Sintering machine sealing assembly and sintering machine

Abstract

The present invention belongs to the technical field of sintering machines, and in particular, relates to a sintering machine sealing assembly and a sintering machine. The sintering machine tire strip active pressure sealing assembly includes a tire strip seal, which is divided into a sealing seat and a tire strip sealing body in dynamic sealing cooperation. A tire strip fitting groove is provided on the left side wall of the sealing seat along the front-to-back direction, and a negative pressure short-circuit hole is provided on the sealing seat on the right side of the tire strip fitting groove. The air extraction end of the negative pressure short-circuit hole is communicated with the tire strip fitting groove; the tire strip sealing body includes a base plate, and a tire strip sealing plate with a groove structure is sealed and fixed on one side of the base plate. The tire strip sealing plate has elasticity, and a closed tire pressure chamber is formed between the groove structure part of the tire strip sealing plate and the base plate; the groove structure part of the tire strip sealing plate is embedded in the tire strip fitting groove, and the groove structure part of the tire strip sealing plate forms a sliding dynamic sealing cooperation along the tire strip fitting groove. The present invention has a simple structure, a small size, and a good sealing effect.

Description

Technical Field

[0001] The invention belongs to the technical field of sintering machines, and in particular relates to a sintering machine sealing component and a sintering machine. Background Art

[0002] In the metallurgical industry, sintering machines are the main equipment for producing sintered ore. In 2023, the total demand for sintered ore in the country will reach 1.4 billion tons, and the total output will be close to 1.4 billion tons. Sintering machines are the key core equipment for producing sintered ore.

[0003] The working principle of sintering machine is as follows Figure 8 As shown. The trolley is placed on the track via the wheels and the trolley continues to run along the track (the running direction is Figure 8 The sintering raw materials are loaded onto a sintering trolley (in the front-to-back direction). A bellows is located beneath the trolley. This trough-shaped structure, approximately 100m long and 4-6m wide, is equipped with baffles at both ends. The bellows is connected to the main exhaust fan via an air duct. The main exhaust fan creates a negative pressure of 10-20kPa within the bellows. This negative pressure allows ambient air to enter the bellows through the material surface. As this air passes through the material, it provides the raw materials with the oxygen they need for the sintering process.

[0004] From the working principle of the sintering machine, it can be seen that a good seal must be formed between the sintering trolley and the bellows. Otherwise, a large amount of air will enter the bellows from the joint surface of the sintering trolley and the bellows. The sintering raw materials on the trolley cannot obtain the air volume required to complete the sintering process, which not only affects the quality of the sintered ore, but also wastes the fan air volume and increases energy consumption.

[0005] The sintering machine's seals are divided into side seals and end seals. The side seals are used to seal the two sides of the bellows, each side of which is approximately 100 meters long. In the prior art, slideways are installed on both sides of the bellows. These slideways contact the sliders on both sides of the trolley's bottom, forming a slideway seal (this type of seal, which also provides a sealing effect during movement, is also called a sliding dynamic seal), thus forming the side seal. Furthermore, because the slideways are made of structural steel with high rigidity, and the sliders are also thick steel plates with high rigidity, due to the structural requirements for normal equipment operation, as well as processing and installation errors, the joint surface between the slideway and the slider cannot be completely aligned. A certain gap usually exists, which causes air leakage. In traditional technology, this air leakage directly enters the air leak, causing side air leakage in the sintering machine. The air leakage rate of prior art sintering machines is approximately 40%, of which the slideway seals contribute over 30%, resulting in a huge waste of energy.

[0006] If a second level of sealing is added to the above-mentioned prior art, air leakage can be greatly reduced. However, due to the small area near the slideway seal, the traditional sealing method is too large to be installed. Summary of the Invention

[0007] According to the deficiencies in the above prior art, the technical problem to be solved by the present invention is: to provide an active pressure-applying sealing component for the strip tire of a sintering machine, which has a simple structure, a small volume, and a good sealing effect.

[0008] The active pressure-applying sealing component for the strip tire of a sintering machine includes a strip tire seal. The strip tire seal is divided into a seal seat and a strip tire seal body that are in dynamic sealing fit. A strip tire fitting groove is formed in the left side wall of the seal seat in the front-back direction. A negative pressure short connection hole is formed in the seal seat on the right side of the strip tire fitting groove. The air extraction end of the negative pressure short connection hole communicates with the strip tire fitting groove.

[0009] The strip tire seal body includes a base plate. A strip tire seal plate with a groove-like structure is fixedly sealed on one side surface of the base plate. The strip tire seal plate has elastic ability. A closed tire pressure chamber is formed between the groove-like structure part of the strip tire seal plate and the base plate. The groove-like structure part of the strip tire seal plate is embedded in the strip tire fitting groove, and the groove-like structure part of the strip tire seal plate forms a sliding dynamic sealing fit along the strip tire fitting groove.

[0010] Further, both the strip tire fitting groove and the groove-like structure part of the strip tire seal plate are grooves with a trapezoidal structure.

[0011] Further, both the strip tire fitting groove and the groove-like structure part of the strip tire seal plate are grooves with an isosceles trapezoidal structure.

[0012] Further, the overall cross-section of the base plate is in a "factory" - shaped structure, and the overall cross-section of the strip tire seal plate is in a "5" - shaped structure. The hooked part of the "5" - shaped structure is the groove-like structure part of the strip tire seal plate. The overall cross-section of the base plate and the overall cross-section of the strip tire seal plate form a "6" - shaped structure.

[0013] Further, the overall cross-section of the base plate is in a "factory" - shaped structure, and the base plate and the groove-like structure part of the strip tire seal plate form a "6" - shaped structure as a whole.

[0014] Further, the internal pressure of the tire pressure chamber is preset to be not less than 5 kg / cm 2 of air pressure.

[0015] Further, the negative pressure short connection holes are several and are arranged at intervals in the front-back direction of the seal seat.

[0016] Further, the value range of the diameter d of the negative pressure short connection hole can be expressed as:

[0017]

[0018] In the formula, Q is the volume of the space at the bottom of the strip tire fitting groove when the groove-like structure part of the strip tire seal plate and the strip tire fitting groove are in dynamic sealing fit, and the unit is cm 3 ;

[0019] d is the diameter of the negative pressure short-circuit hole, in cm;

[0020] L is the length of the negative pressure short-circuit hole, in cm;

[0021] η is the viscosity of high temperature air, unit is kg / cm 2 ·s;

[0022] ΔP is the pressure difference between the peak pressure during pressure fluctuation and the pressure in the tire fitting groove when the negative pressure short-circuit hole is connected to negative pressure, and the unit is kg / cm 2 .

[0023] The present invention also provides a sintering machine, including a bellows, a trolley is horizontally installed on the bellows, a slide is installed on the top of the bellows, a sliding slider is installed on the slide, the slider is installed at the bottom of the trolley, the inside of the bellows is a negative pressure chamber, the top of the bellows on the inner side of the slide is installed with the above-mentioned sintering machine strip tire active pressure sealing assembly, the sealing seat is seal-mounted on the top of the bellows, the strip tire sealing body is seal-connected to the bottom of the trolley, and the air outlet end of the negative pressure short-circuit hole is connected to the negative pressure chamber.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] In the field of sintering machines, the present invention adds another sliding dynamic sealing technology on the basis of the sliding dynamic sealing cooperation between the original slide and the slider. This technology adopts the sliding dynamic sealing cooperation between the strip tire sealing body and the strip tire fitting groove. When sealing, the strip tire fitting groove generates negative pressure through the negative pressure short-circuit hole, thereby tightly fitting the strip tire sealing body and the strip tire fitting groove; in addition, the strip tire sealing body adopts a combination of a base plate and a strip tire sealing plate, and a tire pressure chamber is formed at the same time, so that the strip tire sealing plate has good elasticity and sufficient rigidity, providing structural guarantee for the effective sealing of the strip tire sealing plate and the strip tire fitting groove. The sintering machine strip tire active pressure sealing component in the present invention has a simple structure, a small size, and a good sealing effect.

[0026] When the present invention is applied to a sintering machine, combined with the sealing of the original designed slider and slideway, the sintering machine can achieve double-stage sealing, which can significantly improve the side sealing effect of the sintering machine, reduce air leakage, and lower energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings illustrate exemplary embodiments of the present disclosure and together with the description serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0028] Figure 1 This is the overall structure diagram of the active pressure double-stage seal of the tire;

[0029] Figure 2 This is the installation diagram of the active pressure double-stage seal of the tire;

[0030] Figure 3 This is the principle diagram of the active pressure sealing structure of the tire;

[0031] Figure 4 This is a diagram showing the relationship between the position of the tire sealant;

[0032] Figure 5 The mechanism of action of active pressure sealing technology for strip tires I;

[0033] Figure 6 The mechanism of action of active pressure sealing technology for tire strips II;

[0034] Figure 7 This is the relationship diagram of the diameter d of the negative pressure short-circuit hole;

[0035] Figure 8 This is a cross-sectional structural diagram of an existing sintering machine.

[0036] Figure markings: 1. Bellows; 2. Slide; 3. Slider; 4. Trolley; 5. Strip tire seal; 5.1. Low-pressure chamber; 5.2. Strip tire sealing body; 5.21. Base plate; 5.22. Tire pressure chamber; 5.23. Strip tire sealing plate; 5.3. Trolley fixing bolt; 5.4. Sealing seat fixing bolt; 5.5. Sealing seat; 5.6. Negative pressure short-circuit hole; 5.7. Strip tire mating groove; 6. Negative pressure chamber. DETAILED DESCRIPTION

[0037] The present disclosure will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the relevant content and are not intended to limit the present disclosure. It should also be noted that, for ease of description, only the portions relevant to the present disclosure are shown in the accompanying drawings.

[0038] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in the present disclosure may be combined with each other. The present disclosure will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0039] Example

[0040] The present embodiment describes a sintering machine strip tire active pressure sealing component, such as Figures 1 to 4 As shown, it includes a strip tire seal 5, which is divided into a sealing seat 5.5 and a strip tire sealing body 5.2 that are in dynamic sealing cooperation. A strip tire fitting groove 5.7 is provided on the left side wall of the sealing seat 5.5 along the front-to-back direction, and a negative pressure short-circuit hole 5.6 is provided on the sealing seat 5.5 on the right side of the strip tire fitting groove 5.7. The exhaust end of the negative pressure short-circuit hole 5.6 is communicated with the strip tire fitting groove 5.7;

[0041] The tire strip sealing body 5.2 includes a base plate 5.21, and a tire strip sealing plate 5.23 with a groove structure is sealed and fixed on one side of the base plate 5.21. The tire strip sealing plate 5.23 has elasticity, and a closed tire pressure chamber 5.22 is formed between the groove structure part of the tire strip sealing plate 5.23 and the base plate 5.21. When the tire pressure chamber 5.22 is formed, Figure 3 As shown, the lower end of the tire strip sealing plate 5.23 can be pressed into a trapezoidal groove, and the upper end of the tire strip sealing plate 5.23 is consistent in shape with the base plate 5.21. The base plate 5.21 and the tire strip sealing plate 5.23 fit together, and the front and rear ends are sealed with steel plates, thereby forming a tire pressure chamber 5.22 at the lower part; the groove-shaped structure part of the tire strip sealing plate 5.23 is embedded in the tire strip fitting groove 5.7, and the groove-shaped structure part of the tire strip sealing plate 5.23 forms a sliding dynamic seal along the tire strip fitting groove 5.7.

[0042] In order to achieve a better sliding sealing effect, the groove-like structure of the tire strip fitting groove 5.7 and the tire strip sealing plate 5.23 are both isosceles trapezoidal grooves. In actual application, the groove-like structure of the tire strip fitting groove 5.7 and the tire strip sealing plate 5.23 can also be ordinary trapezoidal grooves or "V"-shaped grooves.

[0043] like Figure 3 As shown, in this embodiment, the cross-section of the base plate 5.21 is in the shape of a "factory" as a whole, and the cross-section of the strip tire sealing plate 5.23 is in the shape of a "5" as a whole. The hook portion of the "5" shape is the groove-shaped structure portion of the strip tire sealing plate 5.23, and the cross-section of the base plate 5.21 and the cross-section of the strip tire sealing plate 5.23 constitute a "6"-shaped structure as a whole. In actual application, on the basis of the cross-section of the base plate 5.21 being in the shape of a "factory" as a whole, the groove-shaped structure portion of the base plate 5.21 and the strip tire sealing plate 5.23 can also be used to form a "6"-shaped structure as a whole. The structure of the base plate 5.21 is not limited to the "factory"-shaped structure, and can also be a plate or other shaped structure, as long as the needs are met. In this embodiment, the base plate 5.21 and the strip tire sealing plate 5.23 are both made of steel plates, wherein the elasticity of the base plate 5.21 is less than that of the strip tire sealing plate 5.23.

[0044] The tire pressure chamber 5.22 is preset to a pressure of not less than 5kg / cm 2 of air pressure.

[0045] The following is combined with Figure 5 、 Figure 6 The mechanism of the strip tire seal 5 is introduced.

[0046] like Figure 5As shown, when the base plate 5.21 is in a natural state after installation, its top position is O, and the structural characteristics of the base plate 5.21 will maintain this position unchanged, and this position provides a basic position for the tire strip sealing plate 5.23. When external conditions change and force the base plate 5.21 to move from point O to point O1, the base plate 5.21 will resist and generate a reaction force to maintain the position of point O unchanged. At this time, the base plate 5.21 applies a force to the tire strip sealing plate 5.23 to press the tire strip sealing plate 5.23 to the bottom of the tire strip fitting groove 5.7. This force can ensure that the tire strip sealing plate 5.23 maintains contact with the tire strip fitting groove; when external conditions change, such as Figure 6 As shown, when the base plate 5.21 is forced to move from point O to point O2, the base plate 5.21 will generate resistance and reaction force to maintain the position of point O unchanged. At this time, the base plate 5.21 applies force to the strip tire sealing plate 5.23 to pull the strip tire sealing plate 5.23 out from the bottom of the strip tire fitting groove 5.7. This force can partially offset the negative pressure at the bottom of the strip tire fitting groove 5.7, ensuring that the strip tire sealing plate 5.23 and the strip tire fitting groove 5.7 are not over-pressed and unable to move.

[0047] Tire pressure chamber 5.22 is not less than 5kg / cm 2 The air pressure makes the strip tire sealing plate 5.23 have both good elasticity and sufficient rigidity, providing structural guarantee for the effective sealing of the strip tire sealing plate 5.23 and the strip tire fitting groove 5.7.

[0048] This embodiment also provides a sintering machine, such as Figure 1 As shown, it includes a bellows 1, a trolley 4 is horizontally mounted on the bellows 1, a slide 2 is mounted on the top of the bellows 1, a slider 3 is mounted on the slide 2 and slides forward and backward with the slider, the slider 3 is mounted on the bottom of the trolley 4, and a negative pressure chamber 6 is inside the bellows 1;

[0049] like Figure 4 As shown, the top of the bellows 1 inside the slide 2 is installed with the sintering machine tire active pressure sealing assembly described in this embodiment, and the inner side of the slide 2 is as shown. Figure 2 The right side of the slide 2 shown is equivalent to two sets of sintering machine strip tire active pressure sealing components located between the two slides 2. The use of this section of technology is convenient for operation and has a good sealing effect. In actual installation, the sintering machine strip tire active pressure sealing components can also be installed on the outside of the slide 2. The installation method is the same as the inner installation, but the installation position is changed. Figure 2 As shown, the sealing seat 5.5 is sealed and installed on the top of the bellows 1 through the sealing seat fixing bolt 5.4, the tire sealing body 5.2 is sealed and connected to the bottom of the trolley 4 through the trolley fixing bolt 5.3, and the air outlet end of the negative pressure short-circuit hole 5.6 is connected to the negative pressure chamber 6 when connected, and can also be connected to the exhaust outlet of the bellows 1 through a pipeline.

[0050] The sintering machine provided in this embodiment is only equipped with the sintering machine strip tire active pressure sealing assembly on the basis of the existing sintering machine technology. Other related technical solutions can adopt the existing technology. There are several trolleys 4 in the existing technology. This embodiment only takes out one trolley 4 to illustrate the installation method of the sintering machine strip tire active pressure sealing assembly. In actual use, for all trolleys 4 that need to be exposed to wind, the sealing seat 5.5 can also be a whole structure. The strip tire sealing body 5.2 is the same in number as the trolleys 4, and its width is consistent with the width of the trolley 4.

[0051] In this embodiment, the number of trolleys 4 corresponds to the number of sets of active pressure sealing components for the sintering machine strip tires; in other words, one trolley 4 corresponds to one sealing seat 5.5 and one strip tire sealing body 5.2. Usually, all trolleys 4 circulate in a ring around the bellows 1, with the air intake of the trolley 4 facing the inside of the ring, such as Figure 1 The upper surface of the bellows 1 is the wind receiving surface.

[0052] In this embodiment, the short-circuit hole 5.6 is used to transfer the negative pressure in the negative pressure chamber 6 to the strip tire interlocking groove 5.7 to actively apply pressure to the strip tire sealing plate 5.23. The negative pressure in the strip tire interlocking groove 5.7 needs to be kept stable to ensure a continuous and good seal between the strip tire sealing plate 5.23 and the strip tire interlocking groove 5.7. Since the size of the bellows 1 is particularly large, with a length of more than 100m, a width of 5 to 6m, a height of 5m, and 25 to 35 exhaust ports along the length, it is difficult to ensure uniform pressure everywhere in the negative pressure chamber 6, and local pressure fluctuations frequently occur. The pressure fluctuations in the negative pressure chamber 6 cannot be transferred to the strip tire interlocking groove 5.7, otherwise it will affect the sealing effect between the strip tire sealing plate 5.23 and the strip tire interlocking groove 5.7.

[0053] Correctly setting the diameter and number of the negative pressure short-circuit holes 5.6 can isolate the pressure fluctuations in the negative pressure chamber 6 from being transmitted to the tire fitting groove 5.7. In this embodiment, each set of tire seals 5.2 is provided with a negative pressure short-circuit hole. The conditions for isolating the pressure fluctuations in the negative pressure chamber 6 are:

[0054] now that

[0055] Where Q is the volume of the bottom space of the strip tire fitting groove 5.7 when the groove structure of the strip tire sealing plate 5.23 is in dynamic sealing cooperation with the strip tire fitting groove 5.7, and the unit is cm 3 ; q is the pressure transmission speed of the negative pressure short-circuit hole 5.6. The value of q is:

[0056]

[0057] It is concluded that the range of values ​​of the diameter d of the negative pressure short-circuit hole 5.6 can be expressed as:

[0058]

[0059] Where d is the diameter of the negative pressure short-circuit hole 5.6, in cm; Figure 7 shown.

[0060] L is the length of the negative pressure short-circuit hole 5.6, in cm; Figure 7 shown.

[0061] η is the viscosity of high temperature air, unit is kg / cm 2 ·s;

[0062] ΔP is the pressure difference between the peak pressure of the pressure fluctuation when the negative pressure short-circuit hole 5.6 is connected to the negative pressure and the pressure in the tire fitting groove 5.7, the unit is kg / cm 2 .

[0063] When the diameter of the negative pressure short-circuit hole 5.6 meets the value range of the above formula, the negative pressure in the strip tire fitting groove 5.7 can be maintained stable and not fluctuate, thereby further maintaining a long-term stable seal between the strip tire sealing plate 5.23 and the strip tire fitting groove 5.7, ensuring a good sealing effect.

[0064] In this embodiment, the negative pressure short-circuit holes 5.6 may be multiple and arranged at intervals along the front-to-back direction of the sealing seat 5.5.

[0065] Under the design of this embodiment, the air leakage generated by the slideway 2 and the slider 3 cannot directly enter the negative pressure chamber 6, but first enters the negative pressure chamber 6. Figure 2 In the low-pressure chamber 5.1 shown, only the part that passes through the strip seal 5 from the low-pressure chamber 5.1 and enters the wind box can form substantial air leakage, and the part that stays in the low-pressure chamber 5.1 does not form substantial air leakage, thereby reducing air leakage of the sintering machine.

[0066] Generally speaking, in the present embodiment, the sintering machine tire strip active pressure sealing assembly is in the working state, and the base plate 5.21 of the tire strip sealing body 5.2 provides a fixed position for the tire strip sealing plate 5.23, so that the tire strip sealing plate 5.23 and the tire strip interlocking groove 5.7 are nested with each other and slide in the tire strip interlocking groove 5.7. The negative pressure short-circuit hole 5.6 transmits the negative pressure inside the negative pressure bin 6 to the bottom of the tire strip interlocking groove 5.7. The negative pressure at the bottom of the tire strip interlocking groove 5.7 forces the tire strip sealing plate 5.23 to be pressed against the tire strip interlocking groove 5.7, thereby creating a tight fit between the joint surface of the tire strip sealing plate 5.23 and the tire strip interlocking groove 5.7, forming a good seal, and preventing the gas in the low-pressure bin 5.1 from entering the negative pressure bin 6. The air pressure in the tire pressure chamber 5.22 increases the reliability between the joint surface of the tire strip sealing plate 5.23 and the tire strip interlocking groove 5.7. Due to the supporting effect of the base plate 5.21, the strip tire sealing plate 5.23 is not excessively pressed into the strip tire fitting groove 5.7, so as to ensure that the strip tire sealing plate 5.23 slides smoothly in the strip tire fitting groove 5.7.

[0067] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments / methods or examples. In addition, those skilled in the art may combine and combine different embodiments / methods or examples described in this specification and the features of different embodiments / methods or examples, unless they are contradictory.

[0068] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0069] Those skilled in the art will appreciate that the above embodiments are merely intended to clearly illustrate the present disclosure and are not intended to limit the scope of the present disclosure. Other changes or modifications may be made based on the above disclosure, and such changes or modifications are still within the scope of the present disclosure.

Claims

1. A sintering machine strip tire active pressure sealing assembly, comprising a strip tire seal (5), the strip tire seal (5) being divided into a sealing seat (5.5) and a strip tire sealing body (5.2) in dynamic sealing cooperation, characterized in that: A strip tire fitting groove (5.7) is formed in the left side wall of the sealing seat (5.5) along the front-back direction. A negative pressure short connection hole (5.6) is formed in the sealing seat (5.5) on the right side of the strip tire fitting groove (5.7). The air extraction end of the negative pressure short connection hole (5.6) is communicated with the strip tire fitting groove (5.7). The strip tire sealing body (5.2) includes a base plate (5.21). A strip tire sealing plate (5.23) with a groove-like structure is fixedly sealed on one side surface of the base plate (5.21). The strip tire sealing plate (5.23) has elastic ability. A closed tire pressure chamber (5.22) is formed between the groove-like structure part of the strip tire sealing plate (5.23) and the base plate (5.21). The groove-like structure part of the strip tire sealing plate (5.23) is embedded in the strip tire fitting groove (5.7), and the groove-like structure part of the strip tire sealing plate (5.23) forms a sliding dynamic seal fit along the strip tire fitting groove (5.7).

2. The active pressure sealing assembly for sintering machine strips according to claim 1, characterized in that: Both the strip tire fitting groove (5.7) and the groove-like structure part of the strip tire sealing plate (5.23) are grooves with a trapezoidal structure.

3. The active pressure sealing assembly for sintering machine strips according to claim 2, characterized in that: Both the strip tire fitting groove (5.7) and the groove-like structure part of the strip tire sealing plate (5.23) are grooves with an isosceles trapezoidal structure.

4. The active pressure sealing assembly for sintering machine strips according to claim 1, characterized in that: The cross-section of the base plate (5.21) is integrally in an "L" - shaped structure, and the cross-section of the strip tire sealing plate (5.23) is integrally in a "5" - shaped structure. The hooked part of the "5" - shaped structure is the groove-like structure part of the strip tire sealing plate (5.23). The cross-section of the base plate (5.21) and the cross-section of the strip tire sealing plate (5.23) integrally form a "6" - shaped structure.

5. The active pressure sealing assembly for sintering machine strips according to claim 1, characterized in that: The cross-section of the base plate (5.21) is integrally in an "L" - shaped structure, and the base plate (5.21) and the groove-like structure part of the strip tire sealing plate (5.23) integrally form a "6" - shaped structure.

6. The active pressure sealing assembly for sintering machine strips according to claim 1, characterized in that: The tire pressure chamber (5.22) is preset to have a pressure of not less than 5kg / cm 2 of air pressure.

7. The active pressure sealing assembly for sintering machine strips according to claim 1, characterized in that:

8. The active pressure sealing assembly for sintering machine strips according to claim 1, characterized in that: The negative pressure short connection holes (5.6) are several and are arranged at intervals along the front-back direction of the sealing seat (5.5). Where Q is the volume of the bottom space of the strip tire fitting groove (5.7) when the groove structure of the strip tire sealing plate (5.23) is in dynamic sealing cooperation with the strip tire fitting groove (5.7), and the unit is cm 3 ; The diameter d of the negative pressure short connection hole (5.6) has a value range that can be expressed as: d is the diameter of the negative pressure short connection hole (5.6), with the unit of cm; η is the viscosity of high temperature air, unit is kg / cm 2 ·s; ΔP is the pressure difference between the peak pressure of the pressure fluctuation when the negative pressure short-circuit hole (5.6) is connected to the negative pressure and the pressure in the tire fitting groove (5.7), the unit is kg / cm 2 .

9. A sintering machine, comprising a bellows (1), a trolley (4) being transversely mounted on the bellows (1), a slideway (2) being mounted on the top of each bellows (1), a sliding block (3) being mounted on the slideway (2), the slider (3) being mounted on the bottom of the trolley (4), and a negative pressure chamber (6) being provided inside the bellows (1), characterized in that: L is the length of the negative pressure short connection hole (5.6), with the unit of cm; The sintering machine strip tire active pressing sealing assembly according to any one of claims 1 to 8 is installed on the top of the air box (1) inside the slideway (2). The sealing seat (5.5) is sealed and installed on the top of the air box (1). The strip tire sealing body (5.2) is sealed and connected to the bottom of the trolley (4). The air outlet end of the negative pressure short connection hole (5.6) is connected and communicated with the negative pressure chamber (6).

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