RTO rotary valve with novel sealing structure

Abstract

The utility model discloses an RTO rotary valve with a novel sealing structure, belongs to the technical field of waste gas treatment equipment, and aims at solving the problem that a traditional RTO rotary valve is poor in sealing effect. According to the technical scheme, the motor is characterized by comprising a rotor and a stator, the end face of the side, close to the stator, of the rotor is fixedly connected with a wear-resisting plate, the end face of the side, close to the rotor, of the stator is fixedly connected with a mounting ring, and the seam of the wear-resisting plate and the mounting ring is detachably connected with a sealing strip; the RTO rotary valve with the novel sealing structure has the advantages that the RTO rotary valve is excellent in sealing performance and long in service life, the RTO rotary valve is simple and convenient to mount and maintain, the operation energy consumption is low, and the service life of the RTO rotary valve is prolonged. And a good sealing state between the stator and the rotor can be kept under a severe working condition, so that low leakage and even zero leakage are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment equipment, and more specifically, to an RTO rotary valve with a novel sealing structure. Background Art

[0002] The RTO rotary valve is a key equipment of waste gas treatment equipment, and is especially suitable for the recovery and treatment of volatile organic compound (VOCs) waste gas with complex working conditions.

[0003] The traditional RTO rotary valve usually adopts the piston ring sealing method to isolate the treated gas and control the gas flow direction. This sealing method depends on the precise fit between the rotor and the piston ring and the precise position of the piston ring in the installation groove. However, due to the limitation of processing accuracy and wear in actual operation, there are often tiny gaps between the piston ring and the rotor, as well as between the piston ring and the installation groove. These gaps may cause gas leakage during the operation of the rotary valve, which will in turn affect the efficiency and emission performance of the RTO system. Therefore, a new solution is needed to solve the problem of poor sealing effect of the traditional RTO rotary valve. Summary of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide an RTO rotary valve with a novel sealing structure, and through the structural arrangement, the purpose of improving the sealing effect of the RTO rotary valve and reducing leakage is achieved.

[0005] The above technical purpose of the utility model is achieved by the following technical solutions: an RTO rotary valve with a novel sealing structure, including a rotor and a stator. A wear-resistant plate is fixedly connected to the outer side end face of the rotor, and an installation ring is fixedly connected to the side end face of the stator close to the rotor. A sealing strip is detachably connected at the joint of the wear-resistant plate and the installation ring. The stator is detachably connected with an adjusting device, and the adjusting device is internally provided with forces applied to the sealing strip along the circumferential radial direction and the axial direction.

[0006] The utility model is further arranged as follows: the adjusting device includes a radial adjusting component. The radial adjusting component includes a plurality of radial adjusting bolts and nuts one. An outer ring is fixedly connected to the side end face of the installation ring close to the rotor. A plurality of threaded holes one are opened on the side end face of the outer ring away from the rotor. A plurality of the radial adjusting bolts penetrate into the threaded holes one and are detachably connected with the outer ring. One end of the radial adjusting bolt penetrating into the threaded hole one is fixed by the nut one.

[0007] The present utility model is further configured as follows: The radial adjustment assembly further includes a plurality of first elastic members and a sleeve. The sleeve is located between the outer ring and the sealing strip and abuts against one end of the radial adjustment bolt inserted into the threaded hole. The sleeve is sleeved on the first elastic member. An inner ring is provided on one side of the sealing strip close to the first elastic member. One end of the first elastic member away from the sleeve abuts tightly against the inner ring.

[0008] The present utility model is further configured as follows: The distance between the inner top wall of the sleeve and the inner ring is less than the length of the first elastic member in its natural state.

[0009] The present utility model is further configured as follows: The adjusting device further includes an axial adjustment assembly. The axial adjustment assembly includes a clamping ring and a plurality of axial adjustment bolts. The clamping ring is located between the outer ring and the wear-resistant plate and on the side of the sleeve away from the stator. The clamping ring is provided with a plurality of second threaded holes. A plurality of the axial adjustment bolts are inserted into the second threaded holes and are detachably connected to the clamping ring.

[0010] The present utility model is further configured as follows: The axial adjustment assembly further includes a plurality of second elastic members, nuts two, and gaskets. The second elastic members are sleeved on one end of the axial adjustment bolts away from the clamping ring. The nuts are located at one end of the second elastic members away from the clamping ring. The gaskets are located between the nuts and the second elastic members.

[0011] The present utility model is further configured as follows: The distance between the end face of the outer ring away from the stator and the nut is less than the length of the second elastic member in its natural state.

[0012] The present utility model is further configured as follows: The projection of the clamping ring along the axis coincides with at least a part of the wear-resistant plate.

[0013] The present utility model is further configured as follows: The first threaded holes and the second threaded holes are alternately arranged at intervals.

[0014] In summary, the present utility model has the following beneficial effects:

[0015] By adjusting the length of the radial adjustment bolt, the sleeve drives the first elastic member to press the inner ring tightly, ensuring that the sealing strip will not be separated from the wear-resistant plate due to circumferential runout or eccentricity, thereby avoiding leakage. At the same time, the combined action of the axial adjustment bolt, nut two, gasket, second elastic member, and clamping ring effectively prevents the axial sliding or falling off of the sealing strip, reduces the requirements for the machining accuracy of the rotor and stator, reduces the machining cost, simplifies the installation process, and significantly improves the sealing ability of the rotary valve, reducing the leakage amount to an extremely low level. The low leakage amount of the rotary valve further improves the working efficiency of the RTO rotary valve, contributing to energy conservation, emission reduction, and cost reduction.

[0016] The RTO rotary valve with the novel sealing structure is simple in structure, low in cost, easy to process, has low precision requirements for supporting equipment, has excellent sealing performance, long service life, is simple and convenient to install and maintain, has low operation energy consumption, and can maintain a good sealing state between the stator and the rotor even under harsh working conditions, realizing low leakage or even zero leakage. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of the present utility model;

[0018] Figure 2 is Figure 1 an enlarged view of part A in

[0019] Figure 3 is a sectional view of the present utility model;

[0020] Figure 4 is Figure 3 an enlarged view of part B in

[0021] Figure 5 is a side sectional view of the present utility model;

[0022] Figure 6 is Figure 5 an enlarged view of part C in

[0023] In the figures: 1, rotor; 2, stator; 3, wear-resistant plate; 4, sealing strip; 5, inner ring; 6, outer ring; 7, clamping ring; 8, mounting ring; 9, sleeve; 101, first elastic member; 102, second elastic member; 11, radial adjustment bolt; 12, axial adjustment bolt; 103, first nut; 104, second nut; 14, gasket. Detailed Embodiment

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model; obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Embodiment:

[0026] As Figure 1 and Figure 5As shown in the figure, the RTO rotary valve with a new sealing structure includes a rotor 1 and a stator 2. A wear-resistant plate 3 is welded to the outer end face of the rotor 1. The wear-resistant plate 3 is a strip-shaped plate made of Q345 carbon steel, which is formed into a circle by the processing method of a rolling machine. The wear-resistant plate 3 improves the durability of the rotary valve and extends its service life. An installation ring 8 is welded to one end face of the stator 2 close to the rotor 1. The installation ring 8 is a Q235 carbon steel annular plate with a thickness of 10 mm, and its size can be adjusted according to actual conditions. An outer ring 6 is welded to one end face of the installation ring 8 close to the rotor 1. The outer ring 6 is a Q235 carbon steel strip-shaped plate with a size of 60 mm * 10 mm. A sealing strip 4 is installed at the joint of the wear-resistant plate 3 and the installation ring 8. The sealing strip 4 is a Q235 carbon steel strip-shaped plate with a size of 30 mm * 30 mm. The sealing strip 4 is detachable and replaceable. The stator 2 is detachably connected with an adjusting device, which is convenient for the maintenance and replacement of parts of the RTO rotary valve. The adjusting device utilizes the elastic deformation properties of the first elastic member 101 and the second elastic member 102 to apply forces along the circumferential radial direction and the axial direction to the sealing strip 4, ensuring the close contact between the sealing strip 4 and the wear-resistant plate 3 and the installation ring 8, thereby effectively improving the sealing effect and further ensuring the stability and reliability of the sealing performance.

[0027] As Figures 2 - 5 shown, the adjusting device includes a radial adjusting component. The radial adjusting component includes twenty-four radial adjusting bolts 11, a first nut 103, a first elastic member 101, and a sleeve 9. The specification of the radial adjusting bolt 11 is M16 * 130, grade 8.8. The specification of the first nut 103 is M16, grade 8. The first elastic member 101 is a spring. The sleeve 9 is a galvanized pipe with a diameter of φ45 mm * 3 mm and a length of L = 50 mm with one end sealed. Twenty-four first threaded holes are opened on the end face of the outer ring 6 away from the rotor 1. The twenty-four radial adjusting bolts 11 are inserted into the first threaded holes and installed on the outer ring 6. The head of the adjusting bolt is located on the side of the outer ring 6 away from the rotor 1. One end of the screw rod of the radial adjusting bolt 11 passing through the first threaded hole is tightened and fixed in cooperation with the first nut 103. The sleeve 9 is located between the outer ring 6 and the sealing strip 4 and abuts against one end of the radial adjusting bolt 11 passing through the first threaded hole. The sleeve 9 is sleeved on the first elastic member 101. An inner ring 5 is arranged on the side of the sealing strip 4 close to the first elastic member 101. The inner ring 5 is a Q235 carbon steel strip-shaped plate with a size of 60 mm * 6 mm. One end of the first elastic member away from the sleeve 9 abuts tightly against the inner ring 5. The distance between the inner top wall of the sleeve 9 and the inner ring 5 is less than the length of the first elastic member 101 in its natural state, so that the first elastic member 101 is in a compressed state, pushing the inner ring 5 to move towards the sealing member, and further applying a force along the circumferential radial direction to the sealing strip 4, making the sealing strip 4 tightly adhere to the wear-resistant plate 3, making the entire sealing structure more stable and reliable.

[0028] As Figure 2 , Figure 5 and Figure 6As shown in the figure, the adjusting device further includes an axial adjusting component. The axial adjusting component includes a clamping ring 7, twenty-four axial adjusting bolts 12, a second elastic member 102, a second nut 104, and a gasket 14. The clamping ring 7 is a Q235 carbon steel annular plate with a thickness of 10 mm. The specification of the axial adjusting bolt 12 is M16*50, grade 8.8, and its size can be adjusted according to the actual situation. The second elastic member 102 is a spring. The specification of the second nut 104 is M16, grade 8. The specification of the gasket 14 is M16. The clamping ring 7 is located between the outer ring 6 and the wear-resistant plate 3 and on the side of the sleeve 9 away from the stator 2. The outer ring 6 and the wear-resistant plate 3 provide stable support for the clamping ring 7. The clamping ring 7 is provided with twenty-four second threaded holes. The first threaded holes and the second threaded holes are alternately arranged at equal intervals, enhancing the structural stability between the radial adjusting component and the axial adjusting component. The twenty-four axial adjusting bolts 12 are inserted into the second threaded holes and installed on the clamping ring 7. The head of the axial adjusting bolt 12 is close to the stator 2. The screw rod of the axial adjusting bolt 12 passes through the second threaded hole and is fixed by a first nut 103. The second elastic member 102 is sleeved on one end of the screw rod of the axial adjusting bolt 12 that passes through the clamping ring 7. The nut is located at the end of the second elastic member 102 away from the clamping ring 7. The gasket 14 is located between the nut and the second elastic member 102. The projection of the clamping ring 7 along the axis coincides with at least part of the wear-resistant plate 3, ensuring that the wear-resistant plate 3 has a certain stress area. The distance between the end face of the outer ring 6 away from the stator 2 and the nut is less than the natural length of the second elastic member 102, so that the second elastic member 102 is in a compressed state. The second elastic member 102 pushes the clamping plate to move towards the stator 2, thereby applying a circumferential axial force to the sealing strip 4, making the sealing strip 4 tightly adhere to the mounting ring 8, making the entire sealing structure more stable and reliable. By adjusting the radial adjusting component and the axial-radial adjusting component, the sealing strip 4 is kept in a good sealing state with the stator 2 and the rotor 1, so as to achieve the effect of low leakage or even zero leakage, thereby improving the overall processing efficiency of the equipment and achieving the purpose of energy conservation, emission reduction, cost reduction, and efficiency improvement.

[0029] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0030] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An RTO rotary valve with a novel sealing structure, comprising a rotor (1) and a stator (2), characterized in that: A wear-resistant plate (3) is fixedly connected to the outer end face of the rotor (1). An installation ring (8) is fixedly connected to one end face of the stator (2) close to the rotor (1). A sealing strip (4) is detachably connected at the joint of the wear-resistant plate (3) and the installation ring (8). The stator (2) is detachably connected with an adjusting device, and the adjusting device is provided with acting forces on the sealing strip (4) along the circumferential radial direction and the axial direction.

2. The RTO rotary valve with a novel sealing structure according to claim 1, wherein: The adjusting device includes a radial adjusting component. The radial adjusting component includes a plurality of radial adjusting bolts (11), a first nut (103), and a first nut (103). An outer ring (6) is fixedly connected to one end face of the installation ring (8) close to the rotor (1). A first threaded hole is formed in one end face of the outer ring (6) away from the rotor (1). A plurality of the radial adjusting bolts (11) penetrate into the first threaded hole and are detachably connected with the outer ring (6). One end of the radial adjusting bolt (11) penetrating into the threaded hole is fixed by the first nut (103).

3. The RTO rotary valve with a novel sealing structure according to claim 2, characterized in that: The radial adjusting component further includes a plurality of first elastic members (101) and a sleeve (9). The sleeve (9) is located between the outer ring (6) and the sealing strip (4) and abuts against one end of the radial adjusting bolt (11) penetrating into the first threaded hole. The sleeve (9) is sleeved on the first elastic member (101). An inner ring (5) is arranged on one side of the sealing strip (4) close to the first elastic member (101). One end of the first elastic member away from the sleeve (9) abuts tightly against the inner ring (5).

4. The RTO rotary valve with a novel sealing structure according to claim 3, characterized in that: The distance between the inner top wall of the sleeve (9) and the inner ring (5) is less than the length of the first elastic member (101) in the natural state.

5. The RTO rotary valve with a novel sealing structure according to claim 4, characterized in that: The adjusting device further includes an axial adjusting component. The axial adjusting component includes a clamping ring (7) and a plurality of axial adjusting bolts (12). The clamping ring (7) is located between the outer ring (6) and the wear-resistant plate (3) and on the side of the sleeve (9) away from the stator (2). A plurality of second threaded holes are formed in the clamping ring (7). A plurality of the axial adjusting bolts (12) penetrate into the second threaded holes and are detachably connected with the clamping ring (7).

6. The RTO rotary valve with a novel sealing structure according to claim 5, characterized in that: The axial adjusting component further includes a plurality of second elastic members (102), a second nut (104), and a gasket (14). The second elastic member (102) is sleeved on one end of the axial adjusting bolt (12) away from the clamping ring (7). The second nut (104) is located on one end of the second elastic member (102) away from the clamping ring (7). The gasket (14) is located between the second nut (104) and the second elastic member (102).

7. The RTO rotary valve with a novel sealing structure according to claim 6, characterized in that: The distance between the end face of the outer ring (6) away from the stator (2) and the second nut (104) is less than the length of the second elastic member (102) in the natural state.

8. A RTO rotary valve with a novel sealing structure according to claim 5, characterized in that: The projection of the clamping ring (7) along the axial direction coincides with at least a part of the wear-resistant plate (3).

9. The RTO rotary valve with a new sealing structure according to claim 4, characterized in that: The first threaded holes and the second threaded holes are arranged alternately at intervals.

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