Packing seal assembly structure

Abstract

The utility model relates to the field of packing sealing, in particular to a packing sealing assembly structure which comprises a packing box body, a front connecting end plate is fixedly installed on one side of the outer portion of the packing box body, and a rear connecting end plate is fixedly installed on the other side of the outer portion of the packing box body. Through the arrangement of the rear connecting shaft sleeve, the positioning clamping block, the first anti-falling hanging plate, the outer fixing sleeve, the first sealing ring, the front connecting shaft sleeve and the packing ring, when the device is installed on a machine to be used as a packing sealing assembly, the front connecting shaft sleeve at the front end and the packing ring are sealed with a packing box body; a positioning clamping groove and a positioning clamping block facilitate butt joint installation of the rear connecting shaft sleeve in the packing box body, the stable installation position of the rear connecting shaft sleeve is guaranteed, then the stability of connection between the rear connecting end plate and the outer fixing sleeve is enhanced through a fastening bolt, and a first sealing ring in the outer fixing sleeve is matched. Therefore, the sealing performance of the contact position of the rear connecting shaft sleeve and the packing box body is further enhanced.

Description

Technical Field

[0001] The utility model relates to the field of packing seals, in particular to a packing seal component structure. Background Art

[0002] A packing seal is a dynamic sealing device that generates a compressive force between the packing and the rotating and fixed parts through pre-tightening or the self-tightening effect of the medium pressure. It is also called a "stuffing box seal". There are many structural forms, mainly consisting of packing, a stuffing box and packing fixings. Commonly used packing materials include asbestos fabric, carbon fiber, rubber, flexible graphite and engineering plastics, which are prefabricated into rings or strips. Some need to be pre-impregnated with fillers with good lubricity, and adopt a multi-ring or spiral multi-layer structure. The stuffing box is used to accommodate the packing. The packing fixings include a gland, bolts and springs, which are used to pre-tighten the packing and prevent the medium from leaking out during operation. The spring can play a compensating role.

[0003] After searching, a packing seal structure with the publication number CN215410184U specifically discloses a packing seal structure, which includes: a shaft end support seat; one end of the shaft end support seat is arranged on the pump body; the pump body has a packing cavity 1; the rotating shaft passes through the packing cavity 1 and can be rotatably arranged on the other end of the shaft end support seat; the material sealing ring is filled in the packing cavity 1; the packing gland 1 can move axially relative to the rotating shaft to squeeze the material sealing ring; the grease sealing ring is filled between the rotating shaft and the packing gland 1; the packing gland 2 is set on the rotating shaft; the packing gland 2 can move axially relative to the rotating shaft to squeeze the grease sealing ring; the nitrogen sealing ring is filled between the rotating shaft and the packing gland 2; the packing gland 3 can move axially relative to the rotating shaft to squeeze the nitrogen sealing ring. The utility model can avoid dry friction between the packing and the rotating shaft, prolong the stable operation time, prevent the leakage of the medium, and save maintenance costs.

[0004] The above patent only achieves the purpose of avoiding dry friction between the packing and the rotating shaft, extending the stable operation time, preventing leakage of the medium and saving maintenance costs through the shaft end support seat, pump body, packing chamber and packing gland. However, during use, the packing seal assembly structure only relies on the friction between the packing and the stuffing box itself to achieve the sealing effect. When encountering different liquids or gases inside, the single sealing structure cannot fully satisfy the sealing effect of the assembly, and it is not convenient to install the packing seal assembly structure on other machines for coordinated use, which will cause the risk of leakage.

[0005] Therefore, it is necessary to invent a packing seal assembly structure to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a packing seal component structure, which realizes a double sealing effect through a rear connecting sleeve, a positioning block, a first anti-detachment hanging plate, an external fixing sleeve, a first sealing ring, a front connecting sleeve and a packing ring, so as to ensure that when the device is used in combination with other machines, it has a strong sealing effect when facing liquids or gases of different properties, and meets the sealing ability of the device to reduce the risk of leakage, so as to solve the problem that the packing seal component structure in the prior art only relies on the friction between the packing and the stuffing box itself to achieve the sealing effect during use, and when encountering different liquids or gases inside, the single sealing structure cannot fully satisfy the sealing effect of the component, and it is not convenient for the packing seal component structure to be installed on other machines for coordinated use, and there will be a risk of leakage.

[0007] In order to achieve the above-mentioned objectives, the utility model provides the following technical solutions: a packing sealing assembly structure, including a packing box body, a front connecting end plate is fixedly installed on one side of the outside of the packing box body, and a rear connecting end plate is fixedly installed on the other side of the outside of the packing box body, a positioning mounting hole is opened on the outside of the front connecting end plate, a rear connecting shaft sleeve is movably connected to the inside of the packing box body, a positioning slot is opened on the inside of the packing box body, a positioning block is movably connected to the inside of the positioning slot, a first anti-stripping hanging plate is fixedly installed on one end of the positioning block, a fastening bolt passes through one side of the rear connecting end plate, one end of the fastening bolt is movably connected to an external fixing sleeve, a sealing groove is opened on the inside of the external fixing sleeve, a first sealing ring is arranged inside the sealing groove, a front connecting sleeve is arranged on one side of the rear connecting shaft sleeve, a second anti-stripping hanging plate is fixedly installed on one end of the front connecting shaft sleeve, and a packing ring is arranged on one side of the second anti-stripping hanging plate.

[0008] Preferably, a positioning block fixedly installed at the bottom of the first anti-drop hanging plate is engaged with a positioning slot provided inside the stuffing box, and the positioning block and the positioning slot are used in conjunction with each other.

[0009] Preferably, the outer fixing sleeve is threadedly connected to the rear connecting end plate, and the outer dimension of the first sealing ring is consistent with the inner dimension of the sealing groove.

[0010] Preferably, the number of the packing rings is set to seven, and the seven packing rings are distributed at equal intervals on the front connecting sleeve.

[0011] Preferably, a fixing block is fixedly mounted on the outside of the front connecting sleeve, and an external connecting sleeve rod is movably connected to the outside of the fixing block.

[0012] Preferably, a positioning sleeve is fixedly installed on the outside of the outer connecting sleeve rod, a positioning bolt passes through one side of the positioning sleeve, and a second sealing ring is arranged inside the positioning sleeve.

[0013] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0014] 1. Through the arrangement of the rear connecting sleeve, the positioning block, the first anti-drop plate, the external fixing sleeve, the first sealing ring, the front connecting sleeve and the packing ring, when the device is installed on a machine as a packing sealing assembly, in addition to the sealing between the front connecting sleeve and the packing ring and the packing box, the positioning slot and the positioning block first facilitate the docking installation of the rear connecting sleeve in the packing box to ensure its stable installation position, and then the stability of the connection between the rear connecting end plate and the external fixing sleeve is strengthened by tightening the bolts, and the first sealing ring inside the external fixing sleeve is cooperated, so as to further strengthen the sealing of the contact position between the rear connecting sleeve and the packing box. Such a double sealing effect ensures that when the device is used in combination with other machines, it has a strong sealing effect when facing liquids or gases of different properties, and meets the sealing capacity of the device to reduce the risk of leakage;

[0015] 2. Through the arrangement of the front connecting sleeve, the fixing block, the outer connecting sleeve rod, the positioning sleeve, the positioning bolt and the second sealing ring, when the device is installed on a machine as a packing seal assembly, the front connecting sleeve and the outer connecting sleeve rod are stably installed through the fixing block after the rear connecting sleeve is stably installed, thereby enhancing the stability of the connection between the stuffing box and the front end of the external machine. At the same time, the second sealing ring is still arranged inside the positioning sleeve, and the double sealing characteristics are also met at the front end of the stuffing box. The overall structure of the positioning bolt is simple, which is not only convenient for operation when docking and installing with other machines, but also convenient for maintenance personnel to replace and repair in time if a fault occurs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the rear connecting sleeve structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the external fixing sleeve of the utility model;

[0020] Figure 4 This is a schematic diagram of the packing ring structure of the utility model;

[0021] Figure 5 It is a schematic diagram of the structure of the external connecting sleeve rod of the utility model.

[0022] Description of reference numerals:

[0023] 1. Stuffing box; 2. Front connecting end plate; 3. Rear connecting end plate; 4. Positioning mounting hole; 5. Rear connecting sleeve; 6. Positioning slot; 7. Positioning block; 8. First anti-drop plate; 9. Fastening bolt; 10. External fixing sleeve; 11. Sealing groove; 12. First sealing ring; 13. Front connecting sleeve; 14. Second anti-drop plate; 15. Stuffing ring; 16. Fixing block; 17. External connecting sleeve rod; 18. Positioning sleeve; 19. Positioning bolt; 20. Second sealing ring. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0025] The utility model provides Figure 1-5 The packing seal assembly structure shown comprises a packing box 1, a front connecting end plate 2 is fixedly installed on one side of the outside of the packing box 1, a rear connecting end plate 3 is fixedly installed on the other side of the outside of the packing box 1, a positioning installation hole 4 is provided on the outside of the front connecting end plate 2, a rear connecting shaft sleeve 5 is movably connected to the inside of the packing box 1, a positioning slot 6 is provided on the inside of the packing box 1, a positioning block 7 is movably connected to the inside of the positioning slot 6, a first anti-detachment hanging plate 8 is fixedly installed on one end of the positioning block 7, a fastening bolt 9 passes through one side of the rear connecting end plate 3, an outer fixing sleeve 10 is movably connected to one end of the fastening bolt 9, a sealing groove 11 is provided on the inside of the outer fixing sleeve 10, a first sealing ring 12 is arranged inside the sealing groove 11, A front connecting sleeve 13 is provided on one side of the rear connecting sleeve 5, and a second anti-detachment hanging plate 14 is fixedly installed on one end of the front connecting sleeve 13, and a packing ring 15 is provided on one side of the second anti-detachment hanging plate 14. When the device is installed on a machine and used as a packing sealing component, in addition to the sealing between the front end front connecting sleeve 13 and the packing ring 15 itself and the stuffing box 1, the positioning groove 6 and the positioning block 7 first facilitate the docking installation of the rear connecting sleeve 5 in the stuffing box 1 to ensure its stable installation position, and then the stability of the connection between the rear connecting end plate 3 and the external fixed sleeve 10 is strengthened by tightening the bolts 9, and the first sealing ring 12 inside the external fixed sleeve 10 is cooperated, thereby further strengthening the sealing of the contact position between the rear connecting sleeve 5 and the stuffing box 1.

[0026] like Figure 1 , Figure 2 and Figure 3As shown, the positioning block 7 fixedly installed at the bottom of the first anti-detachment hanging plate 8 is engaged with the positioning slot 6 opened inside the stuffing box 1, and the positioning block 7 is used in conjunction with the positioning slot 6. The positioning slot 6 and the positioning block 7 first facilitate the docking installation of the rear connecting sleeve 5 in the stuffing box 1, and the external fixed sleeve 10 is threadedly connected to the rear connecting end plate 3. The external size of the first sealing ring 12 is consistent with the internal size of the sealing groove 11, which cooperates with the first sealing ring 12 inside the external fixed sleeve 10, thereby further strengthening the sealing of the contact position between the rear connecting sleeve 5 and the stuffing box 1.

[0027] like Figure 1 , Figure 4 and Figure 5 As shown, the number of packing rings 15 is set to seven, and the seven packing rings 15 are evenly spaced on the front connecting sleeve 13. The multiple packing rings 15 strengthen the friction with the inner wall of the packing box 1, and reduce the risk of leakage at the contact position between the front connecting sleeve 13 and the packing box 1. The front connecting sleeve 13 is fixedly installed with a fixing block 16 on the outside, and the fixing block 16 is movably connected with an external connecting sleeve rod 17 on the outside. The front connecting sleeve 13 and the external connecting sleeve rod 17 are stably installed through the fixing block 16 to strengthen the stability of the connection between the packing box 1 and the front end of the external mechanical machine. The external connecting sleeve rod 17 is fixedly installed with a positioning sleeve 18 on the outside, and a positioning bolt 19 passes through one side of the positioning sleeve 18. A second sealing ring 20 is arranged inside the positioning sleeve 18, and the second sealing ring 20 is still arranged inside the positioning sleeve 18. Similarly, the double sealing characteristics are also met at the front end of the packing box 1.

[0028] The working principle of the utility model is as follows: first, the device is connected and installed with the external machinery through the positioning and installation holes 4 on the front connecting end plate 2 and the rear connecting end plate 3, and then the positioning block 7 on the first anti-detachment hanging plate 8 is controlled by the rear connecting shaft sleeve 5 to dock and install with the positioning groove 6 in the stuffing box body 1, and the position of the rear connecting shaft sleeve 5 in the stuffing box body 1 is fixed, and then the fastening bolt 9 is twisted to strengthen the stability of the connection between the rear connecting end plate 3 and the external fixing sleeve 10, and the rear connecting shaft sleeve 5 is connected and installed with one end of the external machinery, and then the fixing block 16 is used to stably install the external connecting sleeve rod 17 on the outside of the front connecting shaft sleeve 13, and the positioning bolt 19 is twisted to strengthen the stability of the connection between the stuffing box body 1 and the front end of the external machinery. After the installation is completed, it can be used normally with the external machinery to carry specific liquids and gases for circulation, and the component is sealed with the external machinery for use In addition to the sealing of the packing ring 15 after friction with the inner wall of the packing box 1, the second sealing ring 20 is still arranged in the positioning sleeve 18 outside the external connecting sleeve rod 17, and then the first sealing ring 12 is arranged inside the external fixing sleeve 10, so that the sealing of the contact position between the rear connecting sleeve 5 and the front connecting sleeve 13 and the packing box 1 is further strengthened, and the double sealing effect ensures that when the device is used in combination with other machines, it has a strong sealing effect when facing liquids or gases of different properties, meets the sealing capacity of the device and reduces the risk of leakage. Finally, after completing the installation and sealing use of all the packing seal components according to the above operations, regular maintenance is carried out. If a fault occurs, the component can be repaired by removing the fastening bolts 9 and the positioning bolts 19. In this way, the use process of the packing seal component structure is completed.

[0029] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A packing seal assembly structure, comprising a packing box (1), characterized in that: A front connecting end plate (2) is fixedly mounted on one side of the outside of the stuffing box (1), a rear connecting end plate (3) is fixedly mounted on the other side of the outside of the stuffing box (1), a positioning mounting hole (4) is provided on the outside of the front connecting end plate (2), a rear connecting shaft sleeve (5) is movably connected to the inside of the stuffing box (1), a positioning slot (6) is provided on the inside of the stuffing box (1), a positioning block (7) is movably connected to the inside of the positioning slot (6), and a first anti-drop hanging plate (8) is fixedly mounted on one end of the positioning block (7). A fastening bolt (9) passes through one side of the rear connecting end plate (3), one end of the fastening bolt (9) is movably connected to an external fixing sleeve (10), a sealing groove (11) is provided inside the external fixing sleeve (10), a first sealing ring (12) is provided inside the sealing groove (11), a front connecting sleeve (13) is provided on one side of the rear connecting sleeve (5), a second anti-detachment hanging plate (14) is fixedly installed on one end of the front connecting sleeve (13), and a packing ring (15) is provided on one side of the second anti-detachment hanging plate (14).

2. A packing seal assembly structure according to claim 1, characterized in that: A positioning block (7) fixedly mounted on the bottom of the first anti-drop hanging plate (8) is engaged with a positioning slot (6) provided inside the stuffing box (1), and the positioning block (7) and the positioning slot (6) are used in conjunction with each other.

3. A packing seal assembly structure according to claim 1, characterized in that: The outer fixing sleeve (10) is threadedly connected to the rear connecting end plate (3), and the outer dimensions of the first sealing ring (12) match the inner dimensions of the sealing groove (11).

4. A packing seal assembly structure according to claim 1, characterized in that: The number of the packing rings (15) is set to seven, and the seven packing rings (15) are distributed at equal intervals on the front connecting shaft sleeve (13).

5. The packing seal assembly structure according to claim 1, characterized in that: A fixing block (16) is fixedly mounted on the outside of the front connecting shaft sleeve (13), and an external connecting sleeve rod (17) is movably connected to the outside of the fixing block (16).

6. A packing seal assembly structure according to claim 5, characterized in that: A positioning sleeve (18) is fixedly mounted on the outside of the external connection sleeve rod (17), a positioning bolt (19) penetrates one side of the positioning sleeve (18), and a second sealing ring (20) is arranged inside the positioning sleeve (18).

Images