Industrial boiler blowdown valve structure facilitating maintenance

Abstract

The utility model discloses an industrial boiler blowdown valve structure convenient to overhaul, which comprises a valve mechanism, a valve body, a valve ball and a handle, the valve ball is arranged in the valve body, and is connected with the handle through a shaft rod, the valve ball is provided with a blowdown cavity, a filter screen is arranged in the blowdown cavity of the valve ball, and the filter screen is used for blocking impurities; an overhaul mechanism, which comprises an overhaul pipe, the overhaul pipe is embedded on the outer side of the valve body and located on the rotating stroke of the valve ball, the overhaul pipe penetrates the valve body at a single point, and the aperture of the overhaul pipe is consistent with the aperture of the blowdown cavity of the valve ball. The utility model discloses that the blowdown cavity of the valve ball can change the orientation, and the overhaul pipe is used for exposure, so that the filter screen in the valve ball can be conveniently overhauled and cleaned by the staff. The device has a simpler structure, is less affected by the furnace ash, and has a more stable and durable overall working state.

Description

Technical Field

[0001] This utility model relates to the field of boiler blowdown valve technology, and in particular to a structure for an industrial boiler blowdown valve that is easy to maintain. Background Technology

[0002] Although existing boiler blowdown valves have been continuously innovated and developed to basically meet people's needs, there is still room for improvement.

[0003] For example, patent document CN214146650U discloses an easy-to-clean industrial boiler drain valve, relating to the field of drain valve technology. It includes a valve body with a connecting cavity on its top periphery; a valve plate slidably fitted between the inner wall of the connecting cavity and the interior of the valve body; a drain cavity on its bottom periphery; and transmission gears rotatably connected to the top and bottom side walls of the valve body, located between the valve plate and the cleaning frame. Four transmission gears mesh with the valve plate and the cleaning frame. Through the action of the threaded valve stem, the valve plate meshes with the transmission gears, and the transmission gears mesh with the cleaning frame during rotation. This allows a scraper located on the side of the rectangular frame to scrape away dirt from the valve plate surface, while a filter plate intercepts some dirt inside the valve body and discharges it through the drain cavity. This eliminates the need for complete disassembly and cleaning of the drain valve, making it convenient to use and meeting practical needs. The aforementioned boiler blowdown valve uses the method of moving the valve plate up to clean the filter plate at the same time, thus completing the cleaning and maintenance and avoiding valve blockage. However, its overall structure is too complex and the furnace ash can easily cause the gears to jam, affecting the normal movement of the valve plate and resulting in poor overall working stability.

[0004] Therefore, there is an urgent need for an industrial boiler blowdown valve structure that is easy to maintain in order to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an industrial boiler blowdown valve structure that is easy to maintain, and to solve the problem mentioned in the background art of the above-mentioned boiler blowdown valve, which adopts valve plate moving up to clean the filter plate at the same time to complete cleaning and maintenance and avoid valve body blockage. However, its overall structure is too large and furnace ash can easily cause gear jamming, affecting the normal movement of the valve plate and the overall working stability is poor.

[0006] The technical problem to be solved by this utility model is achieved through the following technical solution:

[0007] An industrial boiler blowdown valve structure that is easy to maintain includes:

[0008] A valve mechanism includes a valve body, a valve ball, and a handle. The valve ball is located inside the valve body and is connected to the handle via a shaft. The valve ball has a drain passage cavity, and a filter screen is provided inside the drain passage cavity of the valve ball to block impurities.

[0009] The maintenance mechanism includes a maintenance tube, which is embedded on the outside of the valve body and located on the rotation stroke of the valve ball. The maintenance tube passes through the valve body at a single point, and its diameter is consistent with the diameter of the drain passage of the valve ball.

[0010] Preferably, in the above technical solution, the valve body is provided with two blocks, which are used to block the handle and enable the drain passage of the valve ball to be aligned with the channel of the valve body and the channel of the inspection pipe in sequence.

[0011] Preferably, in the above technical solution, the maintenance mechanism further includes a blocking ring plate, which is disposed in the drain cavity of the valve ball; the surface of the filter screen is provided with a rubber sheet, which is in close contact with the inner wall of the drain cavity of the valve ball.

[0012] Preferably, in the above technical solution, the blocking ring is located at the end of the stroke of the valve ball drain cavity, and the filter screen is in contact with the blocking ring.

[0013] Preferably, in the above technical solution, the surface of the handle is covered with a rubber sleeve.

[0014] Preferably, in the above technical solution, the filter screen is convex or concave in shape.

[0015] The above-mentioned technical solution of this utility model has the following beneficial effects:

[0016] (1) The drain cavity of the valve ball can be rotated and exposed in conjunction with the inspection pipe, so that the staff can easily inspect and clean the filter screen inside the valve ball.

[0017] (2) Compared with the prior art, this device has a simpler structure, is less affected by furnace ash, and has a more stable and durable overall working state. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0019] Figure 1 This is a frontal cross-sectional view of the overall structure of this utility model in the open valve state.

[0020] Figure 2 This is a front view schematic diagram of the overall structure of this utility model.

[0021] Figure 3 This is a top-view cross-sectional view of the overall structure of this utility model in the closed valve state.

[0022] Figure 4 This is a top view of the overall structure of this utility model.

[0023] In the diagram: 100 - Valve mechanism; 110 - Valve body; 111 - Valve ball; 112 - Handle; 113 - Filter screen; 114 - Stop block; 200 - Maintenance mechanism; 210 - Maintenance pipe; 211 - Blocking ring. Detailed Implementation

[0024] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0025] Example 1

[0026] like Figures 1-4 As shown, this application provides an industrial boiler blowdown valve structure that is easy to maintain, including a valve mechanism 100. The valve mechanism 100 includes: a valve body 110 and a valve ball 111 connected to a handle 112 by a shaft and having a blowdown passage cavity. The blowdown passage cavity of the valve ball 111 is provided with a filter screen 113 for blocking impurities. The surface of the handle 112 is covered with a rubber sleeve. Two blocks 114 are connected to the valve body 110 outside the handle 112 to block the handle 112, so that the blowdown passage cavity of the valve ball 111 is aligned with the channel of the valve body 110 and then fully aligned with the channel of the maintenance pipe 210. The filter screen 113 is convex or concave.

[0027] The industrial boiler blowdown valve structure that is easy to maintain also includes a maintenance mechanism 200. The maintenance mechanism 200 includes a maintenance pipe 210 embedded on the outside of the valve body 110 and located on the rotation stroke of the valve ball 111, which passes through the valve body 110 at a single point, and the diameter of the maintenance pipe 210 is the same as that of the blowdown passage of the valve ball 111.

[0028] During sewage discharge, the sewage discharge cavity of valve ball 111 is aligned with the inside of valve body 110, and at this time, filter screen 113 blocks impurities;

[0029] After the sewage discharge is completed, rotate the handle 112 to turn the valve ball 111 so that its sewage discharge passage is aligned with the inspection pipe 210. At this time, the sewage discharge passage of the valve ball 111 and the filter screen 113 can be inspected and cleaned.

[0030] Example 2

[0031] like Figure 2 and Figure 4 As shown, the difference between this embodiment and the above embodiment is that the maintenance mechanism 200 further includes a blocking ring 211 connected to the drain passage of the valve ball 111, and the surface of the filter screen 113 is connected with a rubber sheet that is in close contact with the drain passage of the valve ball 111. The blocking ring 211 is located at the end of the stroke of the drain passage of the valve ball 111, and the filter screen 113 is in contact with the blocking ring 211.

[0032] When replacing, use the hook or magnetic rod to approach the filter screen 113 and pull the filter screen 113 out of the drain passage of the valve ball 111.

[0033] Although the present invention has been disclosed above with reference to embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various different choices and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention is defined by the claims and their equivalents.

Claims

1. A structure for an industrial boiler blowdown valve that is easy to maintain, characterized in that, include: A valve mechanism (100) includes a valve body (110), a valve ball (111), and a handle (112). The valve ball (111) is located inside the valve body (110) and is connected to the handle (112) via a shaft. The valve ball (111) has a drain passage cavity, and a filter screen (113) is provided in the drain passage cavity of the valve ball (111). The filter screen (113) is used to block impurities. The maintenance mechanism (200) includes a maintenance tube (210) which is embedded on the outside of the valve body (110) and located on the rotation stroke of the valve ball (111). The maintenance tube (210) penetrates the valve body (110) at a single point and its diameter is consistent with the diameter of the drain passage of the valve ball (111).

2. The industrial boiler blowdown valve structure for easy maintenance as described in claim 1, characterized in that, The valve body (110) is provided with two stops (114), which are used to block the handle (112) and make the drain passage of the valve ball (111) aligned with the channel of the valve body (110) and the channel of the inspection pipe (210) in sequence.

3. The industrial boiler blowdown valve structure for easy maintenance according to claim 1, characterized in that, The maintenance mechanism (200) also includes a blocking ring (211), which is disposed in the drain cavity of the valve ball (111); the surface of the filter screen (113) is provided with rubber, which is in close contact with the inner wall of the drain cavity of the valve ball (111).

4. The industrial boiler blowdown valve structure for easy maintenance according to claim 3, characterized in that, The blocking ring (211) is located at the end of the stroke of the drain passage of the valve ball (111), and the filter screen (113) is in contact with the blocking ring (211).

5. The industrial boiler blowdown valve structure for easy maintenance according to claim 1, characterized in that, The surface of the handle (112) is covered with a rubber sleeve.

6. The industrial boiler blowdown valve structure for easy maintenance according to claim 1, characterized in that, The filter screen (113) is convex or concave in shape.

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