RTO switching valve sealing device

Abstract

The utility model discloses an RTO switching valve sealing device, and relates to the technical field of switching valve sealing. The valve comprises a valve body, an air cylinder is arranged at the top of the valve body, an air valve rod at the bottom of the air cylinder penetrates into the valve body and is fixedly connected with a valve plate, one side of the valve body is communicated with an air outlet pipe, the other side of the valve body is fixedly connected with a first flange, and a sealing assembly is arranged on the other side of the first flange. The sealing assembly comprises a fixing sleeve, a sealing ring and a second flange, the fixing sleeve is movably arranged between the first flange and the second flange, the sealing ring is movably arranged in the fixing sleeve, and the other side of the second flange is communicated with an air inlet pipe. The connecting assembly is installed on the surface of the nut on the screw rod, under the tension effect of the spring on the connecting assembly, the sleeve rod drives the fixing block to fix the nut, the nut is prevented from rotating due to looseness, the tightness between the first flange and the second flange is improved, and then the sealing effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of switching valve sealing, in particular to an RTO switching valve sealing device. Background Art

[0002] RTO is a highly efficient organic waste gas treatment equipment. Compared with traditional catalytic combustion and direct-fired thermal oxidation furnaces, it has the characteristics of high thermal efficiency, low operating cost, and the ability to treat large air volumes of low-concentration waste gas. When the concentration is slightly higher, it can also perform secondary waste heat recovery, greatly reducing production and operation costs. The main structure of RTO consists of a combustion chamber, a heat storage chamber and a switching valve.

[0003] The connection between the existing RTO switching valve and the pipeline requires installing a sealing ring on the connecting flange on the pipeline, and then fixing the two flanges with bolts and nuts. During use, this fixing method causes the switching valve to vibrate with the equipment, and the nuts on the bolts are prone to loosening, resulting in poor fastening between the flanges and affecting the sealing effect of the sealing ring. To this end, we provide an RTO switching valve sealing device to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide an RTO switching valve sealing device, which solves the problem of poor sealing effect of the switching valve and the pipeline in the prior art through the cooperation of a sealing component, a fixing part and a connecting component.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The utility model is an RTO switching valve sealing device, comprising a valve body, a cylinder is provided on the top of the valve body, a valve stem at the bottom of the cylinder passes through the interior of the valve body and is fixedly connected to a valve plate, one side of the valve body is connected to an air outlet pipe, and the other side of the valve body is fixedly connected to a first flange;

[0007] A sealing assembly is provided on the other side of the first flange, comprising a fixing sleeve, a sealing ring, and a second flange. The fixing sleeve moves between the first flange and the second flange, and the sealing ring moves inside the fixing sleeve. The other side of the second flange is connected to an air intake pipe.

[0008] The surface of the fixed sleeve is provided with a fixing assembly, which includes a fixing block, a sleeve rod, a connecting rod and a spring. The connecting rod is fixed to one side of the fixed sleeve. The sleeve rod and the spring are both sleeved on the surface of the connecting rod. Both sides of the spring are fixedly connected to the fixed sleeve and the sleeve rod respectively. The fixing block is fixed to the surface of the sleeve rod.

[0009] A connecting assembly is provided on one side of the first flange, and the connecting assembly includes a screw and a nut. One end of the screw is threadedly connected to the inner wall of the first flange, and the other end of the screw passes through the outside of the second flange and is fixed to one side of the nut. The nut moves inside the fixed block.

[0010] The present invention is further configured such that a groove is provided on the surface of the air intake pipe, and an inner wall of the groove is movably connected to the surface of the fixing block.

[0011] The utility model is further configured such that a mounting plate is movably connected to the top of the valve body, and the bottom of the cylinder is fixed to the top of the mounting plate.

[0012] The present invention is further configured such that a bolt is threadedly connected to the interior of the mounting plate, and the bottom end of the bolt extends into the interior of the valve body.

[0013] The present invention is further configured such that a perspective window is movably connected to the surface of the valve body via screws, and the perspective window is rectangular.

[0014] The present invention is further configured such that there are two fixing sleeves, and the sealing ring moves between the two fixing sleeves.

[0015] The utility model is further configured such that a support plate is fixedly connected to the bottom of the valve body, and a mounting hole is opened on the surface of the support plate.

[0016] The utility model is further configured such that a mounting groove is provided inside the fixing sleeve, and an inner wall of the mounting groove is movably connected to the surface of the sealing ring.

[0017] The present invention is further configured such that a hexagonal groove is provided inside the fixing block, and the hexagonal groove is movably connected to the surface of the nut.

[0018] The utility model has the following beneficial effects:

[0019] 1. The utility model adopts a connection component installed on the surface of the nut on the screw. Under the action of the spring tension on the connection component, the sleeve rod drives the fixing block to fix the nut, preventing the nut from loosening and rotating, thereby improving the tightness between the first flange and the second flange, and thus improving the sealing effect.

[0020] 2. The utility model adopts a sealing ring installed between the first flange and the second flange, which can improve the sealing effect, and the first flange and the second flange can be fixed by a screw and a nut. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for describing the embodiments.

[0022] Figure 1This is a structural perspective diagram of an RTO switching valve sealing device;

[0023] Figure 2 This is a cross-sectional structural diagram of a valve body in an RTO switching valve sealing device;

[0024] Figure 3 This is a diagram of the screw connection structure in an RTO switching valve sealing device;

[0025] Figure 4 This is a structural diagram of the connection between the sealing ring and the fixed sleeve in an RTO switching valve sealing device;

[0026] Figure 5 This is a structural diagram of the intake pipe in an RTO switching valve sealing device;

[0027] Figure 6 This is a diagram of the nut connection structure in an RTO switching valve sealing device;

[0028] Figure 7 An RTO switching valve sealing device Figure 1 A magnified structural diagram.

[0029] In the accompanying drawings: 1. Valve body; 2. Groove; 3. Inlet pipe; 4. Cylinder; 5. Mounting plate; 6. Valve plate; 7. Outlet pipe; 8. First flange; 9. Fixing sleeve; 10. Sealing ring; 11. Second flange; 12. Bolt; 13. Fixing block; 14. Sleeve rod; 15. Connecting rod; 16. Spring; 17. Nut; 18. Screw; 19. Perspective window; 20. Support plate; 21. Mounting groove; 22. Hexagonal groove. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. The described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Specific embodiment 1

[0032] See also Figure 1-Figure 7The utility model is a sealing device for an RTO switching valve, comprising a valve body 1, a cylinder 4 being provided on the top of the valve body 1, a valve stem at the bottom of the cylinder 4 passing through the interior of the valve body 1 and fixedly connected to a valve plate 6, an outlet pipe 7 being communicated with on one side of the valve body 1, a first flange 8 being fixedly connected on the other side of the valve body 1, a sealing assembly being provided on the other side of the first flange 8, the sealing assembly comprising a fixing sleeve 9, a sealing ring 10 and a second flange 11, the fixing sleeve 9 being movable between the first flange 8 and the second flange 11, the sealing ring 10 being movable inside the fixing sleeve 9, the other side of the second flange 11 being communicated with the inlet pipe 3, a fixed seal being provided on the surface of the fixing sleeve 9 The fixed assembly includes a fixed block 13, a sleeve rod 14, a connecting rod 15 and a spring 16. The connecting rod 15 is fixed to one side of the fixed sleeve 9. The sleeve rod 14 and the spring 16 are both sleeved on the surface of the connecting rod 15. The two sides of the spring 16 are fixedly connected to the fixed sleeve 9 and the sleeve rod 14 respectively. The fixed block 13 is fixed to the surface of the sleeve rod 14. A connecting assembly is provided on one side of the first flange 8. The connecting assembly includes a screw 18 and a nut 17. One end of the screw 18 is threadedly connected to the inner wall of the first flange 8, and the other end of the screw 18 passes through the outside of the second flange 11 and is fixed to one side of the nut 17. The nut 17 moves inside the fixed block 13.

[0033] Specifically: there are two fixing sleeves 9, and the two fixing sleeves 9 form a circular object, which is installed between the first flange 8 and the second flange 11. The sealing ring 10 is installed in the two fixing sleeves 9 to seal the gap between the first flange 8 and the second flange 11 to prevent leakage. The nut 17 adopts a hexagonal nut 17, and the sleeve rod 14, the connecting rod 15 and the spring 16 are horizontally installed on the surface of the fixing sleeve 9. The sleeve rod 14 can move on the surface of the connecting rod 15 under the action of the spring 16, thereby driving the fixed block 13 connected to the sleeve rod 14 to be sleeved on the nut 17, so that the nut 17 will not rotate, so that the screw 18 will not loosen due to vibration. Specific embodiment 2

[0035] See also Figure 1-Figure 7 On the basis of the specific embodiment 1, a groove 2 is opened on the surface of the intake pipe 3, and the inner wall of the groove 2 is movably connected to the surface of the fixing block 13. The top of the valve body 1 is movably connected to the mounting plate 5, and the bottom of the cylinder 4 is fixed to the top of the mounting plate 5. The mounting plate 5 is internally threaded with a bolt 12, and the bottom end of the bolt 12 extends into the interior of the valve body 1. The surface of the valve body 1 is movably connected with a perspective window 19 by a screw. The perspective window 19 is rectangular. There are two fixing sleeves 9. The sealing ring 10 is movable between the two fixing sleeves 9. The bottom of the valve body 1 is fixedly connected to a support plate 20. A mounting hole is opened on the surface of the support plate 20. A mounting groove 21 is opened inside the fixing sleeve 9. The inner wall of the mounting groove 21 is movably connected to the surface of the sealing ring 10. A hexagonal groove 22 is opened inside the fixing block 13, and the hexagonal groove 22 is movably connected to the surface of the nut 17.

[0036] Specifically: the groove 2 is used to limit the fixing block 13 to prevent the fixing block 13 from moving when the nut 17 is fixed. The mounting plate 5 is used to support the cylinder 4. The bolt 12 can install the mounting plate 5 on the valve body 1, so that the cylinder 4 on the mounting plate 5 is easy to disassemble and assemble. The perspective window 19 is used to observe the internal situation of the valve body 1. The support plate 20 and the mounting hole are used to install and fix the valve body 1. The mounting groove 21 is used to install the sealing ring 10. The setting of the hexagonal groove 22 can cooperate with the hexagonal nut 17 to fix the nut 17.

[0037] The working principle of the present invention is as follows: first, the sealing ring 10 is installed in the fixing sleeve 9, and then the fixing sleeve 9 is installed on the screw 18 on the first flange 8, and then the second flange 11 is installed on the screw 18. After the nut 17 is tightened on the screw 18, the fixing sleeve 9 and the first flange 8 and the second flange 11 are connected and fixed, and then the fixing block 13 is pulled, and then the fixing block 13 is selected to rotate the fixing block 13 to the side of the nut 17, and the fixing block 13 is loosened. Under the pulling force of the spring 16, the nut 17 enters the hexagonal groove 22 on the fixing block 13, so that the position of the nut 17 is fixed, thereby avoiding the problem of loosening caused by the rotation of the screw 18 and affecting the sealing effect.

[0038] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to only the specific implementation methods described. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that technicians in the relevant technical field can better understand and utilize the present invention.

Claims

1. An RTO switching valve sealing device, comprising a valve body (1), characterized in that: A cylinder (4) is provided on the top of the valve body (1); a valve stem at the bottom of the cylinder (4) passes through the interior of the valve body (1) and is fixedly connected to a valve plate (6); one side of the valve body (1) is connected to an air outlet pipe (7); and the other side of the valve body (1) is fixedly connected to a first flange (8); A sealing assembly is provided on the other side of the first flange (8), the sealing assembly comprising a fixing sleeve (9), a sealing ring (10) and a second flange (11); the fixing sleeve (9) moves between the first flange (8) and the second flange (11); the sealing ring (10) moves inside the fixing sleeve (9); and the other side of the second flange (11) is connected to an air intake pipe (3); The surface of the fixed sleeve (9) is provided with a fixing assembly, which includes a fixing block (13), a sleeve rod (14), a connecting rod (15) and a spring (16); the connecting rod (15) is fixed to one side of the fixed sleeve (9); the sleeve rod (14) and the spring (16) are both sleeved on the surface of the connecting rod (15); both sides of the spring (16) are fixedly connected to the fixed sleeve (9) and the sleeve rod (14) respectively; the fixing block (13) is fixed to the surface of the sleeve rod (14); A connecting assembly is provided on one side of the first flange (8), and the connecting assembly includes a screw (18) and a nut (17). One end of the screw (18) is threadedly connected to the inner wall of the first flange (8), and the other end of the screw (18) passes through the outside of the second flange (11) and is fixed to one side of the nut (17). The nut (17) moves inside the fixing block (13).

2. The RTO switching valve sealing device according to claim 1, characterized in that: A groove (2) is provided on the surface of the air inlet pipe (3), and the inner wall of the groove (2) is movably connected to the surface of the fixing block (13).

3. The RTO switching valve sealing device according to claim 1, characterized in that: The top of the valve body (1) is movably connected to a mounting plate (5), and the bottom of the cylinder (4) is fixed to the top of the mounting plate (5).

4. The RTO switching valve sealing device according to claim 3, characterized in that: The mounting plate (5) is internally threadedly connected with a bolt (12), and the bottom end of the bolt (12) extends into the interior of the valve body (1).

5. The RTO switching valve sealing device according to claim 1, characterized in that: The surface of the valve body (1) is movably connected with a perspective window (19) via screws, and the perspective window (19) is rectangular.

6. The RTO switching valve sealing device according to claim 1, characterized in that: There are two fixing sleeves (9), and the sealing ring (10) moves between the two fixing sleeves (9).

7. The RTO switching valve sealing device according to claim 1, characterized in that: A support plate (20) is fixedly connected to the bottom of the valve body (1), and a mounting hole is provided on the surface of the support plate (20).

8. The RTO switching valve sealing device according to claim 1, characterized in that: A mounting groove (21) is provided inside the fixing sleeve (9), and the inner wall of the mounting groove (21) is movably connected to the surface of the sealing ring (10).

9. The RTO switching valve sealing device according to claim 1, characterized in that: A hexagonal groove (22) is provided inside the fixing block (13), and the hexagonal groove (22) is movably connected to the surface of the nut (17).

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