Boiler soot blower air valve with long service life

Abstract

The utility model discloses a boiler soot blower air valve with long service life, and relates to the technical field of valves. The air valve comprises an air valve body, the surface of the air valve body is sleeved with a protection assembly, the top of the protection assembly is in threaded connection with a fixing assembly, a restraining assembly is arranged in an inner cavity of the protection assembly, a transmission assembly is arranged in the restraining assembly, and the bottom of the surface of the air valve body is fixedly connected with a limiting block. According to the air valve, the air valve body can be well protected through the protection assembly and prevented from being directly leaked to the outside, so that external collision can be avoided, meanwhile, the top and the bottom of the protection assembly can be rapidly fixed through the fixing assembly and the restraining assembly, the protection assembly has good stability, and the service life of the air valve is prolonged. And meanwhile, the transmission assembly is arranged, so that the restraining assembly can be quickly disassembled and assembled, and the mounting convenience is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves, in particular to an air valve for a boiler sootblower with a long service life. Background Art

[0002] The air valve is the breather of the pipeline and the guarantor of pipeline safety. It is also called a vent valve or an exhaust valve, but it has an air suction function, so it is more accurate to call it an air valve. Air valves are divided into small-diameter air valves with a single exhaust function, also known as trace exhaust valves; large-diameter air valves with both exhaust and intake functions, including high-speed intake and exhaust air valves, compound air valves, etc. Air valves are required in boiler soot blowers to prevent corrosive flue gas from entering the sootblowing pipe. When the sootblowing process is over, the air valve opens to let air into the sootblower. Once the sootblower valve is opened, it is closed by the pressure of the blowing medium.

[0003] A Chinese patent application with publication number CN215172565U discloses an air valve for a soot blower, comprising a valve housing and a valve cover, wherein the inner side of the valve housing and the outer side of the valve cover are both provided with threads, a cavity is formed inside the valve housing and the valve cover, a stainless steel ball is placed in the cavity, the diameter of the cavity is larger than the inner diameter of the valve housing and the valve cover, the outer diameter of the stainless steel ball is smaller than the diameter of the cavity, and larger than the inner diameter of the valve housing and the valve cover, a hole retaining ring is installed on the inner wall of the valve housing, and a positioning block is connected to the center of the hole retaining ring. The utility model has a reasonable structure. When the pressure in the soot blower is lower than that in the outside, the stainless steel ball moves in a direction away from the valve cover. At this time, the stainless steel ball is separated from the inner cavity of the valve cover by the air pressure of the outside, and the air flow enters the soot blower through the cavity, so as to maintain the pressure balance in the soot blower. When the pressure in the soot blower is higher than that in the outside, the stainless steel ball is pushed back to the initial position by the air pressure, so that one end of the stainless steel ball fits with the inner cavity of the valve cover, so that the air pressure of the outside will not enter the soot blower;

[0004] The air valves in the prior art are generally installed directly and exposed without a protective structure, so they are easily damaged by collision with foreign objects, thereby reducing their service life. To this end, we provide a boiler sootblower air valve with a long service life to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a boiler sootblower air valve with a long service life, and solves the problem of the short service life of the air valve due to the lack of a protective structure in the prior art through the cooperation of a protective component and a fixed component.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model discloses an air valve for a boiler sootblower with a long service life, comprising an air valve body, a protective component is sleeved on the surface of the air valve body, a fixing component is threadedly connected to the top of the protective component, a restraining component is arranged in the inner cavity of the protective component, a transmission component is arranged inside the restraining component, and a limiting block is fixedly connected to the bottom of the surface of the air valve body;

[0008] The protection assembly comprises a left protection cover and a right protection cover, the tops of the surfaces of the left protection cover and the right protection cover are fixedly connected to a limit plate, the inner bottoms of the left protection cover and the right protection cover are provided with a bayonet, the bottom of the inner cavity of the left protection cover is fixedly connected to a threaded rod through a bearing, and the bottoms of the inner cavities of the left protection cover and the right protection cover are both fixedly connected to a limit column;

[0009] The fixing assembly includes a fixing ring, which is threadedly connected to the top of the left protective cover and the right protective cover, a first dustproof net and a second dustproof net are placed on both sides of the top of the fixing ring, and a fastening ring is threadedly connected to the top of the fixing ring surface;

[0010] The constraint assembly comprises a constraint ring, a threaded hole and a limiting hole are provided on the surface of the constraint ring, the threaded hole is threadedly connected to the threaded rod, the limiting hole is slidably connected to the limiting column, and lifting plates are fixedly connected to both sides of the constraint ring;

[0011] The transmission assembly includes a driving bevel gear and a driven bevel gear, the driven bevel gear is fixedly connected to the bottom of the threaded rod surface, the driven bevel gear is meshed with the driving bevel gear, the surface of the driving bevel gear is fixedly connected with a transmission shaft, the surface of the transmission shaft is fixedly connected to the inner wall of the left protective cover through a bearing, and the other end of the transmission shaft passes through the outside of the left protective cover.

[0012] The utility model is further configured such that the tops of the surfaces of the left protective cover and the right protective cover are both provided with a first external thread, and the inner wall of the fixing ring is provided with a first internal thread used in conjunction with the first external thread.

[0013] The utility model is further configured such that a through hole passing through the pressure surface is provided on one side opposite to the first dustproof net and the second dustproof net.

[0014] The utility model is further configured that a second external thread is provided on the top of the surface of the fixing ring, and a second internal thread used in conjunction with the second external thread is provided on the inner wall of the fastening ring.

[0015] The utility model is further configured such that the restraint ring includes two semicircular rings, the left semicircular ring has sockets at both ends of the right side, and the right semicircular ring has plug blocks fixedly connected at both ends of the left side for use with the sockets, the surfaces of the sockets and the plug blocks are provided with mounting holes, and the inner cavity of the mounting holes is threadedly connected with bolts.

[0016] The utility model is further configured that a mounting hole for mounting a bearing is provided at the bottom of the surface of the left protective cover.

[0017] The utility model is further configured that one end of the transmission shaft located outside the left protective cover is fixedly connected to a hand wheel, and a non-slip sleeve is provided on the surface of the hand wheel.

[0018] The utility model is further configured such that the front and rear ends of the opposite sides of the left protective cover and the right protective cover are respectively provided with fitting grooves, the inner cavity of the fitting grooves is fitted with connecting strips, and the other side of the connecting strips is respectively fixedly connected to the surfaces of the left protective cover and the right protective cover.

[0019] The utility model has the following beneficial effects:

[0020] 1. The utility model can provide good protection for the air valve body through the protection component, avoid its direct leakage to the outside, thereby avoiding external collision. At the same time, through the set fixing component and constraint component, the top and bottom of the protection component can be quickly fixed, so that the protection component has good stability. At the same time, through the set transmission component, the constraint component can be quickly disassembled and assembled, ensuring the convenience of installation.

[0021] 2. The utility model can filter the air entering the air valve body from the outside through the first dustproof net and the second dustproof net, and can facilitate disassembly and assembly by adopting a restraining ring composed of two semicircular rings, thereby ensuring the convenience of disassembly and assembly, and can facilitate the rotation of the transmission shaft by providing a hand wheel, and can preliminarily connect and fix the left protective cover and the right protective cover by providing staggered design, interlocking grooves and connecting strips, thereby facilitating subsequent fixing work.

[0022] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1The present invention is a structural stereogram of a boiler sootblower air valve with a long service life.

[0025] Figure 2 The invention is a cross-sectional schematic diagram of a boiler sootblower air valve with a long service life.

[0026] Figure 3 The present invention is a schematic diagram of the connection structure between a restraining ring and an air valve body in an air valve of a boiler sootblower with a long service life.

[0027] Figure 4 A boiler sootblower air valve with long service life Figure 3 A is an enlarged schematic diagram.

[0028] Figure 5 It is a three-dimensional schematic diagram of the left protective cover of a boiler sootblower air valve with a long service life.

[0029] Figure 6 The present invention is a top view and cross-sectional schematic diagram of a restraining ring in an air valve of a boiler sootblower with a long service life.

[0030] In the attached drawings: 1. air valve body; 2. limit block; 3. left protective cover; 4. right protective cover; 5. limit plate; 6. bayonet; 7. threaded rod; 8. limit column; 9. fixing ring; 10. first dustproof net; 11. second dustproof net; 12. fastening ring; 13. restraining ring; 14. threaded hole; 15. limit hole; 16. lifting plate; 17. active bevel gear; 18. driven bevel gear; 19. transmission shaft; 20. fitting groove; 21. connecting strip. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on 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.

[0032] For specific embodiment 1, please refer to Figure 1-6The utility model is a boiler sootblower air valve with a long service life, comprising an air valve body 1, a protective assembly is sleeved on the surface of the air valve body 1, a fixing assembly is threadedly connected to the top of the protective assembly, a constraint assembly is arranged in the inner cavity of the protective assembly, a transmission assembly is arranged inside the constraint assembly, and a limiting block 2 is fixedly connected to the bottom of the surface of the air valve body 1; the protective assembly comprises a left protective cover 3 and a right protective cover 4, a limiting plate 5 is fixedly connected to the top of the surfaces of the left and right protective covers 3 and 4, a bayonet 6 is provided at the inner bottom of the left and right protective covers 3 and 4, a threaded rod 7 is fixedly connected to the bottom of the inner cavity of the left protective cover 3 through a bearing, and a limiting column 8 is fixedly connected to the bottom of the inner cavity of the left protective cover 3 and the bottom of the inner cavity of the right protective cover 4; the fixing assembly comprises a fixing ring 9, the fixing ring 9 is threadedly connected to the top of the surfaces of the left and right protective covers 3 and 4, and two fixing rods 8 are placed on both sides of the top of the fixing ring 9. The first dustproof net 10 and the second dustproof net 11, the top of the surface of the fixing ring 9 is threadedly connected with a fastening ring 12; the first dustproof net 10 and the second dustproof net 11 are provided with through holes passing through the pressure surface on the opposite sides, the constraint assembly includes a constraint ring 13, the surface of the constraint ring 13 is provided with a threaded hole 14 and a limiting hole 15, the threaded hole 14 is threadedly connected to the threaded rod 7, the limiting hole 15 is slidably connected to the limiting column 8, and both sides of the constraint ring 13 are fixedly connected with a lifting plate 16; the transmission assembly includes an active bevel gear 17 and a driven bevel gear 18, the driven bevel gear 18 is fixedly connected to the bottom of the surface of the threaded rod 7, the driven bevel gear 18 is meshed with the active bevel gear 17, the surface of the active bevel gear 17 is fixedly connected with a transmission shaft 19, the surface of the transmission shaft 19 is fixedly connected to the inner wall of the left protective cover 3 through a bearing, and the other end of the transmission shaft 19 passes through the outside of the left protective cover 3.

[0033] Specifically: the limit plate 5 is fixedly connected to the bottom of the first external thread, and the limit plate 5 is designed to be a semicircular ring, which can limit the fixing ring 9 to prevent the fixing ring 9 from being separated from the first external thread. The limit hole 15 and the limit column 8 are set to limit the constraint ring 13, which can prevent the constraint ring 13 from rotating with the threaded rod 7, thereby ensuring the stability of its up and down movement.

[0034] For specific embodiment 2, please refer to Figure 1-6 On the basis of the specific embodiment 1, the top of the surface of the left protective cover 3 and the right protective cover 4 is provided with a first external thread, the inner wall of the fixing ring 9 is provided with a first internal thread used in conjunction with the first external thread, the top of the surface of the left protective cover 3 and the right protective cover 4 is provided with a first external thread, the inner wall of the fixing ring 9 is provided with a first internal thread used in conjunction with the first external thread, the top of the surface of the fixing ring 9 is provided with a second external thread, and the inner wall of the fastening ring 12 is provided with a second internal thread used in conjunction with the second external thread.

[0035] Specifically: by setting the first external thread and the first internal thread, the fixing ring 9 can be installed efficiently and quickly, ensuring the convenience of installation, and the setting of the second external thread and the second internal thread can ensure the convenience of installation of the fastening ring 12.

[0036] For specific embodiment 3, please refer to Figure 1-6 On the basis of the specific embodiment 1 and the specific embodiment 2, the restraint ring 13 includes two semicircular rings, the right ends of the left semicircular ring are provided with sockets, the left ends of the right semicircular ring are fixedly connected with plug blocks used in conjunction with the sockets, the surfaces of the sockets and the plug blocks are provided with mounting holes, the inner cavities of the mounting holes are threadedly connected with bolts, the bottom of the surface of the left protective cover 3 is provided with a mounting hole for mounting the bearing, the end of the transmission shaft 19 located outside the left protective cover 3 is fixedly connected with a handwheel, and the surface of the handwheel is provided with an anti-slip sleeve, the front and rear ends of the opposite sides of the left protective cover 3 and the right protective cover 4 are respectively provided with an embedding groove 20, the inner cavity of the embedding groove 20 is embedded with a connecting strip 21, and the other side of the connecting strip 21 is fixedly connected to the surfaces of the left protective cover 3 and the right protective cover 4.

[0037] Specifically: by adopting the restraining ring 13 with two semicircular ring designs, it can be efficiently and quickly disassembled and assembled from the surface of the air valve body 1. At the same time, through the setting of the hand wheel, the transmission component can be conveniently rotated, ensuring the rapid disassembly and assembly work. By setting the staggered design of the engaging groove 20 and the connecting strip 21, the left protective cover 3 and the right protective cover 4 can be preliminarily connected and fixed, so that the subsequent fixing work can be facilitated.

[0038] The working principle of the utility model is as follows: two semicircular rings are sleeved on the bottom of the surface of the air valve body 1, and then connected by bolts to form a restraining ring 13, and then the left protective cover 3 and the right protective cover 4 are sleeved on the surface of the air valve body 1 and the limit block 2 is inserted into the inner cavity of the bayonet 6, and at the same time, the left protective cover 3 and the right protective cover 4 are preliminarily fixed through the fitting groove 20 and the connecting strip 21, and then the threaded hole 14 and the limit hole 15 are preliminarily connected with the threaded rod 7 and the limit column 8 respectively, and then the transmission shaft 19 is driven to rotate by turning the hand wheel, and the transmission shaft 19 drives the active bevel gear 17 to rotate, and the active bevel gear 17 drives The driven bevel gear 18 rotates, and the driven bevel gear 18 drives the threaded rod 7 to rotate, and the threaded rod 7 drives the constraint ring 13 to move downward and sleeve on the bottom of the surface of the left protective cover 3 and the right protective cover 4 to fix the bottom of the left protective cover 3 and the right protective cover 4, and then fix the top of the left protective cover 3 and the right protective cover 4 through the fixing ring 9, and then place the first dustproof net 10 and the second dustproof net 11 on the top of the fixing ring 9 according to the installation position, and then install the fastening ring 12. At this time, the protection assembly can be firmly installed on the surface of the air valve body 1 to provide good protection for the air valve body 1, thereby extending its service life.

[0039] The standard parts used in the present invention can all be purchased from the market and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art. The control method is automatically controlled by a control unit. The control circuit of the control unit can be realized by simple programming by technicians in this field, which belongs to the common knowledge in this field. Therefore, the control method and circuit connection are no longer explained in detail in the present invention.

[0040] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0041] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A boiler sootblower air valve with a long service life, comprising an air valve body (1), characterized in that: The surface of the air valve body (1) is sleeved with a protection component, the top of the protection component is threadedly connected to a fixing component, the inner cavity of the protection component is provided with a constraint component, the interior of the constraint component is provided with a transmission component, and the bottom of the surface of the air valve body (1) is fixedly connected to a limit block (2); the protection component comprises a left protection cover (3) and a right protection cover (4), the tops of the surfaces of the left protection cover (3) and the right protection cover (4) are fixedly connected to a limit plate (5), the inner bottoms of the left protection cover (3) and the right protection cover (4) are provided with a bayonet (6), the bottom of the inner cavity of the left protection cover (3) is fixedly connected to a threaded rod (7) via a bearing, and the bottoms of the inner cavities of the left protection cover (3) and the right protection cover (4) are fixedly connected to a limit column (8); the fixing component comprises a fixing ring (9), the fixing ring (9) is threadedly connected to the tops of the surfaces of the left protection cover (3) and the right protection cover (4), and first protection plates (5) are placed on both sides of the top of the fixing ring (9). The dust net (10) and the second dust net (11), the top of the surface of the fixing ring (9) is threadedly connected to a fastening ring (12); the constraint assembly includes a constraint ring (13), the surface of the constraint ring (13) is provided with a threaded hole (14) and a limiting hole (15), the threaded hole (14) is threadedly connected to the threaded rod (7), the limiting hole (15) is slidably connected to the limiting column (8), and both sides of the constraint ring (13) are fixedly connected to lifting plates (16); the transmission assembly includes The invention comprises a driving bevel gear (17) and a driven bevel gear (18), wherein the driven bevel gear (18) is fixedly connected to the bottom of the surface of the threaded rod (7), the driven bevel gear (18) is meshed with the driving bevel gear (17), the surface of the driving bevel gear (17) is fixedly connected to a transmission shaft (19), the surface of the transmission shaft (19) is fixedly connected to the inner wall of the left protective cover (3) through a bearing, and the other end of the transmission shaft (19) passes through the outside of the left protective cover (3).

2. A boiler sootblower air valve with a long service life according to claim 1, characterized in that: The tops of the surfaces of the left protective cover (3) and the right protective cover (4) are both provided with first external threads, and the inner wall of the fixing ring (9) is provided with first internal threads that cooperate with the first external threads.

3. The boiler sootblower air valve with a long service life according to claim 1, characterized in that: Through holes passing through the pressure surface are provided on opposite sides of the first dustproof net (10) and the second dustproof net (11).

4. The boiler sootblower air valve with a long service life according to claim 1, characterized in that: The top of the surface of the fixing ring (9) is provided with a second external thread, and the inner wall of the fastening ring (12) is provided with a second internal thread used in conjunction with the second external thread.

5. The boiler sootblower air valve with a long service life according to claim 1, characterized in that: The restraining ring (13) comprises two semicircular rings, wherein the left semicircular ring has sockets at both ends of its right side, and plug blocks that cooperate with the sockets are fixedly connected at both ends of its left side of the right semicircular ring, and mounting holes are provided on the surfaces of the sockets and the plug blocks, and bolts are threadedly connected to the inner cavities of the mounting holes.

6. The boiler sootblower air valve with a long service life according to claim 1, characterized in that: A mounting hole for mounting a bearing is provided at the bottom of the surface of the left protective cover (3).

7. The boiler sootblower air valve with a long service life according to claim 1, characterized in that: One end of the transmission shaft (19) located outside the left protective cover (3) is fixedly connected to a hand wheel, and a non-slip sleeve is provided on the surface of the hand wheel.

8. The boiler sootblower air valve with a long service life according to claim 1, characterized in that: The left protective cover (3) and the right protective cover (4) are provided with fitting grooves (20) at the front and rear ends of the opposite sides, respectively. A connecting strip (21) is fitted into the inner cavity of the fitting groove (20), and the other side of the connecting strip (21) is fixedly connected to the surface of the left protective cover (3) and the right protective cover (4), respectively.

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