Packing sealing device

Abstract

The utility model relates to a packing sealing device. The top end of a sealing sleeve is provided with sliding grooves used for positioning and installing a first packing sealing assembly, a second packing sealing assembly and a third packing sealing assembly. A second packing sealing assembly used for being matched with the first packing sealing assembly to seal the shaft body is arranged at the top end of the first packing sealing assembly, and a third packing sealing assembly is arranged at the top end of the second packing sealing assembly. The first packing sealing assembly, the second packing sealing assembly and the third packing sealing assembly are sequentially placed into an annular groove in the sealing sleeve, and then the stirring shaft is inserted into the sealing sleeve, so that the cover end controls the pressing end to move towards the annular groove; meanwhile, a bolt penetrates through a first locking hole and a second locking hole to enable a pressing end to control a third packing ring to move downwards towards the bottom end of an annular groove, a second trapezoidal block is clamped into a first trapezoidal groove, meanwhile, the first trapezoidal block can be clamped into the first trapezoidal groove, and sealing installation of the stirring shaft can be completed.

Description

Technical Field

[0001] This utility model relates to the technical field, and in particular to a packing sealing device. Background Technology

[0002] A packing seal is a dynamic sealing device that generates a clamping force between the packing and rotating or stationary parts through pre-tightening or self-tightening by the medium pressure. In the process of material mixing and reaction in a reactor, stirring is required by the rotation of an agitator and a stainless steel shaft. To ensure the reactor's sealing during the reaction, a sealing device fitted around the outside of the agitator shaft is usually installed at the reactor opening. For example, the packing seal unit and packing seal device described in Chinese Patent Application No. CN202022633022.5 show that the inner ring of the packing seal unit forms a first axial hole for the main shaft to pass through. The packing seal unit includes a top packing layer, a middle packing layer, and a bottom packing layer stacked sequentially from top to bottom. The top packing layer includes at least one first braided packing, and the bottom packing layer includes at least one second braided packing. The first and second braided packings are respectively provided with slits that allow radial loading and unloading of the first and second braided packings from the main shaft. These slits are inclined relative to the cross-section of the main shaft.

[0003] However, when using the cooling jacket and cover end to seal the stirring shaft, the lack of a guiding device for the V-shaped packing makes it easy for the V-shaped packing to overturn during the feeding process when it is put into the annular cavity, which is not conducive to sealing the stirring shaft. Utility Model Content

[0004] To address the problem mentioned in the background art, where the lack of a guiding device for the V-shaped packing leads to its tendency to overturn during the feeding process and hinders the sealing of the stirring shaft, the present invention provides the following technical solution:

[0005] A packing sealing device includes a sealing sleeve, a packing sealing unit disposed inside the sealing sleeve, and a fixing device disposed at the top end of the sealing sleeve for cooperating with the sealing sleeve to press and seal the packing sealing unit.

[0006] The packing sealing unit includes a packing sealing component one disposed within a sealing sleeve. The top end of the packing sealing component one is provided with a packing sealing component two for cooperating with the packing sealing component one to seal the shaft. There are several packing sealing components two. The top end of the packing sealing component two is provided with a packing sealing component three.

[0007] Furthermore, the first packing sealing assembly includes a packing ring disposed at the bottom end of the sealing sleeve. The top end of the packing ring is provided with a trapezoidal groove for fixing the second packing sealing assembly. Two sliders are fixedly installed on the outer side of the packing ring.

[0008] Furthermore, the second packing seal assembly includes a trapezoidal block inserted into the trapezoidal groove, a packing ring is fixedly installed at the top of the trapezoidal block, the top of the packing ring is provided with a trapezoidal groove for fixing the third packing seal assembly, and two sliders are fixedly installed on the outer side of the packing ring.

[0009] Furthermore, the packing sealing assembly three includes a trapezoidal block two inserted into the trapezoidal groove two, a packing ring three fixedly installed at the top of the trapezoidal block two, and two sliders three fixedly installed on the outer side of the packing ring three.

[0010] This utility model also includes a packing sealing device based on the above-mentioned packing sealing unit. The inside of the sealing sleeve is provided with an annular groove for placing the packing sealing unit. The top of the sealing sleeve is provided with a sliding groove for positioning and installing the first packing sealing component, the second packing sealing component, and the third packing sealing component. There are two sliding grooves. The top of the sealing sleeve is provided with a locking hole 1 for cooperating with the fixing device to press and fix the packing sealing unit. There are four locking holes 1.

[0011] Furthermore, the fixing device includes a pressing end inserted into the annular groove for pressing the packing sealing unit, and a cover end fixedly installed at the top of the pressing end for driving the pressing end to move up and down. The top of the cover end is provided with a second locking hole that communicates with the first locking hole.

[0012] Furthermore, the second locking hole is provided with a bolt for passing through the first locking hole and locking the sealing sleeve and the cover end, and there are four bolts, which are distributed in a circumferential array at the top of the cover end.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] By setting up a sealing sleeve, fixing device, and packing sealing unit, when sealing the stirring shaft is required, the sliders on both sides of the packing ring one can be moved along the groove to the bottom of the annular groove, then the sliders on both sides of the packing ring two can be moved along the groove to the bottom of the annular groove, and simultaneously the sliders on both sides of the packing ring three can be moved along the groove to the bottom of the annular groove. The stirring shaft is then inserted into the sealing sleeve, causing the cover end to control the pressing end to move towards the annular groove. At the same time, bolts passing through locking holes one and two cause the pressing end to control the packing ring three to move downwards towards the bottom of the annular groove, so that trapezoidal block two can be engaged in trapezoidal groove one, and trapezoidal block one can also be engaged in trapezoidal groove one. This completes the sealing installation of the stirring shaft. It also enhances the sealing effect, extends the sealing service life, reduces the difficulty and frequency of maintenance, and improves the stability of the reactor operation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the sealing sleeve structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the fixing device structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the packing sealing unit structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the packing sealing assembly of this utility model;

[0020] Figure 6 This is a schematic diagram of the second structure of the packing sealing assembly of this utility model;

[0021] Figure 7 This is a schematic diagram of the three structures of the packing sealing assembly of this utility model.

[0022] The following is a list of component names represented by the various reference numerals in the attached figures:

[0023] 100-Sealing sleeve, 101-Annular groove, 102-Slide groove, 103-Locking hole one, 001-Bolt;

[0024] 200-Fixing device, 210-Cover end, 220-Securing hole two, 230-Pressure end;

[0025] 300-Packaging seal unit, 310-Packaging seal assembly one, 311-Packaging ring one, 312-Slider one, 313-Trapezoidal groove one, 320-Packaging seal assembly two, 321-Packaging ring two, 322-Slider two, 323-Trapezoidal block one, 324-Trapezoidal groove two, 330-Packaging seal assembly three, 331-Packaging ring three, 332-Slider three, 333-Trapezoidal block two. Detailed Implementation

[0026] The preferred embodiments of this utility model are described in detail below, and a clear and complete explanation is given in conjunction with the accompanying drawings.

[0027] Please see Figures 1-7 This utility model provides a packing sealing device.

[0028] It includes a sealing sleeve 100, a packing sealing unit 300 is provided inside the sealing sleeve 100, and a fixing device 200 is provided at the top of the sealing sleeve 100 for cooperating with the sealing sleeve 100 to press and seal the packing sealing unit 300.

[0029] The sealing sleeve 100 has an annular groove 101 inside for placing the packing sealing unit 300. The diameter of the annular groove 101 is larger than the diameter of the sealing sleeve 100, so that the packing sealing unit 300 can be placed into the bottom end of the annular groove 101, and the stirring shaft placed in the sealing sleeve 100 can be sealed.

[0030] The top end of the sealing sleeve 100 is provided with a sliding groove 102 for positioning and installing the first packing seal assembly 310, the second packing seal assembly 320 and the third packing seal assembly 330. There are two sliding grooves 102, which are symmetrically distributed in the cavity of the sealing sleeve 100. At the same time, the two sliding grooves 102 communicate with the annular groove 101 to facilitate the positioning and installation of the first packing seal assembly 310, the second packing seal assembly 320 and the third packing seal assembly 330.

[0031] The top end of the sealing sleeve 100 is provided with a locking hole 103 for cooperating with the fixing device 200 to press and fix the packing sealing unit 300. There are four locking holes 103, which are arranged in a circumferential array on the top end of the sealing sleeve 100. The cavity of the locking hole 220 is provided with a bolt 001 for passing through the locking hole 103 and locking the sealing sleeve 100 and the cover end 210. There are four bolts 001, which are arranged in a circumferential array on the top end of the cover end 210. This allows the sealing sleeve 100 to be fixed to the fixing device 200 by inserting the four bolts 001 into the locking hole 103 and the locking hole 220 and connecting them with the threaded connection of the nut.

[0032] The fixing device 200 includes a pressing end 230 inserted into the annular groove 101 for pressing the packing sealing unit 300. The pressing end 230 can move downward along the annular groove 101 and press the packing sealing assembly 310, the packing sealing assembly 320 and the packing sealing assembly 330 in the annular groove 101. A cover end 210 for driving the pressing end 230 to move up and down is fixedly installed at the top of the pressing end 230. The top of the cover end 210 has a locking hole 220 for communicating with the locking hole 103. There are four locking holes 220, which are arranged in a circumferential array at the top of the cover end 210. The diameter axis of the locking hole 220 is the same as that of the locking hole 103, so that the sealing sleeve 100 can be fixed to the cover end 210 by using a bolt 001 to pass through the locking hole 103 and the locking hole 220.

[0033] The packing seal unit 300 includes a packing seal assembly 310 disposed within the sealing sleeve 100. The top end of the packing seal assembly 310 is provided with a packing seal assembly 320 for cooperating with the packing seal assembly 310 to seal the shaft. There are several packing seal assemblies 320. The top end of the packing seal assembly 320 is provided with a packing seal assembly 330, so as to facilitate the sequential placement of the packing seal assembly 310, the packing seal assembly 320 and the packing seal assembly 330 into the annular groove 101 within the sealing sleeve 100.

[0034] The packing seal assembly 310 includes a packing ring 311 disposed at the bottom end of the sealing sleeve 100. The top end of the packing ring 311 is provided with a trapezoidal groove 313 for fixing the packing seal assembly 320. Two sliders 312 are fixedly installed on the outer side of the packing ring 311, and the two sliders 312 can slide in the groove 102 to achieve positioning and installation of the packing ring 311, so as to prevent the packing ring 311 from shaking when it falls into the annular groove 101.

[0035] The second packing seal assembly 320 includes a trapezoidal block 323 inserted into a trapezoidal groove 313. A packing ring 321 is fixedly installed at the top of the trapezoidal block 323. A trapezoidal groove 324 for fixing the third packing seal assembly 330 is opened at the top of the packing ring 321. Two sliders 322 are fixedly installed on the outer side of the packing ring 321. When the pressing end 230 moves downward along the annular groove 101, the trapezoidal block 323 at the lower end of the packing ring 321 can be controlled to be inserted into the trapezoidal groove 313, so that the packing ring 321 and the packing ring 311 can be installed.

[0036] The packing seal assembly 330 includes a trapezoidal block 333 inserted into a trapezoidal groove 324. A packing ring 331 is fixedly installed at the top of the trapezoidal block 333, and two sliders 332 are fixedly installed on the outer side of the packing ring 331. Thus, when sealing the agitator shaft is required, the sliders 312 on both sides of the packing ring 311 can be moved along the groove 102 towards the bottom of the annular groove 101, and the sliders 322 on both sides of the packing ring 321 can be moved along the groove 102 towards the bottom of the annular groove 101, while simultaneously the sliders 322 on both sides of the packing ring 331 can be moved along the groove 102 towards the bottom of the annular groove 101. The bottom end is moved, and then the stirring shaft is inserted into the sealing sleeve 100, so that the cover end 210 controls the pressing end 230 to move towards the annular groove 101. At the same time, the bolt 001 passes through the locking hole 103 and the locking hole 220, so that the pressing end 230 controls the packing ring 331 to move downward towards the bottom of the annular groove 101, so that the trapezoidal block 233 is inserted into the trapezoidal groove 1313. At the same time, the trapezoidal block 323 can also be inserted into the trapezoidal groove 1313, thus completing the sealing installation of the stirring shaft. This also enhances the sealing effect, extends the sealing service life, reduces the difficulty and frequency of maintenance, and improves the stability of the reactor operation.

[0037] Based on the above description and accompanying drawings, those skilled in the art can understand and implement this utility model. Furthermore, any non-creative modifications made to this utility model by those skilled in the art without inventive effort are still within the protection scope of this utility model.

Claims

1. A packing sealing device, comprising a sealing sleeve (100), characterized in that: The sealing sleeve (100) is provided with a packing sealing unit (300), and the top end of the sealing sleeve (100) is provided with a fixing device (200) for cooperating with the sealing sleeve (100) to press and seal the packing sealing unit (300). The packing sealing unit (300) includes a packing sealing component one (310) disposed in the sealing sleeve (100), and a packing sealing component two (320) disposed at the top end of the packing sealing component one (310) for cooperating with the packing sealing component one (310) to seal the shaft. There are several packing sealing components two (320), and a packing sealing component three (330) disposed at the top end of the packing sealing component two (320). The packing sealing assembly one (310) includes a packing ring one (311) disposed at the bottom end of the sealing sleeve (100). The top end of the packing ring one (311) is provided with a trapezoidal groove one (313) for fixing the packing sealing assembly two (320). Two sliders one (312) are fixedly installed on the outer side of the packing ring one (311). The second packing seal assembly (320) includes a trapezoidal block (323) inserted into a trapezoidal groove (313), a packing ring (321) is fixedly installed at the top of the trapezoidal block (323), a trapezoidal groove (324) for fixing the third packing seal assembly (330) is opened at the top of the packing ring (321), and two sliders (322) are fixedly installed on the outer side of the packing ring (321). The packing sealing assembly three (330) includes a trapezoidal block two (333) inserted into a trapezoidal groove two (324), a packing ring three (331) is fixedly installed at the top of the trapezoidal block two (333), and two slider three (332) are fixedly installed on the outer side of the packing ring three (331).

2. The packing sealing device according to claim 1, characterized in that, The sealing sleeve (100) has an annular groove (101) inside for placing the packing sealing unit (300). The top of the sealing sleeve (100) has a sliding groove (102) for positioning and installing the packing sealing assembly one (310), the packing sealing assembly two (320), and the packing sealing assembly three (330). There are two sliding grooves (102). The top of the sealing sleeve (100) has a locking hole one (103) for cooperating with the fixing device (200) to press and fix the packing sealing unit (300). There are four locking holes one (103).

3. A packing sealing device according to claim 2, characterized in that: The fixing device (200) includes a pressing end (230) inserted into the annular groove (101) for pressing the packing sealing unit (300). The top end of the pressing end (230) is fixedly installed with a cover end (210) for driving the pressing end (230) to move up and down. The top end of the cover end (210) is provided with a second locking hole (220) for communicating with the first locking hole (103).

4. A packing sealing device according to claim 3, characterized in that: The second locking hole (220) is provided with bolts (001) for passing through the first locking hole (103) and locking the sealing sleeve (100) and the cover end (210). There are four bolts (001), and the four bolts (001) are arranged in a circumferential array at the top of the cover end (210).

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