Flap valve sealing sleeve

Abstract

The utility model discloses a flap valve sealing sleeve, and relates to the technical field of sealing sleeves. The valve comprises a valve body and a plurality of first bearings, two valve plates are arranged in the valve body, rotating shafts are arranged at the two ends of each valve plate, a plurality of T-shaped holes are formed in the surface of the valve body, and the rotating shafts are rotationally inserted into the inner walls of the T-shaped holes through the first bearings respectively. When the valve is used, a user drives the rotating shaft to rotate to drive the valve plate to rotate, so that the conduction state of the two ends of the valve body is adjusted, the rotating shaft can drive the rotating sleeve to rotate through the threaded groove in the surface in the rotating process of the T-shaped hole, and the rotating sleeve is in threaded connection with the rotating shaft, so that the valve plate can be driven to rotate. An asbestos type flexible compression shaft seal is adopted before metal sealing is achieved, air leakage and material leakage at the position of a rotating shaft can be caused after a long time, the purpose of zero air leakage is achieved, and the practicability of the device is fully embodied.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing sleeves, in particular to a sealing sleeve for a flap valve. Background Art

[0002] A flap valve is a regulating valve with a simple structure. It can be used for the on-off control of low-pressure pipeline media. A butterfly valve refers to a valve with a closing part (valve disc or butterfly plate) as a disc, which rotates around the valve axis to achieve opening and closing. The valve plate of the flap valve automatically opens under the action of the gravity of the material. After the material falls, the counterweight lever system automatically resets the valve plate to prevent wild wind from blowing in, thereby completing the material transportation. There are mainly single-door and double-door flap valves. The double-layer flap valve mainly uses the opening and closing of the upper and lower valves at different times to ensure that there is always a layer of valve plate in the middle of the equipment in a closed and isolated state to prevent air crossflow. If it is under positive pressure transportation, the pneumatic double-layer air lock valve can also play a balancing and boosting valve flow-assisting role, so that the equipment can have continuous pulsating feeding and air locking function at the same time, so as to meet the requirements of pneumatic conveying of powder and granular materials.

[0003] The shaft that drives the valve plate in the flap valve is rotatably installed on the surface of the valve body. In order to ensure the sealing, it is generally necessary to seal the shaft and the valve body with flexible materials (asbestos, aluminum silicate fiber wool, etc.). The shaft is in reciprocating motion every moment under working conditions, and there is often a gap here, which will cause the inside and outside of the valve body to be connected, resulting in air leakage and material leakage. Air leakage will cause the system power consumption and heat consumption to increase; material leakage will cause environmental pollution, and even high-temperature materials will cause safety accidents such as scalding of personnel. Therefore, a new type of flap valve sealing sleeve is needed to solve the above problems. Summary of the invention

[0004] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0005] A flap valve sealing sleeve comprises: a valve body, a plurality of first bearings, two valve plates are arranged inside the valve body, both ends of the two valve plates are arranged with a rotating shaft, a plurality of T-shaped holes are opened on the surface of the valve body, a plurality of the rotating shafts are rotatably inserted into the inner walls of a plurality of the T-shaped holes through a plurality of the first bearings respectively, a plurality of the rotating shafts are opened on the surfaces of the plurality of the rotating shafts and a plurality of the surfaces of the threaded grooves are threadedly sleeved with rotating sleeves.

[0006] Furthermore, several of the rotating shafts include several protrusions respectively arranged on both sides of the two valve plates, the surfaces of several of the protrusions are respectively rotatably inserted into the surfaces of several of the T-shaped holes and the surfaces are all provided with rotating bodies, several of the rotating bodies are respectively rotatably inserted into the inner walls of several of the T-shaped holes through several of the first bearings, and several of the threaded grooves are respectively opened on the surfaces of several of the protrusions.

[0007] Furthermore, the surfaces of several of the rotating sleeves are fixedly mounted with insert rings, and several second bearings are also included. Several of the insert rings are rotatably inserted into the inner walls of several of the T-shaped holes through several of the second bearings.

[0008] Furthermore, a plurality of surfaces of the rotating sleeves are provided with injection holes.

[0009] The beneficial effects of the utility model are as follows:

[0010] When the utility model is in use, the user can drive the rotating shaft to rotate to drive the valve plate to rotate, thereby adjusting the conduction state of the two ends of the valve body. During the rotation of the T-shaped hole, the rotating shaft will drive the rotating sleeve to rotate through the threaded groove on the surface. Because the rotating sleeve and the rotating shaft are threadedly connected, metal sealing is realized (previously, asbestos-type flexible compression shaft seals were used, which would cause air leakage and material leakage at the rotating shaft over time), achieving the purpose of "0" air leakage, and fully reflecting the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0012] Figure 2 It is a partial three-dimensional structural schematic diagram of the utility model;

[0013] Figure 3 It is a partial schematic diagram of a partial cross-sectional view of the utility model;

[0014] Figure 4 It is a partial schematic diagram of a partial cross-sectional view of a part of the structure of the utility model.

[0015] Figure numerals: 1, valve body; 2, first bearing; 3, valve plate; 4, rotating shaft; 401, protrusion; 402, rotating body; 5, T-shaped hole; 6, threaded groove; 7, rotating sleeve; 8, insert ring; 9, second bearing; 10, injection hole. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.

[0017] The present application provides a flap valve sealing sleeve, which is mainly used to solve the problem that the shaft driving the valve plate to rotate in the flap valve is rotatably mounted on the surface of the valve body. In order to ensure the sealing, it is generally necessary to seal the shaft and the valve body with a flexible material (asbestos, aluminum silicate fiber wool, etc.). The shaft is in reciprocating motion every moment under the working state, and there is often a gap here, which means that the inside and outside of the valve body are connected, causing air leakage and material leakage. Air leakage will cause the system power consumption to increase and the heat consumption to increase; material leakage will cause environmental pollution, and even high-temperature materials will cause scalding of personnel and other safety accidents. The following technical solutions are provided, which will be combined with Figure 1-Figure 4 Make a detailed description:

[0018] The flap valve sealing sleeve comprises: a valve body 1, a plurality of first bearings 2, and two valve plates 3 are arranged inside the valve body 1, and both ends of the two valve plates 3 are provided with rotating shafts 4, and the plurality of rotating shafts 4 are respectively rotatably inserted into the inner walls of a plurality of T-shaped holes 5 which are all opened on the surface of the valve body 1 through the plurality of first bearings 2, and the surfaces of the plurality of rotating shafts 4 are provided with thread grooves 6, and the surfaces of the plurality of thread grooves 6 are threadedly sleeved with rotating sleeves 7, so that when the rotating shaft 4 rotates, the rotating sleeves 7 abut against the inner walls of the T-shaped holes 5, and a better sealing effect can be achieved, wherein the rotating shafts 4 are rotated. The main components of the shaft 4 are: a number of protrusions 401 respectively arranged on both sides of the two valve plates 3, the surfaces of the two protrusions 401 are respectively rotatably inserted into the surfaces of a number of T-shaped holes 5 and the surfaces are all provided with rotating bodies 402, a number of rotating bodies 402 are respectively rotatably inserted into the inner walls of a number of T-shaped holes 5 through a number of first bearings 2, and a number of thread grooves 6 are respectively opened on the surfaces of a number of protrusions 401, so when the protrusions 401 rotate, it will drive the rotating bodies 402 to rotate, and at this time, the rotating sleeve 7 threadedly sleeved on the surface of the thread groove 6 can play a sealing effect.

[0019] When in use, the user can drive the rotating shaft 4 to rotate to drive the valve plate 3 to rotate, thereby adjusting the conduction state of the two ends of the valve body 1. During the rotation of the rotating shaft 4 in the T-shaped hole 5, the rotating sleeve 7 will be driven to rotate through the threaded groove 6 on the surface. Because the rotating sleeve 7 and the rotating shaft 4 are threadedly connected, metal sealing is achieved (previously, asbestos-type flexible compression shaft seals were used, which would cause air leakage and material leakage at the rotating shaft over time), achieving the purpose of "0" air leakage, which fully reflects the practicality of the device.

[0020] like Figure 3 , Figure 4As shown, in some embodiments, in order to further optimize the solution, several second bearings 9 are further included, and plug rings 8 are fixedly installed on the surfaces of several rotating sleeves 7, and several plug rings 8 are rotatably inserted into the inner walls of several T-shaped holes 5 through several second bearings 9, so that when the rotating body 402 rotates, the rotating sleeve 7 and the plug ring 8 are driven to rotate in turn, thereby further improving the sealing performance. At the same time, injection holes 10 are opened on the surfaces of several rotating sleeves 7, and users can add high-temperature resistant grease inside the injection hole 10, thereby improving the sealing performance.

[0021] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The sealing sleeve of the flap valve is characterized by: include: A valve body (1), a plurality of first bearings (2), two valve plates (3) being arranged inside the valve body (1), both ends of the two valve plates (3) being arranged with a rotating shaft (4), a plurality of T-shaped holes (5) being provided on the surface of the valve body (1), the plurality of rotating shafts (4) being rotatably inserted into the inner walls of the plurality of T-shaped holes (5) through the plurality of first bearings (2), the surfaces of the plurality of rotating shafts (4) being provided with a thread groove (6), and the surfaces of the plurality of thread grooves (6) being threadedly sleeved with a rotating sleeve (7).

2. The flap valve sealing sleeve according to claim 1, characterized in that: The plurality of rotating shafts (4) comprise a plurality of protrusions (401) respectively arranged on both sides of the two valve plates (3); the surfaces of the plurality of protrusions (401) are respectively rotatably plugged into the surfaces of the plurality of T-shaped holes (5) and the surfaces are all provided with rotating bodies (402); the plurality of rotating bodies (402) are respectively rotatably plugged into the inner walls of the plurality of T-shaped holes (5) through the plurality of first bearings (2); and the plurality of thread grooves (6) are respectively opened on the surfaces of the plurality of protrusions (401).

3. The flap valve sealing sleeve according to claim 1, characterized in that: The surfaces of the plurality of rotating sleeves (7) are all fixedly mounted with insert rings (8), and the plurality of rotating sleeves (7) further comprise a plurality of second bearings (9). The plurality of insert rings (8) are rotatably inserted into the inner walls of the plurality of T-shaped holes (5) via the plurality of second bearings (9).

4. The flap valve sealing sleeve according to claim 1, characterized in that: Liquid injection holes (10) are provided on the surfaces of the plurality of rotating sleeves (7).

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