High-sealing-performance straight-through bell jar valve for horizontal pipeline

Abstract

The utility model provides a straight-through bell jar valve with high sealing performance for a horizontal pipeline. Pipeline connecting pieces of the clock cover valve are welded to the two ends of a valve body, a valve body cover is installed at the top of the valve body, an upper left inner sealing plate is welded to the upper left end of the valve body, a lower right inner sealing plate is welded to the lower right end of the valve body, sealing blocks are welded to the lower end of the upper left inner sealing plate and the upper end of the lower right inner sealing plate respectively, and a sealing disc is installed in the valve body cover. A switch display panel and a directional block are fixedly installed on the portion, penetrating out of the valve body cover, of the lifting lead screw, the upper portion of the lifting lead screw penetrates through the valve body cover to be connected with an actuator, and a connecting piece is installed at the lower end of the lifting lead screw and connected with a bell jar. Opening and closing of the bell jar valve are completed in the mode that the actuator drives the lifting lead screw to drive the bell jar to move up and down, a complex transmission mechanism is not needed, the sealing disc and the sealing block are adopted, the sealing faces of the sealing disc and the sealing block are relatively small, good sealing performance is achieved, the bell jar can hover at any position, and the flow and the flow speed of media passing through the bell jar can be adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of machinery and valves, in particular to a high-sealing performance straight-through bell valve for horizontal pipelines. Background Art

[0002] The bell valve is an automatic valve mainly used to control the flow of gas or liquid. Its design principle is similar to a bell. When the valve is opened, the bell goes down to allow the liquid or gas to flow; when the valve is closed, the bell goes up to prevent the liquid or gas from flowing. It can realize automatic control and regulation of flow, pressure and other functions. With the development of industry, the structure and materials of the bell valve are constantly improved and perfected, and it has gradually become a mature and reliable automatic valve. The main features of the bell valve are simple structure, easy operation, good sealing, large flow, long service life, etc. Its working principle is to use the up and down movement of the bell to control the opening and closing of the valve, so as to realize the control of the flow of the medium. The bell valve and the valve stem and other moving parts are made of high-quality materials and are specially treated, so they have high wear resistance and corrosion resistance, and can adapt to various working environments and media requirements.

[0003] The bell valve has a wide range of applications and can be used in chemical, petroleum, metallurgy, medicine and other fields. In the chemical field, the bell valve can be used to control the progress of chemical reactions and the flow of production processes; in the petroleum field, the bell valve can be used to control the pressure of oil wells and the transportation of crude oil; in the food field, the bell valve can be used to control the production and processing of beverages, dairy products, etc. Of course, the use of bell valves also needs to consider some background requirements, such as the nature of the medium, working conditions, flow and pressure requirements, control methods, and safety requirements. It is necessary to select the appropriate bell valve size and structure according to the actual situation, and take corresponding safety measures and monitoring systems to ensure its normal operation and service life.

[0004] In summary, the bell valve is an important automatic valve with broad application prospects and development potential. With the continuous development of industrial automation technology, the application scope and function of the bell valve will be further expanded and improved. Summary of the invention

[0005] The purpose of the utility model is to provide a high sealing performance straight-through bell valve for horizontal pipelines. The technical problem to be solved by the utility model is: using a bell valve to replace the butterfly valve in the prior art, solving the technical problems of the butterfly valve, such as poor sealing performance, low working efficiency, easy damage, frequent maintenance, and easy leakage of the medium.

[0006] The design concept of the utility model is mainly realized through the following points: 1. The traditional rotary switch is changed into an up and down action switch; 2. The seal is achieved through the angle matching between the sealing block and the bell; 3. Two separated inner sealing plates are arranged inside the bell valve to realize the precise control or precise stagnation control of the medium flow in the pipeline.

[0007] To achieve the above purpose, the technical solution of the utility model is:

[0008] A high-sealing performance straight-through bell valve for horizontal pipelines, comprising: an actuator, a lifting screw, a directional block, a sealing disk, a valve body cover, a valve body, a bell hood, an upper left inner sealing plate, a connecting piece, a sealing block, a lower right inner sealing plate, and a switch display panel. The pipeline connecting pieces of the bell hood valve are welded at both ends of the valve body, a valve body cover is installed on the top of the valve body, an upper left inner sealing plate is welded on the upper left end of the valve body, a lower right inner sealing plate is welded on the lower right end of the valve body, a sealing block is welded on the lowest end of the valve body, and the sealing blocks are respectively welded on the lower end of the upper left inner sealing plate and the upper end of the lower right inner sealing plate. A sealing disk is installed in the valve body cover, a switch display panel and a directional block are fixedly installed on the part of the lifting screw that passes through the valve body cover, the upper part of the lifting screw passes through the valve body cover and is connected to the actuator, a connecting piece is installed on the lower end of the lifting screw, the connecting piece is connected to the bell hood, and the pipeline connecting piece is connected to the horizontal pipeline.

[0009] The top of the welded right lower inner sealing plate in the bell valve and the upper inner wall of the valve body form a medium channel, and the lower end of the left upper inner sealing plate and the lower inner wall of the valve body form a medium channel.

[0010] The switch display panel in the bell valve is provided with Arabic numeral scales and the words "open" and "close".

[0011] Figure 1 The single arrow in the middle shows the direction of medium flow, and the double arrow shows the direction of the lifting screw moving up and down.

[0012] Compared with the prior art, the positive effects of the utility model are:

[0013] 1. The bell valve is opened and closed by the actuator driving the lifting screw to drive the bell to move up and down. The operation is simple and does not require a complex transmission mechanism.

[0014] 2. The sealing disc and sealing block used in the bell valve have relatively small sealing surfaces, and the gap between the sealing surface and the valve seat is small, so it has better sealing performance;

[0015] 3. The bell valve has a large flow area, which can realize the passage of a large medium flow in the horizontal pipeline, and is suitable for occasions where a large flow passes through the horizontal pipeline;

[0016] 4. When the actuator of the bell valve moves up and down, the bell can hover at any position of the Arabic numeral scale on the switch display panel to control the opening or closing degree of the medium channel formed by the inner sealing plate and the inner wall of the valve body, and adjust the flow rate and speed of the medium passing through;

[0017] 5. The bell valve's bell, lifting screw and other moving parts are made of high-quality materials and are specially treated, so they have a long service life;

[0018] 6. The bell valve has a relatively simple structure, using only valve body, bell, connector, lifting screw and other components, which is easy to manufacture, replace and repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technology of the utility model, the drawings required for use in the implementation are briefly introduced. The drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0020] The structures, proportions, sizes, etc. of the drawings shown in this specification are only used to match the contents disclosed in the specification so as to facilitate the understanding and reading of those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportion or adjustment in size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the technology of the present invention.

[0021] Figure 1 , schematic diagram of the main structure of a high sealing performance straight-through bell valve;

[0022] Figure 2 , schematic diagram of the side view structure of a high sealing performance straight-through bell valve.

[0023] In the figure: 1. actuator, 2. lifting screw, 3. directional block, 4. sealing disk, 5. valve body cover, 6. valve body, 7. bell jar, 8. upper left inner sealing plate, 9. connecting piece, 10. sealing block, 11. lower right inner sealing plate, 12. pipe connecting piece, 13. switch display panel. DETAILED DESCRIPTION

[0024] The technical solution of the present utility model is further described clearly and completely below in conjunction with the accompanying drawings.

[0025] See attached Figure 1-2, the connection and installation of the device, the valve body cover 5 is installed on the top of the valve body 6, the upper left inner sealing plate 8 is welded to the upper left end of the valve body 6, the lower right inner sealing plate 11 is welded to the lower right end of the valve body 6, the sealing block 10 is welded to the lower end of the upper left inner sealing plate 8 and the upper end of the lower right inner sealing plate 11 respectively, the sealing disk 4 is installed in the valve body cover 5, and the pipe connector 12 is welded to both ends of the valve body 6. The switch display board 13 with Arabic numerals and the words "open" and "close" and the directional block 3 are fixed on the part of the lifting screw 2 passing through the valve body cover 5, the upper part of the lifting screw 2 passes through the valve body cover 5 and is connected to the actuator 1, the lower end of the lifting screw 2 is installed with a connector 9, the connector 9 is connected to the bell 7, and the pipe connector 12 is connected to the horizontal pipeline.

[0026] The top of the welded lower right inner sealing plate 11 in the bell valve and the upper inner wall of the valve body 6 form a medium channel, and the lower end of the upper left inner sealing plate 8 and the lower inner wall of the valve body 6 form a medium channel.

[0027] When in use, when the actuator 1 starts to move upward, the lifting screw 2 starts to lift upward, and the connector 9 at the lower end of the lifting screw 2 drives the bell 7 to lift upward at the same time. At this time, the straight bell valve is in an open state. The bell 7 is at the highest position of the valve body 6. The bell 7 has no obstruction to the medium passage formed by the lower right inner sealing plate 11 and the upper inner wall of the valve body 6, and the lower end of the upper left inner sealing plate 8 and the lower inner wall of the valve body 6. The straight bell valve is opened to the maximum position, and the medium passes through the medium passage formed by the lower right inner sealing plate 11 and the upper inner wall of the valve body 6, and the lower end of the upper left inner sealing plate 8 and the lower inner wall of the valve body 6. The medium passes through the pipe connector 12 and the valve body 6 at the maximum flow rate. The directional block 3 installed on the lifting screw 2 always keeps the bell 7 moving vertically up and down through the reserved holes on the switch display panel 13 to prevent the rotation of the bell 7 from affecting the stability of the straight bell valve. When the hood valve is opened to the highest position, the directional block 3 is at the position of the Chinese character "open" on the switch display panel 13.

[0028] When the actuator 1 starts to move downward, the lifting screw 2 moves downward, and the connecting piece 9 at the lower end of the lifting screw 2 drives the bell 7 to move downward at the same time. When the bell 7 is completely in contact with the sealing plate 10 at the lower end of the upper left inner sealing plate 8 and the sealing plate 10 at the top of the lower right inner sealing plate 11, the bell 7 forms a medium channel closure with the lower end of the upper left inner sealing plate 8 and the lower inner wall of the valve body 6, and the straight-through bell valve is in the closed position. The directional block 3 also moves to the position where the switch display panel 13 is closed. At this time, the medium in the pipeline connecting piece 12 is prohibited from passing through the bell valve.

[0029] During the up and down movement of the actuator 1, it can arbitrarily hover at the position of the Arabic numeral scale marked on the switch display board 13, and the bell cover 7 synchronously hovers at the same position. The hovering position of the bell cover 7 within the stroke can be used to control the opening or closing degree of the medium channel formed by the lower right inner sealing plate 11 and the upper inner wall of the valve body 6, and the lower end of the upper left inner sealing plate 8 and the lower inner wall of the valve body 6, and adjust the flow rate and flow velocity of the medium in the pipeline connector 12 and the horizontal pipeline.

[0030] The above is only a non-limiting implementation method of the utility model, and a large number of embodiments can be derived. For ordinary technicians in this field, without departing from the creative concept of the present invention and without making creative work, several modified and improved embodiments can be made, which all fall within the scope of protection of the present invention.

Claims

1. A high sealing performance straight-through bell valve for horizontal pipelines, comprising: An actuator (1), a lifting screw rod (2), a directional block (3), a sealing disk (4), a valve body cover (5), a valve body (6), a bell jar (7), an upper left inner sealing plate (8), a connecting piece (9), a sealing block (10), a lower right inner sealing plate (11), and a switch display panel (13), wherein the pipe connecting piece (12) of the bell jar valve is welded to both ends of the valve body (6), a valve body cover (5) is installed on the top of the valve body (6), an upper left inner sealing plate (8) is welded to the upper left end of the valve body (6), and a lower right inner sealing plate (11) is welded to the lower right end of the valve body (6). The lower right inner sealing plate (11) and the sealing block (10) are respectively welded to the upper left inner sealing plate (8) and the lower right inner sealing plate (11); a sealing disk (4) is installed in the valve body cover (5); a switch display panel (13) and a directional block (3) are fixedly installed at the part of the lifting screw rod (2) passing through the valve body cover (5); the upper part of the lifting screw rod (2) passes through the valve body cover (5) and is connected to the actuator (1); a connecting piece (9) is installed at the lower end of the lifting screw rod (2); the connecting piece (9) is connected to the bell housing (7); and the pipe connecting piece (12) is connected to the horizontal pipe.

2. The high sealing performance straight-through bell valve for horizontal pipelines according to claim 1 is characterized in that: The top of the welded right lower inner sealing plate (11) in the bell valve and the upper inner wall of the valve body (6) form a medium channel, and the lower end of the left upper inner sealing plate (8) and the lower inner wall of the valve body (6) form a medium channel.

3. The high sealing performance straight-through bell valve for horizontal pipelines according to claim 1 is characterized in that: The switch display panel (13) in the bell valve is provided with Arabic numerals and the words "open" and "closed".

Images