Shaft hole plugging device for rotational molding heating furnace
By designing an automatic sealing device on the rotomold heating furnace, and automatically sealing the shaft hole with the semicircular cover plate on the shell, the problem of heat loss of the heating furnace is solved and the insulation performance of the heating furnace is improved.
Patent Information
- Application Number
- CN202422220691.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-11
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-09-11
AI Technical Summary
The shaft holes of existing rotomold heating furnaces cannot be automatically sealed, resulting in heat loss and affecting the temperature retention effect of the heating furnace.
A shaft hole sealing device including an open-closed shell is designed, with semicircular grooves and a cover plate at both ends of the shell. The cover plate automatically seals or opens the shaft hole through its own gravity to ensure that one shaft hole accommodates the rotation shaft when the shell is closed, and the other shaft hole is blocked by the cover plate.
It effectively avoids heat loss of the heating furnace, improves the insulation ability of the shell, and ensures the temperature uniformity and efficiency of the heating furnace.
Smart Images
Figure CN223290158U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of rotational molding heating furnaces, in particular to an axis hole blocking device for rotational molding heating furnaces. Background Art
[0002] Roto-molding heating equipment is usually used to manufacture fuel tanks. It mainly melts the powdered material in the mold by baking, allowing it to melt into liquid and evenly spread throughout the mold. After it cools, a fuel tank of a specific shape is obtained. Roto-molding heating equipment mainly includes a heating furnace and a walking trolley that carries the mold. A heating furnace is usually equipped with two walking trolleys, which are distributed at the left and right ends of the heating furnace. When the mold of one walking trolley is cooling, the other walking trolley can use the heating furnace to bake. The two walking trolleys use one heating furnace alternately, which saves the number of heating furnaces and also saves floor space.
[0003] A rotating shaft is installed at one end of the traveling trolley, and the mold is fixed on the end of the rotating shaft. The rotating shaft drives the mold to rotate by rotation. When the mold is located in the heating furnace, a section of the rotating shaft is located in the heating furnace, and the remaining part of the rotating shaft is located outside the heating furnace together with the traveling trolley. During baking, the two half shells on the outside of the heating furnace move towards each other until they are closed to ensure the baking temperature, and semicircular grooves must be left on both half shells. When the two half shells are closed, the two semicircular grooves can be combined into an axial hole to accommodate the rotating shaft. Otherwise, the two half shells cannot be closed due to obstruction of the rotating shaft.
[0004] Since there are trolleys on both ends of the heating furnace, shaft holes must be left on both ends to accommodate the rotating shaft on the corresponding side. However, since the heating furnace can only bake the mold of one trolley at a time, when the two half shells are closed, there is no rotating shaft in the shaft hole on the other side of the heating furnace. The shaft hole here is in an unobstructed state, resulting in a considerable amount of heat in the heating furnace being lost from the shaft hole here, seriously affecting the temperature of the heating furnace.
[0005] Therefore, it is necessary to propose a shaft hole sealing device for a rotational molding heating furnace to achieve automatic sealing of the shaft hole, ensure the temperature of the heating furnace, and avoid heat loss. Utility Model Content
[0006] The purpose of the utility model is to solve the problem that the shaft hole of the existing rotational molding heating furnace cannot be automatically sealed, resulting in heat loss in the heating furnace. A shaft hole sealing device for a rotational molding heating furnace is now provided.
[0007] The technical solution of the utility model is:
[0008] A shaft hole sealing device for a rotational molding heating furnace includes an openable and closable shell, a pair of semicircular grooves are respectively provided on the end faces at both ends of the shell, the pair of semicircular grooves are spliced to form a shaft hole, and a pair of semicircular cover plates are respectively provided on the end faces at both ends of the shell for blocking the shaft hole. Each semicircular cover plate is rotatably connected to the shell and can rotate parallel to the end faces at both ends of the shell. The pair of semicircular cover plates can be rotated to the shaft hole on the same side as the pair of semicircular cover plates under the action of their own gravity, thereby sealing the shaft hole.
[0009] Furthermore, the opposite sides of each pair of semicircular cover plates are fixedly connected with support platforms, and the support platforms are in contact with the rotating shaft in the shaft hole.
[0010] Furthermore, the semicircular cover is located on the outside of the shell.
[0011] Furthermore, a movable groove for accommodating the semicircular cover plate is provided on the shell, and the semicircular cover plate rotates in the movable groove.
[0012] Furthermore, the number of movable slots corresponds to the number of semicircular cover plates.
[0013] The utility model discloses a shaft hole sealing device for a rotationally molded heating furnace, in which a pair of semicircular grooves are installed at the shaft holes at both ends of the shell. When the shaft hole on one side accommodates the rotating shaft, as the shell is closed, the pair of semicircular grooves are spliced to form the shaft hole, thereby wrapping the rotating shaft in the shaft hole, and the rotating shaft will not affect the closing of the shell, while the pair of semicircular cover plates there are hindered by the rotating shaft and will contact the side wall of the rotating shaft. The semicircular cover plates blocked by the rotating shaft cannot fall, so that the semicircular cover plates cannot seal the shaft hole; correspondingly, there is no rotating shaft in the shaft hole on the other side, and the pair of semicircular grooves there will fall and rotate to the shaft hole under the action of their own gravity, thereby sealing the shaft hole there. Compared with the traditional technology, the two shaft holes on the entire shell of the present technical solution, one accommodates the rotating shaft, and the other is blocked by a pair of semicircular cover plates, thereby improving the thermal insulation capacity of the shell and avoiding the loss of heat from the heating furnace. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a structural reference diagram of the first embodiment of the present utility model;
[0015] Figure 2 This is a reference diagram of the use state of the first embodiment of the present utility model;
[0016] Figure 3 This is a structural reference diagram of embodiment 2 of the present utility model.
[0017] Figure numerals: 1. shell; 2. semicircular groove; 3. shaft hole; 4. semicircular cover; 5. support platform; 6. movable slot; 7. rotating shaft. DETAILED DESCRIPTION
[0018] In order to make the technical means, technical features, purpose of the utility model and technical effects achieved by the utility model easier to understand, the utility model is further explained below with reference to specific illustrations.
[0019] Example 1:
[0020] like Figure 1 and Figure 2 As shown, this embodiment provides an axis hole blocking device for a rotational molding heating furnace, comprising an openable and closable shell 1, a pair of semicircular grooves 2 are respectively provided on the end faces at both ends of the shell 1, the pair of semicircular grooves 2 are spliced to form an axis hole 3, and a pair of semicircular cover plates 4 for blocking the axis hole 3 are respectively provided on the end faces at both ends of the shell 1, each semicircular cover plate 4 corresponds to a semicircular groove 2, each semicircular cover plate 4 is rotatably connected to the shell 1 by a pin shaft and can be rotated parallel to the end faces at both ends of the shell 1, and the pair of semicircular cover plates 4 can be rotated to the axis hole 3 on the same side as the pair of semicircular cover plates 4 under the action of their own gravity, thereby blocking the axis hole 3.
[0021] Preferably, support platforms 5 are welded on the opposite sides of each pair of semicircular cover plates 4, and the support platforms 5 are in contact with the rotating shaft 7 in the shaft hole 3. The support platforms 5 can increase the contact area with the side wall of the rotating shaft 7, thereby preventing the semicircular cover plates 4 from scratching the side wall of the rotating shaft 7.
[0022] Preferably, the semicircular cover plate 4 is located outside the housing 1 .
[0023] Preferably, the number of movable slots 6 corresponds to the number of semicircular cover plates 4 .
[0024] When in use, a pair of semicircular grooves 2 are installed at the shaft holes 3 at both ends of the shell 1. When the shaft hole 3 on one side accommodates the rotating shaft 7, as the shell 1 is closed, the pair of semicircular grooves 2 are spliced to form the shaft hole 3, thereby wrapping the rotating shaft 7 in the shaft hole 3, and the rotating shaft 7 will not affect the closing of the shell 1, and the pair of semicircular cover plates 4 there are hindered by the rotating shaft 7 and will contact the side wall of the rotating shaft 7. The semicircular cover plates 4 blocked by the rotating shaft 7 cannot fall, so that the semicircular cover plates 4 cannot block the shaft hole 3; correspondingly, there is no rotating shaft 7 in the shaft hole 3 on the other side, and the pair of semicircular grooves 2 there will fall and rotate to the shaft hole 3 under the action of their own gravity, thereby blocking the shaft hole 3 there. The two shaft holes 3 on the entire shell 1 of this technical solution, one accommodates the rotating shaft 7, and the other is blocked by a pair of semicircular cover plates 4, thereby improving the thermal insulation ability of the shell 1 and avoiding the loss of heat from the heating furnace.
[0025] Example 2
[0026] The similarities between this embodiment and the first embodiment are not described in detail. The difference between the present embodiment and the first embodiment is that Figure 3As shown, a movable groove 6 for accommodating the semicircular cover plate 4 is provided on the shell 1. The semicircular cover plate 4 rotates in the movable groove 6. The movable groove 6 is a semicircular groove with a circular shape at the rotating connection of the semicircular cover plate 4 and a radius of the diameter of the semicircular cover plate 4. The semicircular groove can increase the flatness of the end faces at both ends of the shell 1, preventing workers from touching the semicircular cover plate 4 during movement, thereby avoiding injuries to workers or damage to the semicircular cover plate 4.
[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. In other words, any equivalent changes and modifications made according to the scope of the patent application of the present invention should fall within the technical scope of the present invention.
Claims
1. A shaft hole plugging device for a rotational molding heating furnace, comprising an openable and closable housing (1), wherein a pair of semicircular grooves (2) are respectively provided on the end faces at both ends of the housing (1), and the pair of semicircular grooves (2) are spliced to form a shaft hole (3), characterized in that: The end faces at both ends of the shell (1) are each provided with a pair of semicircular cover plates (4) for shielding the shaft hole (3). Each semicircular cover plate (4) is rotatably connected to the shell (1) and can rotate parallel to the end faces at both ends of the shell (1). The pair of semicircular cover plates (4) can be rotated to the shaft hole (3) on the same side as the pair of semicircular cover plates (4) under the action of their own gravity, thereby blocking the shaft hole (3).
2. The shaft hole blocking device for a rotational molding heating furnace according to claim 1, characterized in that: The opposite sides of each pair of semicircular cover plates (4) are fixedly connected with support platforms (5), and the support platforms (5) are in contact with the rotating shaft (7) in the shaft hole (3).
3. The shaft hole blocking device for a rotational molding heating furnace according to claim 1, characterized in that: The semicircular cover plate (4) is located outside the shell (1).
4. The shaft hole blocking device for a rotational molding heating furnace according to claim 1, characterized in that: The housing (1) is provided with a movable groove (6) for accommodating the semicircular cover plate (4), and the semicircular cover plate (4) rotates in the movable groove (6).
5. The shaft hole sealing device for a rotational molding heating furnace according to claim 4, characterized in that: The number of the movable grooves (6) corresponds one to one to the number of the semicircular cover plates (4).