High-sealing-performance electrolytic bath chlorine gas valve device

Abstract

The utility model discloses a high-leakproofness electrolytic bath chlorine valve device which comprises a valve body, the lower side of the valve body is mutually connected and fixed with a chlorine header pipe through a flange and a polytetrafluoroethylene pad, and the right side of the valve body is hermetically connected with a side sealing plate through a flange and a polytetrafluoroethylene pad. According to the high-sealing-performance electrolytic bath chlorine valve device, the valve rod of the valve ascends and descends through the screw rod to control opening and closing of the valve, the sealing blind plate of the sealing cover is opened in the process, the sealing blind plate is closed after operation is completed, and full sealing is achieved; the utility model relates to a double-valve dredging device, which aims to seal a central channel of a valve through a dredging rod when the valve is closed, realize dredging of a pipeline channel when the valve is closed, and solve the problem that a closed front-end valve is blocked by accumulated dust in a mutual switching state when double valves are used and cannot be dredged due to the existence of a central valve rod. And free switching of the electrolytic bath chlorine system is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical and metallurgical valves, in particular to a high-sealing electrolytic cell chlorine valve device. Background Art

[0002] Valves are devices used to open and close pipelines, control and regulate the delivery of media, and are important devices in chemical and metallurgical production. Existing valve devices usually use mechanical seals or bellows seals. Mechanical seals have the problem of seal leakage due to wear and corrosion, while bellows seals have the problems of difficult processing, high cost, and difficulty in maintenance.

[0003] In chemical metallurgical production, the generation of many gases is often accompanied by the appearance of some fine solid particles and sublimates. Long-term production operations cause these solid particles and sublimates to accumulate in pipelines and valve channels, causing blockage of pipelines and valves, and will have a great impact on the wear of valve seals. Often, the gases produced by chemical metallurgy are toxic and harmful, and the sealing requirements of valves are extremely high. At this time, we urgently need a high-sealing valve device;

[0004] In the field of multi-stage magnesium electrolytic cell production, the electrolytic cell produces metallic magnesium and chlorine by electrolyzing high-purity magnesium chloride. The production of chlorine is usually accompanied by a large amount of solid particles sublimating and entering the chlorine branch pipe together with the chlorine. For the sake of safety and production continuity, the electrolytic cell is designed with two sets of chlorine pipelines. The switching of these two chlorine pipelines is sometimes achieved by disassembling the eight-shaped blind plate, but this method is very troublesome, the operation time is long and the manpower demand is large; more often, a ball valve is installed in the chlorine branch pipe to achieve it, and the ball valve in the chlorine branch pipe often causes the valve sealing surface to wear due to the presence of solid particle sublimates, resulting in poor sealing. The use of other doors such as stop valves cannot smoothly clear the solid particle sublimates accumulated in the pipeline. At this time, a new high-sealing electrolytic cell chlorine valve device is needed to deal with such problems. Utility Model Content

[0005] The utility model aims to provide a high-sealing electrolytic cell chlorine valve device to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a highly sealed electrolytic cell chlorine valve device, comprising a valve body, wherein the lower side of the valve body is connected and fixed to the chlorine main pipe via a flange and a polytetrafluoroethylene pad, the right side of the valve body is sealed and connected to a side sealing plate via a flange and a polytetrafluoroethylene pad, the left side of the valve body is sealed and connected to a gas collecting hood via a flange and a polytetrafluoroethylene pad, a valve disc is arranged in the valve body, a valve stem is fixed on the valve disc, a sealing cover is connected to the upper end of the valve body, a partition is fixed in the sealing cover, and a threaded rod is connected to a bearing on the partition.

[0007] Preferably, a valve seat is also fixed inside the valve body, and the valve seat and the valve disc cooperate to achieve a sealing effect. Through the sealing of the valve seat and the valve disc, the automatic opening and closing of the pipeline can be achieved to ensure the normal operation of the device.

[0008] Preferably, the valve stem is symmetrically distributed about the center line of the valve disc, and the valve stem and the threaded rod are parallel to each other. Through the action of the valve stem, a basic guarantee can be provided for the stable movement of the valve disc.

[0009] Preferably, a connecting plate is fixed to the upper end of the valve stem, and the connecting plate and the threaded rod are threadedly connected. The threaded connection between the connecting plate and the threaded rod can provide a basic force for the movement of the valve stem and the valve disc.

[0010] Preferably, a protrusion is fixed to the lower end of the sealing cover, and the protrusion and the valve body are nested and connected, and the protrusion is penetrated by the valve stem to form a sliding connection. The sealing cover and the valve body are sealed by a polytetrafluoroethylene pad. The nesting effect between the protrusion and the valve body can facilitate the positioning of the sealing cover and the valve body. The sliding effect between the protrusion and the valve stem can ensure the stability of the valve disc movement.

[0011] Preferably, the upper end of the sealing cover is connected and fixed to the sealing blind plate by bolts, and a polytetrafluoroethylene pad is used between the sealing blind plate and the sealing cover to achieve sealing. Through the above structure, when chlorine leaks through the gap between the protrusions and the valve stems, sealed storage of chlorine can be achieved to prevent chlorine from overflowing and polluting the environment.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the valve stem of the high-sealing electrolytic cell chlorine valve device is raised and lowered by a screw rod to control the opening and closing of the valve. In this process, the sealing blind plate of the sealing cover is opened for operation, and the sealing blind plate is closed after the operation is completed to achieve full sealing. The valve stem of the valve device is designed as a double valve stem on both sides, the purpose of which is to seal the entire channel of the valve center channel through a dredging rod when the valve is closed, so as to achieve dredging of the pipeline channel when the valve is closed, solve the problem that the front end valve closed in the switching state when the double valves are used is clogged by accumulated dust and cannot be dredged due to the existence of the central valve stem, and realize free switching of the electrolytic cell chlorine system. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the front cross-sectional structure of the overall installation of the device of the utility model;

[0014] Figure 2 This is a schematic diagram of the three-dimensional structure of the valve body of the utility model from the front view;

[0015] Figure 3 It is a schematic diagram of the three-dimensional structure of the front cross-section of the valve body of the utility model.

[0016] In the figure: 1, valve body; 101, valve seat; 2, chlorine gas main pipe; 3, side sealing plate; 4, gas collecting hood; 5, valve disc; 6, valve stem; 7, connecting plate; 8, sealing cover; 801, protrusion; 9, partition; 10, threaded rod; 11, sealing blind plate. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-Figure 3 The utility model provides a technical solution: a high-sealing electrolytic cell chlorine valve device, including a valve body 1, the lower side of the valve body 1 is connected and fixed to the chlorine main pipe 2 through a flange and a polytetrafluoro pad, the right side of the valve body 1 is sealed and connected to the side sealing plate 3 through a flange and a polytetrafluoro pad, the left side of the valve body 1 is sealed and connected to the gas collecting cover 4 through a flange and a polytetrafluoro pad, a valve disc 5 is arranged in the valve body 1, a valve stem 6 is fixed on the valve disc 5, a sealing cover 8 is connected to the upper end of the valve body 1, a partition 9 is fixed in the sealing cover 8, and a threaded rod 10 is connected to the bearing on the partition 9.

[0019] The valve stem 6 is symmetrically distributed about the center line of the valve disc 5, and the valve stem 6 and the threaded rod 10 are parallelly distributed; a convex block 801 is fixed to the lower end of the sealing cover 8, and the convex block 801 is nested with the valve body 1, and the convex block 801 is penetrated by the valve stem 6 to form a sliding connection, and the sealing cover 8 and the valve body 1 are sealed by a polytetrafluoroethylene pad; the upper end of the sealing cover 8 is connected and fixed to the sealing blind plate 11 by bolts, and the sealing blind plate 11 and the sealing cover 8 are sealed by a polytetrafluoroethylene pad;

[0020] When using the high-sealing electrolytic cell chlorine valve device, Figure 1-Figure 3 As shown, first, the entire device is installed. At this time, the flange connections of the entire device are sealed by polytetrafluoroethylene pads to ensure the sealing of the entire device. At this time, the chlorine in the chlorine main pipe 2 enters the gas collecting cover 4 through the valve and the conduit to achieve the purification of the chlorine. In the process of using the device, when the chlorine overflows through the gap between the protrusion 801 and the valve stem 6, the sealing cover 8, the partition plate 9 and the valve body 1 constitute a sealing mechanism, which can achieve sealing protection and effectively avoid environmental pollution caused by the overflow of chlorine.

[0021] A valve seat 101 is also fixed inside the valve body 1, and the valve seat 101 cooperates with the valve disc 5 to achieve a sealing effect; a connecting plate 7 is fixed to the upper end of the valve stem 6, and the connecting plate 7 and the threaded rod 10 are threadedly connected;

[0022] During the long-term use of the device, if the solid particles produced by chlorine gas sublimate and block the pipeline seal, Figure 1-Figure 3 As shown, the upper opening of the sealing cover 8 can be opened by removing the sealing blind plate 11, and then by rotating the threaded rod 10, the threaded connection between the threaded rod 10 and the connecting plate 7 can be forced to move downward, thereby driving the valve stem 6 and the valve flap 5 to move downward until the valve flap 5 cooperates with the valve seat 101 to realize the sealing mechanism, thereby preventing the chlorine in the chlorine main pipe 2 from entering the valve, and then by opening the side sealing plate 3, the cleaning device can be easily extended into the valve to realize the dust cleaning effect of the valve, effectively avoiding the valve being blocked and affecting the normal use of the device. This is the working principle of the high-sealing electrolytic cell chlorine valve device.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A highly sealed electrolytic cell chlorine valve device, comprising a valve body (1), wherein the lower side of the valve body (1) is connected and fixed to a chlorine main pipe (2) via a flange and a polytetrafluoroethylene pad, the right side of the valve body (1) is sealed and connected to a side sealing plate (3) via a flange and a polytetrafluoroethylene pad, and the left side of the valve body (1) is sealed and connected to a gas collecting hood (4) via a flange and a polytetrafluoroethylene pad, characterized in that: A valve flap (5) is arranged in the valve body (1), a valve stem (6) is fixed on the valve flap (5), a sealing cover (8) is connected to the upper end of the valve body (1), a partition (9) is fixed in the sealing cover (8), and a threaded rod (10) is connected to a bearing on the partition (9).

2. A highly sealed electrolytic cell chlorine valve device according to claim 1, characterized in that: A valve seat (101) is also fixed on the inner side of the valve body (1), and the valve seat (101) cooperates with the valve flap (5) to achieve a sealing effect.

3. A highly sealed electrolytic cell chlorine valve device according to claim 1, characterized in that: The valve stem (6) is symmetrically arranged with respect to the center line of the valve disc (5), and the valve stem (6) and the threaded rod (10) are arranged in parallel.

4. A highly sealed electrolytic cell chlorine valve device according to claim 1, characterized in that: A connecting plate (7) is fixed to the upper end of the valve stem (6), and the connecting plate (7) and the threaded rod (10) are threadedly connected.

5. A highly sealed electrolytic cell chlorine valve device according to claim 1, characterized in that: A protrusion (801) is also fixed to the lower end of the sealing cover (8), and the protrusion (801) and the valve body (1) are nested and connected, and the protrusion (801) is penetrated by the valve stem (6) to form a sliding connection, and a sealing effect is achieved between the sealing cover (8) and the valve body (1) via a polytetrafluoroethylene pad.

6. A highly sealed electrolytic cell chlorine valve device according to claim 1, characterized in that: The upper end of the sealing cover (8) is connected and fixed to the sealing blind plate (11) by means of bolts, and a sealing effect is achieved between the sealing blind plate (11) and the sealing cover (8) by means of a polytetrafluoroethylene pad.

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