A viewing window capable of preventing material from spilling
By adding a connecting cover and locking components to the observation window, combined with polycarbonate material and ceramic coating, the problem of loosening and leakage caused by material impact is solved, achieving efficient sealing performance and extended service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUADIAN LAIZHOU POWER GENERATION
- Filing Date
- 2025-04-28
- Publication Date
- 2026-06-09
AI Technical Summary
In existing technologies, the observation window is susceptible to impact from materials, which can cause it to loosen or deform, leading to material spillage.
A connecting cover and locking assembly are added to the observation window. The connecting cover is connected to the coal drop pipe, and the window panel is hinged to the mounting frame via a hinge. The three edges are pressed against the surface of the mounting frame by the locking assembly. The combination of polycarbonate material and ceramic coating improves impact resistance and sealing performance.
It effectively prevents damage to the window panel caused by material impact, significantly improves sealing performance, avoids material leakage, and extends the service life and sealing performance of the observation window.
Smart Images

Figure CN224336349U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of conveying equipment technology, and in particular to an observation window that can prevent material spillage. Background Technology
[0002] Belt conveyors are key equipment for continuous material transport in industrial settings such as power plants. Their core function is to transport materials such as coal over long distances from coal storage yards and crushing workshops to boiler raw coal bunkers via the cyclical operation of the conveyor belt. In industrial production processes, the stable operation of belt conveyors has a significant impact on the continuity and efficiency of material transport.
[0003] Considering the safety of equipment operation, ease of maintenance, and production monitoring needs, an observation window needs to be installed in the middle of the coal chute at the material transfer point. The main functions of this observation window include: real-time monitoring of material transport status, providing equipment maintenance personnel with an intuitive inspection view, and supporting manual intervention when necessary (such as clearing debris). In existing technical solutions, the observation window is typically mounted to the coal chute wall via a hinge on one side, while the other side is fixedly connected to the coal chute using a locking mechanism.
[0004] During the implementation process, the inventors discovered that the above-mentioned prior art has at least the following defects: Since the observation window is directly connected to the coal chute through a hinge, the observation window is easily impacted by the material during the falling process in the coal chute, affecting the normal use of the observation window; on the other hand, the observation window is prone to loosening or deformation after being impacted, and over time the falling material is prone to leaking from between the observation window and the coal chute. Utility Model Content
[0005] This application provides an observation window that can prevent material spillage, thus solving the technical problem in the prior art where the observation window is easily affected by material impacts and is prone to loosening and deformation after impact, leading to material spillage.
[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: an observation window that can prevent material spillage, including a window panel, a hinge installed on one side of the window panel, a connecting cover and a locking assembly, an opening at one end of the connecting cover that can communicate with a coal drop pipe, and an installation frame fixed at the opening at the other end of the connecting cover, the installation frame being connected to the window panel; the edge of one side of the window panel is hinged to the surface of the installation frame by the hinge, and the edge of the other side of the window panel and its upper and lower edges are pressed against the surface of the installation frame by the locking assembly.
[0007] Because this utility model adds a connecting cover and a locking assembly to the window panel, one end of the connecting cover is connected to the coal chute and the other end is fixed to the mounting frame. The window panel is hinged to the mounting frame via a hinge, and the other side and the upper and lower edges are pressed against the surface of the mounting frame by the locking assembly. Therefore, the material falling from the coal chute will not directly impact the window panel, avoiding the problem of window panel damage caused by material impact. At the same time, the three edges of the window panel are tightly pressed against the mounting frame by the locking assembly. Compared with the structure of locking only one side in the prior art, the sealing performance is significantly improved, effectively preventing material from leaking from the gap between the window panel and the mounting frame.
[0008] As a further improvement to the above solution, the window panel includes a polycarbonate body with a ceramic coating on the inner surface. The high strength and impact resistance of the polycarbonate material can withstand minor collisions that may occur inside the coal chute, preventing the window panel from being damaged by impact. At the same time, the wear-resistant and corrosion-resistant properties of the ceramic coating can extend the service life of the window panel, and its smooth surface can reduce material adhesion and maintain a clear field of vision.
[0009] As a further improvement to the above solution, a sealing groove is provided on the mounting frame for installing sealing filler. The sealing filler in the sealing groove can contact the surface of the window panel. Thus, when the window panel is pressed by the locking assembly, the sealing filler is compressed and tightly adheres to the surface of the window panel, forming a sealing barrier, which further prevents materials and dust from leaking from the gap between the window panel and the mounting frame, thereby improving the sealing performance of the observation window.
[0010] As a further improvement to the above solution, the edge of the window panel away from the hinged side with the mounting frame, as well as the upper and lower edges of the window panel, are fixed to the mounting frame by at least two locking components; thus, the window panel is subjected to more even force when locked, which can avoid the problem of local poor sealing caused by single-point locking, thereby significantly improving the overall sealing performance between the window panel and the mounting frame.
[0011] As a further improvement to the above solution, the locking assembly includes a stud, which is fixed to the mounting frame. The stud has a clamping ring on its external thread. By rotating the clamping ring, the edge of the window panel can be clamped.
[0012] As a further improvement to the above solution, the locking assembly also includes a stop block. One side of the stop block is fixed to the surface of the window panel, and the other side of the stop block extends out of the edge of the window panel and is provided with a groove. The width of the groove is greater than the radial dimension of the stud and smaller than the outer diameter of the clamping ring. Thus, when the window panel rotates to reset around the hinge, the groove of the stop block can quickly engage with the outside of the stud, achieving the initial positioning of the window panel. When the clamping ring is rotated, the outer diameter of the clamping ring is greater than the width of the groove, which allows the end face of the clamping ring to directly press the stop block, thereby tightly pressing the edge of the window panel onto the surface of the mounting frame.
[0013] As a further improvement to the above solution, the locking assembly also includes a stop block, which is located on one side of the clamping ring and fixed as a whole with the clamping ring. When the clamping ring is rotated, the stop block can rotate accordingly and press against the surface of the window panel. Thus, during the rotation of the clamping ring, the stop block can apply pressure to the window panel, so that the edge of the window panel is pressed against the surface of the mounting frame.
[0014] As a further improvement to the above solution, the clamping ring is connected to a handle via a linkage; thus, the operator can apply force by gripping the handle, which provides a larger force application area and reduces the difficulty of locking or unlocking the window panel.
[0015] As can be seen from the above technical solutions, this utility model has at least the following technical effects or advantages:
[0016] 1. Because this utility model adds a connecting cover and a locking assembly to the window panel, one end of the connecting cover is connected to the coal chute and the other end is fixed to the mounting frame. The window panel is hinged to the mounting frame by a hinge, and the other side and the upper and lower edges are pressed against the surface of the mounting frame by the locking assembly. Therefore, the material falling in the coal chute will not directly impact the window panel, avoiding the problem of window panel damage caused by material impact. At the same time, the three edges of the window panel are tightly pressed against the mounting frame by the locking assembly. Compared with the structure of locking only one side in the prior art, the sealing performance is significantly improved, effectively preventing material from leaking from the gap between the window panel and the mounting frame.
[0017] 2. Because the mounting frame has a sealing groove for installing sealing filler, and the sealing filler in the sealing groove can contact the surface of the window panel, when the window panel is pressed by the locking assembly, the sealing filler will be compressed and tightly adhered to the surface of the window panel, forming a sealing barrier, which further prevents materials and dust from leaking from the gap between the window panel and the mounting frame, thus improving the sealing performance of the observation window.
[0018] 3. Since the edge of the window panel away from the hinged side with the mounting frame, as well as the upper and lower edges of the window panel, are fixed to the mounting frame by at least two locking components, and the locking components are evenly distributed on the corresponding edges, the window panel is subjected to more uniform force when locked. This avoids the problem of local sealing failure caused by single-point locking, thereby significantly improving the overall sealing performance between the window panel and the mounting frame and effectively preventing materials from leaking out of the gaps. Attached Figure Description
[0019] To more clearly illustrate the technical solution of this utility model, the accompanying drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1This is a schematic diagram of the overall structure of this utility model;
[0021] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle;
[0022] Figure 3 This is a schematic diagram of the structure of the concealed window panel and hinge of this utility model;
[0023] Figure 4 for Figure 3 A magnified view of a portion of point B in the middle.
[0024] Explanation of reference numerals in the attached drawings: 1. Connecting cover; 2. Locking assembly; 201. Stud; 202. Pressure ring; 203. Stop; 3. Mounting frame; 301. Connecting plate A; 302. Connecting plate B; 4. Window panel; 5. Hinge; 6. Sealing groove; 7. Connecting rod; 8. Rotary handle. Detailed Implementation
[0025] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, other embodiments obtained by those skilled in the art without creative effort are all within the scope of protection of this patent.
[0026] This utility model discloses an observation window that can prevent material spillage. Please refer to [link / reference]. Figures 1 to 4 It includes a window panel 4, a connecting cover 1, and a locking assembly 2. A hinge 5 is installed on one side of the window panel 4. The opening at one end of the connecting cover 1 can communicate with the coal drop pipe, and the opening at the other end of the connecting cover 1 is fixed with a mounting frame 3, which is connected to the window panel 4. The edge of one side of the window panel 4 is hinged to the surface of the mounting frame 3 through the hinge 5, and the edge of the other side of the window panel 4, as well as the upper and lower edges, are pressed against the surface of the mounting frame 3 through the locking assembly 2.
[0027] In this embodiment, as Figure 1 As shown, the connecting cover 1 is a cylindrical structure, with one end opening that aligns with the opening in the coal chute wall and can be fixed by welding. The other end of the connecting cover 1 is also fixed to the mounting frame 3 by welding. The window panel 4 is a transparent plate structure, with its left edge hinged to the surface of the mounting frame 3 via a hinge 5. The hinge 5's pivot is vertically oriented, allowing the window panel 4 to rotate outwards around its left edge. The right edge, upper, and lower edges of the window panel 4 are all fixedly connected to the mounting frame 3 via locking components 2, achieving a sealed and compressed connection.
[0028] In actual operation, when manual intervention is required (such as cleaning debris), the window panel 4 can be opened. When it is necessary to observe the inside of the coal chute, the window panel can be kept closed, and the operator can observe the inside of the coal chute through the transparent window panel 4. Because a connecting cover 1 is set between the coal chute and the mounting frame 3, the material will not directly impact the window panel 4 when falling inside the coal chute. At the same time, the three edges of the window panel 4 are tightly pressed against the mounting frame 3 by the locking assembly 2. Combined with the sealing structure on the mounting frame 3, compared with the existing technology of locking only one side, the sealing performance is significantly improved, effectively preventing material from leaking from the gap between the window panel 4 and the mounting frame 3.
[0029] The window panel 4 comprises a polycarbonate body with a ceramic coating on its inner surface. In this embodiment, the polycarbonate material has high strength and impact resistance, enabling it to withstand minor collisions that may occur inside the coal chute. The ceramic coating on the surface is wear-resistant and corrosion-resistant, which can further improve the service life of the window panel 4. At the same time, the smooth surface of the ceramic coating helps to reduce material adhesion and maintain a clear field of vision.
[0030] In the specific structure of the mounting frame 3, a sealing groove 6 is provided on the mounting frame 3 for installing sealing filler, and the sealing filler in the sealing groove 6 can contact the surface of the window panel 4. For example... Figure 3 , Figure 4 As shown, the mounting frame 3 includes a connecting plate A301 and a connecting plate B302. Connecting plate A301 has a frame-like structure, with its inner edge welded and fixed to the edge of one opening of the connecting cover 1. Connecting plate B302 also has a frame-like structure and is welded and fixed to the surface of connecting plate A301. The inner edges of connecting plate A301 and connecting plate B302 form an outwardly expanding stepped surface. The stepped surface forms a sealing groove 6 for installing sealing filler. In this embodiment, the sealing filler is packing. The packing filler is filled in the sealing groove 6. When the window panel 4 is pressed by the locking assembly 2, the packing is compressed and tightly adheres to the surface of the window panel 4, forming a sealing barrier, which can further prevent materials and dust from leaking from the gaps.
[0031] Furthermore, the edge of the window panel 4 away from its hinged side with the mounting frame 3, as well as the upper and lower edges of the window panel 4, are fixed to the mounting frame 3 by at least two locking components 2. In this embodiment, as... Figure 1 , Figure 3 As shown, two locking components 2 are provided on the right edge and the top and bottom edges of the window panel 4, and they are evenly distributed. Taking the right edge of the window panel 4 as an example, the two locking components 2 are close to the top and bottom of the window panel 4 respectively to ensure that the window panel 4 is subjected to uniform force when locked, thereby avoiding the problem of poor sealing caused by single-point locking.
[0032] Regarding the specific structure of the locking assembly 2, the locking assembly 2 includes a stud 201, which is fixed to the mounting frame 3. A clamping ring 202 is threaded onto the external surface of the stud 201. By rotating the clamping ring 202, the edge of the window panel 4 can be clamped. In this embodiment, as... Figure 2 As shown, stud 201 is vertically welded and fixed to the mounting frame 3. When the window panel 4 is closed, stud 201 extends outward through the opening at the edge of the window panel 4. The clamping ring 202 is a ring structure with internal threads, which mates with the external threads of the stud 201. When it is necessary to lock the window panel 4, the operator rotates the clamping ring 202 clockwise, causing it to move along the stud 201 towards the window panel 4, pressing the edge of the window panel 4 against the surface of the mounting frame 3; rotating the clamping ring 202 counterclockwise loosens the window panel 4. In the above structure, locking is achieved through the threaded engagement of the stud 201 and the clamping ring 202. The structure is simple and reliable, easy to operate, and allows for quick installation and fastening of the window panel 4.
[0033] There are two implementation scenarios regarding the cooperation between the locking assembly 2 and the window panel 4. In the first scenario, the locking assembly 2 also includes a stop block 203. One side of the stop block 203 is fixed to the surface of the window panel 4, and the other side of the stop block 203 extends beyond the edge of the window panel 4 and has a slot. The width of the slot is greater than the radial dimension of the stud 201 and less than the outer diameter of the clamping ring 202. The stop block 203 is fixed to the edge of the window panel 4, and its portion extending beyond the edge of the window panel 4 has a U-shaped slot. The width of the slot is slightly greater than the diameter of the stud 201, ensuring that the stud 201 can pass through smoothly. When the window panel 4 is reset, the slot of the stop block 203 engages with the outer circumference of the stud 201. Then, by rotating the clamping ring 202, the end face of the clamping ring 202 contacts the surface of the stop block 203, thus pressing the window panel 4 firmly onto the mounting frame 3.
[0034] In the second scenario, the stop block 203 is located on one side of the clamping ring 202 and is fixed integrally with the clamping ring 202. Rotating the clamping ring 202 causes the stop block 203 to rotate accordingly and press against the surface of the window panel 4. Specifically, the stop block 203 is connected to the clamping ring 202 by welding or bolts and rotates synchronously with the clamping ring 202. When the clamping ring 202 is rotated, the end face of the stop block 203 gradually approaches the surface of the window panel 4, eventually adhering to and pressing against the window panel 4.
[0035] In addition, such as Figure 2The clamping ring 202 shown is connected to a handle 8 via a connecting rod 7. In this embodiment, the connecting rod 7 is a cylindrical rod, and there are three of them, evenly arranged in an array along the circumference of the clamping ring 202. One end of the connecting rod 7 is welded and fixed to the outer wall of the clamping ring 202, and the other end is welded and fixed to the inner ring of the handle 8. The handle 8 is annular, and its outer diameter is larger than that of the clamping ring 202. This allows the operator to easily grip and rotate it. By applying force to the handle 8, the clamping ring 202 can be rotated more easily, reducing the difficulty of operation for the operator and improving work efficiency.
[0036] In the description of this utility model, the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for describing this utility model and do not require that this utility model be constructed or operated in a specific orientation, and therefore should not be construed as limiting this utility model. The terms "connected" and "linked" in this utility model should be interpreted broadly. For example, they can refer to a connection or a detachable connection; they can refer to a direct connection or an indirect connection through intermediate components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.
[0037] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in its embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novelty disclosed herein.
Claims
1. An observation window for preventing material spillage, comprising a window panel (4), wherein a hinge (5) is installed on one side of the window panel (4), characterized in that, It also includes a connecting cover (1) and a locking assembly (2). The opening at one end of the connecting cover (1) can be connected to the coal drop pipe. The opening at the other end of the connecting cover (1) is fixed with a mounting frame (3). The mounting frame (3) is connected to the window panel (4). The edge of one side of the window panel (4) is hinged to the surface of the mounting frame (3) through a hinge (5). The edge of the other side of the window panel (4) and the upper and lower edges are pressed against the surface of the mounting frame (3) through the locking assembly (2).
2. The observation window for preventing material spillage according to claim 1, characterized in that, The window panel (4) includes a polycarbonate body with a ceramic coating on the inner surface of the body.
3. The observation window for preventing material spillage according to claim 2, characterized in that, The mounting frame (3) is provided with a sealing groove (6) for installing sealing filler, and the sealing filler in the sealing groove (6) can contact the surface of the window panel (4).
4. An observation window for preventing material spillage according to any one of claims 1 to 3, characterized in that, The edge of the window panel (4) away from the side that is hinged to the mounting frame (3), as well as the upper and lower edges of the window panel (4), are fixed to the mounting frame (3) by at least two locking components (2).
5. An observation window for preventing material spillage according to claim 4, characterized in that, The locking assembly (2) includes a stud (201), which is fixed to the mounting frame (3). The external thread of the stud (201) is fitted with a clamping ring (202). By rotating the clamping ring (202), the edge of the window panel (4) can be clamped.
6. The observation window for preventing material spillage according to claim 5, characterized in that, The locking assembly (2) also includes a stop (203), one side of which is fixed to the surface of the window panel (4), and the other side of which extends out of the edge of the window panel (4) and has a groove. The width of the groove is greater than the radial dimension of the stud (201) and smaller than the outer diameter of the clamping ring (202).
7. An observation window for preventing material spillage according to claim 5, characterized in that, The locking assembly (2) also includes a stop (203), which is located on one side of the clamping ring (202) and is fixed to the clamping ring (202). When the clamping ring (202) is rotated, the stop (203) can rotate and press against the surface of the window panel (4).
8. An observation window for preventing material spillage according to claim 5, characterized in that, The clamping ring (202) is connected to the handle (8) via the connecting rod (7).