Sapphire sealing one-way valve

Abstract

The sapphire sealing one-way valve comprises a valve body, a sealing assembly is installed in the valve body, and the sealing assembly comprises a flow guide seat, a flow guide hole, a sealing sleeve, a first sealing groove, a spring, a second sealing groove, a connecting rod, a sealing plate, a valve element, a valve seat and a second sealing ring. The valve element is pushed through fluid, the spring is stressed and compressed, at the moment, a fluid conveying pipeline is a passage, when the fluid flows into the valve body from the upper connecting base, the fluid cannot flow out, and one-way circulation is achieved; the second sealing ring is mounted on the sealing plate, and the first sealing ring is mounted in the sealing sleeve, so that fluid can be prevented from being in direct contact with the spring, the spring cannot be corroded, the strength and the elasticity of the spring are guaranteed, and the service life of the one-way valve is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a check valve, concretely sapphire seal check valve belongs to check valve technical field. BACKGROUND

[0002] The check valve is the fluid only along the water inlet, and the water outlet medium cannot backflow, and the check valve with good corrosion resistance is usually made of materials with excellent corrosion resistance, such as stainless steel, plastic and the like, the stainless steel has strong corrosion resistance and high temperature resistance, and the valve body can also be made of stainless steel or other corrosion-resistant materials to adapt to various corrosive media.

[0003] It is known that the Chinese authorized utility model (announcement number: CN222479543U) discloses a check valve with good corrosion resistance, when using, fluid is introduced along the one end of the valve body close to the first limiting plate, will impact the ball, drive the elastic piece compression, make the ball remove the sealing of the first sealing ring through hole, namely can make fluid flow out from the other end of the valve body, conversely, the ball not impacted is pushed by the elastic piece, and the through hole of the first sealing ring is closed, so that the fluid cannot flow out, realizing one-way flow;

[0004] It realizes the one-way control function of fluid, ensures the smooth flow of fluid in the predetermined direction, and effectively prevents the backflow of fluid when reversing, but the check valve has a significant defect when dealing with fluid with strong corrosion:

[0005] The spring in it directly contacts with fluid: since the spring is usually made of metal, although it has certain corrosion resistance, but under the condition of long-time direct contact with strong corrosive fluid, it still faces serious corrosion problem, the corrosion not only weakens the strength and elasticity of the spring, but also leads to the fracture or failure of the spring, thereby seriously affecting the working performance and reliability of the check valve, and shortening its service life, therefore, a sapphire seal check valve is proposed. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a sapphire seal check valve to solve one of the problems in the above background technology.

[0007] The utility model discloses a sapphire seal check valve, including the valve body, the inside installation of the valve body has the sealing assembly, the sealing assembly includes the flow guide seat, the flow guide hole, the sealing sleeve, the first sealing groove, the spring, the second sealing groove, the connecting rod, the sealing plate, the valve core, the valve seat and the second sealing ring;

[0008] One end of the sealing sleeve is threadedly connected to the inside of the flow guide base, the flow guide hole is arranged in the inside of the flow guide base, the first sealing groove is arranged on one side of the inner wall of the sealing sleeve, the first sealing ring is embedded in the inside of the first sealing groove, one end of the connecting rod is fixedly connected to one side of the sealing plate, the other end of the connecting rod is threadedly connected with the valve core, the second sealing groove is arranged on the outer side wall of the sealing plate, the second sealing ring is embedded in the inner side wall of the second sealing groove, the outer side wall of the valve core is attached to the inner side wall of the valve seat, and the spring is located in the inside of the sealing sleeve.

[0009] As a further preferred aspect of the present technical solution: the outer side wall of the sealing plate is attached to the inner side wall of the sealing sleeve, and the second sealing ring is attached to the inner side wall of the sealing sleeve.

[0010] As a further preferred aspect of the present technical solution: the connecting rod is slidingly connected to the inner side wall of the sealing sleeve, and the first sealing ring is attached to the outer side wall of the connecting rod.

[0011] As a further preferred aspect of the present technical solution: one end of the spring abuts against the sealing plate, and the other end of the spring abuts against the sealing sleeve.

[0012] As a further preferred aspect of the present technical solution: the inner side wall of the valve body is fixedly connected with the mounting seat, the screw is mounted in the inside of the mounting seat, and the valve seat is fixedly connected with the mounting seat through the screw.

[0013] As a further preferred aspect of the present technical solution: the valve core and the valve seat are both made of sapphire material.

[0014] As a further preferred aspect of the present technical solution: one end of the valve body is threadedly connected with the upper connecting seat, and the side, away from the sealing sleeve, of the flow guide base is attached to the upper connecting seat.

[0015] As a further preferred aspect of the present technical solution: the other end of the valve body is threadedly connected with the lower connecting seat.

[0016] The present application has the following advantages:

[0017] 1. The fluid pushes the valve core, the valve core drives the sealing plate to slide in the sealing sleeve through the connecting rod, the spring is compressed under stress, the fluid enters the valve body and is discharged from the flow guide hole, at this time, the fluid conveying pipeline is a passage, when the fluid flows into the valve body from the upper connecting seat, the valve core is tightly attached to the valve seat under the action of the spring, so that the fluid cannot flow out, thereby realizing one-way flow;

[0018] 2. The second sealing ring is mounted on the sealing plate, and the first sealing ring is mounted in the sealing sleeve, thereby avoiding direct contact of the fluid with the spring, so that the spring will not be corroded, the strength and elasticity of the spring are ensured, and the service life of the one-way valve is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0020] Figure 1 It is a structural schematic view of the present application;

[0021] Figure 2 It is a sectional view of the present application;

[0022] Figure 3 It is a structural exploded view of the present application;

[0023] Figure 4 It is a structural exploded view of the sealing assembly of the present application;

[0024] Figure 5 It is a valve seat structure schematic view of the present application.

[0025] In the figure: 101, sealing assembly; 11, flow guide seat; 12, flow guide hole; 13, sealing sleeve; 14, first sealing groove; 15, first sealing ring; 16, spring; 17, second sealing groove; 18, connecting rod; 19, sealing plate; 20, valve core; 21, valve seat; 22, second sealing ring; 23, mounting seat; 24, screw; 31, valve body; 32, upper connecting seat; 33, lower connecting seat. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0027] EMBODIMENT

[0028] Please refer to Figures 1-5 The present application provides a technical solution: a sapphire sealed one-way valve, comprising a valve body 31, a sealing assembly 101 is installed inside the valve body 31, and the sealing assembly 101 is used to realize the opening and closing of the one-way valve.

[0029] The sealing assembly 101 comprises a flow guide base 11, a flow guide hole 12, a sealing sleeve 13, a first sealing groove 14, a spring 16, a second sealing groove 17, a connecting rod 18, a sealing plate 19, a valve core 20, a valve seat 21 and a second sealing ring 22.

[0030] One end of the sealing sleeve 13 is threadedly connected to the inside of the flow guide base 11, and the flow guide hole 12 is formed in the inside of the flow guide base 11. When the check valve is opened, fluid can flow out of the flow guide hole 12.

[0031] The first sealing groove 14 is formed on one side of the inner wall of the sealing sleeve 13, and the first sealing ring 15 is embedded in the inside of the first sealing groove 14. The connecting rod 18 is slidingly connected to the inner side wall of the sealing sleeve 13, and the first sealing ring 15 is attached to the outer side wall of the connecting rod 18. The first sealing ring 15 is located at the end of the sealing sleeve 13. Since the first sealing ring 15 is attached to the connecting rod 18, fluid can be prevented from entering the inside of the sealing sleeve 13.

[0032] The second sealing groove 17 is formed on the outer side wall of the sealing plate 19, and the second sealing ring 22 is embedded in the inner side wall of the second sealing groove 17. The outer side wall of the sealing plate 19 is attached to the inner side wall of the sealing sleeve 13, and the second sealing ring 22 is attached to the inner side wall of the sealing sleeve 13. A sealed chamber is formed between the sealing plate 19 and the sealing sleeve 13, and the spring 16 is located in the chamber. The sealing plate 19 and the second sealing ring 22 can provide a secondary sealing function to prevent fluid from entering the chamber, so that the spring 16 is not directly in contact with the fluid, preventing corrosion of the spring 16, ensuring the strength of the spring 16 and prolonging the service life of the spring 16.

[0033] One end of the connecting rod 18 is fixedly connected to one side of the sealing plate 19, and the other end of the connecting rod 18 is threadedly connected to the valve core 20. The outer side wall of the valve core 20 is attached to the inner side wall of the valve seat 21, and the spring 16 is located in the inside of the sealing sleeve 13. The cooperation of the valve core 20 and the valve seat 21 can achieve the closing of the check valve.

[0034] In this embodiment, specifically: the valve core 20 and the valve seat 21 are both made of sapphire material. Sapphire material has extremely high hardness and excellent corrosion resistance, with a Mohs hardness of 9, second only to diamond. It can maintain stable sealing performance in harsh environments. By using sapphire material to make the valve core 20 and the valve seat 21, the erosion and wear caused by particulate impurities in the fluid can be effectively resisted, the shape of the sealing surface can be maintained, and the stability of the sealing performance can be ensured. At the same time, its excellent corrosion resistance is derived from the chemical stability of sapphire, which can withstand the corrosion of various strong corrosive chemical media. Compared with traditional metal valve cores and valve seats, the service life of sapphire material is longer in the same corrosive environment, greatly improving the reliability and durability of the check valve.

[0035] In this embodiment, specifically: one end of the spring 16 against the sealing plate 19, the other end of the spring 16 against the sealing sleeve 13, by the spring 16 push sealing plate 19, sealing plate 19 with connecting rod 18, connecting rod 18 with the valve core 20 and valve seat 21 close fit, and then can realize the closing of the check valve.

[0036] In this embodiment, specifically: the inner side wall of the valve body 31 is fixedly connected with the mounting seat 23, the screw 24 is installed in the mounting seat 23, and the valve seat 21 is fixedly connected with the mounting seat 23 through the screw 24. The valve seat 21 is fixedly connected with the mounting seat 23 through the screw 24, which facilitates disassembly and maintenance.

[0037] In this embodiment, specifically: one end of the valve body 31 is threadedly connected with the upper connecting seat 32, the flow guide seat 11 is attached to the upper connecting seat 32 away from the sealing sleeve 13, and the other end of the valve body 31 is threadedly connected with the lower connecting seat 33. The upper connecting seat 32 and the lower connecting seat 33 can be used to connect the external fluid pipeline. When the upper connecting seat 32 is disassembled, the sealing assembly 101 inside the valve body 31 can be disassembled.

[0038] Working principle or structural principle, when using, through the upper connecting seat 32 and the lower connecting seat 33, the valve body 31 is installed in the fluid conveying pipeline, the fluid flows into the valve body 31 from the lower connecting seat 33, at this time the fluid pushes the valve core 20, the valve core 20 drives the sealing plate 19 to slide in the sealing sleeve 13 through the connecting rod 18, the spring 16 is compressed under stress, and the fluid enters the valve body 31 and is discharged from the flow guide hole 12. At this time, the fluid conveying pipeline is in a pass-through state.

[0039] When the fluid flows into the valve body 31 from the lower connecting seat 33 at a certain pressure and flow rate, if the fluid pressure exceeds the initial pre-tightening force of the spring 16, the fluid will push the valve core 20 to overcome the resistance of the spring 16, and the valve core 20 drives the sealing plate 19 to slide in the sealing sleeve 13 through the connecting rod 18, and the spring 16 is compressed. The compression degree of the spring 16 is related to the pressure and flow rate of the fluid. Within a certain range, the greater the fluid pressure and the higher the flow rate, the greater the compression of the spring 16. With the compression of the spring 16, the valve core 20 is gradually opened, the fluid can enter the valve body 31 and be discharged from the flow guide hole 12, so that the fluid conveying pipeline is in a pass-through state.

[0040] Compared with the prior art, the utility model discloses a second sealing ring 22 is installed on the sealing plate 19, and a first sealing ring 15 is installed in the sealing sleeve 13, so that the fluid can not directly contact the spring 16, and therefore the spring 16 will not be corroded, the strength and elasticity of the spring 16 are guaranteed, and the service life of the check valve is prolonged.

[0041] The first sealing ring 15 and the second sealing ring 22 are both made of high-performance sealing materials and have good sealing performance. The first sealing ring 15 can maintain a sealed state under a pressure of 10 MPa, with a leakage rate of less than 0.01 mL / min, effectively preventing fluid from entering the sealed chamber through the gap between the sealing sleeve 13 and the connecting rod 18. The second sealing ring 22 also has excellent sealing ability, with a leakage rate of not more than 0.01 mL / min under a pressure of 10 MPa, ensuring the sealing effect between the sealing plate 19 and the sealing sleeve 13, thereby reliably preventing fluid from directly contacting the spring 16 and providing effective protection for the spring 16.

[0042] When installing the sapphire sealed one-way valve, attention should be paid to the connection direction of the upper connecting seat 32 and the lower connecting seat 33 on the valve body to ensure that the fluid flows in the designed one-way direction through the one-way valve, avoiding reverse installation that may cause the one-way valve to fail. The working temperature range of the one-way valve is -20℃ to 150℃, and exceeding this range may affect the sealing performance and the elasticity of the spring. During use, it is recommended to regularly check whether the connections of the upper connecting seat 32 and the lower connecting seat 33 with the external pipeline are firm, and whether there are signs of damage or leakage of the valve body 31, the sealing assembly 101, etc. The one-way valve should be maintained comprehensively every 3 months, including checking the wear of the first sealing ring 15 and the second sealing ring 22, replacing them in time if worn out; checking the elasticity of the spring 16, and replacing it if found to be weakened or deformed, to ensure the normal operation and sealing performance of the one-way valve.

[0043] The sapphire sealed one-way valve is suitable for various corrosive fluids, such as strong acids (e.g. sulfuric acid, hydrochloric acid, etc.), strong bases (e.g. sodium hydroxide, potassium hydroxide, etc.), and some organic solvents, etc. However, for some fluids with special chemical properties, such as fluids with strong oxidizing properties and high temperatures, compatibility tests should be conducted before use to ensure that the sealing performance of the one-way valve and the chemical stability of the components are not affected. At the same time, for fluids containing a large amount of particulate impurities, it is recommended to install a suitable filtering device at the front end of the one-way valve to reduce the wear of the valve core 20, the valve seat 21, and the sealing assembly caused by particulate impurities, thereby prolonging the service life of the one-way valve.

[0044] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A sapphire-sealed one-way valve, characterized in that, The valve includes a valve body (31), and a sealing assembly (101) is installed inside the valve body (31). The sealing assembly (101) includes a flow guide seat (11), a flow guide hole (12), a sealing sleeve (13), a first sealing groove (14), a spring (16), a second sealing groove (17), a connecting rod (18), a sealing plate (19), a valve core (20), a valve seat (21), and a second sealing ring (22). One end of the sealing sleeve (13) is threaded to the inside of the flow guide seat (11), the flow guide hole (12) is opened inside the flow guide seat (11), the first sealing groove (14) is opened on one side of the inner wall of the sealing sleeve (13), the first sealing ring (15) is embedded in the inside of the first sealing groove (14), one end of the connecting rod (18) is fixedly connected to one side of the sealing plate (19), the other end of the connecting rod (18) is threaded to the valve core (20), the second sealing groove (17) is opened on the outer wall of the sealing plate (19), the second sealing ring (22) is embedded in the inner wall of the second sealing groove (17), the outer wall of the valve core (20) is attached to the inner wall of the valve seat (21), and the spring (16) is located inside the sealing sleeve (13).

2. The sapphire-sealed one-way valve according to claim 1, characterized in that, The outer wall of the sealing plate (19) is attached to the inner wall of the sealing sleeve (13), and the second sealing ring (22) is attached to the inner wall of the sealing sleeve (13).

3. A sapphire-sealed one-way valve according to claim 2, characterized in that, The connecting rod (18) is slidably connected to the inner wall of the sealing sleeve (13), and the first sealing ring (15) is attached to the outer wall of the connecting rod (18).

4. A sapphire-sealed one-way valve according to claim 3, characterized in that, One end of the spring (16) presses against the sealing plate (19), and the other end of the spring (16) presses against the sealing sleeve (13).

5. A sapphire-sealed one-way valve according to claim 4, characterized in that, The inner wall of the valve body (31) is fixedly connected to a mounting base (23), and a screw (24) is installed inside the mounting base (23). The valve seat (21) is fixedly connected to the mounting base (23) by the screw (24).

6. A sapphire-sealed one-way valve according to claim 1, characterized in that, Both the valve core (20) and the valve seat (21) are made of sapphire.

7. A sapphire-sealed one-way valve according to claim 1, characterized in that, One end of the valve body (31) is threadedly connected to an upper connecting seat (32), and the side of the flow guide seat (11) away from the sealing sleeve (13) is in contact with the upper connecting seat (32).

8. A sapphire-sealed one-way valve according to claim 1, characterized in that, The other end of the valve body (31) is threadedly connected to a lower connecting seat (33).

Images