Wear-resistant RTO horizontal pushing valve

Abstract

The utility model discloses a wear-resistant RTO horizontal pushing valve, which belongs to the technical field of horizontal pushing valves, and comprises an inner plate, an outer plate, an air cylinder assembly, a driving shaft and a baffle assembly, the inner plate is provided with an air hole, the air cylinder assembly drives the baffle assembly to move between the inner plate and the outer plate through the driving shaft, and the baffle assembly is used for closing or opening the air hole. An annular groove is formed in the face, corresponding to the baffle assembly, of the inner plate, and a packing sealing ring is connected to the annular groove. The sealing device is resistant to abrasion, fatigue and aging, and high sealing performance can be kept under the condition of low compression stress; the sealing effect is better due to the arrangement of the two channels, and the packing sealing ring is connected with the inner plate through the bolt, so that the connection is more stable; and after being worn, the sealing is still stable and effective.

Description

Technical Field

[0001] The utility model belongs to the technical field of push valves, and in particular relates to a wear-resistant RTO push valve. Background Art

[0002] The purification of industrial waste gas containing volatile organic compounds (VOCs) is a hot topic in air pollution control. Regenerative thermal incineration technology (RTO) is a typical method for purifying industrial organic waste gas. This technology is suitable for treating medium and high concentrations of industrial organic waste gas. In the regenerative thermal incineration device (abbreviated as RTO), the push-pull valve is one of the most important structures. The quality of the push-pull valve directly affects the working quality of the entire RTO process. A small waste gas leakage will greatly reduce the efficiency of waste gas treatment. At present, in the RTO industry, the push-pull valve is frequently opened and closed, and metal and metal lack lubrication and frequently collide and rub against each other. The sealing material increases the waste gas leakage rate due to wear, fatigue, aging and other reasons, resulting in excessive leakage and seal failure. Utility Model Content

[0003] The technical problem solved by the utility model is to provide a wear-resistant RTO push valve which can maintain good sealing even when used for a long time.

[0004] Technical solution: In order to solve the above technical problems, the technical solution adopted by the utility model is as follows:

[0005] A wear-resistant RTO push valve comprises an inner plate, an outer plate connected to the inner plate, a cylinder assembly connected to the outer plate, a drive shaft connected to the cylinder assembly, and a baffle assembly connected to the drive shaft. The inner plate is provided with an air hole, the cylinder assembly drives the baffle assembly to move between the inner plate and the outer plate through the drive shaft, the baffle assembly is used to close or open the air hole, and an annular groove is provided on one side of the inner plate corresponding to the baffle assembly, and a packing sealing ring is connected to the annular groove.

[0006] Furthermore, the packing seal is detachably connected to the inner plate via a first connecting bolt.

[0007] Further, the annular groove includes a first annular groove and a second annular groove, and the packing sealing ring includes a first packing corresponding to the first annular groove and a second packing corresponding to the second annular groove.

[0008] Furthermore, the baffle assembly includes a piston disc and a baffle.

[0009] Furthermore, a fiber washer corresponding to the packing seal is provided on the baffle plate, and when the baffle plate assembly closes the air hole, the fiber washer is pressed on the packing seal.

[0010] Furthermore, the inner plate is connected to the outer plate via two or more connecting rods.

[0011] Furthermore, the inner plate is provided with a guide assembly for guiding the drive shaft, and the guide assembly includes a first roller and a second roller corresponding to the drive shaft.

[0012] Furthermore, the cylinder assembly is connected to the drive shaft via a floating joint, the drive shaft passes through the inner plate and the outer plate, and the axis of the drive shaft is in the same straight line as the center lines of the inner plate and the outer plate.

[0013] Furthermore, the first packing and the second packing are both graphite packing.

[0014] Beneficial effects: Compared with the prior art, the utility model has the following advantages:

[0015] 1. By setting the packing seal, it is resistant to wear, fatigue and aging, and can maintain high sealing performance even under very low compression stress;

[0016] 2. The inner plate is connected to the outer plate as a whole through a connecting rod, which effectively increases the compressive strength of the plate and makes the inner and outer plates less likely to deform;

[0017] 3. The annular groove includes a first annular groove and a second annular groove. The arrangement of the two grooves has a better sealing effect, and the packing is connected to the inner plate by bolts, which makes the connection more stable;

[0018] 4. A fiber gasket corresponding to the packing seal is arranged on the baffle assembly. The two uneven surfaces are in contact, which has a good sealing effect. It is not afraid of wear after long-term use, and the seal is still stable and effective after wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the utility model;

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of an embodiment of the utility model;

[0021] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 It is a schematic diagram of the structure of the implementation guide component. DETAILED DESCRIPTION

[0023] The present invention will be further explained below in conjunction with specific embodiments. The embodiments are implemented based on the technical solution of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0024] like Figure 1 As shown, a wear-resistant RTO push valve includes an inner plate 1, an outer plate 2, a cylinder assembly 3, a drive shaft 4, a baffle assembly 5, a packing seal 6, a connecting rod 7 and a guide assembly 8. The inner plate 1 is a circular plate, and an air hole 11 is provided on the inner plate 1. The air hole 11 is circular. When in use, the inner plate 1 is connected to the processing chamber, and the gas can enter and exit the processing chamber from the air hole 11. The outer plate 2 is a circular plate, and the outer plate 2 and the inner plate 1 are arranged on the same central axis. The inner plate 1 is connected to the outer plate 2 through four connecting rods 7, and the four connecting rods 7 are distributed in a circular array. Threaded bolts are provided at both ends of the connecting rod 7. Threaded holes are provided at the inner plate 1 and the outer plate 2 corresponding to the connecting rod 7, so that the connecting rod 7 is threadedly connected to the inner plate 1 and the outer plate 2, and the inner plate 1 and the outer plate 2 are connected into a whole, which effectively increases the compressive strength of the plate and makes the inner and outer plates less likely to deform.

[0025] like Figure 1 and Figure 2 As shown, the cylinder assembly 3 is arranged on the outer surface of the outer plate 2 through a bracket. The cylinder assembly 3 adopts an existing cylinder and is driven by an external air source. A protective cover 9 is provided on the outside of the cylinder assembly 3. The drive shaft 4 is connected to the cylinder assembly 3. One end of the drive shaft 4 is connected to the cylinder assembly 3 through a floating joint 31. The floating joint allows the load end of the cylinder to swing within a certain angle, thereby preventing the rod from being stuck due to center misalignment, avoiding distortion and deformation of the cylinder, and protecting the integrity and normal operation of the cylinder and mechanical parts. The other end of the drive shaft 4 passes through the outer plate 2 and the inner plate 1. The other end of the drive shaft 4 passes through the inner plate 1 and is located on the outside of the inner plate 1. The axis of the drive shaft 4 is in the same straight line as the center lines of the inner plate 1 and the outer plate 2. When the cylinder assembly 3 is working, it drives the drive shaft 4 to move left and right.

[0026] like Figure 1 and Figure 2 As shown, the baffle assembly 5 is connected to the drive shaft 4. The baffle assembly 5 is in the shape of a circular plate as a whole. The diameter of the baffle assembly 5 is larger than the diameter of the air hole 11. The baffle assembly 5 is used to block the air hole 11. The baffle assembly 5 includes a piston disk 51 and a baffle 52. The piston disk 51 is provided with a through hole corresponding to the drive shaft 4 and is locked on the drive shaft 4 by fasteners such as bolts. The baffle 52 is detachably connected to the piston disk 51 by bolts. The baffle assembly 5 is located between the inner plate 1 and the outer plate 2. The cylinder assembly 3 drives the baffle assembly 5 to move between the inner plate 1 and the outer plate 2 through the drive shaft 4. When the drive shaft 4 drives the baffle assembly 5 to move toward the predetermined position in the direction of the inner plate 1, the baffle assembly 5 is used to close the air hole 11. When the drive shaft 4 drives the baffle assembly 5 to move toward the outer plate 2, the baffle assembly 5 opens the air hole 11.

[0027] like Figure 1 , Figure 2 and Figure 3As shown, an annular groove 12 is provided on one side of the inner plate 1 corresponding to the baffle assembly 5, that is, the inner side surface. The annular groove 12 includes a first annular groove 121 and a second annular groove 122. The first annular groove 121 and the second annular groove 122 are both annular and have diameters greater than the diameter of the pore 11. The cross-sections of the two grooves are both rectangular. A packing seal 6 is connected to the annular groove 12. The packing seal 6 includes a first packing 61 and a second packing 62. The first packing 61 corresponds to the first annular groove 121 and is stuck in the first annular groove 121. The second packing 62 corresponds to the second annular groove 122 and is stuck in the second annular groove 122. The first packing 61 and the second packing 62 are made of graphite packing, which is woven from graphite wire. The heights of the first packing 61 and the second packing 62 are both higher than the heights of the two annular grooves. A plurality of threaded holes are provided on the inner plate 1 at positions corresponding to the two annular grooves. The first connecting bolt 63 penetrates the packing and is threadedly connected to the inner plate 1. The first connecting bolt 63 adopts a flat head bolt. The head surface of the first connecting bolt 63 is in the same plane as the inner side surface of the inner plate 1. Since the first packing 61 and the second packing 62 are both elastic, the first connecting bolt 63 is recessed into the first packing 61 and the second packing 62 without affecting the sealing. When in use, the graphite packing has excellent self-lubrication, softness and resilience. It can be resistant to wear and aging under the frequent switching pressure of the baffle assembly 5 and has a good sealing effect. It can also maintain a high sealing performance under the condition of very low compressive stress. A fiber gasket 521 corresponding to the packing seal 6 is provided on the baffle 52. The fiber gasket 521 is made of high-temperature resistant ceramic fiber tape. When the baffle assembly 5 closes the air hole 11, the fiber gasket 521 is pressed on the first packing 61 and the second packing 62. Since the fiber gasket 521 has an uneven first fiber surface and the graphite packing has an uneven second fiber surface, under the thrust of the cylinder assembly 3, the fiber gasket 521 contacts the graphite packing, and the uneven surfaces of the two have a good sealing effect. After long-term use, it is less likely to leak than flat contact. Compared with the contact between the flat surface and the rubber sealing ring, the rubber sealing ring is easily worn and causes local leakage. After long-term use, the two sealing surfaces of this embodiment are still uneven, the leakage rate is very small, and the sealing is stable and effective.

[0028] like Figure 2 and Figure 4 As shown, a guide assembly 8 is provided on the inner plate 1, and the guide assembly 8 is arranged on the outer side of the inner plate 1. The guide assembly 8 includes a first roller 81, a second roller 82 and a positioning plate 83. The two rollers are connected to the inner plate 1 by using the positioning plate 83. The first roller 81 and the second roller 82 are symmetrically arranged and arranged on the upper and lower sides of the driving shaft 4. The grooves on the rollers on both sides correspond to the driving shaft 4, so as to guide the driving shaft 4 when the driving shaft 4 moves left and right, thereby reducing the wear of the driving shaft 4.

[0029] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A wear-resistant RTO push valve, characterized in that: The invention comprises an inner plate (1), an outer plate (2) connected to the inner plate (1), a cylinder assembly (3) connected to the outer plate (2), a drive shaft (4) connected to the cylinder assembly (3), and a baffle assembly (5) connected to the drive shaft (4); the inner plate (1) is provided with an air hole (11); the cylinder assembly (3) drives the baffle assembly (5) to move between the inner plate (1) and the outer plate (2) through the drive shaft (4); the baffle assembly (5) is used to close or open the air hole (11); a side of the inner plate (1) corresponding to the baffle assembly (5) is provided with an annular groove (12); a packing seal (6) is connected to the annular groove (12).

2. The wear-resistant RTO push valve according to claim 1, characterized in that: The packing seal ring (6) is detachably connected to the inner plate (1) via a first connecting bolt (63).

3. The wear-resistant RTO push valve according to claim 2, characterized in that: The annular groove (12) comprises a first annular groove (121) and a second annular groove (122); the packing seal ring (6) comprises a first packing (61) corresponding to the first annular groove (121) and a second packing (62) corresponding to the second annular groove (122).

4. The wear-resistant RTO push valve according to claim 1, characterized in that: The baffle assembly (5) comprises a piston disc (51) and a baffle (52).

5. The wear-resistant RTO push valve according to claim 4, characterized in that: The baffle plate (52) is provided with a fiber washer (521) corresponding to the packing seal (6); when the baffle plate assembly (5) closes the air hole (11), the fiber washer (521) is pressed on the packing seal (6).

6. The wear-resistant RTO push valve according to claim 1, characterized in that: The inner plate (1) is connected to the outer plate (2) via two or more connecting rods (7).

7. The wear-resistant RTO push valve according to claim 1, characterized in that: The inner plate (1) is provided with a guide assembly (8) for guiding the drive shaft (4), and the guide assembly (8) comprises a first roller (81) and a second roller (82) corresponding to the drive shaft (4).

8. The wear-resistant RTO push valve according to claim 1, characterized in that: The cylinder assembly (3) is connected to the drive shaft (4) via a floating joint (31); the drive shaft (4) passes through the inner plate (1) and the outer plate (2); and the axis of the drive shaft (4) is in the same straight line as the center line of the inner plate (1) and the outer plate (2).

9. The wear-resistant RTO push valve according to claim 3, characterized in that: The first packing (61) and the second packing (62) are both graphite packings.

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