A zero leakage air regulating valve

Abstract

The utility model belongs to the field of dust removal, and specifically relates to a zero-leakage air regulating valve, comprising a valve body, a valve plate is arranged in the middle of the valve body, and hollow air inlet end seats and exhaust end seats are symmetrically installed at both ends; a through axial hole is opened in the middle of the valve body, and a rotating shaft connected to the valve plate is passed through the axial hole; a section of the outer sleeve of the rotating shaft passing through the outer side of the valve body is provided with a valve seat; symmetrical valve seats are arranged on the outer side of the valve body, a sealing structure is arranged at the position where the rotating shaft is located in the inner cavity of the valve seat, a packing group is clamped in the gap between the shaft shell and the rotating shaft, the packing group is packing with sealing properties arranged at intervals, and the pressure plate group can be laterally limited so that each packing is tightly attached, the contact point between the rotating shaft and the valve body is internally sealed, and the valve seat is cooperated for external sealing, so as to improve the self-sealing property of the valve body, prevent smoke leakage, simplify the weight of the valve plate, which can meet the use requirements of the equipment and save costs to the greatest extent.

Description

Technical Field

[0001] The utility model relates to the field of dust removal, in particular to a zero-leakage air regulating valve. Background Art

[0002] The sealing of the air regulating valve includes two aspects, one is the sealing of the valve body itself, and the other is the sealing of the valve body when it is closed (i.e. the isolation capacity of the valve). Conventional air regulating valves either do well in both aspects or do poorly in both aspects. The better the sealing of the air regulating valve, the higher the cost. For the dust removal industry, the requirements for these two aspects of the air regulating valve are not too high, so in order to reduce costs, the sealing of the dust collector air regulating valve is relatively poor.

[0003] Due to the complex nature of flue gas in the hazardous waste industry, bag dust collectors do not have high requirements for the isolation capacity when the valve body is closed, but have high requirements for the sealing of the valve body itself. In the conventional structure, the dust collector flue gas has high temperature and high dust content, which can easily cause damage to the sealing bearing. Leakage of the valve body itself can easily lead to valve body corrosion and ash blockage in the flue downstream of the valve body. The existing air regulating valves are too costly to take these problems into consideration and are not suitable for promotion and use. Utility Model Content

[0004] (I) Purpose of the utility model

[0005] In order to solve the technical problems existing in the background technology, the utility model proposes a zero-leakage air regulating valve, which has the characteristics of simple structure and stable sealing.

[0006] (II) Technical solution

[0007] In order to solve the above technical problems, the utility model provides a zero-leakage air regulating valve, comprising a valve body, a valve plate is arranged in the middle of the valve body, and hollow air inlet end seats and air exhaust end seats are symmetrically installed at both ends;

[0008] A through shaft hole is provided in the middle of the valve body, and a rotating shaft connected to the valve plate passes through the shaft hole;

[0009] The shaft passes through a section of the outside of the valve body and is sleeved with a valve seat, the valve seat is internally provided with a packing group sleeved on the shaft and the end surface of the valve body, the outer wall of the packing group is sleeved with a shaft shell, and the upper part of the packing group and the shaft shell is provided with a pressure plate group sleeved on the outer periphery of the shaft;

[0010] The rotating shaft is sleeved with a bearing group attached to the side wall of the valve seat, and a handle is formed at the far end. The handle and the valve plate rotate synchronously.

[0011] Preferably, the valve plate divides the valve body into two cavities, and the two cavities respectively cooperate with the air inlet end seat and the air exhaust end seat.

[0012] Preferably, the inner diameter of the shaft housing is at least 2 mm larger than the outer diameter of the rotating shaft.

[0013] Preferably, the combination of the packing group, the shaft housing and the pressure plate group is a sealing structure, and the combination of the valve seat, the bearing group and the rotating shaft is a shaft fixing structure.

[0014] Preferably, the handle and the valve seat are provided with a first limit hole and a second limit hole, and a limit bolt rod passes through both.

[0015] Preferably, when the valve plate is located in the middle of the valve body to separate the cavity, the first limiting hole and the second limiting hole are penetrated by limiting bolt rods;

[0016] On the contrary, the limiting bolt rod is separated from the second limiting hole formed on the valve seat.

[0017] The above technical scheme of the utility model has the following beneficial technical effects: a symmetrical valve seat is arranged on the outside of the valve body, a sealing structure is arranged at the position where the rotating shaft is located in the inner cavity of the valve seat, a packing group is clamped in the gap between the shaft housing and the rotating shaft, the packing group is packings with sealing properties arranged at intervals, and the pressure plate group can be laterally limited so that each packing is tightly attached, the contact point between the rotating shaft and the valve body is internally sealed, and the valve seat is cooperated for external sealing, so as to improve the self-sealing of the valve body, prevent smoke leakage, simplify the weight of the valve plate, which can meet the use requirements of the equipment and save costs to the greatest extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0020] Figure 3 It is a schematic diagram of the valve plate rotation structure of the utility model.

[0021] Reference numerals:

[0022] 1. Valve body; 2. Valve plate; 3. Air inlet end seat; 4. Air exhaust end seat; 5. Valve seat; 6. Bearing assembly; 7. Rotating shaft; 8. Handle; 9. First limiting hole; 10. Second limiting hole; 11. Limit bolt rod; 12. Packing assembly; 13. Shaft housing; 14. Pressure plate assembly. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0024] like Figure 1-3 As shown, the utility model proposes a zero leakage air regulating valve, including a valve body 1, a valve plate 2 is arranged in the middle of the valve body 1, the structure of the valve plate 2 is simplified to appropriately reduce its isolation capacity, the valve plate 2 is directly made of steel plate, the reinforcing ribs on the original valve plate are removed, and the production cost is reduced.

[0025] The two ends of the valve body 1 are symmetrically mounted with a hollow air inlet end seat 3 and an air outlet end seat 4;

[0026] A through shaft hole is provided in the middle of the valve body 1, and a rotating shaft 7 connected to the valve plate 2 passes through the shaft hole;

[0027] The rotating shaft 7 passes through a section of the outer side of the valve body 1 and is sleeved with a valve seat 5. The valve seat 5 has a packing group 12 sleeved on the rotating shaft 7 and the end surface of the valve body 1. The outer wall of the packing group 12 is sleeved with a shaft shell 13. The upper part of the packing group 12 and the shaft shell 13 is provided with a pressure plate group 14 sleeved on the outer periphery of the rotating shaft 7.

[0028] A bearing assembly 6 attached to the side wall of the valve seat 5 is sleeved on the rotating shaft 7, and a handle 8 is formed at the far end. The handle 8 and the valve plate 2 rotate synchronously.

[0029] It should be noted that:

[0030] 1. The valve plate 2 separates the valve body 1 into an air inlet cavity and an air exhaust cavity. The air inlet cavity cooperates with the air inlet end seat, and the air exhaust cavity cooperates with the discharge end seat. When the two cavities need to be separated, the valve plate 2 is perpendicular to the upper and lower ends of the valve body 1 to separate the two cavities.

[0031] 2. To ensure that the shaft can be rotated manually, the inner diameter of the shaft housing 13 is at least 2 mm larger than the outer diameter of the shaft 7, ensuring that the shaft 7 can be rotated freely, but this also makes leakage easy to occur here.

[0032] In this embodiment, a symmetrical valve seat 5 is arranged on the outside of the valve body 1. Since leakage is prone to occur at the connection between the valve seat 2 and the valve body 1, a sealing structure is arranged at the position where the rotating shaft is located in the inner cavity of the valve seat 2. A packing group 12 is clamped in the gap between the shaft housing 13 and the rotating shaft 7. The packing group 12 is a packing with sealing arranged at intervals, and the pressure plate group 13 can be laterally limited so that each packing is closely attached, so that the contact point between the rotating shaft 7 and the valve body 1 is internally sealed, and the valve seat 5 is cooperated to perform external sealing;

[0033] The external shaft fixing structure is realized by a bearing assembly 6 disposed outside the valve seat 5 , thereby ensuring stable rotation of the rotating shaft 7 .

[0034] like Figure 1 and Figure 3 As shown, the handle 8 and the valve seat 5 are provided with a first limit hole 9 and a second limit hole 10 which are connected to each other, and a limit bolt rod 11 passes through both.

[0035] It can be understood that when the valve plate 2 is located in the middle of the valve body 1 to separate the cavities, the first limiting hole 9 and the second limiting hole 10 are penetrated by the limiting bolt rod 11, and the limiting bolt rod 11 realizes the locking of the rotation position of the handle 8, and limits the valve plate 1 to the position perpendicular to the valve body 1 to separate the two cavities;

[0036] On the contrary, the limiting bolt rod 11 is separated from the second limiting hole 10 provided on the valve seat 5. At this time, the valve plate 1 can be pushed manually, and the air inlet cavity and the air exhaust cavity are combined into a valve channel for transmitting smoke.

[0037] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or the equivalent forms of such scope and boundaries.

Claims

1. A zero-leakage air regulating valve, characterized in that: It comprises a valve body (1), a valve plate (2) is arranged in the middle of the valve body (1), and hollow air inlet end seats (3) and air outlet end seats (4) are symmetrically installed at both ends; A through axial hole is provided in the middle of the valve body (1), and a rotating shaft (7) connected to the valve plate (2) passes through the axial hole; The rotating shaft (7) passes through a section of the outer side of the valve body (1) and is sleeved with a valve seat (5); the valve seat (5) is internally provided with a packing group (12) sleeved on the rotating shaft (7) and the end surface of the valve body (1); the outer wall of the packing group (12) is sleeved with a shaft shell (13); the upper parts of the packing group (12) and the shaft shell (13) are provided with a pressure plate group (14) sleeved on the outer periphery of the rotating shaft (7); The rotating shaft (7) is sleeved with a bearing group (6) attached to the side wall of the valve seat (5), and a handle (8) is formed at the far end. The handle (8) and the valve plate (2) rotate synchronously.

2. A zero-leakage air regulating valve according to claim 1, characterized in that: The valve plate (2) divides the valve body (1) into two cavities, and the two cavities respectively cooperate with the air inlet end seat (3) and the air outlet end seat (4).

3. A zero-leakage air regulating valve according to claim 1, characterized in that: The inner diameter of the shaft housing (13) is at least 2 mm greater than the outer diameter of the rotating shaft (7).

4. A zero-leakage air regulating valve according to claim 1, characterized in that: The combination of the packing group (12), the shaft housing (13) and the pressure plate group (14) is a sealing structure, and the combination of the valve seat (5), the bearing group (6) and the rotating shaft (7) is a shaft fixing structure.

5. A zero-leakage air regulating valve according to claim 1, characterized in that: The handle (8) and the valve seat (5) are provided with a first limit hole (9) and a second limit hole (10) which are connected to each other, and a limit bolt rod (11) passes through both.

6. A zero-leakage air regulating valve according to claim 5, characterized in that: When the valve plate (2) is located in the middle of the valve body (1) to separate the cavity, the first limiting hole (9) and the second limiting hole (10) are penetrated by limiting bolt rods (11); On the contrary, the limiting bolt rod (11) is separated from the second limiting hole (10) provided on the valve seat (5).

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