Novel one-way valve

Abstract

The utility model relates to a novel one-way valve which comprises a valve body with a hollow channel inside, and a necking part which shrinks towards the center direction is arranged on the valve body; the valve seat is mounted in the valve body, and a valve port is formed in the valve seat; the valve element is of a cup-shaped structure and is movably installed in the hollow channel of the valve body, and one end of the cup bottom of the cup-shaped structure is close to the valve port direction of the valve seat; the one-way valve is simple and reasonable in design structure, the problem of radial shaking in the moving process of the valve element can be solved through sliding fit of the valve element and the valve body, part structures such as a positioning shaft adopted in a traditional one-way valve are omitted, the overall structural design of the one-way valve is simplified, and the one-way valve has the advantages of being easy to assemble and low in cost; in addition, fluid can quickly pass through in the mode that the liquid passing hole is combined with the through groove, the stability of fluid passing is improved, in addition, axial positioning of the valve element can be achieved through the structural design of the necking part at the tail end of the valve body, and the problem that a traditional positioning plate serves as a positioning piece and is impacted and damaged is solved.

Description

Technical Field

[0001] The present application relates to the technical field of one-way valves, and in particular to a novel one-way valve. Background Art

[0002] A one-way valve is a fluid control device that allows fluid to flow in one direction and blocks the flow of fluid in the other direction. This type of valve is commonly used in piping systems to ensure that fluid flows in only one direction to prevent backflow. For example, Chinese utility model patent application number CN202323552574.3 discloses a one-way valve, which includes: a valve seat having a channel running through it and a valve port at one end; a metal valve core fixedly mounted in the channel of the valve seat; the metal valve core is formed into a cup-shaped hollow structure and is configured to be able to move between an open valve position and a closed valve position relative to the valve seat. In the closed valve position, the outer wall of the metal valve core abuts the side wall of the valve port to block the valve port and does not allow the fluid to flow through the one-way valve in a first direction. When the fluid flows in a second direction opposite to the first direction, the fluid pushes the metal valve core to the open valve position, so that the outer wall of the metal valve core does not abut the side wall of the valve port, and the fluid can flow through the metal valve core in the second direction.

[0003] Among them, the above scheme realizes radial positioning of the valve core by setting a positioning plate, a positioning shaft and a positioning sleeve inside the one-way valve, so that the valve core can move along its axial direction. However, there are certain defects in setting the above three components inside the one-way valve. On the one hand, the overall structure is complex, and the three components need to be installed inside the one-way valve, which has the characteristics of high assembly difficulty and cumbersome assembly; on the other hand, the fluid can only flow backward along the outer wall of the valve core, and the cross-sectional area of ​​the fluid passing through this area is limited, resulting in poor fluid circulation effect; on the other hand, the positioning plate inside the one-way valve not only serves as a mounting part for the positioning sleeve to connect the positioning sleeve, but also plays an axial limiting effect on the valve core, which makes the positioning plate bear a large force during operation and is prone to damage. Utility Model Content

[0004] In order to solve the problems of the existing one-way valves mentioned in the above background technology, such as complex internal structure, inconvenient assembly, poor fluid passing performance and easy damage of parts, the present application provides a new one-way valve.

[0005] The present application provides a novel one-way valve adopting the following technical solution:

[0006] A new one-way valve, comprising:

[0007] The valve body has a hollow passage inside and a constricted portion that contracts toward the center;

[0008] A valve seat is installed inside the valve body and has a valve port inside;

[0009] The valve core is a cup-shaped structure, which is movably installed in the hollow channel of the valve body. One end of the cup bottom of the cup-shaped structure is close to the valve port direction of the valve seat, and a liquid hole is opened in the circumferential direction of the valve core.

[0010] By adopting the above technical solution, the liquid holes are opened in the circumferential direction of the valve core, so that the fluid flow has better stability, and the tapered portion is set on the valve body to achieve the effect of limiting the valve core, avoiding the need to set a separate limiting device inside the valve body, thereby increasing the complexity of the overall structure of the one-way valve and the manufacturing cost, and has the advantages of simple structure, easy manufacturing and low cost.

[0011] Optionally, the valve core includes a tapered area close to the valve port and a straight-through area away from the valve port, and the straight-through area is slidably connected to an internal position of the valve body.

[0012] By adopting the above technical solution, the valve core can be limited radially by utilizing the sliding fit between the straight-through area and the inner wall of the valve body, so that the valve core only has the freedom to move along its axial direction, replacing the method of setting a positioning sleeve and a positioning shaft in the center position in the existing technology, and has the advantages of simple structure and good limiting effect.

[0013] Optionally, the liquid through holes are opened in the conical area of ​​the valve core, and there are multiple liquid through holes that are evenly distributed around the center line of the valve core.

[0014] By adopting the above technical solution, since the liquid hole is opened in the tapered area, after the valve is opened, the fluid can quickly pass through the liquid hole and enter the inside of the valve core, and then flow backward, thereby improving the stability and efficiency of the fluid passing through.

[0015] Optionally, the minimum diameter of the tapered area is smaller than the valve port diameter, the maximum diameter of the tapered area is larger than the valve port diameter, and the minimum diameter of the annular area where the liquid through hole is located is larger than the valve port diameter.

[0016] By adopting the above technical solution, the area at the front end of the tapered area is mainly utilized to contact the valve port, thereby achieving a sealing effect on the valve port. At the same time, the design of the liquid hole will not cause fluid leakage, and the sealing effect is better.

[0017] Optionally, at least one through groove recessed toward the center of the valve core is formed on the outer wall of the straight-through area, and the through groove passes through the front and rear ends of the valve core.

[0018] By adopting the above technical solution, on the one hand, the fluid can flow further backward from the through groove position on the basis of passing through the liquid hole, so as to increase the flow rate of the fluid per unit time and improve the fluid passing performance; on the other hand, the structural design of the through groove can reduce the contact area between the straight-through area and the inner wall of the valve body, thereby reducing the probability of the valve core getting stuck when working to a certain extent, and also reducing wear.

[0019] Optionally, the length direction of the through groove is consistent with the axial direction of the valve core.

[0020] By adopting the above technical solution, the fluid can flow more quickly from one end of the valve core to the other end, thereby increasing the flow rate.

[0021] Optionally, the valve core is located in the valve body channel between the valve seat and the necking portion, and the outer diameter of the valve core is larger than the minimum inner diameter of the necking portion on the valve body.

[0022] By adopting the above technical solution, the valve core can be axially positioned through the necking part, replacing the positioning method using the positioning plate in the existing technology. The structure is simpler, and the necking part can improve the structural strength of the valve body to a certain extent, avoiding deformation problems during use.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] The utility model discloses a simple and reasonable design structure, utilizes the sliding cooperation of valve core and valve body to solve the radial shaking problem of valve core during movement, eliminates the traditional one-way valve parts structure such as positioning shaft, simplifies the overall structural design of one-way valve, and has the characteristics of simple assembly and low cost; and adopts the method of combining liquid hole and through groove to realize rapid passage of fluid, improves the stability of fluid passage, in addition, the structural design of the neck part at the end of the valve body can also realize axial positioning of the valve core, avoids the problem that the traditional positioning plate is damaged by impact as a positioning part. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural diagram of the first embodiment of the present invention in the valve-closed state;

[0026] Figure 2 This is a structural diagram of the first embodiment of the present invention in the valve-open state;

[0027] Figure 3 This is a three-dimensional diagram of a valve core according to a first embodiment of the present invention;

[0028] Figure 4 This is a structural diagram of the second embodiment of the present invention in the valve-closed state;

[0029] Figure 5This is a structural diagram of the second embodiment of the present invention in the valve-opening state;

[0030] Figure 6 It is a three-dimensional diagram of the valve core of the second embodiment of the present utility model.

[0031] Description of reference numerals:

[0032] 1. Valve body; 101. Narrowing portion;

[0033] 2. Valve seat; 201. Valve port;

[0034] 3. Valve core; 301. Conical area; 302. Straight-through area; 303. Liquid hole; 304. Through groove. DETAILED DESCRIPTION

[0035] The present application is further described in detail below with reference to the accompanying drawings.

[0036] Example 1

[0037] like Figure 1-3 As shown, the embodiment of the present application discloses a new one-way valve, comprising:

[0038] The valve body 1 has a hollow passage inside, and is provided with a constricted portion 101 that contracts toward the center. In this embodiment, the constricted portion 101 is located near the end of the valve body 1.

[0039] The valve seat 2 is installed inside the valve body 1 and has a valve port 201 inside. Specifically, the valve seat 2 can be fixed to one end of the valve body 1 by welding, threading or other connection methods;

[0040] The valve core 3 is a cup-shaped structure, which is movably installed in the hollow channel of the valve body 1. One end of the cup bottom of the cup-shaped structure is close to the valve port 201 of the valve seat 2, and a liquid hole 303 is opened in the circumferential direction of the valve core 3.

[0041] Specifically, the valve core 3 includes a tapered area 301 close to the valve port 201 and a straight-through area 302 away from the valve port 201. The straight-through area 302 is slidably connected to the internal position of the valve body 1, that is, the straight-through area 302 and the valve body 1 are slidably matched to prevent the valve core 3 from being offset in the radial direction and play a guiding role; more specifically, the tapered area 301 and the straight-through area 302 are smoothly transitioned.

[0042] Specifically, the liquid passage holes 303 are provided in the tapered region 301 of the valve core 3. There are multiple liquid passage holes 303 evenly distributed around the centerline of the valve core 3. In this example, there are four liquid passage holes 303. In other embodiments, a different number of liquid passage holes 303 may be provided based on the actual size of the valve core 3 or the diameter of the liquid passage holes 303, which is not limited here. The liquid passage holes 303 are provided in the tapered region 301 primarily to ensure that fluid can immediately pass through the liquid passage holes 303 after the valve is opened.

[0043] Specifically, the minimum diameter of the conical area 301 is smaller than the diameter of the valve port 201, the maximum diameter of the conical area 301 is larger than the diameter of the valve port 201, and the minimum diameter of the annular area where the liquid hole 303 is located is larger than the diameter of the valve port 201. This setting is mainly to use the conical area 301 to seal the valve port 201, and during the sealing process, the liquid hole 303 will not cause leakage of the valve core 3.

[0044] Specifically, the valve core 3 is located in the valve body 1 channel between the valve seat 2 and the tapered portion 101. The outer diameter of the valve core 3 is larger than the minimum inner diameter of the tapered portion 101 on the valve body 1. The tapered portion 101 can be used to limit the valve core 3 to prevent the valve core 3 from detaching from the inside of the valve body 1.

[0045] Example 2

[0046] like Figure 4-6 As shown, based on the above-mentioned embodiment 1, this embodiment has at least one through groove 304 recessed toward the center of the valve core 3 on the outer wall of the straight-through area 302, and the through groove 304 passes through the front and rear ends of the valve core 3. In this example, there are 8 through grooves 304, which are evenly distributed around the center of the valve core 3. In other embodiments, the number of through grooves 304 can be specifically set according to actual conditions. In addition, the cross-sectional shape of the through groove 304 is U-shaped in this example. In other embodiments, it can also be designed to be rectangular, elliptical, V-shaped, etc., which is not limited here.

[0047] In this example, the length direction of the through groove 304 is consistent with the axial direction of the valve core 3, that is, the length direction of the through groove 304 is parallel to the axial direction of the valve core 3, which is used to make the two ends of the through groove 304 have a shorter distance and allow the fluid to pass through more quickly.

[0048] In actual work, Figure 4 As shown, the one-way valve is in the closed state, at which point the front end of the tapered area 301 abuts against the valve port 201, achieving the valve closing effect; Figure 5As shown, the one-way valve is in the open state. When the valve is open, the fluid flows from the inside of the valve seat 2 to the right, and the fluid exerts a force on the valve core 3, causing the valve core 3 to change from the closed state to the open state. When the valve core 3 moves until it contacts the constricted portion 101, a part of the fluid can enter the inside of the valve core 3 from the liquid hole 303 and then flow to the right, and another part of the fluid flows to the right from the through groove 304, which can improve the fluid passing performance and the flow rate per unit time.

[0049] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A new one-way valve, characterized in that: include: The valve body (1) has a hollow passage therein and is provided with a constricted portion (101) that contracts toward the center. A valve seat (2) is installed inside the valve body (1) and has a valve port (201) therein; The valve core (3) is a cup-shaped structure and is movably installed in the hollow channel of the valve body (1). One end of the cup bottom of the cup-shaped structure is close to the valve port (201) of the valve seat (2), and a liquid hole (303) is opened in the circumferential direction of the valve core (3).

2. A novel one-way valve according to claim 1, characterized in that: The valve core (3) comprises a tapered area (301) close to the valve port (201) and a straight-through area (302) away from the valve port (201), and the straight-through area (302) is slidably connected to an internal position of the valve body (1).

3. A novel one-way valve according to claim 2, characterized in that: The liquid through holes (303) are provided at the tapered area (301) of the valve core (3). There are a plurality of liquid through holes (303) which are evenly distributed around the center line of the valve core (3).

4. A novel one-way valve according to claim 3, characterized in that: The minimum diameter of the tapered area (301) is smaller than the diameter of the valve port (201), the maximum diameter of the tapered area (301) is larger than the diameter of the valve port (201), and the minimum diameter of the annular area where the liquid hole (303) is located is larger than the diameter of the valve port (201).

5. A novel one-way valve according to claim 2, characterized in that: At least one through groove (304) recessed toward the center of the valve core (3) is provided on the outer wall of the straight-through area (302), and the through groove (304) passes through the front and rear ends of the valve core (3).

6. A novel one-way valve according to claim 5, characterized in that: The length direction of the through groove (304) is consistent with the axial direction of the valve core (3).

7. A novel one-way valve according to claim 1, characterized in that: The valve core (3) is located in the valve body (1) channel between the valve seat (2) and the constricted portion (101), and the outer diameter of the valve core (3) is larger than the minimum inner diameter of the constricted portion (101) on the valve body (1).

Images