Emergency drain valve for chemical equipment

Abstract

The utility model discloses an emergency drain valve for chemical equipment, which relates to the field of chemical equipment and comprises a drain valve component and a lever mechanism for driving the drain valve component to work. The drain valve assembly comprises a lower section and a core rod from bottom to top, and the lower section is directly or indirectly connected with the tail end of the core rod and can synchronously move along with the core rod; the top end of the core rod is connected and matched with the lever mechanism. The lower section comprises a body directly or indirectly connected with the core rod, a valve head located on the lower portion of the body and a guide part used for guiding the valve head to be inserted into the sealed open hole / groove. In order to realize sealing, the valve head is provided with a conical ring surface with a wide upper part and a narrow lower part. According to the valve, the liquid discharging speed and reliability can be remarkably improved, meanwhile, the sealing design is improved, and stable operation of the valve under the complex working conditions of high temperature, high pressure, corrosive media and the like is ensured.

Description

Technical Field

[0001] This application relates to the field of chemical equipment, specifically to an emergency discharge valve for chemical equipment in complex scenarios, and more particularly to a highly reliable emergency discharge valve for chemical equipment with dual cable drive and guide. Background Technology

[0002] In the chemical industry, storage tanks and reaction equipment are widely used. Reaction equipment, in particular, is the core device for conducting chemical reactions, synthesizing substances, or processing them. To ensure the safety and controllability of the reaction process, reaction equipment and / or storage tanks are typically equipped with pressure relief valves to release gas or vapor when the pressure is too high, preventing explosions or damage to the equipment. However, existing reaction equipment and / or storage tanks generally lack rapid discharge valves in their design, which poses significant safety hazards and operational limitations in practical applications.

[0003] Specifically, in actual production, reaction equipment and / or storage tanks require maintenance and may encounter various unexpected situations, such as reaction runaway, rapid temperature rise, catalyst deactivation, or the generation of harmful byproducts. These situations can lead to the rapid accumulation of liquid or slurry in the reactor, which, if not drained in time, may cause serious accidents such as equipment overpressure, leakage, or even explosion. However, existing reaction equipment is usually only equipped with pressure relief valves, mainly used to release gas pressure, and cannot quickly drain large amounts of liquid. Although liquid discharge can be achieved through external valves, these external valves are usually screw valves or manual valves, which have slow opening and closing speeds and cannot meet the needs of rapid discharge in emergency situations.

[0004] The shortcomings of existing technologies are mainly reflected in the following aspects: First, the design of existing valves focuses on pressure control, used to release gas pressure. However, pressure relief valves cannot effectively meet the need for rapid liquid discharge, especially in cases of runaway reactions or the generation of harmful substances, where rapid liquid discharge is crucial to preventing the escalation of accidents. Second, external valves (such as screw valves) have slow opening and closing speeds due to structural limitations, typically requiring several minutes or even longer to complete the operation. This delay can lead to further deterioration of accidents in emergencies. Furthermore, the installation location and piping design of existing external valves may result in poor liquid discharge, especially with high-viscosity liquids or slurries, significantly reducing discharge efficiency. Under complex operating conditions involving high temperature, high pressure, or corrosive media, the sealing performance and durability of external valves face severe challenges, making them prone to leakage or failure, further increasing safety risks.

[0005] It should be noted that the above background information is provided solely to aid in understanding the inventive concept and technical solution of this application, and does not necessarily constitute prior art. In the absence of clear evidence that the above information was disclosed prior to the filing date of this application, the background information should not be used to evaluate the novelty and inventiveness of this application. Utility Model Content

[0006] The purpose of this application is to overcome at least one deficiency in the prior art and provide an emergency discharge valve for chemical equipment, addressing the problems of insufficient rapid discharge capability, slow opening and closing speed of external valves, and poor sealing performance in existing technologies. This valve significantly improves the speed and reliability of liquid discharge, while also improving the sealing design to ensure stable operation under complex conditions such as high temperature, high pressure, and corrosive media.

[0007] To achieve the above objectives, this application discloses an emergency discharge valve for chemical equipment, which includes a discharge valve assembly and a lever mechanism for driving the discharge valve assembly.

[0008] The discharge valve assembly consists of a lower section and a core rod from bottom to top. The lower section is directly or indirectly connected to the tail end of the core rod and can move synchronously with the core rod. The top end of the core rod is connected and cooperates with the lever mechanism.

[0009] The lower section includes a body directly or indirectly connected to the core rod, a valve head located at the lower part of the body, and a guide portion for guiding the valve head into the sealed opening / groove; to achieve sealing, the valve head has a tapered annular surface that is wider at the top and narrower at the bottom;

[0010] The conical annular surface is provided with a trapezoidal groove, and a lower sealing ring is embedded in the groove. Part of the lower sealing ring extends out and contacts the external surface to achieve the sealing of the valve head against the external hole / groove.

[0011] The main body has a hollow cavity inside, which is filled with a counterweight material. Preferably, the counterweight material is quartz sand.

[0012] The core rod has a connecting part on its shaft, which is connected to a first cable extending from the reactor body. Pulling the first cable can drive the discharge valve assembly to move radially, thereby achieving the relative position of the valve head during movement. Specifically, when the lever mechanism drives the discharge valve assembly downward while the first cable is under tension, the core rod is adjusted and ensured to move axially upward, driving the valve head to insert into the discharge port, thus sealing the discharge port.

[0013] The lever mechanism is connected to the second cable and is used to control the opening and closing of the discharge valve. When the second cable is under tension, the drive mechanism further pulls the core rod through the lever action, ensuring that the valve head moves upward and thus opens the discharge port.

[0014] Furthermore, the guide section is a cross-shaped plate structure.

[0015] Furthermore, the lever mechanism includes a support and a lever arm; the lever arm is hinged to the support via a shaft to form a lever structure with the support as the fulcrum; the resistance end of the lever arm is hinged to the top of the core rod, and the power end is connected to the second cable. The rotation of the lever arm is achieved by the tension of the second cable, thereby driving the movement of the core rod and the valve head.

[0016] Furthermore, the lower sealing ring can be made of fluororubber or silicone rubber to improve sealing performance and service life.

[0017] Compared with existing technologies, this application significantly improves the reliability, motion accuracy, and sealing performance of the equipment through a comprehensive design of dual-cable drive, guiding device, and optimized sealing structure. Specifically, the first cable is directly connected to the core rod, enabling rapid valve opening and meeting the need for rapid material discharge in emergency situations; the conical annular surface design of the valve head, in conjunction with the lower sealing ring, ensures a tight seal and prevents media leakage; the filling of counterweight material (such as quartz sand) and the cross-plate structure design of the guide enhance the stability and motion accuracy of the valve head; the use of high-temperature and corrosion-resistant sealing ring materials (such as fluororubber or silicone rubber) and the lever mechanism enables the equipment to operate stably under complex conditions of high temperature, high pressure, and corrosive media. This application provides a safer, more stable, and more efficient solution for industries such as chemical and pharmaceutical manufacturing, effectively solving the problems of insufficient rapid material discharge capability, slow opening and closing speed of external valves, and poor sealing effect in existing technologies.

[0018] The beneficial effects listed above are not exhaustive of all advantages. Other potential beneficial effects and detailed technical implementation methods will be further disclosed in the embodiments or other descriptive sections of this application. Attached Figure Description

[0019] A better understanding of various aspects of this disclosure will be achieved by reading the following detailed description in conjunction with the accompanying drawings. The positions, dimensions, and extents of the structures shown in the drawings, etc., do not always represent actual positions, dimensions, and extents. In the drawings:

[0020] Figure 1 This is a schematic diagram of the structure disclosed in this application.

[0021] Figure 2 yes Figure 1 Enlarged view of section B in the middle.

[0022] Figure 3 yes Figure 1 Enlarged view of point C in the middle. Detailed Implementation

[0023] The present disclosure will now be described with reference to the accompanying drawings, which illustrate several embodiments of the present disclosure. However, it should be understood that the present disclosure can be presented in many different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure more complete and to fully illustrate the scope of protection of the present disclosure to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide further additional embodiments.

[0024] It should be understood that the same reference numerals denote the same elements in all the accompanying drawings. For clarity, the dimensions of certain features may be modified in the drawings.

[0025] It should be understood that the terminology used in this specification is for describing specific embodiments only and is not intended to limit this disclosure. All terms used in this specification (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. For the sake of brevity and / or clarity, techniques, methods, and devices known to those skilled in the art may not be discussed in detail; however, where appropriate, such techniques, methods, and devices should be considered part of this specification.

[0026] Unless otherwise specified, the singular forms “a,” “the,” and “the” used in this specification include the plural forms. The terms “comprising,” “including,” and “containing” used in this specification indicate the presence of the claimed feature but do not exclude the presence of one or more other features. The term “and / or” used in this specification includes any and all combinations of one or more of the relevant listed items. Example

[0027] This embodiment describes an exemplary structure of a specific implementation of an emergency discharge valve for chemical equipment, with reference to the appendix. Figures 1 to 3 The discharge valve is installed on the reactor body 1. It should be noted that only part of the structure of the reactor 1 is shown in the figure, and the reactor body 1 is not part of the discharge valve in this embodiment.

[0028] To facilitate understanding of this embodiment, the reactor body 1 will be briefly described first. The reactor body 1 includes a top structure 101, a bottom structure 102, and a cylindrical structure (not shown in the figure) connecting the top and bottom. The top structure 101 has a pre-set through groove 104, and the bottom structure 102 has a pre-set discharge port 105 coaxially arranged with the top through groove 104.

[0029] The reactor body 1 has a cylindrical or rectangular cross-section and is made of high-temperature and corrosion-resistant materials, such as fiberglass, to meet the needs of different working conditions.

[0030] The top structure 101 and the bottom structure 102 are integrally formed into a cylindrical structure, ensuring the overall strength and sealing performance of the reactor body 1.

[0031] The discharge valve assembly 2 is located inside the reactor body 1 and is connected to the lever mechanism 3 located in the top structure 101.

[0032] The discharge valve assembly 2 consists of a lower section 201, a connecting rod 202, and a core rod 203 from bottom to top. That is, the core rod 203 is indirectly connected to the lower section 201 through the connecting rod 202.

[0033] The lower section 201 is connected to the tail end of the core rod 203 via a connecting rod 202 and can move synchronously with the core rod 203; the core rod 203 extends upward from the through groove 104 to the reactor body 1 and is connected and cooperated with the lever mechanism 3; the core rod 203 and the through groove 104 achieve a sliding sealing cooperation through the upper sealing ring 204.

[0034] The lower section 201 includes a body 205 connected to the connecting rod 202, a valve head 206, and a guide portion 207 for guiding the valve head 206 into the discharge port 105. The valve head 206 is connected to the body 205 via the guide portion 207, forming a conical annular surface 208 that is wider at the top and narrower at the bottom. Correspondingly, the discharge port 105 is provided with a mating surface 209 that is adapted to the conical annular surface 208. The conical annular surface 208 is provided with a trapezoidal groove 210, and a lower sealing ring 211 is embedded in the groove 210. A portion of the lower sealing ring 211 extends out and contacts the mating surface 209, thereby sealing the discharge port 105 with the valve head 206.

[0035] The body 205 has a hollow cavity 212 inside, which is filled with counterweight material 213. Preferably, the counterweight material 213 is quartz sand, to increase the weight of the valve head 206 and improve the sealing pressure and stability.

[0036] The core rod 203 has a connecting part 214 on its shaft, which is connected to a first cable 215 extending from the reactor body 1. Pulling the first cable 215 can drive the discharge valve assembly 2 to move radially, thereby adjusting the relative position of the valve head 206 during movement. Specifically, when the lever mechanism 3 drives the discharge valve assembly 2 downward, the first cable 215 is subjected to tension, adjusting and ensuring that the core rod 203 moves axially upward, driving the valve head 206 to insert into the discharge port 105, thus sealing the discharge port 105.

[0037] The second cable 216 is connected to the lever mechanism 3 to control the opening and closing of the discharge port 105. When the second cable 216 is subjected to tension, the lever mechanism 3 further pulls the core rod 203 through leverage, ensuring that the valve head 206 moves upward, thereby opening the discharge port 105.

[0038] Based on the above structure, more specifically, the guide portion 207 is a cross-shaped structure used to precisely guide the valve head 206 to the discharge port 105 position to ensure a sealing effect. An upper sealing ring 204 is embedded in the inner wall of the top through groove 104 of the reactor body 1. Specifically, the sealing strip of the upper sealing ring 204 has an elliptical cross-section, increasing the contact surface with the core rod 203 to enhance sealing performance.

[0039] More specifically, based on the above structure, the lever mechanism 3 includes a support 301 and a lever arm 302. The support 301 is fixedly installed on the top structure 101 of the reactor body 1; the lever arm 302 is hinged to the support 301 via a shaft, forming a lever structure with the support 301 as the fulcrum; the resistance end of the lever arm 302 is hinged to the top end of the core rod 203, and the power end is connected to the second cable 216. The rotation of the lever arm 302 is achieved through the tension of the second cable 216, thereby driving the movement of the core rod 203 and the valve head 206. Preferably, the support 301 of the lever mechanism 3 is fixed to the top structure 101 of the reactor body 1 by bolts to ensure its stability and reliability.

[0040] Furthermore, the lower sealing ring 211 and the upper sealing ring 204 can be made of fluororubber or silicone rubber to improve sealing performance and service life. The cross-plate structure of the guide portion 207 can be replaced with other guiding devices, such as guide posts or guide rails, to achieve precise guidance of the valve head 206.

[0041] In operation, when the lever mechanism 3 drives the discharge valve assembly 2 downward, the first cable 215 is pulled, adjusting and ensuring that the core rod 203 moves axially downward, driving the valve head 206 to insert into the discharge port 105, thus sealing the discharge port 105. During the downward movement, the second cable 216 pulls the core rod 203 through the lever mechanism 3, further adjusting the position of the valve head 206 to ensure its alignment and achieve a seal. The valve head 206 is precisely guided to the position of the discharge port 105 by the cross plate structure of the guide part 207, and the lower sealing ring 211 contacts the discharge port 105 to form a seal. The filling of the counterweight material 213 increases the weight of the valve head 206, enabling it to apply greater pressure during the sealing process, thereby improving the sealing performance. The sliding sealing fit between the upper sealing ring 204 and the core rod 203 ensures the sealing performance of the core rod 203 during movement, preventing media leakage.

[0042] The discharge valve in this embodiment significantly improves the reliability, motion accuracy, and sealing performance of the equipment through a comprehensive design that incorporates a dual-cable drive, guiding device, and optimized sealing structure. For example, in industrial fields such as chemical and pharmaceutical manufacturing, this equipment can effectively cope with the challenges of high temperature, high pressure, and corrosive media, ensuring stable operation of the equipment under complex working conditions.

[0043] It should be noted that the component connection methods, material selection, and manufacturing processes not described in detail in this embodiment, such as the specific specifications of bolt connections and the installation method of sealing rings, are all well-known or existing technologies to those skilled in the art and do not need to be further described in detail in this embodiment. Those skilled in the art can select appropriate connection methods, materials, and processes according to actual needs to achieve the technical solution of this embodiment.

[0044] While exemplary embodiments of this disclosure have been described, those skilled in the art will understand that various changes and modifications can be made to the exemplary embodiments of this disclosure without departing from the spirit and scope thereof. Therefore, all changes and modifications are included within the scope of protection of this disclosure as defined by the claims. This disclosure is defined by the appended claims, and equivalents of those claims are also included.

Claims

1. An emergency discharge valve for chemical equipment, characterized in that, This includes the exhaust valve assembly and the lever mechanism that drives the exhaust valve assembly. The discharge valve assembly consists of a lower section and a core rod from bottom to top. The lower section is directly or indirectly connected to the tail end of the core rod and can move synchronously with the core rod; The top of the core rod is connected to the lever mechanism. The lower section includes a body directly or indirectly connected to the core rod, a valve head located at the lower part of the body, and a guide portion for guiding the valve head into the sealed opening / groove; The valve head has a conical annular surface that is wider at the top and narrower at the bottom; The conical annular surface is provided with a trapezoidal groove, and a lower sealing ring is embedded in the groove. Part of the lower sealing ring extends out and contacts the external surface to achieve the sealing of the valve head against the external hole / groove. The body has a hollow cavity inside, which is filled with counterweight material; The core rod has a connecting part on its shaft, which is connected to a first cable extending out of the reactor body. Pulling the first cable can drive the discharge valve assembly to move radially, thereby realizing the relative position of the valve head when it moves. The lever mechanism is connected to the second cable and is used to control the opening and closing of the discharge valve.

2. The emergency discharge valve according to claim 1, characterized in that, The counterweight material is quartz sand.

3. The emergency discharge valve according to claim 1, characterized in that, The guide section has a cross-shaped plate structure.

4. The emergency discharge valve according to claim 1, characterized in that, The lever mechanism includes a support and a lever arm; The lever arm is hinged to the bracket via a shaft, forming a lever structure with the bracket as the fulcrum. The resistance end of the lever arm is hinged to the top of the core rod, and the power end is connected to the second cable. The lever arm rotates through the tension of the second cable, thereby driving the movement of the core rod and the valve head.

5. The emergency discharge valve according to claim 1, characterized in that, The lower sealing ring is made of fluororubber or silicone rubber.

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