A mounting structure for a boiler sootblower poppet valve

Abstract

The utility model discloses a kind of installation structure for boiler soot blower poppet valve, it is related to boiler auxiliary equipment technical field.The utility model includes poppet valve body, poppet valve body bottom is fixedly connected with fixed disc, the fixed disc bottom is provided with soot blower body, the fixed disc both sides are provided with clamping assembly, the fixed disc inner chamber is provided with sealing assembly.The utility model clamping assembly is connected by the elastic clamping structure of fixed block and mounting block, when installing, clamping block is extruded and compressed first spring by resistance block, and then clamping block is clamped with protruding block, when disassembling, pull resistance block to remove limit and make first spring reset drive clamping block to separate, compared with traditional bolt connection, fastening member is not needed to be twisted one by one, dismounting operation can be completed quickly in the narrow space of boiler, maintenance working hours is significantly shortened, equipment overhaul efficiency is improved, while through the cooperation of spring and clamping structure, ensure the stability of connection while reducing operation difficulty.

Description

Technical Field

[0001] This utility model belongs to the technical field of boiler auxiliary equipment, and in particular relates to an installation structure for the lifting valve of a boiler soot blower. Background Technology

[0002] During the operation of industrial boilers, ash accumulation on the heating surfaces can significantly reduce heat exchange efficiency, increase energy consumption, and threaten equipment safety. Therefore, it is necessary to regularly remove the ash using a soot blower. As the core control component of the boiler soot blower, the lifting valve is responsible for precisely controlling the on / off state and flow rate of the soot blowing medium. The reliability of its installation structure directly determines the operational stability, maintenance convenience, and overall energy efficiency of the soot blowing system.

[0003] Chinese patent application CN219432568U discloses an installation structure for a lifting valve of a regenerative high-temperature oxidizer, comprising: an oxidizer body and a lifting valve body; the oxidizer body has at least one transverse through-channel; the bottom of the oxidizer body is divided into two chambers for waste gas flow by a partition, namely an upper chamber and a lower chamber; the lifting valve body is installed in the channel and is used to control the connection and closure between the upper and lower chambers. Compared with traditional installation methods, this invention does not protrude from the oxidizer body, nor does it raise the height of the oxidizer body due to the installation of the lifting valve, making the installation of the lifting valve more convenient, facilitating subsequent equipment maintenance, and improving the operating efficiency of the oxidizer.

[0004] While this patent offers advantages in overall equipment height control and furnace exterior simplicity through optimized spatial layout, effectively avoiding interference issues caused by protruding components, the traditional installation structure still has significant drawbacks in the application scenario of boiler soot blower lifting valves. On the one hand, it mostly uses rigid bolt connections for fixation. In the confined working space of the boiler, multiple bolts need to be tightened one by one during disassembly and assembly, which is not only cumbersome but also often causes bolt corrosion and jamming due to high temperatures, significantly increasing maintenance time. On the other hand, the sealing structure lacks dynamic compensation design. The sealing gasket is easily affected by the high-pressure impact and temperature changes of the soot blowing medium over a long period of time, which can lead to elastic decay and edge deformation. However, the existing structure cannot apply continuous pressure to the sealing gasket, ultimately resulting in sealing failure and medium leakage, which seriously affects soot blowing efficiency and system safety.

[0005] To address these issues, we provide an installation structure for the lifting valve of a boiler soot blower. Utility Model Content

[0006] The purpose of this utility model is to provide an installation structure for the lifting valve of a boiler soot blower. By using a snap-fit ​​component and a sealing component, it solves the problems of inconvenient installation and disassembly of the lifting valve of the boiler soot blower and easy deformation of the sealing gasket leading to sealing failure in the prior art.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0008] This utility model relates to an installation structure for a lifting valve of a boiler sootblower, comprising a lifting valve body, a fixing plate fixedly connected to the bottom of the lifting valve body, a sootblower body disposed at the bottom of the fixing plate, snap-fit ​​components on both sides of the fixing plate, a sealing component disposed within the inner cavity of the fixing plate, and a fixing block comprising a fixing block, one side of the fixing block being fixedly connected to the fixing plate, a fixing rod fixedly connected to the inner cavity of the fixing block, a locking block slidably connected to the surface of the fixing rod, a first spring disposed on one side of the locking block, one side of the first spring being fixedly connected to the fixing block, and an installation block engagingly connected to the bottom of the locking block, one side of the installation block being fixedly connected to the sootblower body, the inner cavity of the installation block being slidably connected to the fixing plate. The moving connection has a stop block located on one side of the locking block. A second spring is provided at the bottom of the stop block, and the bottom of the second spring is fixedly connected to the mounting block. There are two locking mechanisms, which are symmetrically distributed on both sides of the fixed plate. This can make the fixed plate bear force evenly, avoid tilting or loosening caused by force on one side, and enhance the stability of the connection between the lifting valve body and the soot blower body. Both sides of the inner cavity of the mounting block are fixedly connected to protrusions, which engage with the locking block. This can form a bidirectional limit on the locking block, preventing it from shifting or detaching under the vibration of the equipment or the impact of the soot blowing medium. This significantly enhances the firmness of the connection structure. Both sides of the stop block are inclined, which can squeeze the locking block and make it engage smoothly with the protrusion when the fixed block is inserted into the mounting block.

[0009] The present invention is further configured such that the sealing assembly includes a sealing gasket, the sealing gasket is located at the top of the soot blower body, a pressure plate is detachably connected to the top of the sealing gasket, a sealing plate is fixedly connected to the top of the pressure plate, the surface of the sealing plate is slidably connected to the fixed plate, a third spring is fixedly connected to the top of the sealing plate, the top of the third spring is fixedly connected to the fixed plate, and there are multiple third springs evenly distributed in the inner cavity of the fixed plate, which can apply all-round balanced pressure to the sealing gasket, avoid weak sealing areas caused by insufficient local pressure, and ensure that the sealing gasket and the contact surface are tightly fitted.

[0010] The present invention is further configured such that sliding grooves are provided on both sides of the inner cavity of the fixed block, and a slider is slidably connected to the inner cavity of the sliding groove. The other side of the slider is fixedly connected to the card block. The setting of the sliding groove and the slider can limit the range of motion and operation mode of the card block.

[0011] The present invention is further configured such that a limiting rod is provided in the inner cavity of the second spring, the top of the limiting rod is fixedly connected to the abutment block, and the bottom of the limiting rod penetrates the inner cavity of the mounting block and extends to the bottom of the mounting block. The limiting rod can prevent the second spring from shifting or twisting during the extension and retraction process, and ensure that the elastic force of the second spring always acts accurately on the abutment block.

[0012] The present invention is further provided with a pull plate at the bottom of the mounting block, and the top of the pull plate is fixedly connected to the limiting rod. The pull plate can increase the contact area between the limiting rod and the hand, and can disperse the pressure on the hand during the pulling operation, avoiding the local pressure caused by the small contact area.

[0013] The present invention is further configured such that a guide rod is provided in the inner cavity of the third spring, the bottom of the guide rod is fixedly connected to the sealing plate, and the top of the guide rod penetrates the inner cavity of the fixed disk and extends to the top of the fixed disk. The guide rod can provide axial guidance for the third spring and prevent it from tilting or twisting during the extension and retraction process.

[0014] The present invention is further configured such that a limiting plate is provided at the top of the fixed plate, and the bottom of the limiting plate is fixedly connected to the guide rod. The limiting plate can limit the range of motion of the guide rod and prevent the guide rod from detaching from the connection point with the fixed plate.

[0015] The present invention is further configured such that the inner cavity of the mounting block is provided with a groove, and one side of the abutment block is slidably connected to the groove, the groove providing precise guidance and limiting for the abutment block.

[0016] The present invention has the following beneficial effects.

[0017] 1. The snap-fit ​​assembly of this utility model achieves connection through the elastic snap-fit ​​structure of the fixing block and the mounting block. During installation, the snap-fit ​​block is squeezed by the abutment block to compress the first spring and then locks with the protrusion. During disassembly, pulling the abutment block releases the limit and the first spring resets, causing the snap-fit ​​block to disengage. Compared with traditional bolt connections, there is no need to tighten the fasteners one by one. Disassembly and assembly operations can be completed quickly in the confined space of the boiler, avoiding the problem of bolt corrosion and jamming under high temperature conditions. This significantly shortens maintenance time and improves equipment maintenance efficiency. At the same time, the cooperation between the spring and the snap-fit ​​structure ensures connection stability while reducing the difficulty of operation, adapting to the frequent maintenance needs under the complex operating conditions of the boiler.

[0018] 2. This utility model continuously applies downward pressure to the sealing plate through a third spring, which is then transmitted to the sealing gasket via the pressure plate to form dynamic compensation pressure. Compared with traditional sealing structures, this design can offset the elastic decay and edge deformation of the sealing gasket caused by long-term high-pressure impact and temperature changes in real time, always maintaining a tight fit between the sealing gasket and the contact surface, effectively avoiding sealing failure and media leakage. This not only ensures the stability of soot blowing efficiency but also reduces the system safety risks caused by leakage. At the same time, the detachable pressure plate design facilitates the replacement and maintenance of the sealing gasket, further improving the practicality of the structure. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0020] Figure 1 This is a perspective view of an installation structure for a lifting valve used in a boiler soot blower.

[0021] Figure 2 This is a perspective view of a snap-fit ​​assembly in an installation structure for a boiler soot blower lifting valve.

[0022] Figure 3 This is a perspective view of a sealing component in an installation structure for a boiler soot blower lifting valve.

[0023] Figure 4 This is an enlarged view of point B in an installation structure for a boiler soot blower lifting valve.

[0024] Figure 5 This is an enlarged view of point A in an installation structure for a lifting valve of a boiler soot blower.

[0025] In the attached diagram: 1. Lifting valve body; 2. Fixing plate; 3. Soot blower body; 4. Snap-fit ​​assembly; 401. Fixing block; 402. Fixing rod; 403. Snap-fit ​​block; 404. First spring; 405. Mounting block; 406. Abutment block; 407. Second spring; 5. Sealing assembly; 501. Sealing gasket; 502. Pressure plate; 503. Sealing plate; 504. Third spring; 6. Slide groove; 7. Sliding block; 8. Limiting rod; 9. Pull plate; 10. Guide rod; 11. Limiting plate; 12. Groove. Detailed Implementation

[0026] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Example 1

[0028] Please see Figure 1-5This utility model is an installation structure for a lifting valve of a boiler soot blower, including a lifting valve body 1, a fixing plate 2 fixedly connected to the bottom of the lifting valve body 1, a soot blower body 3 set at the bottom of the fixing plate 2, a snap-fit ​​assembly 4 on both sides of the fixing plate 2, a sealing assembly 5 in the inner cavity of the fixing plate 2, the snap-fit ​​assembly 4 including a fixing block 401, one side of the fixing block 401 fixedly connected to the fixing plate 2, a fixing rod 402 fixedly connected to the inner cavity of the fixing block 401, a snap-fit ​​block 403 slidably connected to the surface of the fixing rod 402, a first spring 404 set on one side of the snap-fit ​​block 403, one side of the first spring 404 fixedly connected to the fixing block 401, an installation block 405 snap-fitted to the bottom of the snap-fit ​​block 403, one side of the installation block 405 fixedly connected to the soot blower body 3, a stop block 406 slidably connected to the inner cavity of the installation block 405, the stop block 406 located on one side of the snap-fit ​​block 403, a second spring 407 set at the bottom of the stop block 406, the bottom of the second spring 407 fixedly connected to the installation block 405.

[0029] Specifically: There are two locking mechanisms, symmetrically distributed on both sides of the fixed plate 2, which can make the fixed plate 2 bear force evenly, avoid tilting or loosening caused by unilateral force, and enhance the stability of the connection between the lifting valve body 1 and the soot blower body 3. Both sides of the inner cavity of the mounting block 405 are fixedly connected with protrusions, which engage with the locking block 403, forming a bidirectional limit on the locking block 403, preventing it from shifting or detaching under the vibration of the equipment or the impact of the soot blowing medium, significantly enhancing the firmness of the connection structure. Both sides of the abutment block 406 are inclined, which can squeeze the locking block 403 when the fixed block 401 is inserted into the mounting block 405, so that it can smoothly engage with the protrusion.

[0030] Example 2

[0031] Please see Figure 1-5Based on Embodiment 1, the sealing assembly 5 includes a sealing gasket 501, which is located at the top of the soot blower body 3. A pressure plate 502 is detachably connected to the top of the sealing gasket 501, and a sealing plate 503 is fixedly connected to the top of the pressure plate 502. The surface of the sealing plate 503 is slidably connected to the fixed plate 2, and a third spring 504 is fixedly connected to the top of the sealing plate 503. The top of the third spring 504 is fixedly connected to the fixed plate 2. Sliding grooves 6 are provided on both sides of the inner cavity of the fixing block 401, and a slider 7 is slidably connected to the inner cavity of the sliding groove 6. The other side of the slider 7 is fixedly connected to the locking block 403. A limit rod 8 is provided in the inner cavity of the second spring 407. The top of the limiting rod 8 is fixedly connected to the abutment block 406, and the bottom of the limiting rod 8 passes through the inner cavity of the mounting block 405 and extends to the bottom of the mounting block 405. A pull plate 9 is provided at the bottom of the mounting block 405, and the top of the pull plate 9 is fixedly connected to the limiting rod 8. A guide rod 10 is provided in the inner cavity of the third spring 504, and the bottom of the guide rod 10 is fixedly connected to the sealing plate 503. The top of the guide rod 10 passes through the inner cavity of the fixing plate 2 and extends to the top of the fixing plate 2. A limiting plate 11 is provided at the top of the fixing plate 2, and the bottom of the limiting plate 11 is fixedly connected to the guide rod 10. A slot 12 is opened in the inner cavity of the mounting block 405, and one side of the abutment block 406 is slidably connected to the slot 12.

[0032] Specifically: There are multiple third springs 504 evenly distributed in the inner cavity of the fixed plate 2, which can apply all-round balanced pressure to the sealing gasket 501, avoiding weak sealing areas caused by insufficient local pressure, and ensuring that the sealing gasket 501 is tightly attached to the contact surface. The setting of the sliding groove 6 and the slider 7 can limit the range of motion and operation mode of the block 403. The limiting rod 8 can prevent the second spring 407 from shifting or twisting during the extension and retraction process, ensuring that the elastic force of the second spring 407 always accurately acts on the abutment block 406. The pull plate 9 can increase the contact area between the limiting rod 8 and the hand, which can disperse the hand pressure during the pulling operation and avoid the local pressure caused by the small contact area. The guide rod 10 can provide axial guidance for the third spring 504 to prevent it from tilting or twisting during the extension and retraction process. The limiting plate 11 can limit the range of motion of the guide rod 10 to prevent the guide rod 10 from disengaging from the connection with the fixed plate 2. The slot 12 provides precise guidance and limitation for the abutment block 406.

[0033] The working principle of this utility model is as follows: During installation, the fixing block 401 is inserted into the inner cavity of the mounting block 405. When the locking block 403 contacts the abutment block 406, it will be squeezed and moved to one side. When the locking block 403 moves along the fixing rod 402, it compresses the first spring 404. As the locking block 403 gradually enters, it will engage with the protrusions on both sides of the inner cavity of the mounting block 405 under the pressure of the abutment block 406, while its other side will be in contact with the abutment block 406. The abutment block 406 can restrict the position of the locking block 403, forming a double lock with the protrusion. When it needs to be removed, the limiting rod 8 is moved by pulling the pull plate 9. The limiting rod 8 drives the abutment block 406 to slide along the groove 12 and... The locking block 403 is released from its engagement area, and the second spring 407 is compressed when the abutment block 406 moves. At this time, the first spring 404 extends and drives the locking block 403 to reset. After the locking block 403 is released from its engagement area with the mounting block 405, the fixing block 401 can be pulled out, thereby removing the lifting valve body 1 from the soot blower body 3. During use, the third spring 504 continuously pushes the sealing plate 503. The sealing plate 503 applies pressure to the sealing gasket 501 through the pressure plate 502. Even if the sealing gasket 501 is deformed, it will return to its original shape under the pressure of the pressure plate 502, thus avoiding sealing failure.

[0034] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

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