Totally enclosed rotary valve

Abstract

The utility model discloses a kind of full-closed rotary valves, the utility model includes valve body, the inside of valve body is provided with central shaft, central shaft side wall is provided with multiple blades, the both ends of central shaft are fixedly connected with end plate, the both ends of blade and end plate side wall contact, the top of blade is connected with rubber strip by compensation assembly one, rubber strip and valve body inner wall contact cooperation, the outer wall of end plate is connected with rubber ring by compensation assembly two, the side wall of valve body is provided with side cover, the outer wall of valve body close to side cover one side is provided with flange, side cover is fixedly connected with flange sealing by multiple bolts;The utility model is provided with compensation assembly one and compensation assembly two, after being used for sealing rubber strip and rubber ring wear, promote rubber strip and rubber ring movement to compensate the gap generated by wear, avoid wear gap, appear the condition that powder spills from gap to outside.

Description

Technical Field

[0001] This utility model relates to the field of rotary valve technology, and in particular to a fully enclosed rotary valve. Background Technology

[0002] Rotary valves are suitable for loading and unloading dry powdery and granular materials. They are commonly used in the unloading of equipment such as mills, dryers, drying towers, silos, and grain depots. They mainly consist of a valve body, valve wheel assembly, and drive assembly.

[0003] A search revealed a Chinese patent publication number CN218344658U, which discloses a valve core including a rotating shaft. Several blades are arranged circumferentially on the rotating shaft. Each blade includes a rigid portion and an elastic portion arranged sequentially along the radial direction of the rotating shaft and in a direction away from the shaft. This patent, by configuring the blades as rigid and elastic portions, allows for elastic deformation of the elastic portion of the blade when material or impurities become trapped in the gap between the elastic portion of the blade and the inner wall of the valve body. This reduces the frictional resistance caused by the trapped material or impurities.

[0004] However, during the rotation of the valve core, the elastic part of the blade will wear due to friction with the inner wall of the valve body. Although the elastic part has a certain degree of elasticity, when the wear reaches a certain level, gaps will still be generated between the elastic part of the blade and the inner wall of the valve body, resulting in powder overflowing outward from the gaps. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a fully enclosed rotary valve.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A fully enclosed rotary valve includes a valve body, a central shaft inside the valve body, multiple blades on the side wall of the central shaft, end plates fixedly connected to both ends of the central shaft, the two ends of the blades contacting the side walls of the end plates, a rubber strip connected to the tip of the blades through a compensation component one, the rubber strip contacting and engaging with the inner wall of the valve body, and a rubber ring connected to the outer wall of the end plates through a compensation component two.

[0008] As a further embodiment of this utility model: the compensation component includes a groove and a moving block. The groove is opened at the end of the blade away from the central axis. The moving block is slidably connected to the inner wall of the groove. An elastic element is fixedly connected to one outer wall of the moving block, and the other end of the elastic element is connected to the inner wall of the groove.

[0009] As a further embodiment of this utility model: a locking block is fixedly connected to one end of the rubber strip, and a slot is provided on the side wall of the moving block for the locking block to be inserted into, and the rubber strip slides in cooperation with the blade.

[0010] As a further embodiment of this utility model: the compensation component two includes a receiving groove and a compression ring. The receiving groove is opened on the side wall of the end plate. The rubber ring slides and engages with the inner wall of the end plate, and the side wall of the rubber ring contacts and engages with the inner wall of the valve body.

[0011] As a further embodiment of this utility model: the extrusion ring is laterally slidably fitted to the inner wall of the receiving groove, the outer wall of the extrusion ring near the rubber ring is set as an inclined surface, one end of the rubber ring is slidably fitted to the inclined surface, and the side wall of the extrusion ring is connected to an elastic element two, the other end of the elastic element two is connected to the inner wall of the receiving groove.

[0012] As a further improvement of this utility model: the valve body sidewall is provided with a side cover, and the outer wall of the valve body near the side cover is provided with a protruding edge, and the side cover is sealed and fixedly connected to the protruding edge by multiple bolts.

[0013] As a further embodiment of this utility model: multiple blades are arranged circumferentially around a central axis, the blades are fixedly connected to the central axis by bolts, and a connecting block that is inserted into the central axis is fixedly connected to the bottom of the blade.

[0014] As a further embodiment of this utility model: a connecting groove is provided on the side wall of the central shaft, a spline shaft is rotatably connected to the inner wall of the valve body, the spline shaft is limited and inserted into the inner wall of the connecting groove, and an internal hexagon bolt is embedded in the outer wall of the end plate near the side cover, the internal hexagon bolt is threadedly connected to the central shaft and the spline shaft.

[0015] Compared with the prior art, this utility model provides a fully enclosed rotary valve, which has the following advantages:

[0016] 1. This utility model, by providing compensation component one and compensation component two, after the rubber strip and rubber ring used for sealing are worn, pushes the rubber strip and rubber ring to move and compensate for the gaps caused by wear, so as to avoid the situation where powder overflows from the gaps caused by wear.

[0017] 2. In this utility model, by providing a connecting block, the connecting block is inserted into the central shaft when the blade is installed, and the connecting block can increase the connection strength between the blade root and the central shaft.

[0018] 3. This utility model, by providing a splined shaft, end plate, connecting groove and internal hex bolts, facilitates the removal of the assembly of the central shaft, end plate and blade from the valve body, making operation convenient.

[0019] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description

[0020] Figure 1This is a schematic diagram of the overall structure of a fully enclosed rotary valve proposed in this utility model.

[0021] Figure 2 This is a schematic diagram of the internal structure of a fully enclosed rotary valve proposed in this utility model;

[0022] Figure 3 This is a side cross-sectional view of a fully enclosed rotary valve proposed in this utility model.

[0023] Figure 4 This is a schematic diagram of the connection structure of the rubber strip and blade of a fully enclosed rotary valve proposed in this utility model.

[0024] Figure 5 This is a partial structural diagram of a fully enclosed rotary valve proposed in this utility model.

[0025] In the diagram: 1. Valve body; 2. Side cover; 3. Drive mechanism; 4. Central shaft; 5. Splined shaft; 6. End plate; 7. Connecting groove; 8. Socket head bolt; 9. Blade; 10. Connecting block; 11. Rubber strip; 12. Moving block; 13. Elastic element one; 14. Slide groove; 15. Locking block; 16. Receiving groove; 17. Rubber ring; 18. Extrusion ring; 19. Elastic element two. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] Example 1

[0029] A fully enclosed rotary valve, such as Figures 1 to 5As shown, the valve includes a valve body 1, a side cover 2 on the side wall of the valve body 1, a protruding edge on the outer wall of the valve body 1 near the side cover 2, the side cover 2 being sealed and fixedly connected to the protruding edge by multiple bolts, a central shaft 4 inside the valve body 1, multiple blades 9 on the side wall of the central shaft 4, the multiple blades 9 being arranged circumferentially around the central shaft 4, the blades 9 being fixedly connected to the central shaft 4 by bolts, a connecting block 10 being fixedly connected to the bottom of the blades 9 and inserted into the central shaft 4, end plates 6 being fixedly connected to both ends of the central shaft 4, the two ends of the blades 9 contacting the side walls of the end plates 6, a rubber strip 11 being connected to the top of the blades 9 through a compensation component one, the rubber strip 11 contacting and engaging with the inner wall of the valve body 1, and a rubber ring 17 being connected to the outer wall of the end plates 6 through a compensation component two.

[0030] The compensation component includes a groove 14 and a moving block 12. The groove 14 is located at the end of the blade 9 away from the central axis 4. The moving block 12 is slidably connected to the inner wall of the groove 14. An elastic element 13 is fixedly connected to one outer wall of the moving block 12. The other end of the elastic element 13 is connected to the inner wall of the groove 14. A locking block 15 is fixedly connected to one end of the rubber strip 11. A locking groove for the locking block 15 to be engaged is provided on the side wall of the moving block 12. The rubber strip 11 is slidably engaged with the blade 9.

[0031] The second compensation component includes a receiving groove 16 and a compression ring 18. The receiving groove 16 is formed on the side wall of the end plate 6. The rubber ring 17 is slidably engaged with the inner wall of the end plate 6, and the side wall of the rubber ring 17 is in contact with the inner wall of the valve body 1. The compression ring 18 is laterally slidably engaged with the inner wall of the receiving groove 16. The outer wall of the compression ring 18 near the rubber ring 17 is set as an inclined surface. One end of the rubber ring 17 is slidably engaged with the inclined surface. An elastic element 2 19 is connected to the side wall of the compression ring 18, and the other end of the elastic element 2 19 is connected to the inner wall of the receiving groove 16.

[0032] The outer wall of the valve body 1 is provided with a drive mechanism 3 for driving the spline shaft 5 to rotate. The drive mechanism 3 is a mature existing technology, and its basic structure and working principle are well known to those skilled in the art, so it will not be described in detail here. The drive mechanism 3 is electrically connected to an external control device.

[0033] During operation, the drive mechanism 3 drives the spline shaft 5 to rotate, and the spline shaft 5 drives the central shaft 4 to rotate. The rubber strip 11 and the rubber ring 17 ensure the seal between the blade 9 and the side wall of the end plate 6 and the inner wall of the valve body 1. The elastic element 13 and the elastic element 2 19 are in a compressed state under normal conditions. When the rubber strip 11 wears, the elasticity of the elastic element 13 will push the moving block 12 to move along the slide groove 14 to move the rubber strip 11 and compensate for the wear of the rubber strip 11, ensuring stable contact between the rubber strip 11 and the inner wall of the valve body 1. The elastic element 2 19 will push the compression ring 18 to compress the rubber ring 17. Since one side of the compression ring 18 is set as an inclined surface, the compression of the rubber ring 17 by the compression ring 18 will cause the rubber ring 17 to move away from the axis of the spline shaft 5, so that the rubber ring 17 is always in stable contact with the inner wall of the valve body 1. When installing the blade 9, the connecting block 10 is inserted into the central shaft 4, and then the blade 9 is fixed to the central shaft 4 by bolts. The connecting block 10 can increase the connection strength between the root of the blade 9 and the central shaft 4.

[0034] By providing compensation component one and compensation component two, after the rubber strip 11 and rubber ring 17 used for sealing are worn, the rubber strip 11 and rubber ring 17 are pushed to move to compensate for the gaps caused by wear, so as to avoid the situation where powder overflows from the gaps.

[0035] By providing a connecting block 10, the connecting block 10 is inserted into the central shaft 4 when the blade 9 is installed, and the connecting block 10 can increase the connection strength between the root of the blade 9 and the central shaft 4.

[0036] Example 2

[0037] A fully enclosed rotary valve, this embodiment is based on embodiment 1, with the following improvements, such as... Figure 2 , Figure 3 As shown, the central shaft 4 has a connecting groove 7 on its side wall, and a spline shaft 5 is rotatably connected to the inner wall of the valve body 1. The spline shaft 5 is inserted into the inner wall of the connecting groove 7 for a limiting connection. An internal hexagon bolt 8 is embedded in the outer wall of the end plate 6 near the side cover 2. The internal hexagon bolt 8 is threadedly connected to the central shaft 4 and the spline shaft 5.

[0038] When the rubber strip 11 and rubber ring 17 are worn out and need to be replaced, remove the bolts to remove the side cover 2, and then use a tool to remove the hex bolt 8. The central shaft 4 can be pulled out to one side of the valve body 1. The assembly of the central shaft 4, end plate 6, and blade 9 is removed from the valve body 1. Then, remove the rubber strip 11, and insert the retaining block 15 at one end of the new rubber strip 11 into the retaining groove to replace the rubber strip 11. Repeat the operation to replace all the rubber strips 11 on multiple blades 9. Then, remove the rubber ring 17 and insert the new rubber ring 17 through its... After its elasticity expands, it is fitted onto the end plate 6, and then the rubber ring 17 is pushed to one side of the receiving groove 16. The rubber ring 17 retracts into the receiving groove 16. Then, the completed assembly of the central shaft 4, end plate 6 and blade 9 is installed into the valve body 1. The spline shaft 5 is inserted into the connecting groove 7. During the installation process, the rubber strip 11 and the rubber ring 17 are both squeezed by the inner wall of the valve body 1, pushing the elastic element 13 and elastic element 29 to compress. Then, the internal hex bolt 8 is screwed in, and the central shaft 4 is fixedly connected to the spline shaft 5. Then, the side cover 2 is reinstalled.

[0039] The assembly of the central shaft 4, end plate 6, connecting groove 7, and internal hex bolts 8 facilitates the removal of the assembly of the central shaft 4, end plate 6, and blade 9 from the valve body 1, making operation convenient.

[0040] Working principle: During operation, the drive mechanism 3 drives the spline shaft 5 to rotate, which in turn drives the central shaft 4 to rotate. The rubber strip 11 and rubber ring 17 ensure the seal between the blade 9 and the side wall of the end plate 6 and the inner wall of the valve body 1. The elastic element 13 and the elastic element 2 19 are in a compressed state under normal conditions. When the rubber strip 11 wears, the elasticity of the elastic element 13 will push the moving block 12 to move along the slide groove 14, thus moving the rubber strip 11 to compensate for the wear of the rubber strip 11 and ensure stable contact between the rubber strip 11 and the inner wall of the valve body 1. The elastic element 19 pushes the compression ring 18 to compress the rubber ring 17. Since one side of the compression ring 18 is sloped, the compression of the rubber ring 17 by the compression ring 18 causes the rubber ring 17 to move away from the axis of the spline shaft 5, ensuring that the rubber ring 17 remains stably in contact with the inner wall of the valve body 1. When installing the blade 9, the connecting block 10 is inserted into the central shaft 4, and then the blade 9 is fixed to the central shaft 4 with bolts. The connecting block 10 increases the connection strength between the root of the blade 9 and the central shaft 4. (The last sentence appears to be incomplete and possibly refers to a different part of the design.) When 17 is worn out and needs replacement, remove the bolts to remove the side cover 2, then use a tool to remove the hex bolts 8. The central shaft 4 can be pulled out to one side of the valve body 1. The assembly of the central shaft 4, end plate 6, and blade 9 is removed from the valve body 1. Then, remove the rubber strip 11, and insert the retaining block 15 at one end of the new rubber strip 11 into the slot to replace the rubber strip 11. Repeat the operation to replace all the rubber strips 11 on multiple blades 9. Then, remove the rubber ring 17 and expand the new rubber ring 17 through its own elasticity. After the rubber ring 17 is pushed onto the end plate 6, it retracts into the receiving groove 16. Then, the replaced central shaft 4, end plate 6 and blade 9 are installed into the valve body 1. The spline shaft 5 is inserted into the connecting groove 7. During the installation process, the rubber strip 11 and rubber ring 17 are squeezed by the inner wall of the valve body 1, which pushes the elastic element 13 and elastic element 2 19 to compress. Then, the internal hex bolt 8 is screwed in, and the central shaft 4 is fixedly connected to the spline shaft 5. Then, the side cover 2 is put back.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A fully enclosed rotary valve, comprising a valve body (1), characterized in that, The valve body (1) is provided with a central shaft (4) inside. Multiple blades (9) are provided on the side wall of the central shaft (4). Both ends of the central shaft (4) are fixedly connected to end plates (6). Both ends of the blades (9) are in contact with the side wall of the end plate (6). The top of the blades (9) is connected to a rubber strip (11) through a compensation component one. The rubber strip (11) is in contact with the inner wall of the valve body (1). The outer wall of the end plate (6) is connected to a rubber ring (17) through a compensation component two.

2. The fully enclosed rotary valve according to claim 1, characterized in that, The compensation component includes a groove (14) and a moving block (12). The groove (14) is located at the end of the blade (9) away from the central axis (4). The moving block (12) is slidably connected to the inner wall of the groove (14). An elastic element (13) is fixedly connected to one side of the outer wall of the moving block (12). The other end of the elastic element (13) is connected to the inner wall of the groove (14).

3. A fully enclosed rotary valve according to claim 2, characterized in that, One end of the rubber strip (11) is fixedly connected to a locking block (15), and the side wall of the moving block (12) is provided with a slot for the locking block (15) to be inserted. The rubber strip (11) and the blade (9) are in sliding cooperation.

4. A fully enclosed rotary valve according to claim 1, characterized in that, The second compensation component includes a receiving groove (16) and a compression ring (18). The receiving groove (16) is opened on the side wall of the end plate (6). The rubber ring (17) slides with the inner wall of the end plate (6) and the side wall of the rubber ring (17) contacts the inner wall of the valve body (1).

5. A fully enclosed rotary valve according to claim 4, characterized in that, The extrusion ring (18) is laterally slidably fitted to the inner wall of the receiving groove (16). The outer wall of the extrusion ring (18) near the rubber ring (17) is set as an inclined surface. One end of the rubber ring (17) is slidably fitted to the inclined surface. An elastic element two (19) is connected to the side wall of the extrusion ring (18). The other end of the elastic element two (19) is connected to the inner wall of the receiving groove (16).

6. A fully enclosed rotary valve according to claim 1, characterized in that, The valve body (1) has a side cover (2) on its side wall. The valve body (1) has a raised edge on the outer wall near the side cover (2). The side cover (2) is sealed and fixed to the raised edge by multiple bolts.

7. A fully enclosed rotary valve according to claim 1, characterized in that, Multiple blades (9) are arranged circumferentially around the central axis (4). The blades (9) are fixedly connected to the central axis (4) by bolts. A connecting block (10) that is inserted into the central axis (4) is fixedly connected to the bottom of the blades (9).

8. A fully enclosed rotary valve according to claim 1, characterized in that, The central shaft (4) has a connecting groove (7) on its side wall. The valve body (1) is rotatably connected to a spline shaft (5). The spline shaft (5) is inserted into the inner wall of the connecting groove (7). The end plate (6) near the side cover (2) has an internal hex bolt (8) embedded in its outer wall. The internal hex bolt (8) is threadedly connected to the central shaft (4) and the spline shaft (5).

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