spaced sealing protrusions. The inner side of the top of the downdraft kiln is provided with sealing grooves that correspond one-to-one with the sealing protrusions and fit together. The sealing protrusions and sealing grooves are fitted with a gap.

[0010] As an improvement to the above solution: a fixing rod is fixedly installed on the wall of the downdraft kiln, and a fixing hole adapted to the fixing rod is provided on the sealing block, into which the fixing rod is inserted.

[0011] As an improvement to the above solution: the hoisting mechanism includes a column, a connecting beam, a crane longitudinal beam, and a crane; the column is vertically fixed around the perimeter of the downdraft kiln, the connecting beam and the crane longitudinal beam are suspended above the downdraft kiln through the column, the crane longitudinal beam is set parallel to the chute, and the crane is set on the crane longitudinal beam; the crane is connected to the top of the downdraft kiln.

[0012] The beneficial effects of this utility model are as follows: By setting a sliding groove on the top of the down-draft kiln wall and installing rollers that cooperate with the sliding groove on the top of the down-draft kiln, a relatively sliding cooperation relationship is formed between the top of the down-draft kiln and the kiln wall. The top of the down-draft kiln is directly used as the kiln door, and a hoisting mechanism is configured to drive the top of the down-draft kiln. During the opening and closing of the kiln door, the kiln door can be opened and closed by directly moving the top of the down-draft kiln through the hoisting mechanism. This utility model can effectively reduce the difficulty of opening and closing the top-opening down-draft kiln, and can also realize the hoisting of precast parts through the hoisting mechanism, thereby effectively improving the efficiency of drying precast parts through the down-draft kiln. Attached Figure Description

[0013] Figure 1 This is a front view of the structure of this utility model;

[0014] Figure 2 This is a top view of the structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the connection between the kiln roof and the kiln wall of a downdraft kiln.

[0016] The markings in the diagram are as follows: 100-downdraft kiln wall, 110-slide groove, 200-downdraft kiln top, 210-roller, 211-limiting ring groove, 220-connecting plate, 230-bolt, 240-inverted U-shaped bracket, 250-rotating shaft, 300-hoisting mechanism, 310-column, 320-connecting crossbeam, 330-crane longitudinal beam, 340-crane, 410-sealing block, 420-sealing protrusion, 430-sealing groove, 440-fixing rod, 450-fixing hole. Detailed Implementation

[0017] To facilitate understanding of this utility model, the following description, in conjunction with the accompanying drawings, will provide further details.

[0018] In the description of this utility model, it should be noted that the terms "front", "rear", "left", "right", "up", "down", "inner", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of description and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] like Figure 1 and Figure 2 As shown, the downdraft kiln disclosed in this utility model includes a downdraft kiln body composed of a downdraft kiln wall 100 and a downdraft kiln roof 200, as well as a hoisting mechanism 300. The downdraft kiln wall 100 is vertically arranged and encloses to form a combustion chamber, and the downdraft kiln roof 200 is installed on top of the downdraft kiln wall 100. In this utility model, the downdraft kiln roof 200 serves as the kiln door of the downdraft kiln. The downdraft kiln roof 200 and the downdraft kiln wall 100 are in a relatively translatable cooperative relationship. The hoisting mechanism 300, which is suspended above the downdraft kiln, is connected to the downdraft kiln roof 200. The hoisting mechanism 300 can be used to drive the downdraft kiln roof 200 to translate, thereby opening or closing the downdraft kiln, forming a top-opening downdraft kiln. Precast components are loaded into the kiln through the top space of the downdraft kiln.

[0020] Specifically, such as Figure 1 and Figure 2 As shown, this utility model achieves relative movement between the kiln roof 200 and the kiln wall 100 of the downdraft kiln by setting a chute 110 and rollers 210. The chute 110 is set at the top of the kiln wall 100, and the rollers 210 are installed at the bottom of the kiln roof 200. The rollers 210 extend into the chute 110. By rolling along the chute 110, the kiln roof 200 can be moved relative to the kiln wall 100, thereby realizing the opening and closing of the entire downdraft kiln. The movement of the kiln roof 200 is driven by the hoisting mechanism 300.

[0021] Furthermore, the hoisting mechanism 300 in this utility model is as follows: Figure 1 and Figure 2As shown, the system consists of a column 310, a connecting beam 320, a crane longitudinal beam 330, and a crane 340. The column 310 is vertically fixed around the perimeter of the downdraft kiln. The connecting beam 320 and the crane longitudinal beam 330 are suspended above the downdraft kiln via the column 310. The crane longitudinal beam 330 is set parallel to the slide rail 110, and the crane 340 is mounted on the crane longitudinal beam 330. The crane 340 is connected to the kiln roof 200 of the downdraft kiln. After connecting the crane 340 to the kiln roof 200, the kiln roof 200 slides along the slide rail 110 by moving the crane 340 along the crane longitudinal beam 330. In addition, the hoisting mechanism 300 can also hoist precast components for drying. Before drying, the precast components are hoisted into the downdraft kiln by the hoisting mechanism 300, and after drying, the precast components are hoisted out of the downdraft kiln by the hoisting mechanism 300.

[0022] Specifically, such as Figure 3 As shown, in this utility model, a connecting plate 220 is fixedly connected to the bottom of the kiln roof 200 of the downdraft kiln. The connecting plate 220 extends outward to above the slide groove 110 and is used to install the connecting roller 210. The connecting plate 220 is an L-shaped connecting plate with two bends. One bend of the connecting plate 220 is fixedly connected to the kiln roof 200, and the other bend of the connecting plate 220 is detachably connected to an inverted U-shaped bracket 240 by bolts 230. The roller 210 is set inside the inverted U-shaped bracket 240 and is rotatably connected to the inverted U-shaped bracket 240 by a rotating shaft 250. The inverted U-shaped bracket 240 protects the roller 210 and also serves as a fixing component for the rotating shaft 250, facilitating the installation of the roller 210. The connection between the connecting plate 220 and the inverted U-shaped bracket 240 by bolts 230 facilitates the later maintenance or replacement of the roller 210.

[0023] Furthermore, to prevent the roller 210 from rolling skewed in the groove 110, such as Figure 3 As shown, this invention improves the structure of the roller 210 by providing a limiting annular groove 211 on the outer circumferential surface of the roller 210. Simultaneously, a limiting protrusion extending in the same direction as the sliding groove 110 is fixedly installed within the sliding groove 110. The limiting protrusion is embedded in the limiting annular groove 211 of the roller 210 to form a clearance fit. The limiting protrusion guides and limits the roller 210, preventing it from deviating from its intended path.

[0024] Since this invention achieves the opening and closing of the kiln door through the translation of the kiln roof 200 relative to the kiln wall 100, a certain gap will inevitably exist between the kiln roof 200 and the kiln wall 100 to ensure smooth relative movement. After the kiln door is closed, this gap may reduce the sealing effect, allowing heat to escape. To improve the sealing performance of the downdraft kiln, this invention adds a sealing component between the kiln roof 200 and the kiln wall 100; such as... Figure 3 As shown, the main body of the sealing assembly is a sealing block 410. The sealing block 410 adopts a long strip structure extending parallel to the extension direction of the slide groove 110. The sealing block 410 is fixedly connected to the kiln wall 100 of the down-draft kiln. A sealing protrusion 420 is fixedly provided on the sealing block 410. At the same time, a sealing groove 430 corresponding to the sealing protrusion 420 is provided on the inner side of the kiln top 200 of the down-draft kiln. The number of sealing protrusions 420 and sealing grooves 430 is set to at least two. The sealing protrusion 420 is embedded in the corresponding sealing groove 430. The cooperation of the sealing protrusion 420 and the sealing groove 430 achieves at least two layers of sealing effect. In addition, the width of the sealing protrusion 420 should be slightly smaller than the width of the sealing groove 430 so that a clearance fit is formed between the sealing protrusion 420 and the sealing groove 430. When the kiln top 200 of the downdraft kiln moves relative to the kiln wall 100, the sealing protrusion 420 and the sealing groove 430 can also move relative to each other, which can ensure that the relative movement between the kiln top 200 and the kiln wall 100 of the downdraft kiln can proceed smoothly.

[0025] Furthermore, such as Figure 3 As shown, the fixed connection between the sealing block 410 and the kiln wall 100 of the downdraft kiln is achieved by the cooperation of the fixing rod 440 and the fixing hole 450. The fixing rod 440 is vertically fixed to the kiln wall 100 of the downdraft kiln. The sealing block 410 is provided with a fixing hole 450 for the fixing rod 440 to be inserted. The fixing rod 440 is inserted into the fixing hole 450 to achieve the fixed connection between the sealing block 410 and the kiln wall 100 of the downdraft kiln, which facilitates assembly.

Claims

1. A downdraft kiln, comprising a downdraft kiln wall (100) and a downdraft kiln roof (200) installed on top of the downdraft kiln wall (100), characterized in that: It also includes a hoisting mechanism (300) suspended above the downdraft kiln; the top of the downdraft kiln wall (100) is provided with a sliding groove (110), and the bottom of the downdraft kiln top (200) slides in cooperation with the sliding groove (110); the hoisting mechanism (300) is connected to the downdraft kiln top (200), and the downdraft kiln top (200) can slide along the extension direction of the sliding groove (110) under the drive of the hoisting mechanism (300).

2. The downdraft kiln as described in claim 1, characterized in that: The bottom of the kiln top (200) of the downdraft kiln is slidably engaged with the chute (110) via rollers (210).

3. The downdraft kiln as described in claim 2, characterized in that: The bottom of the kiln top (200) of the downdraft kiln is fixed with an outwardly extending connecting plate (220), which extends outward to above the slide groove (110), and the roller (210) is detachably connected to the connecting plate (220).

4. The downdraft kiln as described in claim 3, characterized in that: The connecting plate (220) is an L-shaped connecting plate with two bends. One bend of the connecting plate (220) is fixedly connected to the top of the downdraft kiln (200). The other bend of the connecting plate (220) is detachably connected to an inverted U-shaped bracket (240) by bolts (230). A roller (210) is set inside the inverted U-shaped bracket (240) and is rotatably connected to the inverted U-shaped bracket (240) by a rotating shaft (250).

5. The downdraft kiln as described in claim 4, characterized in that: The outer circumferential surface of the roller (210) is provided with a limiting ring groove (211), and a limiting protrusion extending in the same direction as the sliding groove (110) is fixedly provided in the sliding groove (110). The limiting protrusion is embedded in the limiting ring groove (211) of the roller (210) to form a clearance fit.

6. The downdraft kiln as described in claim 1, characterized in that: It also includes a sealing assembly, which includes a sealing block (410), the sealing block (410) is fixedly connected to the kiln wall (100) of the downdraft kiln and extends in a direction parallel to the slide groove (110), the sealing block (410) is provided with at least two spaced sealing protrusions (420), and the inner side of the kiln top (200) of the downdraft kiln is provided with sealing grooves (430) that correspond one-to-one with the sealing protrusions (420) and fit together, the sealing protrusions (420) and the sealing grooves (430) are fitted with a clearance.

7. The downdraft kiln as described in claim 6, characterized in that: A fixing rod (440) is fixedly installed on the kiln wall (100) of the downdraft kiln, and a fixing hole (450) adapted to the fixing rod (440) is provided on the sealing block (410), and the fixing rod (440) is inserted into the fixing hole (450).

8. The downdraft kiln as described in claim 1, characterized in that: The hoisting mechanism (300) includes a column (310), a connecting beam (320), a crane longitudinal beam (330), and a crane (340); the column (310) is vertically fixed around the perimeter of the downdraft kiln, the connecting beam (320) and the crane longitudinal beam (330) are suspended above the downdraft kiln through the column (310), the crane longitudinal beam (330) is set parallel to the chute (110), and the crane (340) is set on the crane longitudinal beam (330); the crane (340) is connected to the kiln top (200) of the downdraft kiln.

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