Volute bushing hole sealing structure
By using the floating shaft and cylinder head drive O-ring in the vortex bushing hole sealing structure, the O-ring is easily damaged, and a better sealing effect and lower cost are achieved.
Patent Information
- Application Number
- CN202421845023.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-01
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-08-01
AI Technical Summary
In the prior art, during leakage testing, the O-ring is easily damaged by burrs inside the pin hole, resulting in poor sealing effect.
A sealing structure including a scroll shell, bushing, cylinder, cylinder head, O-ring, shaft sleeve, floating shaft, guide shaft and fastening bolt is adopted. The floating shaft is driven by the cylinder head to make the O-ring close to the inner wall of the bushing, thereby achieving sealing.
It effectively avoids the O-ring being scratched by the internal burrs of the pin hole, improves the sealing effect, and reduces costs, is convenient to load and unload and saves labor.
Smart Images
Figure CN222894636U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a sealing structure, and specifically discloses a volute bushing hole sealing structure. Background Art
[0002] The shape and structure of the volute vary. Some volutes 1 have pin holes 2.1 on the side of the bushing 2. Figure 1-4 As shown, when the volute 1 is subjected to a conventional leakage test, an O-ring 6 is installed on the end face of the cylinder head 4, and the cylinder 3 drives the cylinder head 4 to press the end face of the bushing 2, so that the pin hole 2.1 cannot be sealed. Figure 5-7 As shown, a sealing plug 5 is inserted into the bushing 2, and an O-ring 6 is provided on the outer circle of the sealing plug 5. The cylinder 3 drives the cylinder head 4 to press the sealing plug 5. The O-ring 6 may be scratched and damaged by the burrs inside the pin hole 2.1. Summary of the invention
[0003] The utility model aims to overcome the deficiencies in the prior art and to provide a volute bushing hole sealing structure with good sealing effect and in which the O-ring will not be scratched and damaged by the burrs inside the pin hole.
[0004] According to the technical solution provided by the utility model, the volute bushing hole sealing structure includes a volute, a bushing, a cylinder, a cylinder head, an O-ring, a sleeve, a floating shaft, a guide shaft and a fastening bolt;
[0005] A shaft sleeve bolt hole is provided on the shaft sleeve;
[0006] The floating shaft comprises a floating shaft body section and a floating shaft limiting section fixed to the right end of the floating shaft body section, the outer diameter of the floating shaft limiting section is larger than the outer diameter of the floating shaft body section, a guide shaft mounting section mounting hole is provided inside the left section of the floating shaft body section, a floating shaft body section bolt hole is provided on the floating shaft body section within the length range of the guide shaft mounting section mounting hole, and the floating shaft body section bolt hole is a waist-shaped hole;
[0007] The guide shaft comprises a guide shaft body section and a guide shaft mounting section fixed to the right end of the guide shaft body section, the outer diameter of the guide shaft body section is larger than the outer diameter of the guide shaft mounting section, and a guide shaft mounting section bolt hole is provided on the guide shaft mounting section;
[0008] A bushing facing the right side is fixed on the volute, a pin hole is provided on the bushing, a shaft sleeve is provided on the right side of the volute, a floating shaft body section of the floating shaft is slidably installed in the shaft hole of the shaft sleeve, the floating shaft limiting section is located on the right side of the shaft sleeve, the guide shaft mounting section of the guide shaft is installed in the guide shaft mounting section mounting hole, and fastening bolts are installed in the bolt holes of the shaft sleeve, the bolt holes of the floating shaft body section and the bolt holes of the guide shaft mounting section, and the fastening bolts fasten the shaft sleeve and the guide shaft mounting section together;
[0009] The guide shaft body section of the guide shaft is slidably mounted in the inner hole of the bushing on the left side of the corresponding pin hole, and a gap is set between the guide shaft body section and the inner hole of the bushing. The left section of the floating shaft body section is slidably mounted in the inner hole of the bushing on the left side of the corresponding pin hole, and a gap is set between the floating shaft body section and the inner hole of the bushing. An O-ring sleeved on the left end of the guide shaft installation section is provided between the right end face of the guide shaft body section and the left end face of the floating shaft body section, and the left end face of the sleeve contacts the right end face of the bushing.
[0010] A cylinder is provided on the right side of the sleeve, and a cylinder head is fixed on the end of the piston rod of the cylinder. The cylinder head is used to drive the floating shaft so that the left end face of the floating shaft body section squeezes the O-ring, causing the O-ring to deform, expand and fit tightly against the inner wall of the bushing.
[0011] Preferably, the shaft sleeve bolt hole is arranged perpendicular to the shaft sleeve axial hole.
[0012] Preferably, the floating shaft body section and the floating shaft limiting section are coaxially fixed.
[0013] Preferably, the guide shaft body section and the guide shaft mounting section are coaxially arranged, and the guide shaft mounting section bolt hole is vertically arranged to the guide shaft mounting section.
[0014] The O-ring is not easily damaged when the utility model is working, the manufacturing cost is low, and the utility model is convenient to assemble and disassemble and saves labor. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is the front view during a routine leak test.
[0016] Figure 2 This is a top view during a routine leak test.
[0017] Figure 3 yes Figure 2 AA section view.
[0018] Figure 4 yes Figure 3 Magnified view of part B.
[0019] Figure 5 It is a top view of the pin hole sealed with a sealing plug.
[0020] Figure 6 yes Figure 5 CC cross-sectional view.
[0021] Figure 7 yes Figure 6 Magnified view of part D in FIG.
[0022] Figure 8It is the front view of the utility model.
[0023] Fig. 9 It is a top view of the utility model.
[0024] Fig.10 yes Fig. 9 EE cross-sectional view.
[0025] Fig.11 yes Fig.10 Enlarged view of part F. DETAILED DESCRIPTION
[0026] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.
[0027] A volute bushing hole sealing structure, such as Figure 8-11 As shown, it includes a volute 1, a bushing 2, a cylinder 3, a cylinder head 4, an O-ring 6, a sleeve 7, a floating shaft 8, a guide shaft 9 and a fastening bolt 10;
[0028] A sleeve bolt hole 7.1 is provided on the sleeve 7;
[0029] The floating shaft 8 comprises a floating shaft body section 8.1 and a floating shaft limiting section 8.2 fixed to the right end of the floating shaft body section 8.1, the outer diameter of the floating shaft limiting section 8.2 is larger than the outer diameter of the floating shaft body section 8.1, a guide shaft mounting section mounting hole 8.11 is provided inside the left section of the floating shaft body section 8.1, a floating shaft body section bolt hole 8.12 is provided on the floating shaft body section 8.1 within the length range of the guide shaft mounting section mounting hole 8.11, the floating shaft body section bolt hole 8.12 is a waist-shaped hole, and the floating shaft body section bolt hole 8.12 is used to limit the travel of the floating shaft 8;
[0030] The guide shaft 9 comprises a guide shaft body section 9.1 and a guide shaft mounting section 9.2 fixed to the right end of the guide shaft body section 9.1. The outer diameter of the guide shaft body section 9.1 is larger than the outer diameter of the guide shaft mounting section 9.2. The guide shaft mounting section 9.2 is provided with a guide shaft mounting section bolt hole 9.21.
[0031] A bushing 2 facing the right side is fixed on the volute 1, a pin hole 2.1 is provided on the bushing 2, a shaft sleeve 7 is provided on the right side of the volute 1, a floating shaft body section 8.1 of the floating shaft 8 is slidably installed in the shaft hole of the shaft sleeve 7, a floating shaft limiting section 8.2 is located on the right side of the shaft sleeve 7, a guide shaft mounting section 9.2 of the guide shaft 9 is installed in the guide shaft mounting section mounting hole 8.11, and a fastening bolt 10 is installed in the shaft sleeve bolt hole 7.1, the floating shaft body section bolt hole 8.12 and the guide shaft mounting section bolt hole 9.21, and the fastening bolt 10 fastens the shaft sleeve 7 and the guide shaft mounting section 9.2 together;
[0032] The guide shaft body section 9.1 of the guide shaft 9 is slidably mounted in the inner hole of the bushing 2 on the left side of the corresponding pin hole 2.1, and a gap is set between the guide shaft body section 9.1 and the inner hole of the bushing 2. The left section of the floating shaft body section 8.1 is slidably mounted in the inner hole of the bushing 2 on the left side of the corresponding pin hole 2.1, and a gap is set between the floating shaft body section 8.1 and the inner hole of the bushing 2. An O-ring 6 is provided between the right end face of the guide shaft body section 9.1 and the left end face of the floating shaft body section 8.1, and is sleeved on the left end of the guide shaft installation section 9.2. The left end face of the shaft sleeve 7 contacts the right end face of the bushing 2.
[0033] A cylinder 3 is provided on the right side of the sleeve 7, and a cylinder head 4 is fixed to the end of the piston rod of the cylinder 3. The cylinder head 4 is used to drive the floating shaft 8 so that the left end face of the floating shaft body section 8.1 squeezes the O-ring 6, causing the O-ring 6 to deform, expand and fit tightly against the inner wall of the bushing 2.
[0034] The shaft sleeve bolt hole 7.1 is arranged perpendicularly to the shaft hole of the shaft sleeve 7.
[0035] The floating shaft body section 8.1 and the floating shaft limiting section 8.2 are coaxially fixed.
[0036] The guide shaft body section 9.1 is coaxially arranged with the guide shaft installation section 9.2, and the guide shaft installation section bolt hole 9.21 is vertically arranged with the guide shaft installation section 9.2.
[0037] During operation, the cylinder head 4 moves to the left through the force of the cylinder 3, pushing the floating shaft 8 to move to the left along the axial hole of the sleeve 7, and the left end face of the floating shaft body section 8.1 and the right end face of the guide shaft body section 9.1 cooperate to squeeze the O-ring 6, causing the O-ring 6 to deform and expand to fit tightly against the inner hole wall of the bushing 2, thereby achieving a sealing effect.
[0038] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to examples, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.
Claims
1. A volute bushing hole sealing structure, characterized in that: It comprises a volute (1), a bushing (2), a cylinder (3), a cylinder head (4), an O-ring (6), a sleeve (7), a floating shaft (8), a guide shaft (9) and fastening bolts (10); A shaft sleeve bolt hole (7.1) is provided on the shaft sleeve (7); The floating shaft (8) comprises a floating shaft body section (8.1) and a floating shaft limiting section (8.2) fixed to the right end of the floating shaft body section (8.1); the outer diameter of the floating shaft limiting section (8.2) is larger than the outer diameter of the floating shaft body section (8.1); a guide shaft mounting section mounting hole (8.11) is provided inside the left section of the floating shaft body section (8.1); a floating shaft body section bolt hole (8.12) is provided on the floating shaft body section (8.1) within the length range of the guide shaft mounting section mounting hole (8.11); and the floating shaft body section bolt hole (8.12) is a waist-shaped hole; The guide shaft (9) comprises a guide shaft body section (9.1) and a guide shaft mounting section (9.2) fixed to the right end of the guide shaft body section (9.1); the outer diameter of the guide shaft body section (9.1) is larger than the outer diameter of the guide shaft mounting section (9.2); and a guide shaft mounting section bolt hole (9.21) is provided on the guide shaft mounting section (9.2); A bushing (2) facing rightward is fixed on the volute (1), a pin hole (2.1) is provided on the bushing (2), a shaft sleeve (7) is provided on the right side of the volute (1), a floating shaft body section (8.1) of the floating shaft (8) is slidably mounted in the shaft hole of the shaft sleeve (7), a floating shaft limiting section (8.2) is located on the right side of the shaft sleeve (7), a guide shaft mounting section (9.2) of the guide shaft (9) is mounted in the guide shaft mounting section mounting hole (8.11), a fastening bolt (10) is installed in the shaft sleeve bolt hole (7.1), the floating shaft body section bolt hole (8.12) and the guide shaft mounting section bolt hole (9.21), and the fastening bolt (10) fastens the shaft sleeve (7) and the guide shaft mounting section (9.2) together; The guide shaft body section (9.1) of the guide shaft (9) is slidably mounted in the inner hole of the bushing (2) on the left side of the corresponding pin hole (2.1), and a gap is set between the guide shaft body section (9.1) and the inner hole of the bushing (2); the left section of the floating shaft body section (8.1) is slidably mounted in the inner hole of the bushing (2) on the left side of the corresponding pin hole (2.1), and a gap is set between the floating shaft body section (8.1) and the inner hole of the bushing (2); an O-ring (6) sleeved on the left end of the guide shaft installation section (9.2) is provided between the right end surface of the guide shaft body section (9.1) and the left end surface of the floating shaft body section (8.1), and the left end surface of the shaft sleeve (7) contacts the right end surface of the bushing (2); A cylinder (3) is provided on the right side of the shaft sleeve (7), and a cylinder head (4) is fixed to the end of the piston rod of the cylinder (3). The cylinder head (4) is used to drive the floating shaft (8) so that the left end surface of the floating shaft body section (8.1) squeezes the O-ring (6), causing the O-ring (6) to deform, expand and fit tightly against the inner wall of the bushing (2).
2. The volute bushing hole sealing structure according to claim 1, characterized in that: The shaft sleeve bolt hole (7.1) is arranged perpendicularly to the shaft hole of the shaft sleeve (7).
3. The volute bushing hole sealing structure according to claim 1, characterized in that: The floating shaft body section (8.1) and the floating shaft limiting section (8.2) are coaxially fixed.
4. The volute bushing hole sealing structure according to claim 1, characterized in that: The guide shaft body section (9.1) and the guide shaft installation section (9.2) are coaxially arranged, and the guide shaft installation section bolt hole (9.21) and the guide shaft installation section (9.2) are vertically arranged.