Boiler soot blower valve seat ring

Abstract

The utility model relates to a boiler soot blower valve seat ring, and belongs to the technical field of boiler soot blower valve seat rings, the boiler soot blower valve seat ring comprises a valve seat and a valve seat sealing ring, the lower surface of the valve seat sealing ring is provided with an annular groove, the upper surface of the valve seat sealing ring is provided with a pair of telescopic rings, and detachable mounting parts are arranged between the telescopic rings and the valve seat. A plurality of stainless steel springs are arranged between the valve seat sealing ring and the interior of the annular groove, a plurality of supporting rods are arranged on the upper surface of the valve seat sealing ring and penetrate through the annular groove and the valve seat, a movable resistance increasing piece is arranged between the supporting rods and the valve seat, the valve seat sealing ring and the telescopic ring are both circular ring bodies, the annular groove is annular, and the valve seat sealing ring is sleeved with the telescopic ring. The pair of telescopic rings are respectively positioned on the outer sides of the inner ring and the outer ring of the annular groove; according to the valve seat ring of the boiler soot blower, the situation that a traditional valve clack instantly moves upwards to cause hard impact on the valve seat sealing ring, so that the sealing face of the valve seat sealing ring and the valve clack is damaged, and the closing and sealing effect of the valve clack is affected is avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of boiler sootblower valve seat rings, specifically boiler sootblower valve seat rings. Background Technology

[0002] The boiler sootblower lifting valve is an important component of the boiler steam sootblower. It is usually located at the end of the steam sootblower. The outlet end of the lifting valve is connected to the inner pipe of the sootblower through a flange. During the operation of the steam sootblower, the valve opening and closing is controlled to provide the purging medium to the sootblowing pipe at the head of the sootblower. A high-performance sootblower lifting valve can not only ensure the stable operation of the steam sootblower, but also improve the economy and safety of the boiler system. The valve seat ring of the lifting valve is an important component of the boiler sootblower lifting valve. When the valve disc of the lifting valve is closed, the sealing surface of the valve disc is tightly fitted with the valve seat ring to achieve a closed seal.

[0003] Traditionally, the valve seat ring fits tightly against the bottom of the valve seat of the boiler sootblower lifting valve. When the valve disc closes, it moves upward momentarily to fit tightly against the valve seat ring for sealing. However, during this momentary upward movement of the valve disc, it impacts the valve seat ring, causing damage to both the valve disc sealing surface and the valve seat ring sealing surface. This affects the sealing effect of the lifting valve. Therefore, this application designs an improved valve seat ring for boiler sootblower to solve this defect in the prior art. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a valve seat ring for a boiler soot blower.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a boiler sootblower valve seat ring, including a valve seat and a valve seat sealing ring. The lower surface of the valve seat sealing ring is provided with an annular groove, and the upper surface of the valve seat sealing ring is provided with a pair of telescopic rings. A detachable mounting component is provided between the telescopic rings and the valve seat. Multiple stainless steel springs are provided between the valve seat sealing ring and the annular groove. Multiple support rods are provided on the upper surface of the valve seat sealing ring. The support rods pass through the annular groove and the valve seat, and a moving resistance-increasing component is provided between the support rods and the valve seat.

[0006] By adopting the above technical solution, the installation parts and expansion rings connecting the valve seat sealing ring and the valve seat ensure that a closed communication channel system is formed between the valve seat sealing ring and the valve seat. When the valve disc of the boiler soot blower lift valve closes and moves upward, it first contacts and impacts the valve seat sealing ring. At the time of contact, the elastic expansion and contraction of the stainless steel spring in the annular groove and the vertical support movement of the support rod are combined with the movement buffering and resistance increase of the moving resistance component to avoid damage to the sealing surface of the valve seat sealing ring and the valve seat due to impact.

[0007] In a preferred embodiment of this invention, both the valve seat sealing ring and the telescopic ring are circular rings, the annular groove is circular, and a pair of telescopic rings are located on the inner and outer sides of the annular groove, respectively.

[0008] By adopting the above technical solution, it is ensured that the expansion ring assembly seals the annular groove.

[0009] As a preferred embodiment of this utility model, the mounting component includes a pair of sealing grooves and a pair of fixing seats, the fixing seats are connected to the telescopic rings, and the fixing seats fit against the valve seat to seal the sealing grooves.

[0010] The above technical solution uses a fixed seat to connect the valve seat and the expansion ring, which facilitates disassembly and assembly.

[0011] As a preferred embodiment of this utility model, the fixing seat is in the shape of a ring, the sealing groove is in the shape of a ring, and the sealing groove is filled with a sealing rubber ring.

[0012] By adopting the above technical solution, the combination of the sealing groove and the sealing rubber ring ensures the airtightness of the installation of the fixed seat connecting the valve seat.

[0013] As a preferred embodiment of this utility model, the movable resistance-increasing component includes a plurality of resistance-increasing grooves and a plurality of resistance-increasing seats. The resistance-increasing grooves are disposed on the valve seat and communicate with the annular groove, and the resistance-increasing seats are connected to the upper end of the support rod and located inside the resistance-increasing grooves.

[0014] Using the above technical solution, when the valve seat sealing ring is impacted by the valve disc closing, it drives the support rod to move upward, and simultaneously drives the resistance-increasing seat on the support rod to move in the resistance-increasing groove to increase friction and further buffer the impact force.

[0015] As a preferred embodiment of this utility model, the resistance-increasing seat is tightly fitted to the valve seat, and when the stainless steel spring is in a naturally extended state, the resistance-increasing seat and the resistance-increasing groove are not separated.

[0016] By adopting the above technical solution, it is possible to avoid the stainless steel spring from causing the resistance-increasing seat to detach from the resistance-increasing groove and become unable to reset when it extends or retracts.

[0017] As a preferred technical solution of this utility model, the lower surface of the valve seat sealing ring is provided with a plurality of sealing rings whose diameter increases progressively from the inner ring to the outer ring based on the center.

[0018] Using the above technical solution, the sealing rings are distributed in a stepped manner based on the center of the valve seat sealing ring, ensuring that the sealing rings on the valve seat sealing ring and the sealing surface on the valve disc form a stepped seal, thereby improving the sealing effect.

[0019] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0020] 1. The valve seat ring of this boiler sootblower, through the installation parts and expansion ring connecting the valve seat sealing ring and the valve seat, ensures that a sealed communication channel system is formed between the valve seat sealing ring and the valve seat. When the valve disc of the boiler sootblower lift valve closes and moves upward, it first contacts and impacts the valve seat sealing ring. At the time of contact, the elastic expansion and contraction of the stainless steel spring in the annular groove and the vertical support movement of the support rod cause the valve disc to push the valve seat sealing ring to move after contacting it. The stainless steel spring and expansion ring synchronously contract to buffer the impact force. At the same time, the moving resistance increasing part buffers and increases resistance, avoiding the hard impact on the valve seat sealing ring caused by the instantaneous upward movement of the valve disc in the traditional way, which would damage the sealing surface between the valve seat sealing ring and the valve disc and affect the sealing effect of the valve disc closure.

[0021] 2. The valve seat ring of the boiler soot blower is equipped with a sealing ring. The sealing rings are distributed in a stepped manner based on the center of the valve seat sealing ring, which ensures that the sealing ring on the valve seat sealing ring and the sealing surface on the valve disc form a stepped seal, thereby improving the sealing effect. Attached Figure Description

[0022] Figure 1 This is a perspective view of the present utility model;

[0023] Figure 2 This is a cross-sectional perspective view of the present invention;

[0024] Figure 3 This is an enlarged perspective view of point A of this utility model;

[0025] Figure 4 This is a bottom-view perspective view of the present invention;

[0026] Figure 5 This is a side perspective view of the present invention.

[0027] In the diagram: 1. Valve seat; 2. Valve seat sealing ring; 3. Annular groove; 4. Expansion ring; 5. Mounting component; 51. Fixed seat; 52. Sealing groove; 6. Stainless steel spring; 7. Support rod; 8. Moving resistance-increasing component; 81. Resistance-increasing groove; 82. Resistance-increasing seat; 9. Sealing ring. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-3In this embodiment, the boiler sootblower valve seat ring includes a valve seat 1 and a valve seat sealing ring 2 integrated into the boiler sootblower lifting valve body. An annular groove 3 is formed on the lower surface of the valve seat sealing ring 2, centered on the center of the ring. A pair of telescopic rings 4 are fixedly mounted on the upper surface of the valve seat sealing ring 2. Both the valve seat sealing ring 2 and the telescopic rings 4 are annular, with the telescopic rings 4 being retractable rubber rings. The annular groove 3 is circular, with the pair of telescopic rings 4 located on the inner and outer sides of the annular groove 3, respectively. A detachable mounting component 5 is provided between the telescopic rings 4 and the valve seat 1. Multiple annularly distributed stainless steel springs 6 are fixedly mounted between the valve seat sealing ring 2 and the annular groove 3. Multiple support rods 7 are fixedly mounted on the upper surface of ring 2. The support rods 7 pass through the annular groove 3 and valve seat 1. A movable resistance-increasing component 8 is provided between the support rods 7 and valve seat 1. The movable resistance-increasing component 8 includes multiple resistance-increasing grooves 81 and multiple resistance-increasing seats 82. The resistance-increasing grooves 81 are opened on the valve seat 1 and communicate with the annular groove 3. The resistance-increasing seats 82 are connected and fixed to the upper surface of the support rods 7 and are located in the resistance-increasing grooves 81. The resistance-increasing seats 82 are tightly fitted with the valve seat 1 to ensure the friction-increasing resistance effect. When the stainless steel spring 6 is in a naturally extended state, the resistance-increasing seats 82 and the resistance-increasing grooves 81 do not separate from each other, avoiding the extension and contraction of the stainless steel spring 6. After the resistance-increasing seats 82 move and separate from the resistance-increasing grooves 81, they cannot be reset.

[0030] It should be added that the resistance-increasing seat 82 is made of resistance-increasing rubber. The resistance-increasing seat 82 is installed and fixed to the support rod 7 by fastening screws, which facilitates the periodic disassembly and replacement of the resistance-increasing seat 82 to ensure the friction resistance-increasing effect of the resistance-increasing seat 82.

[0031] The principle of the above embodiment is that the mounting part 5 and the telescopic ring 4 connecting the valve seat sealing ring 2 and the valve seat 1 ensure that a closed communication channel system is formed between the valve seat sealing ring 2 and the valve seat 1. When the valve disc of the boiler soot blower lift valve closes and moves upward, it first contacts the valve seat sealing ring 2. As the valve disc closes and moves upward, it pushes the valve seat sealing ring 2 upward. At the same time, it pushes the telescopic ring 4 to contract and compresses the stainless steel spring 6. At the same time, it drives the resistance-increasing seat 82 on the support rod 7 to move in the resistance-increasing groove 81, increasing friction and reducing the impact force on the valve seat sealing ring 2 caused by the instantaneous upward movement of the valve disc when it closes, effectively protecting the sealing contact surface between the valve disc and the valve seat sealing ring 2.

[0032] It should be further added that the mounting component 5 includes a pair of sealing grooves 52 and a pair of fixing seats 51. The fixing seats 51 are connected and fixed to the telescopic ring 4. The fixing seats 51 fit against the valve seat 1 to seal the sealing grooves 52. The fixing seats 51 are in the shape of a ring, and the sealing grooves 52 are in the shape of a ring. The sealing grooves 52 are filled with sealing rubber rings. The fixing seats 51 are installed and fixed to the valve seat 1 by tightening the screw threads.

[0033] The entire connector can be disassembled and replaced from the valve seat 1 by removing the fastening screws on the fixing seat 51. At the same time, the sealing rubber ring in the sealing groove 52 fills the installation gap between the fixing seat 51 and the valve seat 1 to ensure the sealing effect of the installation.

[0034] Please see Figure 4-5 In this embodiment, the lower surface of the valve seat sealing ring 2 is fitted with multiple sealing rings 9 whose diameter increases progressively from the inner ring to the outer ring, based on the principle of sealing the center of the ring together.

[0035] In this embodiment, the sealing rings 9 are distributed in a stepped manner based on the center of the valve seat sealing ring 2, which ensures that the sealing rings 9 on the valve seat sealing ring 2 and the sealing surface on the valve disc form a stepped seal, thereby improving the sealing fit effect between the valve disc sealing surface and the valve seat sealing ring 2.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A boiler sootblower valve seat ring comprising a valve seat and a valve seat seal ring, characterised in that, The lower surface of the valve seat sealing ring is provided with an annular groove, the upper surface of the valve seat sealing ring is provided with a pair of telescopic rings, the telescopic rings and the valve seat are provided with detachable mounting parts, the valve seat sealing ring and the annular groove are provided with a plurality of stainless steel springs, the upper surface of the valve seat sealing ring is provided with a plurality of support rods, the support rods pass through the annular groove and the valve seat, and the support rods and the valve seat are provided with a moving resistance increasing part.

2. The boiler sootblower valve seat ring of claim 1, wherein: The valve seat sealing ring and the telescopic ring are both circular ring bodies, and the annular groove is a circular ring.

3. The boiler sootblower valve seat ring of claim 1, wherein: The mounting part comprises a pair of sealing grooves and a pair of fixing seats, the fixing seat is connected with the telescopic ring, and the fixing seat is sealed by the valve seat.

4. The boiler sootblower valve seat ring of claim 3, wherein: The fixing seat is a circular ring body, the sealing groove is a circular ring, and the sealing groove is filled with a sealing rubber ring.

5. The boiler sootblower valve seat ring of claim 1, wherein: The moving resistance increasing part comprises a plurality of resistance increasing grooves and a plurality of resistance increasing seats, the resistance increasing grooves are arranged on the valve seat and communicate with the annular groove, and the resistance increasing seats are connected with the upper ends of the support rods and located in the resistance increasing grooves.

6. The boiler sootblower valve seat ring of claim 5, characterized by: The resistance increasing seat is closely attached to the valve seat, and when the stainless steel spring is in a natural stretching state, the resistance increasing seat and the resistance increasing groove are not separated from each other.

7. The boiler sootblower valve seat ring of claim 1, wherein: The lower surface of the valve seat sealing ring is provided with a plurality of sealing rings with diameters increasing from the inner ring to the outer ring.

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