Fire door cast iron plate with high sealing performance

Abstract

The utility model provides a fire door cast iron plate with high sealing performance. The fire door cast iron plate comprises a pulverized coal furnace wall, transmission lead screws are arranged on the two sides of the pulverized coal furnace wall, a lifting sliding plate is arranged between the two transmission lead screws, top plates are arranged on the two sides of the top of the lifting sliding plate, and a rotating shaft is connected between the two top plates in a threaded mode. The fire damper is reasonable in design, the cam can push the fire damper to move inwards, the outer wall of the fire damper is attached to the inner wall of the feeding and discharging port, when the feeding and discharging port needs to be opened, the cam is rotated firstly, the short edge of the cam is attached to the outer wall of the fire damper, and the outer wall of the fire damper is separated from the feeding and discharging port; and then the transmission lead screw drives the lifting sliding plate to move upwards, firm connection between the fireproof plate and the feeding and discharging opening is achieved, and the fireproof plate is opened at any time after the rotating shaft is rotated through a wrench.

Description

Technical Field

[0001] The utility model mainly relates to the field of fire-blocking doors for pulverized coal furnaces, and in particular to a cast iron plate for fire-blocking doors with strong sealing performance. Background Art

[0002] Pulverized coal boiler is a boiler equipment that uses pulverized coal as fuel. It has the advantages of rapid and complete combustion, large capacity, high efficiency, wide adaptability to coal types, and easy control and adjustment. The combustion characteristics of pulverized coal boiler are that the fuel enters the combustion chamber together with the air and burns in a suspended state;

[0003] The discharge port or feed port of the pulverized coal furnace needs to be installed with a fire-blocking door cast iron plate to seal the pulverized coal furnace and prevent the flame from coming out of the opening.

[0004] The inventor discovered the following defects during the operation of the specific embodiment:

[0005] When the cast iron plate of the fire damper is opened, since the cast iron plate of the fire damper is in direct contact with the flame or high temperature, the temperature of the cast iron plate of the fire damper will be high. The pulverized coal furnace needs to stop burning and the cast iron plate of the fire damper needs to be cooled down before the cast iron plate of the fire damper can be opened. Therefore, the cast iron plate of the fire damper cannot be opened at any time to clean the fuel waste inside.

[0006] It should be noted that the above contents belong to the technical cognition scope of the inventor. Since the technical contents in this field are vast and too complicated, the above contents of this application do not necessarily constitute prior art. Utility Model Content

[0007] 1. Technical problems to be solved by the utility model:

[0008] The utility model provides a fire-blocking door cast iron plate with strong sealing performance, which is used to solve the technical problems existing in the above-mentioned background technology.

[0009] 2. Technical solution:

[0010] To achieve the above-mentioned purpose, the technical solution provided by the utility model is as follows: a cast iron plate for a fire-blocking door with strong sealing performance, comprising a pulverized coal furnace wall, transmission screws are arranged on both sides of the pulverized coal furnace wall, a lifting sliding plate is arranged between the two transmission screws, top plates are arranged on both sides of the top of the lifting sliding plate, a rotating shaft is threadedly connected between the two top plates, cams are arranged on the outer walls on both sides of the rotating shaft, and a mounting groove is opened inside the lifting sliding plate;

[0011] The fire baffle is slidably connected to the inside of the mounting groove, connecting rods are arranged on both sides of the top of the fire baffle, a return spring is arranged at one end of the connecting rod, and the top of the fire baffle is slidably connected to the outer wall of the cam.

[0012] Furthermore, an inlet and outlet are provided inside the furnace wall of the pulverized coal furnace, and the inner wall of the inlet and outlet is in contact with the outer wall of the fire baffle.

[0013] Furthermore, guide grooves are provided on both sides of the top of the furnace wall of the pulverized coal furnace, and guide bars are provided on both sides of the bottom of the lifting sliding plate, and the guide bars are slidably connected to the guide grooves.

[0014] Furthermore, connecting strips are provided on the outer walls of both sides of the lifting sliding plate, and matching holes are provided inside the connecting strips, and the matching holes match with the transmission screw rod.

[0015] Furthermore, side plates are provided on both sides of the lifting sliding plate, and the top of the side plate is connected to one end of the return spring.

[0016] Furthermore, the inner wall of the fire baffle is provided with a fireproof layer, and the fireproof layer is made of a fire-resistant material.

[0017] 3. Beneficial effects:

[0018] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0019] The utility model can push the fire baffle to move inward by arranging a cam, so that the outer wall of the fire baffle fits with the inner wall of the inlet and outlet. When the inlet and outlet need to be opened, the cam is first rotated to make the short side of the cam fit with the outer wall of the fire baffle, and the outer wall of the fire baffle is separated from the inlet and outlet. Then the transmission screw drives the lifting sliding plate to move upward, so that the fire baffle and the inlet and outlet are firmly connected. After the rotating shaft is rotated by a wrench, the fire baffle can be opened at any time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0021] Figure 2 It is a three-dimensional cross-sectional structural schematic diagram of the utility model;

[0022] Figure 3 This is a schematic diagram of the three-dimensional structure of the lifting sliding plate of the utility model;

[0023] Figure 4 The utility model is a schematic diagram of the three-dimensional structure of the fire baffle.

[0024] Reference numerals:

[0025] 1. Pulverized coal furnace wall; 2. Inlet and outlet; 3. Guide groove; 4. Transmission screw; 5. Lifting and sliding plate; 6. Connecting strip; 7. Matching hole; 8. Guide strip; 9. Top plate; 10. Rotating shaft; 11. Cam; 12. Mounting groove; 13. Side plate; 14. Fire baffle; 15. Connecting rod; 16. Reset spring; 17. Fireproof layer. DETAILED DESCRIPTION

[0026] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "page", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship, are based on the orientation or position relationship 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", "provided with", "provided on" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example

[0030] See attached Figure 1-4A cast iron plate for a fire-blocking door with strong sealing performance, comprising a pulverized coal furnace wall 1, transmission screws 4 are arranged on both sides of the pulverized coal furnace wall 1, a lifting sliding plate 5 is arranged between the two transmission screws 4, top plates 9 are arranged on both sides of the top of the lifting sliding plate 5, a rotating shaft 10 is threadedly connected between the two top plates 9, cams 11 are arranged on the outer walls on both sides of the rotating shaft 10, and a mounting groove 12 is opened inside the lifting sliding plate 5;

[0031] The fire baffle 14 is slidably connected to the inside of the mounting groove 12 , connecting rods 15 are provided on both sides of the top of the fire baffle 14 , a return spring 16 is provided at one end of the connecting rod 15 , and the top of the fire baffle 14 is slidably connected to the outer wall of the cam 11 .

[0032] Furthermore, an inlet and outlet port 2 is opened inside the furnace wall 1 of the pulverized coal furnace, and the inner wall of the inlet and outlet port 2 is in contact with the outer wall of the fire baffle 14. After the inlet and outlet port 2 is in contact with the fire baffle 14, when the lifting sliding plate 5 drives the fire baffle 14 to move upward, the inlet and outlet port 2 and the fire baffle 14 are engaged to prevent the lifting sliding plate 5 from moving upward.

[0033] Furthermore, guide grooves 3 are provided on both sides of the top of the pulverized coal furnace wall 1, and guide bars 8 are provided on both sides of the bottom of the lifting sliding plate 5. The guide bars 8 are slidably connected to the guide grooves 3, and the bottom of the guide groove 3 is provided with an arc shape, so that the inner wall of the guide groove 3 is engaged with the outer wall of the guide bar 8, so that the guide bar 8 at the bottom of the lifting sliding plate 5 can only move along the direction of the guide groove 3.

[0034] Furthermore, connecting strips 6 are provided on the outer walls of both sides of the lifting sliding plate 5 , and matching holes 7 are provided inside the connecting strips 6 , and the matching holes 7 match with the transmission screw 4 .

[0035] Furthermore, side plates 13 are provided on both sides of the lifting sliding plate 5, and the top of the side plate 13 is connected to one end of the reset spring 16. The inner wall of the fire baffle 14 is provided with a fireproof layer 17. The fireproof layer 17 is made of refractory material. The refractory material mainly includes silica (silicon oxide), aluminum silicate, corundum magnesium, magnesium calcium, aluminum magnesium, magnesium silicon, carbon composite refractory material, zirconium refractory material, special refractory material, etc. When the short side of the cam 11 is in contact with the fire baffle 14, the reset spring 16 pulls the fire baffle 14 outward through the connecting rod 15 to separate the fire baffle 14 from the inlet and outlet 2.

[0036] The lifting and sliding plates 5 drive the fire baffles 14 to align with the inlet and outlet 2, and then the rotating shaft 10 is rotated by a wrench, so that the rotating shaft 10 drives the cam 11 to rotate, and the cam 11 pushes the fire baffle 14 to enter the inner wall of the inlet and outlet 2, and when the fire baffle 14 moves inward, the reset spring 16 is stretched by the connecting rod 15, thereby achieving the sealing of the inlet and outlet 2. When the inlet and outlet 2 needs to be opened, the rotating shaft 10 is rotated by a wrench, so that the rotating shaft 10 drives the cam 11 to rotate, and the short side of the cam 11 contacts the fire baffle 14, and the reset spring 16 pulls the fire baffle 14 outward through the connecting rod 15 to separate from the inlet and outlet 2, and then the rotating shaft 10 drives the lifting and sliding plates 5 to move upward, thereby achieving the opening of the inlet and outlet 2.

[0037] The above-described embodiments only express a certain implementation method of the utility model, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the patent of the utility model shall be based on the attached claims.

Claims

1. A cast iron plate for a fire-blocking door with strong sealing performance, characterized in that: A pulverized coal furnace wall (1), wherein transmission screws (4) are arranged on both sides of the pulverized coal furnace wall (1), a lifting sliding plate (5) is arranged between the two transmission screws (4), top plates (9) are arranged on both sides of the top of the lifting sliding plate (5), a rotating shaft (10) is threadedly connected between the two top plates (9), cams (11) are arranged on the outer walls of both sides of the rotating shaft (10), and a mounting groove (12) is opened inside the lifting sliding plate (5); A fire baffle (14), the fire baffle (14) being slidably connected to the inside of the mounting groove (12), connecting rods (15) being provided on both sides of the top of the fire baffle (14), a return spring (16) being provided at one end of the connecting rod (15), and the top of the fire baffle (14) being slidably connected to the outer wall of the cam (11).

2. The cast iron plate for a fire-blocking door with strong sealing performance according to claim 1, characterized in that: The pulverized coal furnace wall (1) is provided with an inlet and outlet (2), and the inner wall of the inlet and outlet (2) is in contact with the outer wall of the fire baffle (14).

3. The cast iron plate for a fire-blocking door with strong sealing performance according to claim 1, characterized in that: Guide grooves (3) are provided on both sides of the top of the pulverized coal furnace wall (1), and guide bars (8) are provided on both sides of the bottom of the lifting sliding plate (5), and the guide bars (8) are slidably connected to the guide grooves (3).

4. The cast iron plate for a fire-blocking door with strong sealing performance according to claim 1, characterized in that: The outer walls of both sides of the lifting sliding plate (5) are provided with connecting strips (6), and the interior of the connecting strips (6) is provided with matching holes (7), and the matching holes (7) are matched with the transmission screw rod (4).

5. The cast iron plate for a fire-blocking door with strong sealing performance according to claim 1, characterized in that: Side plates (13) are provided on both sides of the lifting sliding plate (5), and the top of the side plate (13) is connected to one end of a return spring (16).

6. The cast iron plate for a fire-blocking door with strong sealing performance according to claim 1, characterized in that: The inner wall of the fire baffle (14) is provided with a fireproof layer (17), and the fireproof layer (17) is made of a fire-resistant material.

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