Submerged gate opening and closing device
By designing a submerged, concealed rod opening and closing device and adopting a valve structure with specific materials and external pressure bearing mode, the problems of water temperature fluctuation and odor in deep water intake from reservoirs have been solved, achieving efficient utilization of water resources and reliable valve opening and closing, and improving the durability and safety of underwater equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BAOSHAN UNIV
- Filing Date
- 2025-05-23
- Publication Date
- 2026-06-26
AI Technical Summary
The process of drawing water from deep reservoirs can cause water temperature fluctuations that affect the environment and ecology, as well as odor and taste problems. Furthermore, existing valves and opening/closing devices are prone to corrosion and have poor reliability in underwater environments, making it difficult to meet the needs of water conservancy projects.
A submersible, concealed stem opening and closing device is designed, using valve body, valve plate, valve stem and other components made of specific materials and processed by special technology. Combined with external pressure force mode and graded surface water intake architecture, it realizes reliable valve opening and closing and optimized allocation of water resources.
It effectively reduces the negative impact of water temperature fluctuations on the environment, reduces odor threshold concentration, improves water quality and water intake efficiency, and ensures the long-term stable operation and safety of valves in underwater environments.
Smart Images
Figure CN224414481U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a submerged concealed rod opening and closing device, belonging to the technical field of hydraulic valve opening and closing equipment. Background Technology
[0002] In the daily operation and management of reservoirs, the vertical stratification of water temperature is particularly pronounced. This phenomenon not only affects the physical properties of the water within the reservoir but also has a profound impact on its applications in agricultural irrigation, ecological maintenance, and drinking water supply. Specifically, the surface water of the reservoir, directly exposed to sunlight, has a higher temperature, suitable for various biological activities and agricultural water needs. However, as the water depth increases, the sunlight exposure decreases, and the temperature gradually decreases, forming a significant temperature gradient. This temperature difference is particularly pronounced when drawing water from the bottom layer. The low temperature of the bottom water not only limits its direct application in agricultural irrigation, as excessively low irrigation water temperatures may adversely affect crop growth, but may also cause downstream river ecosystems to be impacted by sudden drops in water temperature, affecting the survival and reproduction of aquatic organisms. Simultaneously, the turbidity of the water cannot be ignored. With increasing reservoir depth, the combined effects of factors such as sediment resuspension and organic matter decomposition lead to a significant increase in water turbidity. This not only increases the difficulty and cost of water treatment but may also pose a potential threat to water quality safety. Especially in deep water, due to the long-term accumulation of organic matter and the active metabolism of microorganisms, the concentration of certain compounds exceeds the odor threshold, causing drinking water to have an unpleasant odor or smell, seriously affecting the sensory properties of the water quality. In the field of water conservancy engineering, valves and opening and closing devices that are in underwater environments for a long time and frequently undergo water-land alternation face many problems such as corrosion, decreased reliability, insufficient durability, and safety hazards. At the same time, the corrosion of metal components in underwater environments is often closely related to the structure, material, and manufacturing process of the metal components themselves. Currently, there are no valves and opening and closing devices in water conservancy projects that can fully adapt to such harsh environments. In order to solve the problem of unpleasant odor and smell during deep water intake from reservoirs, improve water intake efficiency and safety, and address the technical challenges faced by valves and opening and closing devices in underwater and water-land alternation environments, this invention proposes a submerged concealed rod opening and closing device, which aims to achieve surface water intake from reservoirs by controlling the surface water intake valve through a switch. This invention can minimize the negative impact of water temperature changes on the environment and ecology, reduce odor threshold concentration, and improve water resource utilization efficiency. Utility Model Content
[0003] The purpose of this invention is to provide a submerged concealed rod opening and closing device to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, the present invention provides the following technical solution: a submersible, concealed stem opening and closing device, comprising a valve body (1), a valve plate (2), a valve stem (3), a valve cover (8), a stuffing box (13), a stuffing gland (14), a handwheel (17), and a portable counter (23); the valve body (1) is provided with a valve cover (8) at its upper part, the valve cover (8) is provided with a stuffing box (13) at its upper part, the stuffing box (13) is provided with a stuffing gland (14) at its upper part, the valve stem (3) is provided with an extended valve stem (21) at its top end, the extended valve stem (21) is provided with a handwheel (17) at its top end, and the portable counter (23) is provided outside the handwheel (17).
[0005] The valve body (1), valve cover (8), stuffing box (13), and stuffing gland (14) are made of QT400 ductile iron, the valve plate (2) is made of 304 stainless steel, and the valve stem (3) and extended valve stem (21) are made of 2Cr13 stainless steel.
[0006] The valve stem nut (4) is made of ZHMn58-2 brass. The nuts (6), (10), (16), and (19) are made of 304 stainless steel. The bolts (7), (11), (15), and (22) are made of 304 stainless steel. The handwheel (17) is made of HT200 tinplate. The gaskets (5) and (18) are made of 304 stainless steel. The weld overlay sealing surface (20) is made of tin bronze. The valve cover (8) and the stuffing box (13) are sealed with flexible graphite gaskets. The components below and above the middle section of the valve cover (8) are sealed with flexible graphite gaskets.
[0007] The components below the middle section of the valve body (1) and valve cover (8) are integrally cast and annealed. The components above the middle section of the valve cover (8) are integrally cast and annealed. The weld overlay sealing surface (20) is welded with tin bronze and then processed. The valve plate (2), valve stem (3), and extended valve stem (21) are made of a single piece of material by plasma cutting and integral processing.
[0008] The working principle of this utility model is as follows: Based on the basic structure of the valve body (1), this utility model sets up a valve cover (8). At the same time, a special stuffing box (13) is configured on the upper part of the valve cover (8), and a stuffing gland (14) is further provided on the top of the stuffing box (13). This design aims to optimize the space required for the lifting and lowering operation of the valve plate (2) and improve the force distribution mode. During the process of the valve plate (2) being lifted and lowered to the valve cover (8), the valve plate (2) and the overall concealed stem opening and closing device change from the internal pressure force mode to the external pressure force mode. Since the external pressure sealing performance has a significant advantage over the internal pressure, this change effectively improves the sealing performance of the valve. In actual operation, the operator is located on the opening and closing platform (24). By turning the handwheel (17), the operator can ensure that the valve stem (3) and the extended valve stem (21) rotate coaxially, thereby driving the valve plate (2) to move up and down to realize the opening or closing of the valve. At the same time, in order to facilitate monitoring of the valve status, a portable counter (23) is equipped on the outside of the handwheel (17). Operators can instantly understand the current status (open / closed) of the valve by observing the information displayed on the portable counter (23).
[0009] This utility model addresses the changing characteristics of reservoir water levels by employing a tiered surface water intake architecture. It supports single-level independent operation or multi-level configuration, with each level having an independently configured opening and closing platform (24) to adapt to water level fluctuations of 0-5 meters. The single-level opening and closing control uses a rigid transmission structure: when opening, rotating the handwheel (17) clockwise drives the valve stem (3) and the extended valve stem (21) to form a synchronous linkage shaft, causing the valve plate (2) to axially rise along the inner wall of the valve body (1) to form a flow channel, allowing water to pass through; during the closing phase, rotating the handwheel (17) counterclockwise causes the valve stem assembly to reverse transmission, driving the valve plate (2) down to the sealing position, thus blocking the water flow path. Multi-level control implements a stepped valve opening and closing operation based on changes in reservoir water level. When the reservoir water level drops, the operator manually rotates the handwheel (17) to open the valve at the higher water level. As the water level further decreases, the lower water level valves (24) gradually emerge from the water surface. At this point, the valves at the corresponding lower water levels are opened, proceeding sequentially from high to low water levels until all lower water level valves are open. Conversely, when the reservoir water level rises, the water level at the lower water level valves gradually increases. When the higher water level valves (24) are about to be submerged, the lower water level valves begin to close, again proceeding sequentially from low to high water levels until all lower water level valves are closed. Through the above orderly operating procedures, the reservoir's tiered surface water intake function can be realized, effectively optimizing the allocation and utilization of water resources.
[0010] The beneficial effects of this invention are as follows: Operators can obtain surface water below the reservoir's water level by controlling the valve via a switch. This not only significantly reduces the potential adverse effects of water temperature fluctuations on the surrounding environment and ecosystem, but also effectively lowers the odor threshold concentration, further improving water quality. Simultaneously, by adjusting the valve body structure, using superior materials and manufacturing processes, and optimizing the sealing and force transmission methods, the technical challenges in pressure resistance, tensile strength, corrosion resistance, and sealing performance are solved, ensuring that the valve and the concealed stem opening and closing device can operate stably in the underwater environment for a long time, achieving reliable opening and closing operations. Attached Figure Description
[0011] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0012] Figure 1 This is a schematic diagram of the structure of this utility model;
[0013] Figure 2 This is a cross-sectional view of the installation of this utility model;
[0014] Figure 3 This is a schematic diagram of the overall layout of this utility model;
[0015] Figure 4 This is a partial structural schematic diagram of the present invention.
[0016] In the diagram: 1-Valve body, 2-Valve plate, 3-Valve stem, 4-Valve stem nut, 5-Gasket, 6-Nut, 7-Bolt, 8-Valve cover, 9-Flexible graphite gasket, 10-Nut, 11-Bolt, 12-Packaging, 13-Packaging box, 14-Packaging gland, 15-Bolt, 16-Nut, 17-Handwheel, 18-Washer, 19-Nut, 20-Welded sealing surface, 21-Extended valve stem, 22-Bolt, 23-Portable counter, 24-Opening and closing platform. Detailed Implementation
[0017] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.
[0018] Example 1: As Figures 1 to 4 As shown, a submersible, concealed stem opening and closing device includes a valve body (1), a valve plate (2), a valve stem (3), a valve cover (8), a stuffing box (13), a stuffing gland (14), a handwheel (17), and a portable counter (23). The valve body (1) has a valve cover (8) on its upper part, a stuffing box (13) on its upper part, a stuffing gland (14) on its upper part, an extended valve stem (21) at the top of the valve stem (3), a handwheel (17) at the top of the extended valve stem (21), and a portable counter (23) outside the handwheel (17). During the process of the valve plate (2) rising and falling to the valve cover (8), the valve plate and the concealed stem opening and closing device change from internal pressure to external pressure, with the external pressure providing better sealing than the internal pressure.
[0019] like Figures 1 to 4 As shown, the valve body (1), valve cover (8), stuffing box (13), and stuffing gland (14) are made of QT400 ductile iron, and the valve plate (2) is made of 304 stainless steel, which is corrosion resistant and has good sealing and friction properties. The valve stem (3) and extended valve stem (21) are made of 2Cr13 stainless steel, which is oxidation resistant and has high strength to meet torque transmission requirements. The sealing surface is made of tin bronze weld overlay and then machined, so the sealing surface is not easy to rust.
[0020] like Figures 1 to 4 As shown, the valve stem nut (4) is made of ZHMn58-2 brass, the nuts (6), (10), (16), and (19) are made of 304 stainless steel, the bolts (7), (11), (15), and (22) are made of 304 stainless steel, the handwheel (17) is made of HT200 tinplate, the gaskets (5) and (18) are made of 304 stainless steel, and the weld overlay sealing surface (20) is made of tin bronze. The valve cover (8) and the stuffing box (13) are sealed with flexible graphite gaskets, and the components below and above the middle section of the valve cover (8) are sealed with flexible graphite gaskets.
[0021] like Figures 1 to 4 As shown, the components below the middle section of the valve body (1) and valve cover (8) are integrally cast and annealed, the components above the middle section of the valve cover (8) are integrally cast and annealed, the weld overlay sealing surface (20) is welded and then processed using tin bronze, and the valve plate (2), valve stem (3), and extended valve stem (21) are integrally processed using plasma cutting and integral processing of a single piece of material.
[0022] like Figures 1 to 4As shown, during installation, the valve stem (3) and the extended valve stem (21) are fixedly connected by bolts (22). When the operator turns the handwheel (17), the valve stem (3) and the extended valve stem (21) rotate coaxially to drive the valve up and down. At the same time, the diameter of the extended valve stem (21) is larger than that of the valve stem (3). The extended valve stem (21) and the valve stem (3) are connected by a four-sided sleeve. After the extended valve stem (21) and the valve stem (3) are sleeved, they are fixed by four bolts (22) to ensure coaxiality, saving time and effort.
[0023] like Figures 1 to 4 As shown, this utility model adopts the valve stem structure and movement mode of a non-circular stem gate valve. The transmission internal thread of the non-circular stem is set inside the housing. During the opening and closing of the valve, the valve stem (3) and (21) only rotate, while the valve plate (2) and the valve stem nut (4) fixedly connected to it move up and down inside the housing.
[0024] like Figure 2 As shown, the opening and closing platform (24) is constructed of steel or mud-brick, which facilitates the opening and closing operations of staff.
[0025] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A submerged concealed rod opening and closing device, characterized in that: The system includes one or more graded water intake units, each of which includes a valve body (1), a valve plate (2), a valve stem (3), a valve stem nut (4), a gasket (5), a first nut (6), a first bolt (7), a valve cover (8), a second nut (10), a second bolt (11), a packing box (13), a packing gland (14), a third bolt (15), a third nut (16), a handwheel (17), a washer (18), a fourth nut (19), a weld overlay sealing surface (20), a fourth bolt (22), a portable counter (23), and an opening and closing platform (24); the upper part of the valve body (1) is provided with a valve cover (8). A stuffing box (13) is provided on the upper part of the valve cover (8), and a stuffing gland (14) is provided on the upper part of the stuffing box (13). An extended valve stem (21) is provided at the top of the valve stem (3), and a handwheel (17) is installed at the top of the extended valve stem (21). A portable counter (23) is provided on the outside of the handwheel (17). The extended valve stem (21) extends upward through the opening and closing platform (24), and the handwheel (17) is located above the opening and closing platform (24). Multiple graded water intake units are arranged vertically along the reservoir water level, and the opening and closing platform of each graded water intake unit is set at a height corresponding to the water intake water level of that unit.
2. The submerged concealed rod opening and closing device according to claim 1, characterized in that: The valve body (1), valve cover (8), stuffing box (13), and stuffing gland (14) are made of QT400 ductile iron, the valve plate (2) is made of 304 stainless steel, and the valve stem (3) and extended valve stem (21) are made of 2Cr13 stainless steel.
3. The submerged concealed rod opening and closing device according to claim 1, characterized in that: The valve stem nut (4) is made of ZHMn58-2 brass, the gasket (5) and washer (18) are made of 304 stainless steel, the weld overlay sealing surface (20) is made of tin bronze; the first nut (6), the second nut (10), the third nut (16), and the fourth nut (19) are made of 304 stainless steel; the first bolt (7), the second bolt (11), the third bolt (15), and the fourth bolt (22) are made of 304 stainless steel; the handwheel (17) is made of HT200 tinplate.
4. The submerged concealed rod opening and closing device according to claim 1, characterized in that: The valve cover (8) and the stuffing box (13) are sealed with flexible graphite gaskets. The components below the middle section and above the middle section of the valve cover (8) are sealed with flexible graphite gaskets.