Novel ash deposition prevention sealing valve structure

Abstract

The utility model belongs to the technical field of valves, and particularly relates to a novel ash deposition prevention sealing valve structure. The check valve comprises a valve body; the two valve plates are arranged in the valve body, and the two valve plates rotate relatively; when the two valve plates are closed, the middle is high and the two sides are low. The utility model is used for solving the technical problem that the existing valve is easy to fail due to excessive accumulated dust in a pipeline containing smoke dust.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves, and in particular relates to a novel dust accumulation-proof sealing valve structure. Background Art

[0002] When the valve is used in a pipeline containing a large amount of smoke and dust, the valve is placed horizontally, and the valve plate in the prior art is also in a horizontal state. Therefore, when the valve is closed for a long time, a large amount of dust will accumulate on the valve, and the dust will press on the valve plate. The more the dust accumulates, the more two situations will occur. First, the weight of the dust is within the bearing range of the valve plate, and the dust will increase the weight of the valve plate, making it difficult for the opening and closing mechanism to push the valve plate; second, the weight of the dust exceeds the bearing range of the valve plate and the dust falls on the valve plate unevenly, the valve plate will lose control and flip, causing the dust to fall into the pipeline at an inappropriate time, destroying the sealing of the valve. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a novel anti-dust accumulation sealing valve structure for solving the technical problem that the existing valves are easily ineffective due to excessive dust accumulation in pipelines containing smoke and dust.

[0004] The utility model solves the above technical problems with the following technical solutions: A new anti-dust sealing valve structure, comprising:

[0005] Valve body;

[0006] Two valve plates, the two valve plates are arranged in the valve body;

[0007] When the two valve plates are closed, the middle is high and the two sides are low;

[0008] The two valve plates are driven by a connecting rod driving mechanism so that the two valve plates rotate relative to each other. The connecting rod driving mechanism includes three cranks and two connecting rods. The three cranks are respectively arranged on the two valve plate shafts and the driving shaft. The two connecting rods are divided into a first connecting rod and a second connecting rod. The first connecting rod connects the crank on the driving shaft and the crank on the right valve plate shaft. The crank on the right valve plate shaft is connected to the crank on the left valve plate shaft through the second connecting rod.

[0009] The two valve plates of the utility model are in an opposing open form, and in a closed state, the valve plates are in a "human" shape, which will guide the accumulated dust to accumulate unevenly on the top of the valve plates, with less in the middle and more on both sides. This saves effort when opening, and the valve plates are easier to open. When the accumulated dust is large and can cover the entire valve plate, the accumulated dust will press the entire valve plate downward, and the "human" shape will become tighter and tighter, providing better sealing.

[0010] Furthermore: the angle between the valve plate and the horizontal plane ranges from 5° to 10°.

[0011] The beneficial effects of adopting this step are: if the angle between the valve plate and the horizontal plane is too small, the slope of the valve plate is not enough, and the accumulated dust cannot be guided to the outside, resulting in a gravity difference, which does not achieve the effect of saving effort; if the angle between the valve plate and the horizontal plane is too large, the center of gravity of the valve plates at both ends of the rotating shaft will shift, which can easily damage the sealing.

[0012] Furthermore: the angle between the valve plate and the horizontal plane is 8°.

[0013] The beneficial effect of adopting this step: the 8° angle is calculated and tested, and can take into account both guiding dust accumulation and maintaining sealing.

[0014] Furthermore: a sealing rib is also provided on the outer side of the upper end surface of the valve plate;

[0015] A sealing strip is arranged on the inner top end of the valve plate.

[0016] The beneficial effect of adopting this step is that the sealing rib and the sealing strip further enhance the sealing effect.

[0017] Furthermore: the sealing rib and the sealing strip are made of flexible materials.

[0018] The beneficial effects of adopting this step are: the flexible material is deformable, and the sealing effect and environmental adaptability effect are better.

[0019] The beneficial effects of the utility model are:

[0020] 1. By setting the valve plate in the shape of a "human", the valve can guide the dust accumulation to form a gravity difference, which saves effort when opening the valve;

[0021] 2. When the dust accumulation is serious, the "human" shaped valve plate can provide stronger support force and maintain sealing performance under the force when a large amount of dust is regarded as a whole downward pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic diagram of a novel dust-proof sealing valve structure provided by the utility model;

[0024] Figure 2 A schematic diagram of a novel dust-proof sealing valve structure provided by the utility model without a connecting rod driving mechanism;

[0025] Figure 3 for Figure 1 A top view of

[0026] Figure 4 The utility model provides a new type of dust-proof sealing valve structure for application.

[0027] Reference numerals:

[0028] 1-valve body; 2-valve plate; 3-connecting rod drive mechanism; 4-dust accumulation;

[0029] 21- Sealing rib; 22- Sealing strip.

[0030] The hollow arrow in the figure indicates the flow direction of the dust-containing medium, and the arc arrow indicates the opening direction of the valve plate. DETAILED DESCRIPTION

[0031] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0032] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.

[0033] Example

[0034] like Figure 1~Figure 4 As shown, the utility model provides a new dust-proof sealing valve structure, comprising:

[0035] Valve body 1;

[0036] Two valve plates 2, the two valve plates 2 are arranged in the valve body 1;

[0037] When the two valve plates 2 are closed, the middle is high and the two sides are low;

[0038] The two valve plates 2 are driven by a connecting rod driving mechanism 3 so that the two valve plates 2 rotate relative to each other. The connecting rod driving mechanism 3 includes three cranks and two connecting rods. The three cranks are respectively arranged on two valve plate shafts and a driving shaft. The two connecting rods are divided into a first connecting rod and a second connecting rod. The first connecting rod connects the crank on the driving shaft and the crank on the right valve plate shaft. The crank on the right valve plate shaft is connected to the crank on the left valve plate shaft through the second connecting rod.

[0039] The two valve plates 2 of the utility model are in an open form, and the valve plates 2 are in a "human" shape when they are closed, which will guide the dust accumulation 4 to accumulate unevenly on the top of the valve plates 2, with less in the middle and more on both sides. This saves effort when opening and the valve plates 2 are easier to open; when the dust accumulation is large and can cover the entire valve plate 2, the dust accumulation will press the entire valve plate 2 downward, and the "human" shape will become tighter and tighter, providing better sealing.

[0040] Based on the above technical solution, the angle between the valve plate 2 and the horizontal plane is in the range of 5° to 10°.

[0041] If the angle between the valve plate 2 and the horizontal plane is too small, the slope of the valve plate 2 is insufficient, and the accumulated dust cannot be guided to the outside, resulting in a gravity difference, which does not achieve the effect of saving effort; if the angle between the valve plate 2 and the horizontal plane is too large, the center of gravity of the valve plate 2 at both ends of the rotating shaft will shift, which can easily destroy the sealing.

[0042] On the basis of the above technical solution, the angle between the valve plate 2 and the horizontal plane is 8°.

[0043] The 8° angle is the result of calculations and experiments, and is able to balance guiding dust accumulation and maintaining sealing.

[0044] On the basis of the above technical solution, a sealing rib 21 is further provided on the outer side of the upper end surface of the valve plate 2;

[0045] A sealing strip 22 is provided at the inner top end of the valve plate 2 .

[0046] The sealing rib 21 and the sealing strip 22 further enhance the sealing effect.

[0047] On the basis of the above technical solution, the sealing rib 21 and the sealing strip 22 are made of flexible materials.

[0048] Flexible materials (including rubber, polyurethane, etc.) are deformable and have better sealing and environmental adaptability.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A new anti-dust sealing valve structure, characterized in that: include: Valve body; Two valve plates, the two valve plates are arranged in the valve body; When the two valve plates are closed, the middle is high and the two sides are low; The two valve plates are driven by a connecting rod driving mechanism so that the two valve plates rotate relative to each other. The connecting rod driving mechanism includes three cranks and two connecting rods. The three cranks are respectively arranged on the two valve plate shafts and the driving shaft. The two connecting rods are divided into a first connecting rod and a second connecting rod. The first connecting rod connects the crank on the driving shaft and the crank on the right valve plate shaft. The crank on the right valve plate shaft is connected to the crank on the left valve plate shaft through the second connecting rod.

2. The novel anti-dust sealing valve structure according to claim 1 is characterized in that: The angle between the valve plate and the horizontal plane ranges from 5° to 10°.

3. The novel anti-dust sealing valve structure according to claim 1 is characterized in that: The included angle between the valve plate and the horizontal plane is 8°.

4. The novel anti-dust sealing valve structure according to claim 1 is characterized in that: A sealing rib is also provided on the outer side of the upper end surface of the valve plate; A sealing strip is arranged on the inner top end of the valve plate.

5. The novel anti-dust sealing valve structure according to claim 4 is characterized in that: The sealing rib and the sealing strip are made of flexible materials.

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