Heat insulation fire observation mirror

Abstract

The utility model relates to a heat insulation fire observation mirror which is installed on a hearth and comprises a fire observation pipe, and one or two first gates used for blocking airflow are arranged in the fire observation pipe. Gate gaps facilitating opening and closing of the first gates are formed in the positions, corresponding to the first gates, of the pipe wall of the fire observation pipe, and one first gate corresponds to one gate gap. A second gate is arranged at an opening of the side, away from the hearth, of the fire observation pipe, and a rotating mechanism is arranged on the outer side of the fire observation pipe. When the first gate is closed, high-temperature airflow flowing out of the hearth is cut off, that is, airflow inside and outside the fire observation pipe is not communicated, the surface temperature of the glass fire observation mirror at the opening of the fire observation pipe is reduced, and the service life of the glass fire observation mirror is prolonged; after the first gate is opened, a passage is formed inside and outside the fire observation pipe, and combustion conditions can be observed normally. The second gate can be tightly matched with the square shaft to synchronously rotate along with the rotating shaft, the second gate can be separated from the square shaft and does not rotate along with the rotating shaft, and the second gate is opened and closed through manual rotation.

Description

Technical Field

[0001] The invention relates to the technical field of furnace accessories, and in particular to a heat-insulating fire-viewing mirror. Background Art

[0002] The current fire-viewing mirror generally includes a fire-viewing tube and a glass fire-viewing mirror arranged at the opening of the fire-viewing tube away from the furnace. Affected by the hot air flow in the fire-viewing tube, the surface temperature of the glass fire-viewing mirror is high, exceeding the national standard temperature, and is easy to break. Summary of the Invention

[0003] The purpose of the present invention is to provide an insulated fire-viewing mirror with a first gate arranged in the fire-viewing tube to cut off the airflow and reduce the surface temperature of the glass fire-viewing mirror in order to address the shortcomings of the existing fire-viewing mirrors in the background technology, such as being affected by hot air flow, causing their temperature to be high and resulting in easy cracking.

[0004] A heat-insulating fire-viewing mirror, mounted on a furnace, includes a fire-viewing tube with one or two first gates for isolating airflow. Gate slits are provided on the tube wall corresponding to the first gates to facilitate opening and closing, with one gate slit corresponding to each first gate. A second gate is provided at the opening of the fire-viewing tube away from the furnace, and a rotating mechanism is provided on the outside of the fire-viewing tube.

[0005] The rotating mechanism includes a rotating shaft and a sleeve. The sleeve is fixedly arranged on the outside of the fire viewing tube. The rotating shaft includes a square shaft and a circular shaft. One end of the circular shaft extends into the sleeve and is connected to the square shaft. The other end is provided with a rotating handle. The rotating shaft can be pushed in, pushed out and rotated in the sleeve. The first gate is sleeved on the square shaft through a first connecting rod and is always tightly fitted with the square shaft. The first connecting rod passes through the sleeve. The square shaft can drive the first gate to rotate. The second gate is sleeved on the rotating shaft through a second connecting rod, and the second connecting rod passes through the sleeve.

[0006] In one embodiment, the second gate includes a circular door frame and a glass fire-viewing mirror arranged in the circular door frame.

[0007] In one embodiment, the longitudinal section of the gate slit is arc-shaped or circular.

[0008] When the longitudinal section of the gate seam is an arc shape, the gate seam is located above the fire observation tube.

[0009] When the longitudinal section of the gate gap is circular, the gate gap divides the fire viewing tube into two sections, and the bottoms of the two sections of the fire viewing tube are connected and fixed by reinforcing ribs.

[0010] In one embodiment, the reinforcing ribs and the fire-viewing tube are connected by welding, screw connection, or riveting.

[0011] In one embodiment, a baffle is provided at one end of the sleeve away from the rotating handle, and the other end is an open structure. The cross-sectional length and width of the square shaft are both greater than the diameter of the circular shaft, and the length and height of the shaft hole on the second connecting rod are both greater than the diameter of the circular shaft.

[0012] The rotating shaft can be pushed out of the sleeve until the second connecting rod and the square shaft are tightly matched, so that the square shaft can drive the second gate to rotate.

[0013] When the rotating shaft is pushed into the sleeve until it contacts the baffle, the second connecting rod is separated from the square shaft and sleeved on the circular shaft.

[0014] In one embodiment, the outer diameter of the first gate is consistent with the inner diameter of the fire viewing tube, and the thickness of the first gate is less than or equal to the width of the gate gap.

[0015] In one embodiment, a limit block is provided on the outer wall of the fire viewing tube to prevent the first gate from completely separating from the fire viewing tube when rotating.

[0016] In one embodiment, a reflector is further provided outside the second gate, and the angle between the reflector and the second gate is 45°.

[0017] Advantages and beneficial effects of the present invention:

[0018] The present invention provides a first gate within the fire viewing tube, and a rotating mechanism is provided on the outside of the fire viewing tube to drive the first gate to rotate. When the first gate is closed, this design cuts off the high-temperature airflow flowing out of the furnace, that is, the airflow inside and outside the fire viewing tube is blocked, reducing the surface temperature of the glass fire viewing mirror at the opening of the fire viewing tube and extending the service life of the glass fire viewing mirror. After the first gate is opened, a passage is formed inside and outside the fire viewing tube, allowing normal observation of the combustion situation. The square shaft, circular shaft, and the design of the rotating shaft propelled out of the sleeve of the present invention enable the second gate to closely cooperate with the square shaft to achieve synchronous rotation with the rotating shaft, and also allow the second gate to be separated from the square shaft and not rotate with the rotating shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of Example 1.

[0020] Figure 2 It is a schematic diagram of the partial structure of Example 1 after disassembly.

[0021] Figure 3 This is a schematic diagram of the opening and closing status of the first gate and the second gate in Example 1.

[0022] Figure 4 This is a schematic diagram of the use state of the rotating shaft when it is pushed in and out of the sleeve in Example 1.

[0023] Figure 5Schematic diagram of the structure of the second connecting rod and the rotating shaft in Example 1.

[0024] Figure 6 It is a structural schematic diagram of the fire viewing tube of Example 2. DETAILED DESCRIPTION

[0025] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive disclosure of the present invention.

[0026] It should be noted that when an element is considered to be "disposed on" another element, it may be directly disposed on or connected to the other element or there may be a central element at the same time. The terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used in the specification are only for describing specific implementation purposes and are not intended to limit the present invention. Example 1

[0028] See also Figures 1 to 5 A heat-insulating fire-viewing mirror, mounted on a furnace, comprises a fire-viewing tube 1, within which is disposed a first gate 2 for isolating airflow. A gate slit 21 is provided on the wall of the fire-viewing tube 1, corresponding to the first gate 2, to facilitate opening and closing of the first gate 1. A second gate 3 is provided at the opening of the fire-viewing tube 1 away from the furnace, and a rotating mechanism 4 is disposed on the exterior of the fire-viewing tube 1.

[0029] Specifically, such as Figure 1 、 Figure 4 and Figure 5The rotating mechanism 4 includes a rotating shaft 41 and a sleeve 42. The sleeve 42 is fixedly arranged on the outside of the fire viewing tube 1. The rotating shaft 41 includes a square shaft 411 and a circular shaft 412. One end of the circular shaft 412 extends into the sleeve 42 and is connected to the square shaft 411. The other end is provided with a rotating handle 43. The rotating shaft 41 can be pushed, pushed out and rotated in the sleeve 42. The first gate 2 is sleeved on the square shaft 411 through the first connecting rod 22 and is always tightly matched with the square shaft 411. Figure 4 , and the first connecting rod 22 passes through the sleeve 42 as shown Figure 4 The square shaft 411 can drive the first gate 2 to rotate as follows Figure 3 The second gate 3 is sleeved on the rotating shaft 41 through the second connecting rod 31. Figure 4 , and the second connecting rod 31 passes through the sleeve 42 .

[0030] Specifically, such as Figure 4 The end of the sleeve 42 away from the rotating handle 43 is closed by a baffle 5, and the other end is an open structure. The cross-sectional length and width of the square shaft 411 are greater than the diameter of the circular shaft 412. Figure 5 The length and height of the shaft hole 32 on the second connecting rod 31 are both greater than the diameter of the circular shaft 412. Figure 5 .

[0031] like Figure 4 In the left figure, the rotating shaft 41 can be pushed out of the sleeve 42 until the second connecting rod 31 and the square shaft 411 are tightly matched, so that the square shaft 411 can drive the second gate 3 to rotate.

[0032] like Figure 4 In the middle right figure, when the rotating shaft 41 is pushed into the sleeve 42 until it contacts the baffle 5 , the second connecting rod 31 is separated from the square shaft 411 and sleeved on the circular shaft 412 .

[0033] Among them, such as Figure 1 and Figure 2 The second gate 3 includes a circular door frame 33 and a glass fire-viewing mirror 34 arranged in the circular door frame 33.

[0034] In this embodiment 1, Figure 2 The longitudinal section of the gate seam 21 is an arc shape, and the gate seam 21 is located at the upper part of the fire viewing tube 1.

[0035] In this embodiment 1: the outer diameter of the first gate 2 is consistent with the inner diameter of the fire viewing tube 1, and the thickness of the first gate 2 is equal to the width of the gate gap 21.

[0036] like Figure 3 A limit block 6 is provided on the outer wall of the fire viewing tube 1 to prevent the first gate 2 from completely separating from the fire viewing tube 1 when rotating.

[0037] Among them, a reflective mirror is also provided outside the second gate 2, and the angle between the reflective mirror and the second gate is 45°. Example 2

[0038] See also Figure 6 The difference between this embodiment 2 and embodiment 1 is that: Figure 2 In Example 1, the longitudinal section of the gate slit 21 is an arc shape, and the gate slit 21 is located at the upper part of the fire viewing tube 1; however, in Example 2, as Figure 6 The longitudinal section of the gate seam 21 is circular, and the gate seam 21 divides the fire viewing tube 1 into two sections. The bottoms of the two sections of the fire viewing tube are connected and fixed by reinforcing ribs 7.

[0039] The reinforcing rib 7 and the fire-viewing tube 1 are connected by welding.

[0040] It should be noted that the square axis 411 is a rectangular axis, a square axis, a hexagonal axis, or the like.

[0041] The working principle and working process of the present invention:

[0042] like Figure 4 , push the rotating shaft 41 out of the sleeve 41 for a certain distance, and the second connecting rod 31 can be closely matched with the square shaft 411 as shown Figure 4 The left side of the figure realizes the synchronous rotation of the second gate 3 and the rotating shaft 41; the rotating shaft 41 can also be pushed into the sleeve 42 until it contacts the baffle 5. Figure 4 In the figure on the right, the second connecting rod 31 is separated from the square shaft 411, and the second gate 3 does not rotate with the rotating shaft 41. Since the first gate 2 is always tightly fitted with the square shaft 411 through the first connecting rod 22, the first gate 2 always rotates with the rotating shaft 41.

[0043] like Figure 3 In the present invention, the rotating handle 43 is turned to drive the rotating shaft 41 to rotate in the sleeve 42, thereby driving the first gate 2 to open and close. Closing the first gate 2 can cut off the high-temperature airflow in the fire viewing tube 1 and reduce the surface temperature of the glass fire viewing mirror 34. After opening the first gate 2, the combustion situation in the furnace can be observed normally. When the rotating handle 43 is turned, as shown in FIG. Figure 3 The second gate 3 can be opened and closed by rotating together with the rotating shaft 41 , or can be opened and closed by manual rotation without rotating together with the rotating shaft 41 .

[0044] The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they are all included in the scope of this specification.

[0045] The embodiments described in the present invention are merely descriptions of the preferred implementation methods of the present invention and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made to the technical solutions of the present invention by engineers and technicians in this field should fall within the scope of protection of the present invention. The technical contents for which protection is sought in the present invention have all been recorded in the claims.

Claims

1. A heat-insulating fire-viewing mirror, installed on the furnace, characterized in that: The fire-viewing tube comprises a fire-viewing tube, wherein one or two first gates are provided in the fire-viewing tube for isolating the airflow, gate gaps are provided on the tube wall of the fire-viewing tube at positions corresponding to the first gates for facilitating the opening and closing of the first gates, and one first gate corresponds to one gate gap, a second gate is provided at the opening of the fire-viewing tube away from the furnace, and a rotating mechanism is provided on the outer side of the fire-viewing tube; The rotating mechanism includes a rotating shaft and a sleeve. The sleeve is fixedly arranged on the outside of the fire viewing tube. The rotating shaft includes a square shaft and a circular shaft. One end of the circular shaft extends into the sleeve and is connected to the square shaft. The other end is provided with a rotating handle. The rotating shaft can be pushed in, pushed out and rotated in the sleeve. The first gate is sleeved on the square shaft through a first connecting rod and is always tightly fitted with the square shaft. The first connecting rod passes through the sleeve. The square shaft can drive the first gate to rotate. The second gate is sleeved on the rotating shaft through a second connecting rod, and the second connecting rod passes through the sleeve.

2. The heat-insulating fire-viewing mirror according to claim 1, characterized in that: The second gate comprises a circular door frame and a glass fire-viewing mirror arranged in the circular door frame.

3. The heat-insulating fire-viewing mirror according to claim 1, characterized in that: The longitudinal section of the gate slit is an arc or a circle; When the longitudinal section of the gate gap is a superior arc, the gate gap is located above the fire-watching tube; When the longitudinal section of the gate gap is circular, the gate gap divides the fire viewing tube into two sections, and the bottoms of the two sections of the fire viewing tube are connected and fixed by reinforcing ribs.

4. The heat-insulating fire-viewing mirror according to claim 3, characterized in that: The reinforcing ribs and the fire-viewing tube are connected by welding, screw connection, or riveting.

5. The heat-insulating fire-viewing mirror according to claim 1, characterized in that: The sleeve is provided with a baffle at one end away from the rotating handle and is open at the other end. The cross-sectional length and width of the square shaft are both greater than the diameter of the circular shaft. The length and height of the shaft hole on the second connecting rod are both greater than the diameter of the circular shaft. The rotating shaft can be pushed out of the sleeve until the second connecting rod and the square shaft are tightly matched, so that the square shaft can drive the second gate to rotate; When the rotating shaft is pushed into the sleeve until it contacts the baffle, the second connecting rod is separated from the square shaft and sleeved on the circular shaft.

6. The heat-insulating fire-viewing mirror according to claim 1, characterized in that: The outer diameter of the first gate is consistent with the inner diameter of the fire viewing tube, and the thickness of the first gate is less than or equal to the width of the gate gap.

7. The heat-insulating fire-viewing mirror according to claim 1, characterized in that: A limiting block is provided on the outer wall of the fire viewing tube to prevent the first gate from completely separating from the fire viewing tube when rotating.

8. The heat-insulating fire-viewing mirror according to claim 1, characterized in that: A reflector is further provided outside the second gate, and the included angle between the reflector and the second gate is 45°.

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