Self-tightening anti-loose packing seal box

Abstract

The utility model relates to the technical field of packing sealing devices, and discloses a self-tightening type anti-loose packing sealing box which comprises a shaft and a packing box body arranged on the shaft in a sleeved mode, and the packing box body comprises a first box body and a second box body which are sequentially arranged from bottom to top. A pressing ring is fixedly installed at the bottom of the second box body, a cavity formed among the bottom of the pressing ring, the outer wall of the shaft and the inner wall of the first box body is filled with a filler set, a through hole is formed in the second box body, a threaded hole is formed in the first box body, and a bolt is placed in the through hole. According to the self-tightening type anti-loose packing seal box, the fixing block is arranged to be matched with the T-shaped rod and the torsional spring, the rotating direction of the bolt can be locked, the bolt can only rotate in one direction, the situation that the bolt is loosened due to equipment vibration is avoided, and the stability of the bolt is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of packing sealing devices, in particular to a self-tightening anti-loosening packing sealing box. Background Art

[0002] A packing seal is a dynamic sealing device that generates a compression 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".

[0003] The packing box needs to adjust the compression of the packing regularly to avoid affecting the sealing effect. However, the equipment will transmit large vibrations to the packing box during operation, which will cause the connecting bolts to loosen over time, affecting the compression effect of the packing and thus the sealing effect of the packing. Utility Model Content

[0004] The utility model aims to provide a self-tightening anti-loosening packing sealing box to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a self-tightening anti-loosening packing sealing box, comprising a shaft and a packing box body sleeved on the shaft, the packing box body comprising a first box body and a second box body arranged in sequence from bottom to top, a pressure ring is fixedly installed at the bottom of the second box body, and a packing group is filled inside the cavity formed between the bottom surface of the pressure ring, the outer wall of the shaft and the inner wall of the first box body, a through hole is opened on the second box body, a threaded hole is opened on the first box body, a bolt is placed inside the through hole, and the bolt is threadedly connected with the threaded hole, and a locking mechanism for preventing the bolt from loosening is provided on the second box body, and the rotation direction of the bolt can be locked by setting the locking mechanism to prevent the bolt from loosening due to equipment vibration, and the locking mechanism comprises:

[0006] A fixed block, which is fixedly mounted on the top of the second box body, and the rotation direction of the T-bar can be limited by setting the fixed block;

[0007] A T-shaped rod, one end of which is hinged on the inner wall of the fixed block, and the other end of which is fitted on the outer wall of the bolt. A torsion spring is provided at the hinge between the T-shaped rod and the fixed block, and the side wall of the T-shaped rod is fitted on the inner wall of the fixed block. The torsion spring can be provided to drive the T-shaped rod to rotate and reset.

[0008] Preferably, a fixing mechanism for improving the stability of the T-bar is provided on the fixing block, and the fixing mechanism includes an insertion rod, the insertion rod is slidably connected to the inner wall of the fixing block, and the insertion rod passes through the fixing block.

[0009] Preferably, a limiting hole is provided on the T-bar.

[0010] Preferably, one end of the insertion rod extends to the inside of the limiting hole, and the other end of the insertion rod is fixedly mounted with a limiting block, and the T-bar can be limited by the insertion rod cooperating with the limiting hole.

[0011] Preferably, a spring is sleeved on the outer wall of the insertion rod.

[0012] Preferably, one end of the spring is fixedly mounted on the bottom of the limiting block, and the other end of the spring is fixedly mounted on the outer wall of the fixing block.

[0013] Compared with the prior art, the utility model provides a self-tightening anti-loosening packing sealing box, which has the following beneficial effects:

[0014] 1. The self-tightening anti-loosening packing sealing box can lock the rotation direction of the bolt by setting a fixed block, a T-bar and a torsion spring, so that the bolt can only rotate in one direction, avoiding the loosening of the bolt due to equipment vibration and improving the stability of the bolt.

[0015] 2. The self-tightening anti-loosening packing sealing box can push the insertion rod into the interior of the limiting hole through the limiting block and the spring, and the T-bar can be limited by the insertion rod and the limiting hole, so that the T-bar cannot rotate, so that the T-bar can be firmly against the outer wall of the bolt, thereby further improving the stability of the bolt. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the overall explosion structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the overall cross-sectional structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the overall top view structure of the utility model;

[0020] Figure 5 For this utility model Figure 1 A schematic diagram of the enlarged structure at point A;

[0021] Figure 6 For this utility model Figure 4 Schematic diagram of the enlarged structure at B.

[0022] In the figure: 1, shaft; 11, stuffing box body; 22, box body No. 1; 33, box body No. 2; 4, pressure ring; 5, cavity; 51, stuffing group; 6, through hole; 7, threaded hole; 8, bolt; 9, locking mechanism; 91, fixing block; 92, T-bar; 93, torsion spring; 10, fixing mechanism; 101, plug rod; 102, limit hole; 103, limit block; 104, spring. DETAILED DESCRIPTION

[0023] like Figure 1-Figure 6 As shown, the utility model provides a technical solution: a self-tightening anti-loosening packing sealing box, comprising a shaft 1 and a packing box body 11 sleeved on the shaft 1, the packing box body 11 comprises a No. 1 box body 22 and a No. 2 box body 33 arranged in sequence from bottom to top, a pressure ring 4 is fixedly installed on the bottom of the No. 2 box body 33, a cavity 5 formed between the bottom of the pressure ring 4 and the outer wall of the shaft 1 and the inner wall of the No. 1 box body 22 is filled with a packing group 51, and the packing group 51 is specifically asbestos packing, a through hole 6 is opened on the No. 2 box body 33, a threaded hole 7 is opened on the No. 1 box body 22, a bolt 8 is placed inside the through hole 6, and the bolt 8 is threadedly connected to the threaded hole 7, and a locking mechanism 9 for preventing the bolt 8 from loosening is provided on the No. 2 box body 33, and the locking mechanism 9 can be set to lock the rotation direction of the bolt 8 to prevent the bolt 8 from loosening due to equipment vibration.

[0024] The locking mechanism 9 comprises a fixing block 91, a T-bar 92 and a torsion spring 93; the fixing block 91 is fixedly mounted on the top of the second box body 33, one end of the T-bar 92 is hinged on the inner wall of the fixing block 91, and the other end of the T-bar 92 is fitted on the outer wall of the bolt 8, and a torsion spring 93 is arranged at the hinge between the T-bar 92 and the fixing block 91, and the elasticity of the torsion spring 93 can drive the T-bar 92 to rotate and reset, so that the side wall of the T-bar 92 is fitted with the inner wall of the fixing block 91, and the side wall of the T-bar 92 is fitted with the inner wall of the fixing block 91, and the outer wall of one side of the T-bar 92 is restricted by the fixing block 91, so the T-bar 92 can only rotate in one direction, so that the bolt 8 can be restricted by the T-bar 92, so that the bolt 8 can only rotate in one direction, thereby avoiding the situation where the bolt 8 becomes loose due to equipment vibration.

[0025] The fixing block 91 is provided with a fixing mechanism 10 for improving the stability of the T-shaped rod 92. By providing the fixing mechanism 10, the T-shaped rod 92 can be fixed, thereby further improving the stability of the bolt 8. The fixing mechanism 10 includes an insert rod 101, a limiting hole 102, a limiting block 103, and a spring 104; the insert rod 101 is slidably connected to the inner wall of the fixing block 91, and the insert rod 101 passes through the fixing block 91, and the T-shaped rod 92 is provided with a limiting hole 102, one end of the insert rod 101 extends to the inside of the limiting hole 102, and the other end of the insert rod 101 is fixedly installed with the limiting block 10 3. The T-bar 92 can be limited by the insertion rod 101 and the limiting hole 102, so that the T-bar 92 cannot rotate, so that the T-bar 92 can be firmly against the outer wall of the bolt 8, thereby further improving the stability of the bolt 8. The outer wall of the insertion rod 101 is sleeved with a spring 104, one end of the spring 104 is fixedly installed on the bottom of the limiting block 103, and the other end of the spring 104 is fixedly installed on the outer wall of the fixing block 91. The insertion rod 101 is pulled by the limiting block 102 to disengage the insertion rod 101 from the limiting hole 103 and stretch the spring 104. At this time, the bolt 8 can be rotated.

[0026] Working principle: the insertion rod 101 is pulled by the limit block 102 to make the insertion rod 101 disengage from the limit hole 103 and stretch the spring 104. At this time, the bolt 8 is rotated forward to move the bolt 8 to the bottom of the threaded hole 7. The bolt 8 will squeeze the T-bar 92 during the rotation, so that the T-bar 92 rotates to the outside of the fixing block 91 and compresses the torsion spring 93. When the bolt 8 is separated from the squeezing of the T-bar 92, the elasticity of the torsion spring 93 can drive the T-bar 92 to rotate and reset, so that the side wall of the T-bar 92 fits the inner wall of the fixing block 91. When the bolt 8 is reversed to move the bolt 8 to the outside of the threaded hole 7, the bolt 8 will be supported by the T-bar 92, and the side wall of the T-bar 92 will be supported by the fixing block 91. At this time, the bolt 8 can be limited by the action of the T-bar 92 and the fixing block 91, so that the bolt 8 cannot rotate in the opposite direction, thereby avoiding the loosening of the bolt 8 due to equipment vibration and improving the stability of the bolt 8.

[0027] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A self-tightening anti-loosening stuffing sealing box, comprising a shaft (1) and a stuffing box body (11) sleeved on the shaft (1), characterized in that: The stuffing box body (11) comprises a first box body (22) and a second box body (33) which are arranged in sequence from bottom to top. A pressure ring (4) is fixedly installed at the bottom of the second box body (33). A cavity (5) formed between the bottom of the pressure ring (4), the outer wall of the shaft (1) and the inner wall of the first box body (22) is filled with a stuffing group (51). A through hole (6) is provided on the second box body (33). A threaded hole (7) is provided on the first box body (22). A bolt (8) is placed inside the through hole (6). The bolt (8) is threadedly connected to the threaded hole (7). A locking mechanism (9) for preventing the bolt (8) from loosening is provided on the second box body (33). The locking mechanism (9) comprises: A fixed block (91), wherein the fixed block (91) is fixedly mounted on the top of the second box body (33); A T-shaped rod (92), one end of the T-shaped rod (92) is hinged to the inner wall of the fixing block (91), the other end of the T-shaped rod (92) is in contact with the outer wall of the bolt (8), and a torsion spring (93) is provided at the hinge between the T-shaped rod (92) and the fixing block (91), and the side wall of the T-shaped rod (92) is in contact with the inner wall of the fixing block (91).

2. A self-tightening anti-loosening packing sealing box according to claim 1, characterized in that: The fixing block (91) is provided with a fixing mechanism (10) for improving the stability of the T-shaped rod (92), and the fixing mechanism (10) comprises an insertion rod (101), the insertion rod (101) is slidably connected to the inner wall of the fixing block (91), and the insertion rod (101) passes through the fixing block (91).

3. A self-tightening anti-loosening packing sealing box according to claim 1, characterized in that: The T-shaped rod (92) is provided with a limiting hole (102).

4. A self-tightening anti-loosening packing sealing box according to claim 2, characterized in that: One end of the insertion rod (101) extends to the interior of the limiting hole (102), and the other end of the insertion rod (101) is fixedly mounted with a limiting block (103).

5. A self-tightening anti-loosening packing sealing box according to claim 4, characterized in that: The outer wall of the insertion rod (101) is sleeved with a spring (104).

6. A self-tightening anti-loosening packing sealing box according to claim 5, characterized in that: One end of the spring (104) is fixedly mounted on the bottom of the limiting block (103), and the other end of the spring (104) is fixedly mounted on the outer wall of the fixing block (91).

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