One-way valve

Abstract

The one-way valve comprises a base, a guide seat and a plurality of valve balls, a valve seat is arranged in the base, flow channels are formed in the valve seat, the guide seat comprises a shell and a guide block, a mounting groove matched with the guide block in shape is formed in one end of the shell, and first drainage holes as many as the flow channels are formed in the other end of the shell; second drainage holes with the same number as the flow channels are formed in the guide block, guide grooves used for guiding the valve ball are formed in the side walls of the second drainage holes, and the valve ball can move in the space formed by the guide grooves and the second drainage holes and is limited between the first drainage holes and the flow channels. The guide seat is divided into the shell and the guide block, the shell is mainly connected with an external pipeline, the guide block mainly guides the motion trail of the valve ball and provides a second drainage hole for medium circulation, the shapes of the shell and the guide block are regular and uniform, stress concentration is effectively avoided, and the defects of air holes and the like in the production process are avoided. And the whole structure is more convenient to process.

Description

Technical Field

[0001] The invention relates to the field of valves, in particular to a one-way valve. Background Art

[0002] A Chinese patent (Announcement No.: CN213016757U) discloses a one-way valve, including a base, a guide seat and a plurality of valve balls. A valve seat is fixed in the base, and a flow channel is provided on the valve seat. The valve ball moves axially in the guide seat to control the opening and closing of the flow channel. However, under the existing structure, the guide seat is a separate component, which needs to be connected to the external pipeline to maintain a large flow performance and guide the movement trajectory of the valve ball, resulting in a more complex structure in the guide seat, which is difficult to process, and there are many places where stress is easily concentrated, which is prone to air holes and easy to wear during use. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a one-way valve, comprising a base, a guide seat and a plurality of valve balls, wherein a valve seat is arranged in the base, and the valve seat is provided with flow channels of the same number as the valve ball, and the diameter of the valve ball is larger than the diameter of the flow channels, and the guide seat comprises an outer shell and a guide block, one end of the outer shell is provided with an installation groove whose shape is adapted to the guide block, the other end of the outer shell is provided with a first drainage hole of the same number as the flow channels, the guide block is provided with a second drainage hole of the same number as the flow channels, and a guide groove for guiding the valve ball is provided on the side wall of the second drainage hole, and the valve ball can move in the space formed by the guide groove and the second drainage hole and be confined between the first drainage hole and the flow channel. Preferably, the cross section of the guide groove is arc-shaped and the diameter is the same as the diameter of the valve ball.

[0004] Preferably, there are two guide grooves in each drainage hole 2, and the two guide grooves are arranged on the side walls on opposite sides of the drainage hole 2.

[0005] Preferably, a spherical notch whose shape matches that of the valve ball is formed at one end of the drainage hole facing the mounting groove.

[0006] Preferably, a positioning groove is provided at the bottom of the installation groove, and a positioning ring protruding upward is fixed to the top of the base, and the shape of the positioning ring is adapted to the positioning groove.

[0007] Preferably, positioning pins are provided at both ends of the guide block, and pin holes are provided on the outer shell and the valve seat.

[0008] Preferably, a sealing groove is provided at the top of the positioning groove, and a sealing ring is provided in the sealing groove.

[0009] Preferably, a connecting opening is provided on the side wall of the second drainage hole so that the plurality of second drainage holes are connected to each other.

[0010] The beneficial effects of the present invention are as follows: the guide seat is divided into an outer shell and a guide block, the outer shell is mainly connected to an external pipeline, the guide block mainly guides the movement trajectory of the valve ball and provides a drainage hole 2 for the medium circulation, the shapes of the outer shell and the guide block are relatively regular and uniform, which effectively avoids stress concentration, avoids defects such as air holes in the production process, and the overall structure is more convenient to process. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is the overall structure diagram of the present invention; Figure 2 An exploded view of the present invention; Figure 3 This is a structural diagram of the housing and guide block. DETAILED DESCRIPTION

[0012] The present invention will be further described below in detail with reference to the embodiments shown in the accompanying drawings.

[0013] See also Figure 1-Figure 2 The present invention provides a one-way valve, including a base 1, a guide seat 2 and a plurality of valve balls 3. A valve seat 4 is arranged in the base 1. The valve seat 4 is provided with flow channels 5 having the same number as the valve ball 3. The diameter of the valve ball 3 is larger than the diameter of the flow channel 5. The guide seat 2 includes a shell 21 and a guide block 22. One end of the shell 21 is provided with a mounting groove whose shape is adapted to the guide block 22. The other end of the shell 21 is provided with a drainage hole 1 61 having the same number as the flow channel 5. The guide block 22 is provided with a drainage hole 2 62 having the same number as the flow channel 5. A guide groove 63 for guiding the valve ball 3 is provided on the side wall of the drainage hole 2 62. The valve ball 3 can move in the space formed by the guide groove 63 and the drainage hole 2 62 and is restricted between the drainage hole 1 61 and the flow channel 5.

[0014] When in use, both ends of the one-way valve are connected to equipment and pipelines, and the medium flows into the one-way valve from the drainage hole 61, pushing the valve ball 3 to fit tightly with the flow channel 5, thereby blocking the circulation or backflow of the medium.

[0015] When the medium needs to flow, the valve ball 3 is pushed out through the pushing structure on other equipment, and the medium can pass through the drainage hole 1 61 normally.

[0016] The guide seat 2 is divided into an outer shell 21 and a guide block 22. The outer shell 21 is mainly connected to an external pipeline, and the guide block 22 mainly guides the movement trajectory of the valve ball 3 and provides a drainage hole 62 for the flow of the medium. The shapes of the outer shell 21 and the guide block 22 are relatively regular and uniform, which effectively avoids stress concentration and defects such as air holes in the production process, and the overall structure is more convenient to process.

[0017] Furthermore, the cross section of the guide groove 63 is arc-shaped and has the same diameter as the valve ball 3. The guide groove 63 closely matches the valve ball 3, more accurately guiding the movement trajectory of the valve ball 3, and avoiding the valve ball 3 from deviating during movement, which affects the opening and closing efficiency.

[0018] Furthermore, the number of guide grooves 63 in each second drainage hole 62 is two, and the two guide grooves 63 are arranged on the side walls on the opposite sides of the second drainage hole 62 .

[0019] By providing the two guide grooves 63 , the valve ball 3 is guided to move more smoothly, and the mass distribution in the guide block is made more uniform, thereby reducing stress concentration.

[0020] Furthermore, a spherical notch 611 whose shape matches that of the valve ball 3 is opened at one end of the drainage hole 61 toward the mounting groove. During the movement of the valve ball 3, the spherical notch 611 increases the contact area between the drainage hole 61 and the valve ball 3, thereby reducing the impact force between the valve ball 3 and the drainage hole 61.

[0021] Furthermore, a positioning groove 71 is formed at the bottom of the installation groove, and a positioning ring 72 protruding upward is fixed to the top of the base 1 , and the shape of the positioning ring 72 is adapted to the positioning groove 71 .

[0022] The positioning ring 72 and the positioning groove 71 cooperate to position the base 1 and the guide seat 2, making the structure more stable.

[0023] Furthermore, positioning pins 91 are provided at both ends of the guide block 22 , and pin holes 92 are provided on the housing 21 and the valve seat 4 .

[0024] Through the cooperation of the positioning pin 91 and the pin hole 92, the guide block 22, the housing 21 and the valve seat 4 are positioned, so that the structure is more stable and pre-positioning is convenient during installation.

[0025] Furthermore, a sealing groove 81 is formed at the top of the positioning groove 71 , and a sealing ring 82 is disposed in the sealing groove 81 .

[0026] The provision of the sealing ring 82 improves the sealing performance between the base 1 and the guide seat 2 to prevent medium leakage.

[0027] Reference Figure 2 and Figure 3 Furthermore, a connecting port 10 is provided on the side wall of the drainage hole 2 62 to interconnect the plurality of drainage holes 2 62 . When the medium flows into the drainage hole 2 62 , a larger buffer space can be provided, and the overall flow channel 5 is enlarged, thereby improving the flow performance.

[0028] The above are only preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A one-way valve, comprising a base (1), a guide seat (2) and a plurality of valve balls (3), wherein a valve seat (4) is arranged in the base (1), and the valve seat (4) is provided with flow channels (5) having the same number as the valve balls (3), wherein the diameter of the valve balls (3) is larger than the diameter of the flow channels (5), and wherein: The guide seat (2) comprises a shell (21) and a guide block (22); one end of the shell (21) is provided with a mounting groove whose shape matches that of the guide block (22); the other end of the shell (21) is provided with drainage holes (61) whose number is the same as that of the flow channel (5); the guide block (22) is provided with drainage holes (62) whose number is the same as that of the flow channel (5); a guide groove (63) for guiding the valve ball (3) is provided on the side wall of the drainage hole (62); the valve ball (3) can move in a space formed by the guide groove (63) and the drainage hole (62) and is restricted between the drainage hole (61) and the flow channel (5).

2. A one-way valve according to claim 1, characterized in that: The cross section of the guide groove (63) is in the shape of an arc and has a diameter that is the same as the diameter of the valve ball (3).

3. A one-way valve according to claim 1, characterized in that: There are two guide grooves (63) in each drainage hole (62), and the two guide grooves (63) are arranged on the side walls on opposite sides of the drainage hole (62).

4. A one-way valve according to claim 1, characterized in that: A spherical notch (611) having a shape matching that of the valve ball (3) is formed at one end of the drainage hole 1 (61) facing the mounting groove.

5. A one-way valve according to claim 1, characterized in that: A positioning groove (71) is provided at the bottom of the installation groove, and a positioning ring (72) protruding upward is fixed to the top of the base (1), wherein the shape of the positioning ring (72) matches the positioning groove (71).

6. A one-way valve according to claim 1, characterized in that: Positioning pins (91) are provided at both ends of the guide block (22), and pin holes (92) are provided on the housing (21) and the valve seat (4).

7. A one-way valve according to claim 5, characterized in that: A sealing groove (81) is provided at the top end of the positioning groove (71), and a sealing ring (82) is provided in the sealing groove (81).

8. A one-way valve according to claim 1, characterized in that: A connecting opening (10) is provided on the side wall of the second drainage hole (62) so that the plurality of second drainage holes (62) are connected to each other.

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