Anti-scaling valve for desulfurization load adjustable system

Abstract

The utility model relates to the related technical field of valves, in particular to an anti-scaling valve for a desulfurization load adjustable system, which comprises a valve seat, a valve shaft, a valve plate and a valve handle, the valve seat is of a circular channel structure, and pipeline connecting flange plates are integrally formed at the front end and the rear end of the valve seat. An upper valve shaft mounting seat and a lower valve shaft mounting seat are integrally formed on the upper side and the lower side of the valve seat respectively, the upper end and the lower end of the valve shaft are rotationally mounted on the upper valve shaft mounting seat and the lower valve shaft mounting seat respectively, and the valve plate is fixedly mounted on the valve shaft and is closed; according to the anti-scaling valve for the desulfurization load adjustable system, the valve seat, the valve shaft, the valve plate and the valve handle are combined to form the anti-scaling valve for the desulfurization load adjustable system, and the gap is reserved between the valve plate and the inner side wall of the valve seat, so that when a small amount of slaked lime dust is accumulated, the dust can be taken away from a pipeline through air leakage of the gap; therefore, the problems that the valve plate is blocked and cannot be opened and closed due to lime dust scaling are effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field related to valves, in particular to an anti-scaling valve for a desulfurization load adjustable system. Background Art

[0002] With the improvement of energy conservation and environmental protection awareness and standards, more and more industrial tail gas and waste gas are being treated, and environmental protection treatment standards are getting higher and higher. As an important part of the CFB dry desulfurization system, the reliability and stability of the performance of the regulating device of the desulfurization load adjustable system has become an urgent problem for us to solve.

[0003] In the prior art, the regulating device in the desulfurization load adjustable system is usually set according to the selection of the light ventilation butterfly valve commonly used in ordinary smoke and air ducts, which has the following problems:

[0004] When the desulfurization load adjustable system is operating normally, the dust content in the flue gas is low. However, as a desulfurization tower, the high-concentration slaked lime dust flowing into it often enters or accumulates at the regulating device. When a small amount of slaked lime dust accumulates, the dust enters the gap between the valve shaft and the valve seat, reacts to form scale, causing the valve plate to become stuck and unable to open and close.

[0005] When slaked lime dust accumulates in large quantities, the dust will react near the valve seat and the inner wall of the valve plate to form scaling, gradually blocking the entire pipeline, thereby affecting the normal operation of the system. To this end, the utility model proposes an anti-scaling valve for a desulfurization load adjustable system to solve the above problem. Utility Model Content

[0006] The utility model aims to provide an anti-scaling valve for a desulfurization load adjustable system to solve the problems raised in the above background technology.

[0007] To achieve the above object, the utility model provides the following technical solution: an anti-scaling valve for a desulfurization load adjustable system, the anti-scaling valve for a desulfurization load adjustable system comprising:

[0008] The valve seat is a circular channel structure, and the front and rear ends of the valve seat are integrally formed with pipeline connection flanges, and the upper and lower sides of the valve seat are respectively integrally formed with an upper valve shaft mounting seat and a lower valve shaft mounting seat;

[0009] A valve shaft, wherein the upper and lower ends of the valve shaft are rotatably mounted on an upper valve shaft mounting seat and a lower valve shaft mounting seat respectively;

[0010] A valve plate, wherein the valve plate is fixedly mounted on the valve shaft, and when the valve plate is closed, a gap is left between the side edge of the valve plate and the inner side wall of the valve seat;

[0011] A valve handle is fixedly mounted on the upper side end of the valve shaft.

[0012] Preferably, the gap between the valve plate and the valve seat is less than five millimeters.

[0013] Preferably, the upper end of the valve shaft is rotatably connected to an upper valve shaft mounting seat via an upper universal bearing, and the lower end of the valve shaft is rotatably connected to a lower valve shaft mounting seat via a lower universal bearing.

[0014] Preferably, sealing grooves are provided at positions on the valve shaft corresponding to the upper valve shaft mounting seat and the lower valve shaft mounting seat, and sealing rings are embedded and installed in the sealing grooves.

[0015] Preferably, three sealing grooves are formed at the upper and lower ends of the valve shaft, and the sealing ring is a fluororubber high temperature resistant O-type sealing ring.

[0016] Preferably, a mounting groove is provided on the valve shaft, the valve plate is installed in the mounting groove, and the valve plate and the valve shaft are reinforced and connected by reinforcing ribs, and the reinforcing ribs are connected to the valve plate and the valve shaft by screws.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. By setting an anti-scaling valve for the desulfurization load adjustable system composed of a valve seat, a valve shaft, a valve plate and a valve handle, and leaving a gap between the valve plate and the inner wall of the valve seat, when a small amount of slaked lime dust begins to accumulate, air leakage through the gap can take the dust away from the pipeline, thereby effectively avoiding the problem of the valve plate being stuck and unable to open and close due to lime dust scaling;

[0019] 2. By setting the valve shaft as an integral type, the torque on the valve plate is reduced, thereby making the overall strength of the structure higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 This is the front view of the utility model;

[0022] Figure 3 for Figure 2 A schematic diagram of the structure enlargement in the middle;

[0023] Figure 4 It is a half-section view of the utility model;

[0024] Figure 5 for Figure 4 A magnified schematic diagram of the structure at B in the middle;

[0025] Figure 6 This is a schematic diagram of the valve shaft structure of the utility model.

[0026] In the figure: valve seat 1, valve shaft 2, valve plate 3, valve handle 4, lower valve shaft mounting seat 5, upper valve shaft mounting seat 6, pipeline connecting flange 7, lower universal bearing 8, upper universal bearing 9, sealing groove 10, sealing ring 11, mounting groove 12, reinforcing rib 13. DETAILED DESCRIPTION

[0027] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-6 , the utility model provides the following four preferred embodiments:

[0029] Embodiment 1

[0030] A scale-proof valve for a desulfurization load adjustable system, the scale-proof valve for the desulfurization load adjustable system comprising a valve seat 1, a valve shaft 2, a valve plate 3 and a valve handle 4, the valve seat 1 is a circular channel structure, and the front and rear ends of the valve seat 1 are integrally formed with a pipeline connecting flange 7, the upper and lower sides of the valve seat 1 are respectively integrally formed with an upper valve shaft mounting seat 6 and a lower valve shaft mounting seat 5, the upper and lower ends of the valve shaft 2 are respectively rotatably mounted on the upper valve shaft mounting seat 6 and the lower valve shaft mounting seat 5, the valve plate 3 is fixedly mounted on the valve shaft 2, and when the valve plate 3 is closed, a gap is left between the side of the valve plate 3 and the inner wall of the valve seat 1, and the valve handle 4 is fixedly mounted on the upper side end of the valve shaft 2.

[0031] The gap between the valve plate 3 and the valve seat 1 is less than five millimeters. An anti-scaling valve for the desulfurization load adjustable system composed of a valve seat 1, a valve shaft 2, a valve plate 3 and a valve handle 4 is provided, and a gap is left between the valve plate 3 and the inner wall of the valve seat 1. When slaked lime dust begins to accumulate in small amounts, air leakage through the gap can carry the dust away from the pipeline, thereby effectively avoiding the problem of the valve plate 3 being stuck and unable to open and close due to lime dust scaling.

[0032] Embodiment 2

[0033] On the basis of Example 1, the upper end of the valve shaft 2 is rotatably connected to the upper valve shaft mounting seat 6 via an upper universal bearing 9, and the lower end of the valve shaft 2 is rotatably connected to the lower valve shaft mounting seat 5 via a lower universal bearing 8, thereby reducing the resistance encountered by the valve plate 3 during the opening and closing process, thereby making the opening and closing of the valve plate 3 easier.

[0034] Embodiment 3

[0035] On the basis of the second embodiment, sealing grooves 10 are provided at positions on the valve shaft 2 corresponding to the upper valve shaft mounting seat 6 and the lower valve shaft mounting seat 5 , and a sealing ring 11 is embedded and installed in the sealing groove 10 .

[0036] Three sealing grooves 10 are provided at the upper and lower ends of the valve shaft 2. The sealing ring 11 is a high temperature resistant O-type sealing ring made of fluororubber, which improves the overall sealing performance of the valve body structure.

[0037] Embodiment 4

[0038] On the basis of the third embodiment, a mounting groove 12 is opened on the valve shaft 2, the valve plate 3 is installed in the mounting groove 12, and the valve plate 3 and the valve shaft 2 are reinforced and connected by a reinforcing rib 13, and the reinforcing rib 13 and the valve plate 3 and the valve shaft 2 are connected by screws. By arranging the valve shaft 2 as an integral type, the torque of the valve plate 3 is reduced, thereby making the overall strength of the structure higher.

[0039] Although the above describes the illustrative specific implementation methods of the present application so that technicians in this technical field can understand the present application, the present application is not limited to the scope of the specific implementation methods. For ordinary technicians in this technical field, as long as various changes are within the spirit and scope of the present application defined and determined by the attached claims, all application creations using the concept of the present application are protected.

Claims

1. An anti-scaling valve for a desulfurization load adjustable system, characterized in that: The anti-scaling valve for the desulfurization load adjustable system includes: A valve seat (1), wherein the valve seat (1) is a circular channel structure, and the front and rear ends of the valve seat (1) are integrally formed with pipeline connection flanges (7), and the upper and lower sides of the valve seat (1) are respectively integrally formed with an upper valve shaft mounting seat (6) and a lower valve shaft mounting seat (5); A valve shaft (2), wherein the upper and lower ends of the valve shaft (2) are rotatably mounted on an upper valve shaft mounting seat (6) and a lower valve shaft mounting seat (5) respectively; A valve plate (3), wherein the valve plate (3) is fixedly mounted on the valve shaft (2), and when the valve plate (3) is closed, a gap is left between the side edge of the valve plate (3) and the inner side wall of the valve seat (1); A valve handle (4) is fixedly mounted on the upper side end of the valve shaft (2).

2. The anti-scaling valve for a desulfurization load adjustable system according to claim 1, characterized in that: The gap between the valve plate (3) and the valve seat (1) is less than five millimeters.

3. The anti-scaling valve for a desulfurization load adjustable system according to claim 1, characterized in that: The upper end of the valve shaft (2) is rotatably connected to the upper valve shaft mounting seat (6) via an upper universal bearing (9), and the lower end of the valve shaft (2) is rotatably connected to the lower valve shaft mounting seat (5) via a lower universal bearing (8).

4. The anti-scaling valve for a desulfurization load adjustable system according to claim 3, characterized in that: Sealing grooves (10) are provided at positions on the valve shaft (2) corresponding to the upper valve shaft mounting seat (6) and the lower valve shaft mounting seat (5), and a sealing ring (11) is embedded and installed in the sealing groove (10).

5. The anti-scaling valve for a desulfurization load adjustable system according to claim 4, characterized in that: The sealing grooves (10) are provided with three grooves at the upper and lower ends of the valve shaft (2), and the sealing ring (11) is a fluororubber high-temperature resistant O-type sealing ring.

6. The anti-scaling valve for a desulfurization load adjustable system according to claim 1, characterized in that: The valve shaft (2) is provided with a mounting groove (12), the valve plate (3) is mounted in the mounting groove (12), and the valve plate (3) and the valve shaft (2) are reinforced and connected via reinforcing ribs (13), and the reinforcing ribs (13) and the valve plate (3) and the valve shaft (2) are all connected via screws.

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