Seal ring structure and end suction pump
By bending the inner ring of the ring cover to form an insertion part that is inserted into the sealing ring, the problems of sealing ring rotation and processing difficulty are solved, thus achieving the stability of the sealing ring and the efficient operation of the pump.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU NANPU FLUID MASCH CO LTD
- Filing Date
- 2025-07-15
- Publication Date
- 2026-05-29
AI Technical Summary
In existing technologies, the impeller sealing ring structure is prone to problems such as insufficient stamping of protrusions during processing, which can cause the sealing ring to rotate or get stuck, resulting in noise and wear, affecting the performance and use of the pump, and is also difficult to process.
A sealing ring structure is designed, in which the inner ring of the ring cover is bent to form an insertion part that is inserted into the sealing ring, thereby restricting the rotation of the sealing ring. The outer ring of the ring cover is fitted to the pump body connection surface, reducing the processing difficulty.
It effectively restricts the rotation of the sealing ring relative to the impeller, reduces wear and noise, improves pump stability and production efficiency, and reduces the processing difficulty of the ring cover.
Smart Images
Figure CN224301111U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pump technology, and in particular to a sealing ring structure and an end-suction pump. Background Technology
[0002] To seal the gap between the pump inlet and the impeller, an impeller sealing ring structure is usually installed.
[0003] In the impeller sealing ring structure of related technologies, the ring cover size is larger than the sealing ring size. In order to prevent the sealing ring from rotating with the impeller, the original sealing ring cover is fixed by setting a protrusion. However, due to factors such as production precision, it is easy for the protrusion to be not stamped in place, causing the actual sealing ring to rotate or get stuck. This results in noise during rotation and wear on the impeller mouth ring when stuck, affecting the pump's performance and use. In severe cases, it can directly wear the impeller and cause the water pump seal to fail. There is also a patent with publication number CN202900789U, named "New Floating Mouth Ring Structure". Although it sets an axial protrusion on the outer ring of the mouth ring seat and the mouth ring seat also needs to set a set screw on the edge of the outer ring for fixing the mouth ring seat, this greatly increases the processing difficulty of the mouth ring seat. Utility Model Content
[0004] The main purpose of this invention is to propose a sealing ring structure and an end-suction pump, which aims to reduce the machining difficulty of the inlet ring seat while restricting the sealing ring from rotating with the impeller and reducing the friction between the sealing ring and the impeller.
[0005] To achieve the above objectives, the sealing ring structure proposed in this utility model includes:
[0006] A pump body, wherein the pump body is provided with an inlet and a connecting surface is formed on the pump body;
[0007] A ring cover that clamps and restricts a sealing ring within the pump body;
[0008] An impeller front cover, one end of which is inserted into the inlet, and a sealing ring is fitted onto the insertion end of the impeller front cover;
[0009] The outer ring portion of the ring cover fits against the connecting surface and is connected to the pump body. The inner ring portion of the ring cover is bent toward the sealing ring to form an insertion part. The insertion part is inserted into the sealing ring to restrict the rotation of the sealing ring.
[0010] In one embodiment, the extension direction of the insertion portion is the same as the opening direction of the inlet.
[0011] In one embodiment, the insertion portion passes through the sealing ring.
[0012] In one embodiment, the sealing ring is provided with a clearance opening, which penetrates the sealing ring, faces the insertion part, and the insertion part is inserted into the clearance opening.
[0013] In one embodiment, the clearance opening is provided on the outer edge of the sealing ring, and the clearance opening is located on a side away from the center of the sealing ring.
[0014] In one embodiment, the insertion portion includes a first side surface and a second side surface, wherein the first side surface abuts against the circumferential sidewall of the first side surface opposite to the clearance opening, and the second side surface abuts against the circumferential sidewall of the second side surface opposite to the clearance opening.
[0015] In one embodiment, the ring cover is provided with a plurality of the insertion portions, and the sealing ring is provided with a plurality of the clearance openings, wherein the insertion portions are correspondingly inserted into the clearance openings.
[0016] In one embodiment, a sealing ring groove centered on the inlet is provided on the side of the pump body, and the sealing ring groove communicates with the inlet. The sealing ring is disposed in the sealing ring groove, and the ring cover is sealed in the sealing ring groove.
[0017] In one embodiment, a first gap is provided between the sealing ring and the ring cover, and / or a second gap is provided between the sealing ring and the axial sidewall of the sealing ring groove.
[0018] This utility model also proposes an end-suction pump, including the aforementioned sealing ring structure.
[0019] The technical solution of this utility model involves inserting a bend in the inner ring of the ring cover into the sealing ring, ensuring that the insert does not detach from the sealing ring during axial floating. This improves the restraining effect of the insert on the sealing ring, thereby enhancing the restriction of the sealing ring's rotation relative to the impeller. Simultaneously, it reduces wear between the impeller and the sealing ring, decreases noise generated by the sealing ring rotating with the impeller, and improves the stability of the pump. Furthermore, by stamping and bending the inner ring of the ring cover, and ensuring a close fit between the outer ring of the ring cover and the pump body connection surface, the processing difficulty of the ring cover is greatly reduced, thus improving production efficiency. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0021] Figure 1 A schematic diagram of an embodiment of the sealing ring structure provided by this utility model;
[0022] Figure 2 A schematic diagram of another embodiment of the sealing ring structure provided by this utility model;
[0023] Figure 3 A schematic diagram of the sealing ring structure in one embodiment of the sealing ring structure provided by this utility model;
[0024] Figure 4 A schematic diagram of the front structure of the ring cover in one embodiment of the sealing ring structure provided by this utility model;
[0025] Figure 5 A schematic diagram of the reverse side structure of the ring cap in one embodiment of the sealing ring structure provided by this utility model;
[0026] Figure 6 A top view of an embodiment of the end-suction pump provided by this utility model;
[0027] Figure 7 for Figure 6 Sectional view at point AA;
[0028] Figure 8 for Figure 7 A magnified view of a section at point B.
[0029] Explanation of icon numbers:
[0030] 100. Sealing ring structure; 10. Pump body; 11. Inlet; 12. Sealing ring groove; 20. Ring cover; 21. Insertion part; 22. Notch; 30. Sealing ring; 31. Clearance opening; 40. Impeller front cover.
[0031] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0033] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.
[0034] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0035] To seal the gap between the pump inlet and the impeller, an impeller sealing ring structure is usually installed.
[0036] In the impeller sealing ring structure of related technologies, the ring cover size is larger than the sealing ring size. In order to prevent the sealing ring from rotating with the impeller, the original sealing ring cover is fixed by setting a protrusion. However, due to factors such as production precision, it is easy for the protrusion to be not stamped in place, causing the actual sealing ring to rotate or get stuck. This results in noise during rotation and wear on the impeller mouth ring when stuck, affecting the pump's performance and use. In severe cases, it can directly wear the impeller and cause the water pump seal to fail. There is also a patent with publication number CN202900789U, named "New Floating Mouth Ring Structure". Although it sets an axial protrusion on the outer ring of the mouth ring seat and the mouth ring seat also needs to set a set screw on the edge of the outer ring for fixing the mouth ring seat, this greatly increases the processing difficulty of the mouth ring seat.
[0037] This utility model proposes a sealing ring structure.
[0038] Please see Figure 1 In one embodiment of this utility model, the sealing ring structure includes:
[0039] Pump body 10, with inlet 11 and connecting surface formed on pump body 10;
[0040] Ring cover 20, ring cover 20 clamps and restricts sealing ring 30 to pump body 10;
[0041] Impeller front cover 40, one end of impeller front cover 40 is inserted into inlet 11, and sealing ring 30 is sleeved on the insertion end of impeller front cover 40;
[0042] The outer ring of the ring cover 20 fits against the connecting surface and is connected to the pump body 10. The inner ring of the ring cover 20 is bent toward the sealing ring 30 to form a plug-in part 21. The plug-in part 21 is inserted into the sealing ring 30 to restrict the rotation of the sealing ring 30.
[0043] like Figure 1 As shown, the connecting surface is a plane, and the surface of the ring cover 20 facing the pump body 10 is a plane. When the connecting surface is connected to the ring cover 20, the ring cover 20 is attached to the connecting surface and the contact area between the ring cover 20 and the connecting surface increases, thereby improving the stability and tightness of the connection between the ring cover 20 and the connecting surface.
[0044] like Figure 1 As shown, the ring cover 20 clamps and restricts the sealing ring 30 onto the pump body 10, and the insertion end of the impeller front cover 40 is connected to the sealing ring 30.
[0045] Understandably, the sealing ring 30 seals the gap between the impeller front cover 40 and the pump body 10.
[0046] like Figure 2 As shown, the diameter of the ring cover 20 is larger than the diameter of the sealing ring 30.
[0047] Thus, when the ring cover 20 is connected to the pump body 10, the edge of the ring cover 20 is fixed to the pump body 10 by screws.
[0048] like Figure 4 and Figure 5 As shown, the inner ring of the ring cover 20 is bent toward the sealing ring 30, that is, the inner ring of the ring cover 20 is punched open to form a notch 22, and then bent at the notch 22 to form the insertion part 21.
[0049] By stamping the opening and bending it, the processing is simplified, and the problem that the resulting plug part 21 cannot restrict the rotation of the sealing ring 30 due to processing technology issues is avoided.
[0050] The technical solution of this utility model involves inserting the insertion part 21, formed by bending the inner ring of the ring cover 20, into the sealing ring 30. The insertion part 21 extends deep into the sealing ring 30, ensuring that the insertion part 21 does not detach from the sealing ring 30 during axial floating. This improves the restrictive effect of the insertion part 21 on the sealing ring 30, thereby enhancing the restriction of the sealing ring 30 relative to the impeller rotation. Simultaneously, it reduces wear between the impeller and the sealing ring 30, reduces noise generated by the sealing ring 30 rotating with the impeller, and improves the stability of the pump. Furthermore, by stamping and bending the inner ring of the ring cover 20, and ensuring the outer ring of the ring cover 20 is in close contact with the pump body 10, the processing difficulty of the ring cover 20 is greatly reduced, which is beneficial to improving the production efficiency of the ring cover 20.
[0051] In one embodiment, the extension direction of the insertion portion 21 is the same as the opening direction of the inlet 11.
[0052] It should be noted that the ring cover restricts the sealing ring 30 to the pump body 10. If the gap between the ring cover 20 and the pump body 10 is too small, the risk of friction between the sealing ring 30 and the ring cover 20 will easily increase. Therefore, space is provided for the axial movement of the sealing ring 30 to reduce the risk of friction between the sealing ring 30 and the ring cover 20.
[0053] It is understandable that, in order to facilitate the axial movement of the sealing ring 30, the extension direction of the insertion part 21 is the same as the opening direction of the inlet 11, so that the insertion part 21 does not restrict the axial movement of the sealing ring 30, thereby reducing the restriction on the axial movement of the sealing ring 30 and facilitating the axial movement of the sealing ring 30.
[0054] In one embodiment, the insertion portion 21 passes through the sealing ring 30.
[0055] During the axial movement of the sealing ring 30, the insertion part 21 disengages from the sealing ring 30, causing the insertion part 21 to abut against the surface of the sealing ring 30. This can cause the sealing ring 30 to jam, affecting the performance and use of the pump.
[0056] Therefore, a sealing ring 30 is inserted through the insertion part 21, so that the sealing ring 30 is always restricted by the insertion part 21 during axial movement. Thus, the insertion part 21 will not abut against the axial surface of the sealing ring 30, preventing the sealing ring 30 from getting stuck, thereby ensuring the normal sealing effect of the sealing ring.
[0057] In one embodiment, a clearance opening 31 is provided on the sealing ring 30, and the clearance opening 31 penetrates the sealing ring 30. The clearance opening 31 is directly opposite the insertion part 21, and the insertion part 21 is inserted into the clearance opening 31.
[0058] It is understandable that the clearance opening 31 on the sealing ring 30 provides space for the insertion of the plug part 21, thereby restricting the rotation of the sealing ring 30 by the plug part 21.
[0059] Furthermore, the clearance opening 31 penetrates the sealing ring 30, making it easy for the insertion part 21 to pass through the sealing ring 30. This prevents the insertion part 21 from disengaging from the clearance opening 31 during the axial movement of the sealing ring 30, which would cause the insertion part 21 to abut against the sealing ring 30 and cause the sealing ring 30 to jam, thereby ensuring the floating sealing effect of the sealing ring 30.
[0060] In one embodiment, the clearance opening 31 is provided on the outer ring edge of the sealing ring 30, and the clearance opening 31 is open on the side away from the center of the sealing ring 30.
[0061] Understandably, the clearance opening 31 is located on the outer edge of the sealing ring 30 to facilitate the processing of the stamped opening and improve the processing efficiency and quality of the clearance opening 31.
[0062] In one embodiment, the insertion part 21 includes a first side surface and a second side surface. The first side surface abuts against the circumferential side wall of the clearance opening 31 opposite to the first side surface, and the second side surface abuts against the circumferential side wall of the clearance opening 31 opposite to the second side surface.
[0063] It should be noted that when the sealing ring 30 rotates with the impeller, friction can easily occur between the sealing ring 30 and the impeller, causing mutual wear and affecting the seal.
[0064] Thus, when the insertion part 21 is inserted into the relief opening 31, the first side abuts against the circumferential sidewall of the relief opening 31 opposite to the first side, and the second side abuts against the circumferential sidewall of the relief opening 31 opposite to the second side.
[0065] Understandably, by using a side abutment, when the ring cover 20 is fixed to the pump body 10, the bent insertion part 21 can restrict the rotation of the sealing ring in the circumferential direction.
[0066] In one embodiment, the ring cover 20 is provided with a plurality of insertion parts 21, and the sealing ring 30 is provided with a plurality of clearance openings 31, and the insertion parts 21 and clearance openings 31 are correspondingly inserted into each other.
[0067] To improve the effect of the insertion part 21 in restricting the rotation of the sealing ring 30, multiple insertion parts 21 are provided, multiple clearance ports 31 are provided, and one insertion part 21 is inserted into one clearance port 31.
[0068] like Figure 3 and Figure 5 As shown, multiple insertion parts 21 are spaced apart on the inner ring of the ring cover 20, and multiple clearance openings 31 are spaced apart on the outer ring of the sealing ring 30.
[0069] It is understandable that by distributing multiple insertion parts 21 and multiple clearance openings 31 in the circumferential direction, the rotation restriction effect on the sealing ring 30 is further improved, the wear between the impeller and the sealing ring is reduced, the failure rate is reduced, the noise generated by the sealing ring rotating with the impeller is reduced, and the stability of pump operation is improved.
[0070] In one embodiment, a sealing ring groove 12 centered on the inlet 11 is provided on the side of the pump body 10, and the sealing ring groove 12 is connected to the inlet 11. A sealing ring 30 is disposed in the sealing ring groove 12, and a ring cover 20 is sealed in the sealing ring groove 12.
[0071] like Figure 6 and Figure 7 As shown, a stepped sealing ring groove 12 is formed inside the pump body 10, and the center of the sealing ring groove 12 is connected to the inlet 11.
[0072] It is understandable that a sealing ring 30 is provided in the sealing ring groove 12, and the sealing ring 30 is restricted in the sealing ring groove 12 by the ring cover 20. The impeller front cover 40 inserted into the inlet 11 passes through the sealing ring 30. The sealing effect is ensured by the floating seal of the sealing ring 30.
[0073] In one embodiment, a first gap is provided between the sealing ring 30 and the ring cover 20, and / or a second gap is provided between the sealing ring 30 and the axial sidewall of the sealing ring groove 12.
[0074] It is understandable that, such as Figure 8 By setting the first interval and / or the second interval, space is provided for the axial movement of the sealing ring 30, thereby ensuring the floating sealing effect of the sealing ring 30.
[0075] This utility model also proposes an end-suction pump, which includes a sealing ring structure 100. The specific structure of the sealing ring structure 100 is as described in the above embodiments. Since this end-suction pump adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.
[0076] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.
Claims
1. A sealing ring structure, characterized in that, include: A pump body, wherein the pump body is provided with an inlet and a connecting surface is formed on the pump body; A ring cover that clamps and restricts a sealing ring within the pump body; An impeller front cover, one end of which is inserted into the inlet, and a sealing ring is fitted onto the insertion end of the impeller front cover; The outer ring portion of the ring cover fits against the connecting surface and is connected to the pump body. The inner ring portion of the ring cover is bent toward the sealing ring to form an insertion part. The insertion part is inserted into the sealing ring to restrict the rotation of the sealing ring.
2. The sealing ring structure as described in claim 1, characterized in that, The extension direction of the plug portion is the same as the opening direction of the inlet.
3. The sealing ring structure as described in claim 1, characterized in that, The insertion part passes through the sealing ring.
4. The sealing ring structure as described in claim 1, characterized in that, The sealing ring is provided with a clearance opening, which penetrates the sealing ring. The clearance opening is directly opposite the insertion part, and the insertion part is inserted into the clearance opening.
5. The sealing ring structure as described in claim 4, characterized in that, The clearance opening is provided on the outer edge of the sealing ring, and the clearance opening is located on a side away from the center of the sealing ring.
6. The sealing ring structure as described in claim 4, characterized in that, The insertion part includes a first side and a second side. The first side abuts against the circumferential sidewall of the first side with the clearance opening, and the second side abuts against the circumferential sidewall of the second side with the clearance opening.
7. The sealing ring structure as described in claim 4, characterized in that, The ring cover is provided with a plurality of the aforementioned insertion parts, and the sealing ring is provided with a plurality of the aforementioned clearance openings, wherein the insertion parts are correspondingly inserted into the clearance openings.
8. The sealing ring structure as described in any one of claims 1 to 7, characterized in that, The pump body has a sealing ring groove centered on the inlet on its side, and the sealing ring groove is connected to the inlet. The sealing ring is disposed in the sealing ring groove, and the ring cover is sealed in the sealing ring groove.
9. The sealing ring structure as described in claim 8, characterized in that, A first gap is provided between the sealing ring and the ring cover, and / or a second gap is provided between the sealing ring and the axial sidewall of the sealing ring groove.
10. An end-suction pump, characterized in that, Includes the sealing ring structure as described in any one of claims 1 to 9.