Spiral water splashing prevention type exhaust valve

Abstract

The utility model discloses a spiral type water-splashing-preventing exhaust valve which aims at solving the problems that after an exhaust valve exhausts air, liquid is prone to rising or splashing in a small range under the action of pressure, and in some special application scenes, splashed liquid may bring serious consequences. The device comprises an outer shell and a spiral pipeline, the outer shell is of a big-end-up two-section type hollow columnar structure, the upper end of the outer shell is an outer shell cavity, and the lower section of the outer shell is an exhaust inlet. And the spiral pipeline is arranged in the cavity of the outer shell. Liquid is dredged through the spiral pipeline, a liquid moving space is provided, the water hammer effect is reduced, the liquid splashing risk is effectively reduced, and personal safety is protected.

Description

Technical Field

[0001] The utility model relates to the field of exhaust valves in heating systems and water supply pipes, and particularly relates to a spiral waterproof splash-proof exhaust valve. Background Art

[0002] An exhaust valve is a valve installed at the highest point of a system to release gases generated in a heating system and a water supply pipe. During the operation of a heating system, various adverse effects brought by gases such as hydrogen and oxygen released when water is heated will damage the system and reduce the thermal effect. If these gases cannot be discharged in time, many adverse consequences will occur. When there is air in a water supply system, it is easy to form gas accumulation, resulting in reduced water supply efficiency. The exhaust valve plays the role of discharging gases and dredging pressure gases.

[0003] Currently, in most exhaust valves, after discharging air, the liquid is likely to rise or splash slightly under the action of pressure, and the splashed liquid may bring serious consequences in some special application scenarios.

[0004] In view of this, it is necessary to improve the existing exhaust valve to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a spiral waterproof splash-proof exhaust valve to solve the problem that after the exhaust valve discharges air, the liquid is likely to rise or splash slightly under the action of pressure, and the splashed liquid may bring serious consequences in some special application scenarios.

[0006] To achieve the above purpose, the utility model provides a spiral waterproof splash-proof exhaust valve, which includes an outer shell and a spiral pipe; the outer shell is a two-stage hollow columnar structure with a larger upper part and a smaller lower part, the upper part is the outer shell chamber, and the lower part is the exhaust inlet; the spiral pipe is arranged in the outer shell chamber.

[0007] Preferably, the spiral pipe is a spiral pipe structure with a closed upper end and an open lower end, and a part of the upper end extends vertically outside the outer shell.

[0008] Preferably, a uniformly distributed ventilation port is provided in a circle at the top of the part where the upper end of the spiral pipe extends vertically outside the outer shell.

[0009] Preferably, the pipe part of the spiral pipe located in the outer shell chamber is provided with uniformly distributed exhaust holes, and the exhaust holes communicate with other cavity parts in the outer shell chamber except the spiral pipe.

[0010] Preferably, the opening at the lower end of the spiral pipe is located at the center of the lower end of the outer shell chamber and is connected to the exhaust inlet.

[0011] Preferably, fixing plates are provided on both sides of the inner wall of the outer housing cavity to clamp and fix the threaded pipe.

[0012] Preferably, a threaded fixing structure is provided on the outer wall of the exhaust inlet.

[0013] Preferably, the upper end of the threaded fixing structure is a bolt hexagon head, and the lower end is a threaded structure.

[0014] The beneficial effects of the present utility model are as follows: the spiral pipe is used to guide the liquid, providing a space for the liquid to move, reducing the water hammer effect, effectively reducing the risk of liquid splashing, and protecting personal safety; the threaded fixing structure is used for installation, making the construction convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the main structural view of the present utility model.

[0016] Figure 2 is the overall appearance view of the present utility model.

[0017] Figure 3 is the top structural view of the present utility model.

[0018] In the figure: 1 - outer housing cavity, 2 - exhaust inlet, 3 - spiral pipe, 4 - vent, 5 - exhaust hole, 6 - fixing plate, 7 - bolt hexagon head, 8 - threaded structure, 9 - outer housing. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] In order to make the objectives, technical solutions, and advantages of the present utility model clearer, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] As Figures 1 to 3 shown, the spiral waterproof and splash-proof exhaust valve provided by the present utility model includes an outer housing 9 and a spiral pipe 3; the outer housing 9 is a two-stage hollow columnar structure with a larger upper part and a smaller lower part, the upper end is the outer housing cavity 1, and the lower part is the exhaust inlet 2; the spiral pipe 3 is arranged in the outer housing cavity 1.

[0021] As a further improvement of the present utility model, the spiral waterproof and splash-proof exhaust valve is integrally made of HDPE material. Considering the difficulty of integral molding of this product, this product can be divided into two parts, namely the outer housing cavity 1 and the exhaust inlet 2, and welded together. In this way, the production method is more convenient, and at the same time, compared with metal drain valves, the cost is low; compared with plastic exhaust valves, it can be used without installing a pipe cap.

[0022] As a further improvement of the present utility model, the spiral pipe 3 is a spiral pipe structure with a closed upper end and an open lower end, and a part of the upper end vertically extends outside the outer shell 9; the spiral pipe structure can guide the flow of liquid, leaving enough space for liquid flow, effectively reducing the water hammer effect of large pressure fluctuations and vibrations caused by sharp changes in fluid flow rate, and can effectively prevent liquid splashing.

[0023] As a further improvement of the present utility model, at the part where the upper end of the spiral pipe 3 vertically extends outside the outer shell 9, a uniformly distributed ventilation port 4 is provided in a circle at the top; exhausting gas through the ventilation port 4 instead of directly through the pipe can effectively prevent liquid splashing.

[0024] As a further improvement of the present utility model, in the pipe part of the spiral pipe 3 located in the cavity 1 of the outer shell, uniformly distributed exhaust holes 5 are provided, and the exhaust holes 5 communicate with other cavity parts in the cavity 1 of the outer shell except the spiral pipe 3. The space between the outer shell 9 and the outside of the spiral pipe 3 can still store liquid and air, and gas and liquid can freely enter and exit through the exhaust holes; as the liquid rises, the air in this part can also be completely exhausted. This space provides a sufficiently large buffer space for the fluid. While guiding the fluid with the spiral pipe structure, it buffers the movement of the fluid, effectively reducing the water hammer effect of large pressure fluctuations and vibrations caused by sharp changes in fluid flow rate, and can effectively prevent liquid splashing.

[0025] As a further improvement of the present utility model, the opening at the lower end of the spiral pipe 3 is located at the center of the lower end of the cavity 1 of the outer shell and is connected to the exhaust inlet 2, and gas and liquid can enter the spiral pipe 3 through the exhaust inlet 2.

[0026] As a further improvement of the present utility model, fixing plates 6 are provided on both sides of the inner wall of the cavity 1 of the outer shell to clamp and fix the threaded pipe 3, so that the threaded pipe 3 has sufficient support and is more stable; at the same time, the fixing plates 6 act as buffer devices to reduce the vibration brought by fluid movement and the water hammer effect, and at the same time ensure that the fluid movement is smoother, prevent the liquid flow rate from being too fast, and reduce the water hammer effect.

[0027] As a further improvement of the present utility model, a threaded fixing structure is provided on the outer wall of the exhaust inlet 2.

[0028] As a further improvement of the present utility model, the upper end of the threaded fixing structure is a bolt hexagon head 7, and the lower end is a threaded structure 8. When installing the spiral waterproof splash - type exhaust valve provided by the present utility model, it can be tightened on the valve of the required exhaust system by using the threaded structure 8. The setting of the bolt hexagon head 7 can facilitate the construction operation of this product with tools such as wrenches, making the installation more convenient.

[0029] The following will illustrate the practical application solutions that can be adopted for the kneading machine cylinder body with composite heating through two types of embodiments.

[0030] In Embodiment 1 of the present utility model, the spiral waterproof splash-type exhaust valve is entirely made of stainless steel. Stainless steel has excellent corrosion resistance, which is mainly due to the content of chromium in its alloy. When the chromium content reaches a certain proportion, a dense oxide film (passivation film) will form on the surface of the stainless steel, effectively preventing further erosion by oxygen, water, and other corrosive media, thereby greatly extending the service life of this product. At the same time, stainless steel has high strength and hardness, can withstand large pressures and impacts, is not easily deformed or damaged, and can withstand large liquid pressures in the application scenario of this product, reducing the damage caused by water hammer effects. At the same time, stainless steel has good processing performance and can be processed and formed through various processes such as casting, forging, welding, cutting, and stamping. This provides convenience for the diversified and mass production of this product. Considering the difficulty of one-piece molding of this product, this product can be welded into two parts: the outer shell chamber 1 and the exhaust inlet 2.

[0031] The specific usage process of the first embodiment is as follows: Install the spiral waterproof and splash-proof exhaust valve provided by the present utility model on the top exhaust valve of the fluid pipeline part of the required exhaust system, such as the heating system and the water supply pipeline system. During the operation of the heating system, various adverse effects brought by gases such as hydrogen and oxygen released when water is heated will damage the system and reduce the thermal efficiency. If these gases cannot be discharged in time, many adverse consequences will occur. When there is air in the water supply system, it is easy to form gas accumulation, resulting in reduced water supply efficiency. The exhaust valve plays the role of discharging gas and dredging pressure gas. After the traditional air valve discharges air, the liquid rises or splashes slightly under the action of pressure. By using the spiral air valve, the liquid splash can be effectively prevented and the liquid flow rate can be slowed down. The outer wall of the exhaust inlet 2 at the lower end of the spiral waterproof and splash-proof exhaust valve provided by the present utility model is provided with a bolt hexagon head 7 and a thread structure 8, and tools such as a wrench can be used to install this product, and the thread structure 8 can be very conveniently tightened on the valve to be installed. After installation, during normal operation, the fluid enters the outer shell cavity 1 at the upper end of the spiral waterproof and splash-proof exhaust valve from the exhaust inlet 2 at the lower end of the spiral waterproof and splash-proof exhaust valve, and the fluid gradually moves upward through the spiral pipeline 3 in the outer shell cavity 1. The spiral pipeline 3 has less damping compared with the spiral loop structure used in common exhaust valves, and the liquid flow is more stable. At the same time, an extra cavity structure can be left in the outer shell cavity 1. Part of the fluid enters the other cavity parts in the outer shell cavity 1 except the spiral pipeline 3 through the uniformly distributed exhaust holes 5 provided on the pipeline part of the spiral pipeline 3 located in the outer shell cavity 1. The space between the outer shell 9 and the outside of the spiral pipeline 3 can still store liquid and air, and the gas and liquid can freely enter and exit through the exhaust holes 5; as the liquid rises, the air located in this part can also be completely discharged. This space provides a sufficiently large buffer space for the fluid. While guiding the fluid with the spiral pipeline structure, it buffers the movement of the fluid, effectively reducing the large pressure fluctuation and the resulting vibration water hammer effect caused by the sudden change in fluid flow rate, and can effectively prevent liquid splash; the water hammer effect, also known as water hammer, refers to the fact that inside the water pipe, when the valve is suddenly closed or opened, or the water pump suddenly stops, due to the inertia of the water flow, a pressure wave will be generated, and this pressure wave rapidly propagates in the pipeline, causing a huge impact on equipment such as pipelines, valves, and water pumps, just like being hammered. Finally, the gas is discharged through the uniformly distributed vent holes 4 provided in a circle at the top of the part extending vertically outside the outer shell 9 at the upper end of the spiral pipeline 3; exhausting through the vent holes 4 instead of directly through the pipeline can effectively prevent liquid splash. During the whole process, fixed plates 6 are provided on both sides of the inner wall of the outer shell cavity 1 to clamp and fix the threaded pipeline 3, so that the threaded pipeline 3 has sufficient support and is more stable; at the same time, the fixed plate 6 serves as a buffer device to reduce the vibration brought by fluid movement and the water hammer effect, and at the same time ensures that the fluid movement is more stable, prevents the liquid flow rate from being too fast, and reduces the water hammer effect.

[0032] In the second embodiment of the present utility model, in order to make the technical solution provided by the present utility model more convenient to produce and lower in cost, the spiral waterproof splash type exhaust valve is integrally made of HDPE material. HDPE is a thermoplastic resin with high crystallinity and non-polarity. HDPE has good heat resistance and cold resistance, good chemical stability, and also has relatively high rigidity and toughness, and good mechanical strength, ensuring the structural strength and stability of the overall exhaust valve; at the same time, HDPE has good molding processability and can be formed by injection molding, blow molding, extrusion, rotational molding and other molding methods, facilitating the production and processing of this product; considering the difficulty of integral molding of this product, this product can be divided into two parts, namely an outer shell cavity 1 and an exhaust inlet 2, which are welded together. In this way, the production method is more convenient, and at the same time, compared with a metal drain valve, the cost is low; compared with a plastic exhaust valve, it can be used without installing a pipe cap; the design of the threaded fixing structure also makes the installation of this product more convenient.

[0033] The specific usage process of the second embodiment is as follows: Install the spiral waterproof and splash-proof exhaust valve provided by the present utility model on the top exhaust valve of the fluid pipeline part of the required exhaust system, such as the heating system and the water supply pipeline system. During the operation of the heating system, various adverse effects caused by gases such as hydrogen and oxygen released when water is heated will damage the system and reduce the thermal effect. If these gases cannot be discharged in time, many adverse consequences will occur. When there is air in the water supply system, gas accumulation is likely to form, resulting in a decrease in water supply efficiency. The exhaust valve plays the role of discharging gas and dredging the pressure gas. After the traditional air valve discharges the air, the liquid rises or splashes slightly under the action of pressure. By using the spiral air valve, the liquid splash can be effectively prevented and the liquid flow rate can be slowed down. The outer wall of the exhaust inlet 2 at the lower end of the spiral waterproof and splash-proof exhaust valve provided by the present utility model is provided with a bolt hexagon head 7 and a thread structure 8. Tools such as a wrench can be used to install this product, and the thread structure 8 can be very conveniently tightened on the valve to be installed. After installation, during normal operation, the fluid enters the outer shell cavity 1 at the upper end of the spiral waterproof and splash-proof exhaust valve from the exhaust inlet 2 at the lower end of the spiral waterproof and splash-proof exhaust valve, and the fluid gradually moves upward through the spiral pipeline 3 in the outer shell cavity 1. The spiral pipeline 3 has less damping compared with the spiral ring structure used in common exhaust valves, and the liquid flow is more stable. At the same time, an extra cavity structure can be left in the outer shell cavity 1. Part of the fluid enters the other cavity parts in the outer shell cavity 1 except the spiral pipeline 3 through the uniformly distributed exhaust holes 5 provided on the pipeline part of the spiral pipeline 3 located in the outer shell cavity 1. The space between the outer shell 9 and the outside of the spiral pipeline 3 can still store liquid and air, and the gas and liquid can freely enter and exit through the exhaust holes 5; as the liquid rises, the air located in this part can also be completely discharged. This space provides a sufficiently large buffer space for the fluid. While guiding the fluid with the spiral pipeline structure, it buffers the movement of the fluid, effectively reducing the large pressure fluctuation and the resulting vibration water hammer effect caused by the sudden change in fluid flow rate, and can effectively prevent the liquid from splashing; the water hammer effect, also known as water hammer, refers to inside the water pipe, when the valve is suddenly closed or opened, or the water pump suddenly stops, due to the inertia of the water flow, a pressure wave will be generated, and this pressure wave quickly propagates in the pipeline, generating a huge impact on equipment such as pipelines, valves, and water pumps, just like being hammered. Finally, the gas is discharged through the uniformly distributed vent holes 4 provided in a circle at the top of the part that extends vertically outside the outer shell 9 at the upper end of the spiral pipeline 3; discharging the gas through the vent holes 4 instead of directly through the pipeline can effectively prevent the liquid from splashing. During the whole process, fixing plates 6 are provided on both sides of the inner wall of the outer shell cavity 1 to clamp and fix the threaded pipeline 3, so that the threaded pipeline 3 has sufficient support and is more stable; at the same time, the fixing plate 6 serves as a buffer device to reduce the vibration brought by the fluid movement and the water hammer effect, and at the same time ensures that the fluid movement is more stable, prevents the liquid flow rate from being too fast, and reduces the water hammer effect.

[0034] The above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A spiral waterproof splash exhaust valve, characterized in that: The spiral waterproof splash exhaust valve comprises an outer shell and a spiral pipe; the outer shell is a two-section hollow columnar structure with a larger upper portion and a smaller lower portion, the upper end of which is the outer shell chamber and the lower section is the exhaust inlet; the spiral pipe is arranged in the outer shell chamber.

2. A spiral waterproof splash exhaust valve according to claim 1, characterized in that: The spiral pipe is a spiral pipe structure with a closed upper end and an open lower end, and a portion of the upper end vertically extends out of the outer shell.

3. A spiral waterproof splash exhaust valve according to claim 1 or 2, characterized in that: The upper end of the spiral pipe vertically extends out of the outer shell, and a circle of evenly distributed vents are arranged on the top.

4. A spiral waterproof splash exhaust valve according to claim 1 or 2, characterized in that: The spiral pipe is located in the pipe part of the outer shell cavity, and is provided with evenly distributed exhaust holes, and the exhaust holes are connected with other cavity parts in the outer shell cavity except the spiral pipe.

5. A spiral waterproof splash exhaust valve according to claim 1 or 2, characterized in that: The pipe opening at the lower end of the spiral pipe is located at the center of the lower end of the outer shell chamber and is connected to the exhaust inlet.

6. A spiral waterproof splash exhaust valve according to claim 1, characterized in that: Fixed plates are arranged on both sides of the inner wall of the cavity of the outer shell body to clamp and fix the threaded pipe.

7. A spiral waterproof splash exhaust valve according to claim 1, characterized in that: The outer wall of the exhaust inlet is provided with a threaded fixing structure.

8. A spiral waterproof splash exhaust valve according to claim 7, characterized in that: The upper end of the threaded fixing structure is a hexagonal head of a bolt, and the lower end is a threaded structure.

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