Totally-enclosed vertical gate valve for dust removal pipeline

Abstract

The utility model discloses a totally-enclosed vertical gate valve for a dust removal pipeline, which belongs to the technical field of gate valves and comprises a valve body, a cylinder and a valve plate. An air inlet and an air outlet are formed in the lower portions of the front side and the rear side of the valve body respectively, and a first inserting seam allowing the valve plate to be vertically inserted is formed between the air inlet and the air outlet. The valve plate is slidably mounted in the valve body, the cylinder is mounted at the top of the valve body, a push rod of the cylinder penetrates into the valve body and is connected with the top of the valve plate, and the valve plate is driven by the cylinder to move up and down to open or close the gate valve. A V-shaped dust accumulation groove is formed in the inner side of the bottom of the valve body, a purging opening used for being connected with a purging pipeline is formed in the left side or the right side of the lower portion of the valve body, and the purging opening is communicated with the V-shaped dust accumulation groove. An ash outlet is formed in the bottom of the inner side of the air outlet of the valve body and communicates with the V-shaped ash deposition groove and the first inserting seam. According to the gate valve, the purging structure is additionally arranged on the gate valve for the dust removal pipeline, so that the problem of valve jamming caused by dust accumulation of the gate valve is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to plug-in valve technical field, especially a full -enclosed vertical plug-in valve for dust removal pipeline. BACKGROUND

[0002] Dust removal pipeline is a typical negative pressure pipeline, its working medium is dust-containing (containing coke powder, sintered ore powder and other relatively coarse particles) gas, and the design wind speed of gas flow in the pipeline is generally controlled within 12~18 m / s. The valve installed on the dust removal pipeline is subjected to long-term scouring of high-speed dust gas flow, resulting in blow-through of the valve plate and damage of the sealing surface, thereby reducing the service life of the valve. At the same time, because the gas in the pipeline contains relatively coarse particles, the valve is prone to blockage.

[0003] Chinese patent CN 219796156 U proposes an environmental dust removal pipeline type pneumatic plug-in valve, which comprises a valve body, a pipeline, a semicircular plug-in plate and a gas cylinder. The semicircular plug-in plate is driven by the gas cylinder to move up and down, realizing the opening and closing of the plug-in valve. When the plug-in valve is opened, the plug-in plate is located above the pipeline, avoiding the scouring of dust gas flow. However, since there is a gap between the valve body cavity and the pipeline for the insertion of the semicircular plug-in plate, dust has the opportunity to enter the valve body cavity, and after long-term use, dust will still accumulate, thereby causing blockage.

[0004] Chinese patent CN 216590027 U proposes a plug-in valve with smooth plug-in and good sealing performance. The plug-in valve has good sealing performance, which can to some extent prevent dust from entering the valve body cavity, thereby reducing the probability of valve blockage. However, it still cannot solve the problem of dust accumulation in the gap causing valve blockage.

[0005] Therefore, it is necessary to improve the existing technology by adding a blowing structure to the plug-in valve for dust removal pipeline to regularly perform blowing operation to avoid the problem of dust accumulation causing valve blockage. For this purpose, the present application proposes a full-enclosed vertical plug-in valve for dust removal pipeline. UTILITY MODEL CONTENT

[0006] The utility model proposes a full-enclosed vertical plug-in valve for dust removal pipeline, which adds a blowing structure to the plug-in valve for dust removal pipeline to solve the problem of valve blockage caused by dust accumulation in the plug-in valve.

[0007] To achieve the above-mentioned purpose, the technical scheme adopted by the utility model is as follows:

[0008] The utility model provides a kind of full-closed vertical plug valve for dust removal pipeline, including valve body, cylinder and valve plate, the valve body is full-closed structure, and the lower part of its front and back sides is respectively horizontally provided with air inlet and air outlet, the air inlet and air outlet are spaced apart, and the first slit for the vertical insertion of the valve plate is formed between the air inlet and air outlet, the valve plate is slidably installed in the valve body, the cylinder is installed on the top of the valve body, the push rod thereof penetrates into the valve body and is connected with the top of the valve plate, the valve plate moves up and down under the drive of the cylinder, to realize the opening or closing of plug valve;The inside of the bottom of the valve body has V-shaped ash accumulation groove, and the left side or the right side of the lower part of the valve body is provided with a purge port for connecting the purge pipeline, the purge port is communicated with the V-shaped ash accumulation groove;The bottom of the inside of the air outlet of the valve body is provided with ash outlet, and the ash outlet is communicated with the V-shaped ash accumulation groove and the first slit.

[0009] Further, the valve plate is a single plate structure, and the thickness thereof is 4-6 mm; the width of the valve plate matches the width of the inner cavity of the valve body.

[0010] Further, the air inlet and the air outlet of the valve body are circular, the upper end of the valve plate is rectangular, and the lower end is semicircular, and the diameter is greater than the diameter of the air inlet and the air outlet.

[0011] Further, two partitions are horizontally arranged in the middle of the inner cavity of the valve body, and the two partitions are oppositely arranged to form a second slit for the passage of the valve plate, and a sealing strip is arranged at the second slit; the two partitions divide the inner cavity of the valve body into an upper cavity and a lower cavity, when the plug valve is opened, the valve plate is located in the upper cavity, and when the plug valve is closed, the valve plate is located in the lower cavity and tightly abuts against the front and rear inner walls of the lower cavity.

[0012] Further, when the valve plate drops to the lowest point, the purge port is 0.5-1.0 cm lower than the bottom of the valve plate.

[0013] Further, guide rails are arranged on the left and right sides of the valve body, the guide rails penetrate through the upper cavity and the lower cavity, and the left and right sides of the valve plate are slidably connected with the two guide rails respectively.

[0014] Further, cover plates are detachably installed on the front and back sides of the upper cavity of the valve body.

[0015] Further, one side of the V-shaped ash accumulation groove close to the ash outlet is vertically arranged, and the other side is obliquely arranged; the included angle of the V-shaped ash accumulation groove is an acute angle.

[0016] Further, the included angle of the V-shaped ash accumulation groove is 45°-60°.

[0017] Further, the air inlet and the air outlet of the valve body are connected with flanges.

[0018] With the above technical scheme, the utility model has the following beneficial effects:

[0019] 1. The utility model discloses a plug-in valve is added with the blowing structure in dust removal pipeline, solved the problem that the plug-in valve causes the valve jam because of dust accumulation. Among them, the blowing structure includes blowing port, V -shaped dust depositing groove and ash outlet, when the plug-in valve works, the dust is into the lower cavity of valve body through the first insertion slit, ash outlet, and finally falls into V -shaped dust depositing groove. When the storage ash in V -shaped dust depositing groove reaches a certain degree, close the plug-in valve, use the gas source to blow, because blowing port, V -shaped dust depositing groove and ash outlet are communicated, the storage ash in V -shaped dust depositing groove is blown out through ash outlet, enters the air outlet of valve body, and finally enters the dust removal pipeline, avoids dust accumulation in the valve body.

[0020] 2. The utility model discloses a V-shaped dust depositing groove one side vertical setting, the other side is inclined to set up, and the angle of 45 ° -60 ° is formed between both, so that the storage ash can be better blown up along the inclination angle, improve the blowing effect, make the dust depositing groove be swept cleaner.

[0021] 3. The utility model discloses a valve plate is single board, straight board structure, the lightweight design of valve plate, then reduces the manufacturing cost of valve. When the valve is open, the valve plate is not in the pipeline, which fundamentally eliminates the scouring of high-speed dust in the pipeline on the valve plate. The valve structure is simple, convenient and flexible to operate, and can be quickly cut off. The installation is not limited by the angle, and the size can be adjusted at any time. The valve plate is not easy to jam during movement, which is an ideal device for frequent start and rapid cut-off.

[0022] 4. The utility model discloses a plug-in valve for dust removal negative pressure pipeline, which is a fully enclosed blocking valve, effectively reduces the loss of dust removal fan air volume, improves the dust removal capacity, effectively controls dust overflow, and reduces environmental pollution.

[0023] 5. The utility model discloses a detachable cover plate is arranged on the upper part of the valve body on both sides, which is convenient for the inspection and maintenance of the cylinder and the valve plate. The air inlet and the air outlet of the valve body are provided with flanges, which are convenient for connecting with the pipeline.

[0024] 6. The utility model discloses a partition is arranged in the valve body, which divides the inner cavity of the valve body into an upper cavity and a lower cavity. A sealing strip is arranged between the two cavities to improve the sealing performance and prevent dust from entering the upper cavity. If dust enters the upper cavity, it may adhere to the push rod of the cylinder, which may affect the extension and retraction of the cylinder. After long-term work, the cylinder may be damaged. DRAWINGS

[0025] Figure 1 The utility model discloses a fully enclosed vertical plug-in valve for dust removal pipeline, which is a fully enclosed vertical plug-in valve for dust removal pipeline.

[0026] Figure 2The right view of the full-closed vertical plug-in valve for dust removal pipeline is provided for the embodiment 1 of the utility model;

[0027] Figure 3 For Figure 2 The sectional view at A-A in the middle;

[0028] Figure 4 For Figure 2 The enlarged view of the partial section at B in the middle;

[0029] In the drawing, the marks are: 1-valve body, 2-cylinder, 3-air inlet, 4-air outlet, 5-flange, 6-first insertion gap, 7-cover plate, 8-bolt, 9-baffle, 10-second insertion gap, 11-sealing strip, 12-upper cavity, 13-lower cavity, 14-valve plate, 15-guide rail, 16-V-shaped dust accumulation groove, 17-purging port, 18-dust outlet. DETAILED DESCRIPTION

[0030] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Apparently, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the utility model.

[0031] Embodiment 1

[0032] As Figures 1-4 shown, a full-closed vertical plug-in valve for dust removal pipeline, including valve body 1, cylinder 2 and valve plate 14. The valve body 1 is full-closed structure, its front and back two sides lower part is provided with air inlet 3 and air outlet 4 respectively, air inlet 3 and air outlet 4 are all connected with flange 5, which is convenient for connecting with dust removal pipeline.

[0033] Air inlet 3 and air outlet 4 are arranged at intervals, and the first insertion gap 6 for the vertical insertion of the valve plate 14 is formed between the two. The valve plate 14 is slidingly installed in the valve body 1, the cylinder 2 is installed at the top of the valve body 1, the push rod of the cylinder 2 penetrates into the valve body 1 and is connected with the top of the valve plate 14. The valve plate 14 moves up and down under the drive of the cylinder 2 to realize the opening or closing of the plug-in valve. When the valve plate 14 is inserted into the first insertion gap 6 and moves down to the lowest point, the plug-in valve is closed. When the valve plate 14 leaves the first insertion gap 6, the plug-in valve is completely opened.

[0034] The valve plate 14 is a single plate structure, and the thickness of the valve plate 14 is 4mm-6mm. In the embodiment, the thickness of the valve plate 14 is 5mm. The width of the valve plate 14 matches the width of the inner cavity of the valve body 1. The air inlet 3 and the air outlet 4 of the valve body 1 are circular, the upper end of the valve plate 14 is rectangular, the lower end of the valve plate 14 is semicircular, the diameter of the lower end of the valve plate 14 is larger than the diameter of the air inlet 3 and the air outlet 4, and when the valve plate 14 moves to the lowest point, the valve plate 14 can completely block the air inlet 3 and the air outlet 4.

[0035] The two partition plates 9 are arranged horizontally in the middle of the inner cavity of the valve body 1, and the two partition plates 9 are oppositely arranged to form a second insertion gap 10 for the valve plate 14 to pass through. The second insertion gap 10 is provided with a sealing strip 11 to improve the sealing performance and prevent dust from entering the upper cavity 12. The two partition plates 9 divide the inner cavity of the valve body 1 into the upper cavity 12 and the lower cavity 13. When the plug valve is opened, the valve plate 14 is located in the upper cavity 12. When the plug valve is closed, the valve plate 14 is located in the lower cavity 13 and tightly abuts against the front and rear inner walls of the lower cavity 13, so that the sealing effect is good.

[0036] The valve body 1 is provided with guide rails 15 on the left and right sides of the inner cavity. The guide rails 15 penetrate the upper cavity 12 and the lower cavity 13. The left and right sides of the valve plate 14 are respectively connected with the two guide rails 15 in a sliding mode, so that the stability of the valve plate 14 in the up-down movement is ensured. The valve body 1 is detachably provided with cover plates 7 on the left and right sides of the upper cavity 12. The cover plates 7 are detachably connected with the valve body 1, so that the air cylinder 2 and the valve plate 14 can be easily inspected and maintained. In the embodiment, the cover plates 7 are detachably connected with the valve body 1 through a plurality of bolts 8.

[0037] The valve plate 14 is a single plate and straight plate structure. The lightweight design of the valve plate 14 reduces the manufacturing cost of the valve. When the valve is opened, the valve plate 14 is not in the pipeline, so that the erosion of high-speed dust in the pipeline to the valve plate 14 is fundamentally eliminated. The valve has the advantages of simple structure, convenient and flexible operation, fast cutting, no angle limitation in installation, adjustable size at any time, and difficulty in jamming during the movement of the valve plate 14, and is an ideal equipment for frequent starting and rapid cutting.

[0038] The valve body 1 is provided with a V-shaped dust collecting groove 16 on the inner side of the bottom. A blow-off port 17 for connecting a blow-off pipeline is arranged on the left side or the right side of the lower part of the valve body 1. The blow-off port 17 communicates with the V-shaped dust collecting groove 16. In the embodiment, the blow-off port 17 is arranged on the right side of the lower part of the valve body 1.

[0039] When the valve plate 14 moves to the lowest point, the blow-off port 17 is lower than the bottom of the valve plate 14 by 0.5-1.0cm. In the embodiment, when the valve plate 14 moves to the lowest point, the blow-off port 17 is lower than the bottom of the valve plate 14 by 0.8cm. The valve body 1 is provided with a dust outlet 18 on the inner side of the bottom of the air outlet 4. The dust outlet 18 communicates with the V-shaped dust collecting groove 16 and the first insertion gap 6.

[0040] The V-shaped dust storage groove 16 is vertically arranged on one side close to the dust outlet 18 and is obliquely arranged on the other side, and the included angle of the V-shaped dust storage groove 16 is an acute angle. Specifically, the included angle of the V-shaped dust storage groove 16 is 45°-60°. In the embodiment, the included angle of the V-shaped dust storage groove 16 is 50°. In this way, the stored dust can be better blown along the oblique angle, the blowing effect is improved, and the dust storage groove can be better cleaned.

[0041] When the plug valve works, the dust enters the lower cavity 13 of the valve body 1 through the first insertion gap 6 and the dust outlet 18 and finally falls into the V-shaped dust storage groove 16. When the V-shaped dust storage groove 16 stores dust to a certain degree, the plug valve is closed, and the air source is used for blowing. Since the blowing port 17, the V-shaped dust storage groove 16 and the dust outlet 18 are communicated, the stored dust in the V-shaped dust storage groove 16 is blown out through the dust outlet 18, enters the air outlet 4 of the valve body 1, and finally enters the dust removal pipeline, so that the dust is prevented from accumulating in the valve body 1.

[0042] The plug valve provided by the utility model is a fully-closed blocking valve, is used for a dust removal negative pressure pipeline, effectively reduces dust removal fan air volume loss, improves dust removal capacity, effectively controls dust overflow, and reduces environmental pollution.

[0043] The above description is a detailed description of the preferred and feasible embodiment of the utility model, but the embodiment is not used to limit the patent application range of the utility model, and any equivalent change or modification change completed under the technical spirit of the utility model should belong to the patent range covered by the utility model.

Claims

1. A fully enclosed vertical slide gate valve for dust removal pipelines, comprising a valve body, a cylinder, and a valve plate, wherein the valve body is a fully enclosed structure, with an air inlet and an air outlet horizontally arranged on the lower parts of its front and rear sides, respectively, the air inlet and the air outlet being spaced apart, forming a first insertion slot for vertical insertion of the valve plate, the valve plate being slidably mounted in the valve body, the cylinder being mounted on the top of the valve body, its push rod passing through the valve body and connected to the top of the valve plate, the valve plate moving up and down under the drive of the cylinder to realize the opening or closing of the slide gate valve, characterized in that: The valve body has a V-shaped ash accumulation groove on the inner side of its bottom. A purge port for connecting to a purge pipe is provided on the left or right side of the lower part of the valve body. The purge port communicates with the V-shaped ash accumulation groove. An ash outlet is provided on the bottom inner side of the air outlet of the valve body. The ash outlet communicates with the V-shaped ash accumulation groove and the first insertion slot.

2. The fully enclosed vertical slide gate valve for dust removal pipelines according to claim 1, characterized in that: The valve plate is a single-plate structure with a thickness of 4mm-6mm; the width of the valve plate matches the width of the valve body cavity.

3. The fully enclosed vertical slide gate valve for dust removal pipelines according to claim 1, characterized in that: The valve body has round inlet and outlet ports. The upper end of the valve plate is rectangular and the lower end is semi-circular, with a diameter larger than that of the inlet and outlet ports.

4. A fully enclosed vertical slide gate valve for dust removal pipelines according to claim 1, characterized in that: Two partitions are horizontally arranged in the middle of the inner cavity of the valve body. The two partitions are arranged opposite each other to form a second slot for the valve plate to pass through. A sealing strip is provided at the second slot. The two partitions divide the inner cavity of the valve body into an upper cavity and a lower cavity. When the slide valve is open, the valve plate is located in the upper cavity. When the slide valve is closed, the valve plate is located in the lower cavity and is in close contact with the front and rear inner walls of the lower cavity.

5. A fully enclosed vertical slide gate valve for dust removal pipelines according to claim 4, characterized in that: When the valve plate descends to its lowest point, the purge port is 0.5-1.0 cm below the bottom of the valve plate.

6. A fully enclosed vertical slide gate valve for dust removal pipelines according to claim 4, characterized in that: The valve body is provided with guide rails on both the left and right sides, and the guide rails pass through the upper cavity and the lower cavity. The left and right sides of the valve plate are slidably connected to the two guide rails respectively.

7. A fully enclosed vertical slide gate valve for dust removal pipelines according to claim 4, characterized in that: The valve body has detachable cover plates installed on both the front and rear sides of the upper cavity.

8. A fully enclosed vertical slide gate valve for dust removal pipelines according to claim 1, characterized in that: The V-shaped ash collection trough is vertically arranged on one side near the ash outlet and inclined on the other side; the included angle of the V-shaped ash collection trough is an acute angle.

9. A fully enclosed vertical slide gate valve for dust removal pipelines according to claim 8, characterized in that: The included angle of the V-shaped ash collection groove is 45°-60°.

10. A fully enclosed vertical slide gate valve for dust removal pipelines according to claim 1, characterized in that: Both the air inlet and outlet of the valve body are connected to flanges.

Images