Sealing element for multi-way valve and multi-way valve

Abstract

The sealing element comprises a sealing inner ring and a sealing outer ring, the sealing outer ring is arranged on the periphery of the sealing inner ring, a gap exists between the sealing inner ring and the sealing outer ring, the sealing inner ring and the sealing outer ring are connected through a plurality of convex ribs, and the thickness of the sealing inner ring is smaller than that of the sealing outer ring; comprising a multi-way valve body, and a sealing groove used for containing a sealing piece is formed in the top of the multi-way valve body; compared with the prior art, the thickness of a sealing inner ring and the thickness of a sealing outer ring in a sealing piece are consistent, and only the thickness of the sealing inner ring is reduced; when the multi-way valve is used, due to different compression amounts of the sealing inner ring and the sealing outer ring, sealing of a channel opening can still be guaranteed; meanwhile, the counter-acting force generated by the sealing inner ring on the multi-way valve body is reduced, the deformation degree of the bottom of the valve body is reduced, the inner leakage sealing effect is improved, the valve opening torque of the water valve is reduced, the service life of an actuator is prolonged, and the actuator cost is reduced.

Description

Technical Field

[0001] The present invention relates to the field of seals, and particularly to a seal for a multi-way valve and a multi-way valve. Background Art

[0002] In the existing multi-way valve, a seal is provided on the top, and the overall thickness of the seal is uniform. During the use of the multi-way valve, the reaction force generated by the inner ring of the seal due to sealing against the bottom of the valve body is likely to cause deformation of the valve body, thereby affecting the sealing effect. For this reason, we propose a seal for a multi-way valve. Summary of the Invention

[0003] The purpose of the present invention is to provide a seal for a multi-way valve and a multi-way valve to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solutions for a seal for a multi-way valve:

[0005] The seal includes a sealing inner ring and a sealing outer ring. The sealing outer ring is arranged on the outer periphery of the sealing inner ring. There is a gap between the sealing inner ring and the sealing outer ring and they are connected by a plurality of ribs. The thickness of the sealing inner ring is less than that of the sealing outer ring.

[0006] Preferably, the sealing inner ring includes a first sealing ring and a second sealing ring arranged coaxially. The second sealing ring is arranged on the outer periphery of the first sealing ring. A plurality of ribs are arranged between the first sealing ring and the second sealing ring.

[0007] Preferably, a plurality of limiting blocks are evenly arranged on both the inner and outer sides of the sealing outer ring.

[0008] Preferably, the seal is made of rubber material.

[0009] The present invention provides the following technical solutions for a multi-way valve: including the above seal;

[0010] Preferably, it includes a multi-way valve body. A sealing groove for placing the seal is opened at the top of the multi-way valve body.

[0011] Preferably, the sealing outer ring is in interference fit with the sealing groove, and the sealing inner ring is in clearance fit with the sealing groove.

[0012] Preferably, the thickness of the sealing inner ring is greater than the depth of the sealing groove.

[0013] Preferably, a plurality of positioning seats are evenly distributed on the outer periphery of the multi-way valve body. The plurality of positioning seats are used for fixing with external connecting parts.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] Compared with the prior art where the thicknesses of the inner sealing ring and the outer sealing ring in the seal are the same, the present invention only reduces the thickness of the inner sealing ring; when the multi-way valve is in use, due to the different compression amounts of the inner sealing ring and the outer sealing ring, the sealing of the flow ports can still be ensured; at the same time, the reaction force generated by the inner sealing ring on the multi-way valve body is reduced, the deformation degree of the bottom of the valve body is decreased, the internal leakage sealing effect is improved, the opening torque of the water valve is reduced, the service life of the actuator is extended, and the cost of the actuator is lowered.

[0016] Secondly, by reducing the thickness of the inner sealing ring, the rubber material used is reduced, and the cost is lower. Brief Description of the Drawings

[0017] Figure 1 is a schematic structural view of the seal in the present invention;

[0018] Figure 2 is a schematic overall structural view of the multi-way valve in the present invention;

[0019] Figure 3 is a schematic structural view of the multi-way valve body in the present invention;

[0020] Figure 4 is Figure 2 a sectional view of;

[0021] In the figure: 1, seal; 2, multi-way valve body; 12, inner sealing ring; 13, outer sealing ring; 14, limit block; 15, rib; 121, first sealing ring; 122, second sealing ring; 21, sealing groove; 22, positioning shaft; 23, positioning seat. Detailed Description of the Invention

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Please refer to Figures 1 - 4 , a technical solution is provided for a seal for a multi-way valve in the present invention: The seal 1 includes an inner sealing ring 12 and an outer sealing ring 13 arranged coaxially. The outer sealing ring 13 is arranged on the outer periphery of the inner sealing ring 12. There is a gap between the inner sealing ring 12 and the outer sealing ring 13 and they are connected by a plurality of radially distributed ribs 15. The thickness of the inner sealing ring 12 is less than the thickness of the outer sealing ring 13, and a plurality of independent flow ports are formed among the inner sealing ring 12, the outer sealing ring 13, and the ribs 15.

[0024] That is, multiple independent flow ports are formed by the cooperation of the sealing inner ring 12, the sealing outer ring 13, and the rib 15. At the same time, when injecting liquid into the flow ports, the sealing outer ring prevents the liquid from leaking outwards; and through the sealing of the sealing inner ring 12 and the rib 15 between each internal flow channel, it is ensured that the flow ports are independently circulated, and there is no leakage between adjacent flow channels, ensuring the sealing effect of the multi-way valve.

[0025] Secondly, when using the multi-way valve, the acting force of the sealing outer ring on the valve body can be supported by the side wall of the bottom of the valve body to prevent it from deforming; while the sealing inner ring acts directly on the middle part of the multi-way valve body, and the middle part of the multi-way valve body is suspended without support at the bottom, so it is more likely to deform due to elastic force; in the present invention, without changing the thickness of the sealing outer ring in the existing seal, only the thickness of the sealing inner ring is reduced; when using the multi-way valve, the compression amounts of the sealing inner ring and the sealing outer ring are different, so as to ensure the sealing of the flow channel, reduce the elastic force generated on the multi-way valve body, reduce the deformation degree of the bottom of the valve body, improve the sealing effect; also reduce the opening torque of the water valve, extend the service life of the actuator, and reduce the cost of the actuator; at the same time, by reducing the thickness of the sealing inner ring 12, the rubber material is reduced, and the cost is lower.

[0026] In a further embodiment, the sealing inner ring 12 includes a first sealing ring 121 and a second sealing ring 122 arranged coaxially. The second sealing ring 122 is spaced apart from the outer periphery of the first sealing ring 121. A plurality of ribs 15 are arranged in the radial direction between the first sealing ring 121 and the second sealing ring 122. The ribs 15 divide the area between the first sealing ring 121 and the second sealing ring 122 into a plurality of independent liquid channels;

[0027] That is, by dividing a plurality of independent liquid channels, it is convenient for the liquid to flow simultaneously at a plurality of different flow ports, so as to achieve the purpose of multi-way of the multi-way valve.

[0028] In a further embodiment, a plurality of limiting blocks 14 are uniformly arranged on the inner and outer side walls of the sealing outer ring 13. The limiting blocks 14 are made of rubber material; that is, through the limiting blocks 14, the sealing outer ring 13 is stably limited on the multi-way valve body 2 and kept in a vertical state; that is, when the multi-way valve body 2 is fixed to an external connecting member, it is avoided that the sealing outer ring 13 is toppled on the multi-way valve body 2 due to extrusion, which affects the sealing effect.

[0029] In a further embodiment, the seal 1 is made of rubber material, so that when the multi-way water valve is connected to the outside, due to the extrusion of the seal 1, it deforms, and also provides better support for the side wall of the liquid channel when the liquid flows, preventing the liquid from leaking outwards.

[0030] A multi-way valve in the present invention, the multi-way valve includes the above-mentioned seal, and the multi-way valve further includes a multi-way valve body 2. A sealing groove 21 for placing the seal 1 is provided at the top of the multi-way valve body 2; that is, the seal 2 is limited in position to facilitate sealing of the liquid passage;

[0031] In a further embodiment, the sealing groove 21 includes a sealing outer groove corresponding to the sealing outer ring 13. The sealing outer ring 13 is press-fitted into the sealing outer groove through the limiting blocks 14 provided on both sides; the sealing groove 21 further includes a sealing inner groove corresponding to the sealing inner ring 12, and the sealing inner ring 12 is in clearance fit with the sealing inner groove;

[0032] That is, the vertical limit of the sealing outer ring 13 in the sealing outer groove is realized through the limiting blocks 14, avoiding tipping due to external extrusion and affecting the sealing effect; at the same time, through the clearance fit between the sealing inner ring 12 and the sealing inner groove, it is convenient to install the sealing inner ring 12 on the multi-way valve body 2, and when the multi-way valve is not connected to the external connecting piece, the sealing inner ring 12 does not exert extrusion on the multi-way valve body 2, reducing the possibility of deformation of the multi-way valve body and providing the sealing effect.

[0033] In a further embodiment, the thickness of the sealing outer ring 13 is greater than the thickness of the sealing outer groove, and the thickness of the sealing inner ring 12 is greater than the thickness of the sealing inner groove; that is, when connecting with the external connecting piece of the multi-way valve body 2, the seal 1 is in a squeezed state because it is higher than the sealing groove 21, causing the seal 1 to undergo elastic deformation to achieve the sealing effect; at the same time, because the thickness of the sealing inner ring 12 is less than that of the sealing outer ring 13, when the external connecting piece exerts extrusion on it, the deformation amount of the sealing inner ring 12 is less than that of the sealing outer ring 13, further avoiding the bottom of the valve body from deforming due to the too large reaction force of the sealing inner ring 12, thereby affecting the internal leakage seal.

[0034] In a further embodiment, a plurality of positioning seats 23 are uniformly distributed on the outer periphery of the multi-way valve body 2. The plurality of positioning seats 23 are used for connecting and fixing with an external connecting piece. Threads are provided in the positioning seats 23, and a screw rod is further included. The external connecting piece can be threadedly connected to the positioning seat through the screw rod;

[0035] That is, the external connecting piece is fixed on the positioning seat through the screw rod to realize the fixed connection of the multi-way valve.

[0036] In a further embodiment, a positioning shaft 22 adapted to the first sealing ring 121 is provided on the multi-way valve body 2. The positioning shaft 22 penetrates through the first sealing ring 121 to position it.

[0037] That is, the sealing member is positioned by the positioning shaft 22 penetrating through the first sealing ring 121, thereby ensuring the stability of the sealing member 1 on the multi-way valve body 2 and preventing it from shifting, thereby affecting the sealing effect.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sealing member for a multi-way valve, the sealing member (1) comprising a sealing inner ring (12) and a sealing outer ring (13), characterized in that: The sealing outer ring (13) is arranged on the outer periphery of the sealing inner ring (12); there is a gap between the sealing inner ring (12) and the sealing outer ring (13) and they are connected via a plurality of convex ribs (15); the thickness of the sealing inner ring (12) is smaller than the thickness of the sealing outer ring (13).

2. A sealing member for a multi-way valve according to claim 1, characterized in that: The sealing inner ring (12) comprises a first sealing ring (121) and a second sealing ring (122) which are coaxially arranged, the second sealing ring (122) being arranged at intervals on the outer circumference of the first sealing ring (121), and a plurality of convex ribs (15) being arranged between the first sealing ring (121) and the second sealing ring (122).

3. A sealing member for a multi-way valve according to claim 1, characterized in that: A plurality of limit blocks (14) are evenly arranged on both inner and outer sides of the sealing outer ring (13).

4. A sealing member for a multi-way valve according to claim 1, characterized in that: The sealing element (1) is made of rubber.

5. A multi-way valve, characterized in that: The invention comprises the sealing element as claimed in claims 1 to 4 above.

6. The multi-way valve according to claim 5, characterized in that: It comprises a multi-way valve body (2), wherein a sealing groove (21) for accommodating a sealing element (1) is provided at the top of the multi-way valve body (2).

7. The multi-way valve according to claim 6, characterized in that: The sealing outer ring (13) and the sealing groove (21) are interference fit, and the sealing inner ring (12) and the sealing groove (21) are clearance fit.

8. The multi-way valve according to claim 6, characterized in that: The thickness of the sealing inner ring (12) is greater than the depth of the sealing groove (21).

9. The multi-way valve according to claim 6, characterized in that: A plurality of positioning seats (23) are evenly distributed on the outer periphery of the multi-way valve body (1), and the plurality of positioning seats (23) are used for fixing with external connecting parts.

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