Fire hole cover and fire hole structure

Abstract

The utility model discloses a kind of fire hole cover and fire hole structure, it is related to calcination furnace technical field, main purpose is on the basis of reducing the misplacement probability of observation fire hole and flue hole, avoid burner and thermocouple in observation fire hole sway, deflection.The main technical scheme of the utility model is as follows: fire hole cover, it includes: annular cover body, multiple L type rods and inner cover body;The lower end surface circumference of annular cover body is uniformly distributed with multiple rectangular grooves, the first end of rectangular groove close to the center of annular cover body, annular cover body is equipped with center hole, the diameter of center hole is in line with the diameter of burner;Each L type rod includes mutually fixedly connected first straight rod and second straight rod, the connecting part of first straight rod and second straight rod is hinged to the opposite side wall of first end by pivot, first straight rod is located in rectangular groove, and second straight rod falls downward;The diameter of inner cover body is in line with the diameter of center hole.

Description

Technical Field

[0001] This utility model relates to the field of roasting furnace technology, and in particular to a fire hole cover and fire hole structure. Background Technology

[0002] The core function of the observation port in a roasting furnace is observation and control. For example, the system requires the burner to be placed through the observation port for combustion and temperature rise. Therefore, the observation port is a crucial part of the roasting furnace system's operation.

[0003] The existing precast block observation holes are funnel-shaped with a larger upper diameter and a smaller lower diameter. On the one hand, during system operation, the larger upper diameter of the observation hole causes the burner to sway and deviate within the observation hole, resulting in inaccurate thermocouple monitoring data and direct flame jetting into the inner wall of the fire channel, burning through the fire channel. On the other hand, because the precast blocks of the fire channel wall repeatedly undergo high-temperature baking and cooling processes, the smaller lower diameter of the observation hole is prone to misalignment with the upper fire channel hole of the fire channel wall. Utility Model Content

[0004] In view of this, the present invention provides a flame hole cover and flame hole structure, the main purpose of which is to reduce the probability of misalignment between the observation hole and the flame channel hole, and to prevent the burner and thermocouple from shaking or tilting in the observation hole.

[0005] To achieve the above objectives, this utility model mainly provides the following technical solutions:

[0006] On the one hand, this utility model provides a fire hole cover, which includes: an annular cover body, multiple L-shaped rods and an inner cover body;

[0007] The lower end face of the annular cover is evenly distributed with multiple rectangular grooves. The end of the rectangular groove closest to the center of the annular cover is the first end. The annular cover is provided with a central hole, the diameter of which matches the diameter of the burner.

[0008] Each L-shaped rod includes a first straight rod and a second straight rod that are fixedly connected to each other. The connection between the first straight rod and the second straight rod is pivotally hinged to the opposite sidewall of the first end. The first straight rod is located in the rectangular groove, and the second straight rod hangs down.

[0009] The diameter of the inner cover matches the diameter of the central hole.

[0010] The purpose of this utility model and the technical problems to be solved can be further achieved by the following technical measures.

[0011] Optionally, it also includes a push rod, which is fixedly connected to the free end of the first straight rod. The push rod and the second straight rod are respectively perpendicular to the first straight rod, and the length of the push rod is equal to the depth of the rectangular groove.

[0012] Optionally, the outer edge of the connection between the first straight rod and the second straight rod is an arc surface, the center of curvature of the arc surface coincides with the pivot, and the arc surface contacts the first end.

[0013] Optionally, the inner wall of the central hole is provided with a recess, and the axial side surface of the inner cover body matches the recess.

[0014] Optionally, it may also include a first lifting lug, which is fixedly connected to the upper end face of the inner cover.

[0015] Optionally, it also includes two second lifting lugs, which are respectively fixedly connected to the upper end face of the annular cover.

[0016] Optionally, there are four rectangular grooves and four L-shaped rods, with each L-shaped rod corresponding to one of the rectangular grooves.

[0017] On the other hand, this utility model provides a fire hole structure, which includes:

[0018] The precast block and the aforementioned fire hole cover, wherein the precast block is provided with a fire observation channel, the upper port area of ​​the fire observation channel is smaller than the lower port area of ​​the fire observation channel, and the fire observation channel corresponds to the fire hole at the upper end of the fire channel wall.

[0019] By employing the above technical solution, this utility model has at least the following advantages:

[0020] When the fire hole cover is not in use and is naturally suspended, the torque of the first straight rod, with the pivot as the fulcrum, drives the free end of the first straight rod to drop down to the outside of the rectangular groove, causing the second straight rod to abut against the inner wall of the first end of the rectangular groove.

[0021] When the fire hole cover is needed to cover the fire observation channel (the area of ​​the upper end of the fire observation channel is smaller than the area of ​​the lower end of the fire observation channel), the free end of the first straight rod contacts the upper end surface of the precast block, the first straight rod rotates around the pivot to the rectangular groove, the second straight rod rotates away from the inner wall of the first end of the rectangular groove, and multiple second straight rods simultaneously abut against the inner wall of the fire observation channel.

[0022] By using the above method, the area of ​​the upper end of the observation channel is smaller than the area of ​​the lower end of the observation channel, reducing the probability of misalignment between the observation channel and the fire channel. At the same time, multiple second straight rods can also be attached to the inner wall of the observation channel, and the annular cover will not shake inside the observation channel. Based on this, the burner is placed in the central hole, which reduces the probability of the burner shaking or tilting inside the observation channel.

[0023] When the burner is not needed, simply replace it with the inner cover and place it in the center hole.

[0024] Using this fire hole cover not only ensures that the observation hole has a smaller diameter at the top and a larger diameter at the bottom, but also maintains the stability of the annular cover relative to the observation hole. Attached Figure Description

[0025] Figure 1 A schematic diagram of a fire hole structure provided for an embodiment of this utility model;

[0026] Figure 2 A schematic diagram showing the disassembled structure of a fire hole cover provided for an embodiment of this utility model;

[0027] Figure 3 A schematic diagram illustrating the assembly of a fire port cover and a burner according to an embodiment of this utility model.

[0028] Figure 4 for Figure 1 Enlarged view of section A.

[0029] The reference numerals in the accompanying drawings include: 1. Annular cover; 2. L-shaped rod; 3. Inner cover; 4. Rectangular groove; 5. Center hole; 6. Burner; 7. Push rod; 8. Arc surface; 9. Recess; 10. First lifting lug; 11. Second lifting lug; 12. Arc plate; 13. Precast block; 14. Fire channel hole; 201. First straight rod; 202. Second straight rod; 15. Observation channel. Detailed Implementation

[0030] To further illustrate the technical means and effects adopted by this utility model to achieve its intended purpose, the specific implementation methods, structures, features, and effects according to this utility model application are described in detail below with reference to the accompanying drawings and preferred embodiments. In the following description, different "embodiments" or "embodiments" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0032] like Figure 1 , Figure 2 , Figure 3 As shown, one embodiment of the present invention provides a fire hole cover, which includes: an annular cover body 1, a plurality of L-shaped rods 2 and an inner cover body 3;

[0033] The lower end face of the annular cover 1 is evenly distributed with a plurality of rectangular grooves 4. The end of the rectangular groove 4 closest to the center of the annular cover 1 is the first end. The annular cover 1 is provided with a central hole 5. The diameter of the central hole 5 matches the diameter of the burner 6.

[0034] Each of the L-shaped rods 2 includes a first straight rod 201 and a second straight rod 202 that are fixedly connected to each other. The connection between the first straight rod 201 and the second straight rod 202 is pivotally hinged to the opposite sidewall of the first end. The first straight rod 201 is located in the rectangular groove 4, and the second straight rod 202 hangs down.

[0035] The diameter of the inner cover 3 matches the diameter of the central hole 5.

[0036] The working process of the fire hole cover is as follows:

[0037] When the fire hole cover is not in use and is naturally suspended, the torque of the first straight rod 201, with the pivot as the fulcrum, drives the free end of the first straight rod 201 to drop down to the outside of the rectangular groove 4, causing the second straight rod 202 to abut against the inner wall of the first end of the rectangular groove 4.

[0038] When the fire hole cover is needed to cover the fire observation channel 15 (the area of ​​the upper end of the fire observation channel 15 is smaller than the area of ​​the lower end of the fire observation channel 15), the free end of the first straight rod 201 contacts the upper end face of the precast block 13, the first straight rod 201 rotates around the pivot to the rectangular groove 4, the second straight rod 202 rotates away from the inner side wall of the first end of the rectangular groove 4, and multiple second straight rods 202 simultaneously abut against the inner side wall of the fire observation channel 15.

[0039] In this way, the area of ​​the upper end of the observation channel 15 is smaller than the area of ​​the lower end of the observation channel 15, reducing the probability of misalignment between the observation channel 15 and the fire channel 14. At the same time, multiple second straight rods 202 can also be attached to the inner wall of the observation channel 15, and the annular cover 1 will not shake inside the observation channel 15. Based on this, the burner 6 is placed inside the central hole 5, which reduces the probability of the burner 6 shaking or tilting inside the observation channel 15.

[0040] When the burner 6 is not needed, the burner 6 can be replaced with the inner cover 3 and placed in the center hole 5.

[0041] Specifically, the length of the rectangular groove 4 is along the diameter of the annular cover 1.

[0042] Specifically, the end of the rectangular groove 4 furthest from the center of the annular cover 1 is the second end.

[0043] like Figures 1 to 3 As shown, in a specific embodiment, it also includes a push rod 7, which is fixedly connected to the free end of the first straight rod 201. The push rod 7 and the second straight rod 202 are respectively perpendicular to the first straight rod 201, and the length of the push rod 7 is equal to the depth of the rectangular groove 4.

[0044] In this embodiment, specifically, when the fire hole cover is not covering the fire observation channel 15, the push rod 7 hangs down to the outside of the rectangular groove 4. When the fire hole cover covers the fire observation channel 15, the push rod 7 contacts the upper end surface of the precast block 13, moves into the rectangular groove 4, and drives the L-shaped rod 2 to rotate. The second straight rod 202 fits against the inner side wall of the fire observation channel 15. At the same time, because the length of the push rod 7 is equal to the depth of the rectangular groove 4, the upper end of the push rod 7 abuts against the top wall of the rectangular groove 4, avoiding excessive rotation of the L-shaped rod 2.

[0045] like Figure 1 and Figure 4 As shown, in a specific embodiment, the outer edge of the connection part between the first straight rod 201 and the second straight rod 202 is an arc surface 8, the curvature center of the arc surface 8 coincides with the pivot, and the arc surface 8 contacts the first end.

[0046] In this embodiment, specifically, the central angle of the arc surface 8 is 90°. When the fire hole cover does not cover the fire viewing channel 15 and the fire hole cover is naturally suspended, under the torque drive of the first straight rod 201, the upper outer side of the second straight rod 202 and the side of the arc surface 8 simultaneously contact the first end of the rectangular groove 4, so that the second straight rod 202 remains in a vertical state.

[0047] like Figure 2 As shown, in a specific embodiment, the inner wall of the central hole 5 is provided with a recessed platform 9, and the axial side surface of the inner cover 3 matches the recessed platform 9.

[0048] In this embodiment, specifically, the axial side of the inner cover 3 matches the recess 9, improving the stability of the inner cover 3 within the central hole 5 and enhancing the sealing performance of the inner cover 3 to the central hole 5. At the same time, the retaining ring on the axial side of the burner 6 overlaps on the recess 9, further improving the stability of the burner 6 within the central hole 5.

[0049] like Figure 2 As shown, in a specific embodiment, it also includes a first lifting lug 10, which is fixedly connected to the upper end face of the inner cover 3.

[0050] In this embodiment, specifically, it is convenient for people to hold the first lifting lug 10 and pull the inner cover 3 out of the central hole 5, or put the inner cover 3 into the central hole 5.

[0051] like Figure 2 As shown, in a specific embodiment, it also includes two second lifting lugs 11, which are respectively fixedly connected to the upper end face of the annular cover 1.

[0052] In this embodiment, two second lifting lugs 11 are symmetrically distributed on the upper end face of the annular cover 1, making it convenient for people to hold the two second lifting lugs 11 and lift or lower the annular cover 1 horizontally, so that multiple second straight rods 202 simultaneously pass over the upper port of the central hole 5.

[0053] In a specific embodiment, there are four rectangular grooves 4 and four L-shaped rods 2, with each L-shaped rod 2 corresponding to one of the rectangular grooves 4.

[0054] In this embodiment, specifically, when using the fire hole cover, the second straight rods 202 of the four L-shaped rods 2 simultaneously abut against the inner sidewall of the fire observation channel 15, so that the central axis of the central hole 5 coincides with the central axis of the fire observation channel 15.

[0055] Specifically, the lower end of each second straight rod 202 is fixedly connected to the arc plate 12. As the second straight rod 202 abuts against the inner wall of the fire observation channel 15, the arc plate 12 also abuts against the inner wall of the fire observation channel 15, increasing the stability of the annular cover 1 within the fire observation channel 15. The curvature of the arc plate 12 matches the curvature of the side wall of the fire observation channel 15.

[0056] like Figure 1 As shown, another embodiment of the present invention provides a fire hole structure, which includes:

[0057] The precast block 13 and the aforementioned fire hole cover, wherein the precast block 13 is provided with a fire observation channel 15, the upper port area of ​​the fire observation channel 15 is smaller than the lower port area of ​​the fire observation channel 15, and the fire observation channel 15 corresponds to the fire hole 14 at the upper end of the fire channel wall.

[0058] In this embodiment, the lower end of the observation channel 15 has a large area. When the misalignment between the observation channel 15 and the fire channel hole 14 at the upper end of the fire channel wall is constant, the lower end with a larger area can maintain a larger overlap area with the fire channel hole 14, which facilitates the flame eye of the burner 6 to enter the fire channel.

[0059] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A fire hole cover, characterized in that, include: The annular cover has multiple rectangular grooves evenly distributed around its lower end surface. The end of each rectangular groove closest to the center of the annular cover is the first end. The annular cover has a central hole with a diameter that matches the diameter of the burner. Multiple L-shaped rods, each of which includes a first straight rod and a second straight rod that are fixedly connected to each other. The connection between the first straight rod and the second straight rod is pivotally hinged to the opposite sidewall of the first end. The first straight rod is located in the rectangular groove, and the second straight rod hangs down. The inner cover has a diameter that matches the diameter of the central hole.

2. The fire hole cover according to claim 1, characterized in that, It also includes a push rod, which is fixedly connected to the free end of the first straight rod. The push rod and the second straight rod are respectively perpendicular to the first straight rod, and the length of the push rod is equal to the depth of the rectangular groove.

3. The fire hole cover according to claim 1, characterized in that, The outer edge of the connection between the first straight rod and the second straight rod is an arc surface, the center of curvature of the arc surface coincides with the pivot, and the arc surface contacts the first end.

4. The fire hole cover according to claim 1, characterized in that, The inner wall of the central hole is provided with a recessed platform, and the axial side surface of the inner cover body matches the recessed platform.

5. The fire hole cover according to claim 1, characterized in that, It also includes a first lifting lug, which is fixedly connected to the upper end face of the inner cover.

6. The fire hole cover according to claim 1, characterized in that, It also includes two second lifting lugs, which are respectively fixedly connected to the upper end face of the annular cover.

7. The fire hole cover according to claim 1, characterized in that, There are four rectangular grooves and four L-shaped rods, with each L-shaped rod corresponding to one of the rectangular grooves.

8. A fire hole structure, characterized in that, include: The precast block and the fire hole cover according to any one of claims 1 to 7, wherein the precast block is provided with a fire observation channel, the upper port area of ​​the fire observation channel is smaller than the lower port area of ​​the fire observation channel, and the fire observation channel corresponds to the fire hole at the upper end of the fire channel wall.

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