Mechanical seal dismounting tool

Abstract

The utility model discloses a mechanical seal dismounting tool which comprises a hydraulic jack, adjusting grooves are formed in the inner sides of the two ends of the hydraulic jack, threaded rods are symmetrically arranged on the inner sides of the adjusting grooves in the two ends and used for being in threaded connection with a mechanical seal, fastening nuts are in threaded connection with the outer sides of the threaded rods, and a tool is arranged between the hydraulic jack and a main shaft. A positioning centering mechanism is installed at the end, away from the hydraulic jack, of the tool. The mechanical seal dismounting device is simple and reasonable in structural design, convenient and fast to use and operate, high in practicability, simple and convenient to operate, low in cost and high in universality and generalization performance, the problem that mechanical seal dismounting is difficult is solved by ingeniously using a lever structure, a thread structure, a hydraulic structure and the like, and through the structural design of the positioning and centering mechanism, the mechanical seal dismounting efficiency is improved. And when the mechanical seal is disassembled, the stress direction of the mechanical seal is in the central axis direction of the main shaft, so that the mechanical seal can be disassembled conveniently, and the situation that the mechanical seal is stuck is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical seal dismounting technical field especially relates to a kind of mechanical seal dismounting tools. BACKGROUND

[0002] In common organic working medium expander, to ensure that working medium zero leakage, often use mechanical seal as the shaft end sealing of machine. However, mechanical seal structure is complex, O-ring use quantity, position is more, after long-term use, rubber pad aging adhesion, main shaft rust and the like, leading to dismounting difficulty.

[0003] Based on this, the person skilled in the art proposes a kind of mechanical seal dismounting tool, to solve the above technical problems and propose a new solution. CONTENT OF UTILITY MODEL

[0004] Based on this, it is necessary to provide a kind of mechanical seal dismounting tool to the problem in the above background art to facilitate the dismounting of mechanical seal.

[0005] In order to solve the above technical problems, the utility model adopts the technical scheme as follows:

[0006] The mechanical seal dismounting tool specifically includes hydraulic jack, the inside of the adjusting groove is provided with a threaded rod symmetrically, the threaded rod is connected with the machine seal thread, the outside of the threaded rod is connected with a fastening nut, the hydraulic jack is provided with a tool between the main shaft, and the tool is provided with a positioning centering mechanism away from the one end of the hydraulic jack.

[0007] Preferably, the inside of the adjusting groove is provided with an abutting table, the one end of the fastening nut is fixed with a positioning ring close to the abutting table, and the positioning ring is used for abutting with the abutting table.

[0008] Preferably, the positioning centering mechanism includes a centering block installed away from the one end of the tool of the hydraulic jack, the inside of the centering block is provided with a positioning cavity, the positioning cavity is collinear with the central axis of the main shaft, a plurality of clamping rods are rotatably arranged on the inside of the centering block along the outer periphery of the positioning cavity, and the inside of the two ends of the clamping rod is rotatably connected with a roller.

[0009] Preferably, the positioning centering mechanism further includes a mounting ring sleeved on the outside of the centering block, the one end of the mounting ring is provided with the same number of lugs as the clamping rods, the first spring is arranged between the corresponding clamping rod and the lug, the two ends of the first spring are respectively abutted with the corresponding clamping rod and the lug, the one end of the mounting ring away from the clamping rod is provided with an abutting seat, and the abutting seat is threadedly connected to the one end of the centering block.

[0010] Preferably, the centering block is fixed with a stud near one end of the tooling, and the centering block is mounted on the output end of the tooling through the stud.

[0011] Preferably, the fastening nut comprises symmetrically arranged nut ring one and nut ring two, and the inner side of the nut ring one and the nut ring two is provided with a threaded section matched with the threaded rod, the positioning ring comprises symmetrically arranged first ring body and second ring body, the first ring body is fixedly connected with the nut ring one, the second ring body is fixedly connected with the nut ring two, the outer side of the first ring body and the second ring body is provided with an adjusting mounting ring, the end of the first ring body and the second ring body away from each other is connected with a second spring, the second spring is connected with the adjusting mounting ring, the inner side of both ends of the hydraulic jack is provided with a sliding connection groove, the adjusting mounting ring is slidingly connected in the inner side of the corresponding sliding connection groove, the sliding block is fixed on both sides of the adjusting mounting ring, the sliding block is slidingly connected in the inner side of the corresponding sliding connection groove, the adjusting gap is arranged between the first ring body and the second ring body, the mounting hole is arranged in the inner side of the sliding block and on one side of the adjusting gap, the adjusting column is slidingly connected in the inner side of the mounting hole, the third spring is sleeved on the outer side of the adjusting column, and the both ends of the third spring are respectively abutted with the corresponding adjusting column and the sliding block.

[0012] Preferably, the first ring body and the second ring body are provided with movable blocks on both sides, the adjusting mounting ring is provided with movable grooves matched with the movable blocks on both sides of the inner side, and the first ring body and the second ring body are slidingly connected with the adjusting mounting ring through the connection of the movable blocks and the movable grooves.

[0013] Preferably, the outer side of the nut ring one and the nut ring two is sleeved with a fastening sleeve.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1、The utility model discloses a simple and reasonable structure, convenient and fast operation, high practicality, clever use of lever, thread, hydraulic structure solves the problem of difficult mechanical seal disassembly, simple operation, low cost, strong universality and popularization.

[0016] 2、The utility model discloses the structural design of the positioning centering mechanism makes the stress direction of the disassembly machine seal along the central axis direction of the main shaft, thereby facilitating the disassembly of the machine seal, and preventing the situation of being stuck.

[0017] 3、The utility model discloses the setting of fastening nut, adjusting groove and threaded rod, the position of the threaded rod is adjusted, the adaptability of the utility model is improved.

[0018] 4. The utility model discloses a structure design of nut ring one, nut ring two, first ring body, second ring body, adjusting installation ring, sliding block, adjusting column, third spring, fastening sleeve etc. facilitates the installation and dismounting of fastening nut and positioning ring, and fastening nut and positioning ring are moved to the position required conveniently and quickly, thereby greatly improve the dismounting efficiency, and save manual labor intensity. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the scheme in the utility model, the drawings needed in the embodiment description will be briefly introduced below, and obviously, the drawings in the following description are some embodiments of the utility model, and other drawings can also be obtained according to these drawings without creative labor for the ordinary skilled in the art.

[0020] Figure 1 It is the schematic diagram of the front view structure of the utility model Figure 1 ;

[0021] Figure 2 It is the schematic diagram of the section structure of the utility model Figure 1 ;

[0022] Figure 3 It is the schematic diagram of the axial view structure of the utility model Figure 1 ;

[0023] Figure 4 It is the schematic diagram of the axial view structure of the utility model Figure 2 ;

[0024] Figure 5 It is the schematic diagram of the front view structure of the utility model Figure 2 ;

[0025] Figure 6 It is the schematic diagram of the section structure of the utility model Figure 2 ;

[0026] Figure 7 It is the schematic diagram of the axial view structure of the utility model Figure 3 ;

[0027] Figure 8 It is the schematic diagram of the exploded structure of the positioning centering mechanism of the utility model;

[0028] Figure 9 It is the schematic diagram of the structure of lug and first spring of the utility model;

[0029] Figure 10 It is the schematic diagram of the structure of nut ring one, nut ring two, first ring body, second ring body of the utility model;

[0030] Figure 11 It is the schematic diagram of the structure of adjusting installation ring, adjusting column and fastening sleeve of the utility model.

[0031] The marks in the figure are explained as follows:

[0032] 1, main shaft; 2, machine seal; 3, threaded rod; 4, hydraulic jack; 5, tool; 6, fastening nut; 7, adjusting groove; 8, positioning ring; 9, centering block; 10, clamping rod; 11, roller; 12, mounting ring; 13, lug; 14, first spring; 15, abutting seat; 16, stud; 17, sliding connection groove; 18, second spring; 19, adjusting mounting ring; 20, sliding block; 21, fastening sleeve; 22, mounting hole; 23, adjusting column; 24, third spring; 25, movable block; 26, movable groove; 8a, first ring body; 8b, second ring body; 6a, nut ring one; 6b, nut ring two. DETAILED DESCRIPTION

[0033] In order for those skilled in the art to better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0034] Please refer to Figures 1-11 The mechanical seal dismounting tool provided by the present application comprises a hydraulic jack 4, adjusting grooves 7 are formed in the inner sides of the two ends of the hydraulic jack 4, threaded rods 3 are symmetrically arranged in the inner sides of the adjusting grooves 7 of the two ends, which are used for threaded connection with a machine seal 2, fastening nuts 6 are threadedly connected to the outer sides of the threaded rods 3, a tool 5 is arranged between the hydraulic jack 4 and a main shaft 1, and a positioning and centering mechanism is arranged at the end of the tool 5 away from the hydraulic jack 4. The present application has the advantages of simple and reasonable structure, convenient and fast operation, high practicability, ingenious use of levers, threads and hydraulic structures, and the like, and solves the problem of difficult dismounting of mechanical seals. The present application is simple in operation, low in cost, and has strong universality and popularization.

[0035] Please refer to Figures 1-4 A abutting table is arranged in the inner side of the adjusting groove 7, and a positioning ring 8 is fixed to the end of the fastening nut 6 close to the abutting table. The positioning ring 8 is used for abutting against the abutting table. In the process of dismounting the mechanical seal, the threaded rods 3 are symmetrically screwed into the top screw holes of the machine seal 2, the hydraulic jack 4 is mounted into the corresponding hole, the fastening nut 6 and the positioning ring 8 are screwed to the appropriate positions of the threaded rods 3, so that the positioning ring 8 abuts against the abutting table, and the tool 5 is put in. Then, the position of the output end of the tool 5 is adjusted to adjust the hydraulic jack 4 to the appropriate position, and the machine seal 2 is taken out by the tool 5.

[0036] Please refer to Figures 5-9The positioning and centering mechanism comprises a centering block 9 mounted on the tool 5 away from the hydraulic jack 4, an inner side of the centering block 9 is provided with a positioning cavity, the positioning cavity is collinear with the central axis of the main shaft 1, a plurality of clamping rods 10 are arranged in the inner side of the centering block 9 along the outer periphery of the positioning cavity, and the inner sides of the two ends of the clamping rods 10 are rotatably connected with rollers 11. Specifically, when the mechanical seal is disassembled, the centering block 9 is mounted on the output end of the tool 5, the output end of the tool 5 is collinear with the central axis of the centering block 9, and then the centering block 9 is sleeved on the main shaft 1. During the sleeving process, the main shaft 1 extends into the inner sides of the plurality of clamping rods 10 and is clamped by the rollers 11, so that the central axis of the main shaft 1 is collinear with the output end of the tool 5, so that the stress direction of the mechanical seal 2 is along the central axis direction of the main shaft 1.

[0037] Please refer to Figures 5-9 The positioning and centering mechanism further comprises a mounting ring 12 sleeved on the outer side of the centering block 9, the mounting ring 12 is provided with a plurality of lugs 13 on the outer periphery of one end, the number of the lugs 13 is the same as that of the clamping rods 10, a first spring 14 is arranged between the corresponding clamping rod 10 and the lug 13, the two ends of the first spring 14 are respectively abutted with the corresponding clamping rod 10 and the lug 13, the end of the mounting ring 12 away from the clamping rod 10 is provided with an abutment seat 15, the abutment seat 15 is threadedly connected to one end of the centering block 9, and a threaded hole 16 is fixed to one end of the centering block 9 close to the tool 5. The centering block 9 is mounted on the output end of the tool 5 through the threaded hole 16. Specifically, through the arrangement of the mounting ring 12 and the first spring 14, the end portions of the clamping rods 10 located in the inner side of the centering block 9 are close to each other in the natural state, and the end portions outside the centering block 9 are separated from each other, so as to facilitate the insertion of the main shaft 1 into the inner side of the centering block 9 for centering. The threaded hole 16 is arranged to facilitate the mounting of the centering block 9 on the output end of the tool 5. In actual use, a threaded groove matched with the threaded hole 16 should be formed on the output end of the tool 5. The abutment seat 15 is arranged to facilitate the mounting and dismounting of the mounting ring 12.

[0038] Please refer to Figures 9-11The fastening nut 6 comprises symmetrically arranged nut ring one 6a and nut ring two 6b, the inner side of the nut ring one 6a and the nut ring two 6b is provided with a threaded section matched with the threaded rod 3, the positioning ring 8 comprises symmetrically arranged first ring body 8a and second ring body 8b, the first ring body 8a is fixedly connected with the nut ring one 6a, the second ring body 8b is fixedly connected with the nut ring two 6b, the outer side of the first ring body 8a and the second ring body 8b is provided with an adjusting mounting ring 19, the end, away from each other, of the first ring body 8a and the second ring body 8b is connected with the second spring 18, under the natural state, under the action of the second spring 18, the nut ring one 6a and the nut ring two 6b are close to each other, the second spring 18 is connected with the adjusting mounting ring 19, the inner side of the two ends of the hydraulic jack 4 is provided with a sliding connection groove 17, the adjusting mounting ring 19 is slidingly connected in the inner side of the corresponding sliding connection groove 17, the two sides of the adjusting mounting ring 19 are fixedly provided with sliding blocks 20, the sliding blocks 20 are slidingly connected in the inner side of the corresponding sliding connection groove 17, the adjusting gap is arranged between the first ring body 8a and the second ring body 8b, the inner side of the sliding block 20 and the side of the adjusting gap is provided with a mounting hole 22, the inner side of the mounting hole 22 is slidingly connected with an adjusting column 23, the outer side of the adjusting column 23 is sleeved with a third spring 24, the two ends of the third spring 24 are respectively abutted with the corresponding adjusting column 23 and the sliding block 20, the two sides of the first ring body 8a and the second ring body 8b are provided with movable blocks 25, the inner side of the adjusting mounting ring 19 is provided with movable grooves 26 matched with the movable blocks 25, the first ring body 8a and the second ring body 8b are slidingly connected with the adjusting mounting ring 19 through the connection of the movable blocks 25 and the movable grooves 26, the outer side of the nut ring one 6a and the nut ring two 6b is sleeved with a fastening sleeve 21, specifically, in actual use, the threaded rod 3 can slide in the inner side of the adjusting groove 7 along with the positioning ring 8, the fastening nut 6 and the adjusting mounting ring 19, so that the position of the threaded rod 3 can be flexibly adjusted, in use, firstly, the threaded rod 3 is mounted on the mechanical seal 2, then the hydraulic jack 4 is sleeved on the threaded rod 3, the specific sleeving process is that, the adjusting column 23 on the two sides is pressed, so that the adjusting column 23 extends into the mounting hole 22 and extends into the inner side of the adjusting mounting ring 19, and extends into the adjusting gap between the first ring body 8a and the second ring body 8b, so that the first ring body 8a and the second ring body 8b are separated from each other, at this time, the nut ring one 6a and the nut ring two 6b, the first ring body 8a and the second ring body 8b can be sleeved on the outer side of the corresponding threaded rod 3, then the hydraulic jack 4 can be quickly moved to the corresponding position, then the adjusting column 23 is loosened, the adjusting column 23 is separated from the adjusting gap under the action of the third spring 24, the nut ring one 6a and the nut ring two 6b are close to each other and matched with the threaded rod 3, then the fastening sleeve 21 is sleeved on the outer side of the nut ring one 6a and the nut ring two 6b to position them, so that the position of the nut ring one 6a and the nut ring two 6b is fixed, so that the position of the hydraulic jack 4 is quickly positioned, so as to improve the convenience of use.

[0039] The specific working principle of the mechanical seal dismounting tool is that

[0040] In the mechanical seal dismounting process, the threaded rod 3 is symmetrically screwed into the top screw hole of the mechanical seal 2, then the adjusting column 23 on both sides is pressed, the adjusting column 23 is extended into the mounting hole 22 and extended to the inside of the adjusting mounting ring 19, and extended into the adjusting gap between the first ring body 8a and the second ring body 8b, so that the first ring body 8a and the second ring body 8b are separated from each other, at this time, the nut ring one 6a and the nut ring two 6b, the first ring body 8a and the second ring body 8b are sleeved outside the corresponding threaded rod 3, then the hydraulic jack 4 can be quickly moved to a position abutting against the end face of the tool 5, then the adjusting column 23 is loosened, the adjusting column 23 is separated from the adjusting gap under the action of the third spring 24, the nut ring one 6a and the nut ring two 6b are close to each other and cooperated with the threaded rod 3, then the fastening sleeve 21 is sleeved outside the nut ring one 6a and the nut ring two 6b to position the nut ring one 6a and the nut ring two 6b, so as to quickly position the position of the hydraulic jack 4, then the position of the hydraulic jack 4 is adjusted by adjusting the position of the output end of the tool 5, and the tool 5 is used to take out the mechanical seal 2.

[0041] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0042] Obviously, the above-described embodiments are only some embodiments of the present application, not all embodiments, and the preferred embodiments of the present application are given in the drawings, but do not limit the patent scope of the present application. The present application can be realized in many different forms, and conversely, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or equivalently replace some technical features. Any equivalent structure made by using the contents of the present application specification and drawings, directly or indirectly used in other related technical fields, is also within the patent protection scope of the present application.

Claims

1. A mechanical seal dismounting tool, characterized in that, Including hydraulic jack (4), the inside of both ends of the hydraulic jack (4) is provided with adjusting groove (7), the inside of both ends of the adjusting groove (7) is provided with threaded rod (3) symmetrically, is used for with machine seal (2) threaded connection, the outside of the threaded rod (3) is connected with fastening nut (6), the hydraulic jack (4) is equipped with tooling (5) between main shaft (1), the tooling (5) is installed with positioning centering mechanism away from one end of the hydraulic jack (4).

2. The mechanical seal dismounting tool according to claim 1, characterized in that The inside of the adjusting groove (7) is provided with abutting table, one end of the fastening nut (6) is fixed with positioning ring (8) close to the abutting table, the positioning ring (8) is used for abutting with the abutting table.

3. The mechanical seal dismounting tool according to claim 1, characterized in that The positioning centering mechanism includes the centering block (9) installed away from one end of the tooling (5) of the hydraulic jack (4), the inside of the centering block (9) is provided with positioning cavity, the positioning cavity is collinear with the central axis of main shaft (1), the inside of the centering block (9) is provided with a plurality of clamping rods (10) rotationally arranged along the outer periphery of the positioning cavity, the inside of both ends of the clamping rod (10) is rotatably connected with the roller (11).

4. The mechanical seal dismounting tool according to claim 3, characterized in that The positioning centering mechanism further includes the mounting ring (12) sleeved on the outside of the centering block (9), one end of the mounting ring (12) is provided with the same number of lugs (13) as the clamping rod (10), corresponding the first spring (14) is arranged between the clamping rod (10) and the lug (13), both ends of the first spring (14) are respectively abutted with corresponding clamping rod (10) and lug (13), the end of the mounting ring (12) away from the clamping rod (10) is provided with abutting seat (15), the abutting seat (15) is threaded in one end of the centering block (9).

5. The mechanical seal dismounting tool according to claim 4, characterized in that One end of the centering block (9) close to the tooling (5) is fixed with stud (16), the centering block (9) is installed on the output end of the tooling (5) through the stud (16).

6. The mechanical seal dismounting tool according to claim 2, characterized in that The fastening nut (6) comprises symmetrically arranged nut ring one (6a) and nut ring two (6b), the nut ring one (6a) and nut ring two (6b) inside is provided with the thread section matched with the threaded rod (3), the positioning ring (8) comprises symmetrically arranged first ring body (8a) and second ring body (8b), the first ring body (8a) is fixedly connected with the nut ring one (6a), the second ring body (8b) is fixedly connected with the nut ring two (6b), the outer side of the first ring body (8a) and second ring body (8b) is equipped with adjusting mounting ring (19), the first ring body (8a) and the second ring body (8b) are connected with the second spring (18) at the end away from each other, the second spring (18) is connected with the adjusting mounting ring (19), the hydraulic jack (4) both ends inside is provided with sliding connection groove (17), the adjusting mounting ring (19) is slidably connected in the inside of corresponding sliding connection groove (17), the both sides of the adjusting mounting ring (19) are fixed with sliding block (20), the sliding block (20) is slidably connected in the inside of corresponding sliding connection groove (17), the first ring body (8a) and the second ring body (8b) are provided with adjusting gap, the inside of the sliding block (20) and located at the adjusting gap side is provided with mounting hole (22), the inside of the mounting hole (22) is slidably connected with adjusting column (23), the adjusting column (23) outside is sleeved with third spring (24), the both ends of the third spring (24) are respectively abutted with corresponding adjusting column (23) and sliding block (20).

7. The mechanical seal dismounting tool according to claim 6, characterized in that The both sides of the first ring body (8a) and the second ring body (8b) are provided with movable block (25), the inside of the adjusting mounting ring (19) is provided with movable groove (26) matched with the movable block (25), the first ring body (8a) and the second ring body (8b) are slidably connected with the adjusting mounting ring (19) through the connection of the movable block (25) and the movable groove (26).

8. The mechanical seal dismounting tool according to claim 7, characterized in that The nut ring one (6a) and the nut ring two (6b) outside are sleeved with fastening sleeve (21).

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