Mechanical sealing device for pump changed from bulk packaging to container packaging

Abstract

The utility model discloses a mechanical sealing device for a bulk-to-container pump, which comprises a shaft sleeve, a gland is arranged on the peripheral side of one end of the shaft sleeve, a static ring and a moving ring are arranged on the inner side of the gland, a push ring is elastically and slidably matched with the peripheral side of the other end of the shaft sleeve, an annular groove is arranged in the gland, and a plurality of convex grooves are arranged on the peripheral side of the static ring. A first ring block is arranged on the inner side of the annular groove, and a second ring block is arranged on the inner side of the annular groove in a sliding fit mode. The second ring block in sliding fit with the inner side of the annular groove can drive the second push blocks to synchronously perform transverse horizontal movement, so that the second push blocks synchronously extrude the first push blocks, and one ends of the first push blocks extend into the convex grooves and are in clamping connection with the convex grooves; the gland and the static ring are fixed, so that the whole mechanical seal is in a container type, the operation is simple, and the occurrence of mechanical seal faults caused by installation errors is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to bulk pump sealing technical field, concretely relates to bulk changes mechanical sealing device for packing pump. BACKGROUND

[0002] Mechanical seal refers to the device that prevents fluid leakage by at least one pair of end faces perpendicular to the rotation axis under the action of fluid pressure and the elasticity of compensation mechanism and the cooperation of auxiliary seal.

[0003] Because the mechanical seal has many parts, and the dynamic and static ring end faces have high requirements such as surface roughness and flatness, therefore, the bulk mechanical seal needs professional personnel to disassemble and assemble at the user site, and installation failure, bumping and the like lead to frequent mechanical seal failure. Therefore, it is urgent to design the mechanical sealing device for bulk changing packing pump to solve the above problems. UTILITY MODEL CONTENTS

[0004] The utility model discloses a mechanical sealing device for bulk changing packing pump, which solves the above problems in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] The mechanical sealing device for bulk changing packing pump comprises a shaft sleeve, a gland is arranged on the periphery of one end of the shaft sleeve, a static ring and a dynamic ring are arranged on the inner side of the gland, a push ring is elastically and slidingly matched on the periphery of the other end of the shaft sleeve, an annular groove is formed in the interior of the gland, a plurality of convex grooves are formed on the periphery of the static ring, a first ring block is arranged on the inner side of the annular groove, and a second ring block is slidingly matched in the annular groove.

[0007] A plurality of first push blocks are elastically and slidingly matched on one side of the first ring block, one end of the first push block corresponds to the convex groove, a plurality of second push blocks are arranged on one side of the second ring block, the second push blocks correspond to the first push blocks, a clamping assembly is arranged in each of the plurality of convex grooves, and one end of the first push block corresponds to the clamping assembly.

[0008] Further, the clamping assembly comprises two first springs symmetrically arranged on the inner side of the convex groove, two clamping blocks arranged on one end of the two first springs, and two arc grooves formed on the adjacent ends of the two clamping blocks.

[0009] Further, a plurality of sliding grooves are formed on one side of the first ring block, an arc-shaped clamping block is arranged on one end of each of the plurality of first push blocks, the arc-shaped clamping block corresponds to the two arc grooves, and a second spring is arranged in each of the plurality of sliding grooves.

[0010] Further, one end of the second spring is fixed with the other end of the first push block, the first push block is slidingly fitted in the sliding groove, and the first push block and the second push block are provided with inclined surfaces on one side, and adjacent two inclined surfaces correspond to each other.

[0011] Further, two screw rods are rotationally fitted on the upper side of the first ring block in a symmetrical manner, the second ring block is threadedly fitted with the two screw rods, one end of each of the two screw rods is provided with a rotating disc, and the two rotating discs are rotationally fitted on one side of the gland.

[0012] Further, a first sealing ring is arranged between the gland and the static ring, a second sealing ring is arranged between the dynamic ring and the push ring, and a third sealing ring is arranged on the inner side of the shaft sleeve.

[0013] Further, a positioning ring is arranged on the circumferential side of the other end of the shaft sleeve, a third spring is arranged between the positioning ring and the push ring, the third spring is arranged around the circumferential side of the shaft sleeve, and a plurality of notches are formed in one side of the gland.

[0014] Further, a plurality of mounting holes are formed in one side of the static ring and communicate with the plurality of notches, a threaded slot is formed in each of the plurality of mounting holes, and a bolt is arranged in each of the plurality of notches and threadedly fitted with the threaded slot.

[0015] In the above technical solution, the bulk-to-packaged pump mechanical sealing device has the following beneficial effects:

[0016] 1. The second ring block slidingly fitted on the inner side of the annular groove can drive a plurality of second push blocks to synchronously move horizontally, so that the plurality of second push blocks synchronously extrude a plurality of first push blocks, one end of the plurality of first push blocks is inserted into a plurality of convex grooves and forms a clamping relationship with the plurality of convex grooves, the gland and the static ring form a fixed relationship, and the entire mechanical seal becomes a packaged type, so that the operation is simple, and the mechanical sealing failure caused by installation errors is reduced.

[0017] 2. The clamping assembly can clamp and fix one end of the plurality of first push blocks, and further improve the fixed relationship between the gland and the static ring, so that they are fixed together firmly. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0019] Figure 1The utility model discloses bulk change container pump mechanical sealing device embodiment provides structure main view.

[0020] Figure 2 The utility model discloses bulk change container pump mechanical sealing device embodiment provides shaft sleeve structure schematic view.

[0021] Figure 3 The utility model discloses bulk change container pump mechanical sealing device embodiment provides gland structure schematic view.

[0022] Figure 4 The utility model discloses bulk change container pump mechanical sealing device embodiment provides static ring structure schematic view.

[0023] Figure 5 The utility model discloses bulk change container pump mechanical sealing device embodiment provides chute structure schematic view.

[0024] 1, shaft sleeve;2, gland;3, static ring;4, dynamic ring;5, push ring;6, annular groove;7, convex groove;8, first ring block;9, second ring block;10, first push block;11, second push block;12, first spring;13, clamping block;14, chute;15, arc clamping block;16, second spring;17, screw;18, carousel;19, first sealing ring;20, second sealing ring;21, third sealing ring. 22, positioning ring;23, third spring;24, notch;25, bolt. DETAILED DESCRIPTION

[0025] In order to make the technical personnel of the prior art better understand the technical scheme of the utility model, the utility model will be introduced further in detail below with the accompanying drawings.

[0026] As Figures 1-5 The utility model discloses bulk change container pump mechanical sealing device embodiment provides, including shaft sleeve 1, the circumferential side of one end of shaft sleeve 1 is equipped with gland 2, the inside of gland 2 is equipped with static ring 3 and dynamic ring 4, and the circumferential side of the other end of shaft sleeve 1 is elastically and slidingly matched with push ring 5, and the inside of gland 2 is set with annular groove 6, and the circumferential side of static ring 3 is set with multiple convex grooves 7, and the inside of annular groove 6 is equipped with first ring block 8, and the inside of annular groove 6 is slidingly matched with second ring block 9. The side of first ring block 8 is elastically and slidingly matched with multiple first push blocks 10, and the one end of first push block 10 corresponds with convex groove 7, and the side of second ring block 9 is equipped with multiple second push blocks 11, and second push block 11 corresponds with first push block 10, and multiple convex grooves 7 are all equipped with clamping assembly, and the one end of clamping assembly corresponds with first push block 10.

[0027] In the embodiment, including shaft sleeve 1;

[0028] Specifically, the other end of the shaft sleeve 1 is provided with a positioning ring 22 on the periphery, a third spring 23 is arranged between the positioning ring 22 and the push ring 5, the third spring 23 is wrapped around the periphery of the shaft sleeve 1, and a plurality of notches 24 are formed on one side of the gland 2. The third spring 23 is arranged to make the push ring 5 extrude the movable ring 4, so that the movable ring 4 is tightly attached to the static ring 3, and the medium leakage can be prevented.

[0029] In this embodiment, the shaft sleeve 1 is provided with a gland 2 on the periphery of one end, the inner side of the gland 2 is provided with a static ring 3 and a movable ring 4, and the other end of the shaft sleeve 1 is elastically and slidingly fitted with a push ring 5.

[0030] Specifically, a first sealing ring 19 is arranged between the gland 2 and the static ring 3, a second sealing ring 20 is arranged between the movable ring 4 and the push ring 5, and a third sealing ring 21 is arranged on the inner side of the shaft sleeve 1. The first sealing ring 19 can prevent the medium from leaking through the gap between the outer edge of the static ring 3 and the gland 2.

[0031] Further, a plurality of mounting holes are formed on one side of the static ring 3 and communicate with the plurality of notches 24, a plurality of threaded grooves are formed in the plurality of mounting holes, a plurality of bolts 25 are arranged in the plurality of notches 24, and the bolts 25 are threadedly fitted with the threaded grooves. The static ring 3 and the gland 2 are connected together through the threaded fitting of the bolts 25 and the threaded grooves, so as to further improve the fixing relationship between the static ring 3 and the gland 2.

[0032] In this embodiment, the inner side of the gland 2 is provided with an annular groove 6, a plurality of convex grooves 7 are formed on the periphery of the static ring 3, a first ring block 8 is arranged on the inner side of the annular groove 6, a second ring block 9 is slidingly fitted on the inner side of the annular groove 6, a plurality of first push blocks 10 are elastically and slidingly fitted on one side of the first ring block 8, one end of the first push block 10 corresponds to the convex groove 7, a plurality of second push blocks 11 are arranged on one side of the second ring block 9, and the second push blocks 11 correspond to the first push blocks 10.

[0033] Specifically, a plurality of sliding grooves 14 are formed on one side of the first ring block 8, one end of each of the plurality of first push blocks 10 is provided with an arc-shaped clamping block 15, the arc-shaped clamping block 15 corresponds to two arc-shaped grooves, and a second spring 16 is arranged in each of the plurality of sliding grooves 14. The second spring 16 can drive the first push block 10 to automatically rebound and return to the original position, so as to cancel the clamping relationship between the arc-shaped clamping block 15 and the convex groove 7, and facilitate disassembly of the static ring 3.

[0034] Specifically, one end of the second spring 16 is fixed with the other end of the first push block 10, the first push block 10 is slidingly fitted in the sliding groove 14, and the first push block 10 and the second push block 11 are provided with inclined surfaces on one side, and the adjacent two inclined surfaces correspond to each other. The second spring 16 can drive the first push block 10 to automatically rebound and restore to the original position, thereby reducing the blocking of the second push block 11 to the first push block 10, so that the first push block 10 moves more smoothly.

[0035] Specifically, the upper side of the first ring block 8 is symmetrically provided with two screw rods 17, the second ring block 9 is threadedly connected with the two screw rods 17, one end of each of the two screw rods 17 is provided with a rotating disc 18, and the two rotating discs 18 are rotatably connected with one side of the gland 2. The rotating disc 18 can drive the screw rod 17 to rotate, so that the screw rod 17 is threadedly connected with the second ring block 9, thereby driving the second ring block 9 to move horizontally, and preparing for the connection between the gland 2 and the static ring 3.

[0036] In this embodiment, the plurality of convex grooves 7 are provided with clamping assemblies corresponding to one end of the first push block 10.

[0037] Specifically, the clamping assembly includes two first springs 12 symmetrically arranged on the inner side of the convex groove 7, two clamping blocks 13 arranged at one end of the two first springs 12, and two arc grooves opened at the adjacent ends of the two clamping blocks 13. The two first springs 12 can drive the two clamping blocks 13 to clamp and fix the arc-shaped clamping block 15, thereby further enhancing the fixed relationship between the gland 2 and the static ring 3.

[0038] Work steps: when the cover 2 and the static ring 3 need to be connected together, manually rotate the two rotating discs 18, the two rotating discs 18 drive the two screw rods 17 to rotate synchronously, so that the two screw rods 17 are in threaded cooperation with the second ring block 9, thereby driving the second ring block 9 to slide fit in the annular groove 6, so that the second ring block 9 drives the plurality of second push blocks 11 to extrude the plurality of first push blocks 10, at this time the plurality of first springs 12 synchronously perform elastic expansion and contraction, and at the same time the plurality of first push blocks 10 slide fit in the plurality of sliding grooves 14, so that the plurality of first push blocks 10 drive the plurality of arc-shaped clamping blocks 15 to extend into the plurality of convex grooves 7 for clamping, at this time the two sides of the arc-shaped clamping block 15 extrude the two arc-shaped grooves, so that the two clamping blocks 13 drive the two first springs 12 to synchronously perform elastic expansion and contraction, so that the two clamping blocks 13 are tightly attached to the two sides of the arc-shaped clamping block 15, realizing clamping and fixing of the arc-shaped clamping block 15, so that the cover 2 and the static ring 3 are fixedly connected together, then the plurality of bolts 25 are inserted into the plurality of mounting holes, at this time the operator rotates the plurality of bolts 25, and at the same time the plurality of bolts 25 are in threaded cooperation with the plurality of threaded grooves, thereby fixedly connecting the cover 2 and the static ring 3 to form a whole, so that the whole mechanical seal can be assembled before leaving the factory to form a complete set, and the user only needs to pass the shaft through the mechanical seal and place it on the corresponding pump cavity opening, so that the installation is simple and convenient, and the mechanical seal failure caused by installation is reduced.

[0039] When the static ring 3 and the dynamic ring 4 need to be tightly attached, at this time the third spring 23 drives the push ring 5 to slide fit on the side of the shaft sleeve 1, thereby the push ring 5 pushes one side of the dynamic ring 4, so that the dynamic ring 4 and the static ring 3 are tightly attached.

[0040] The above only describes some exemplary embodiments of the present application by way of illustration, without doubt, for ordinary skilled in the art, without departing from the spirit and scope of the present application, the described embodiments can be modified in various ways. Therefore, the above drawings and description are illustrative in nature and should not be understood as limiting the scope of protection of the claims of the present application.

Claims

1. Mechanical seal device for pumps for bulk-to-unit loading, comprising a shaft sleeve (1), characterized in that, The outer side of one end of the shaft sleeve (1) is provided with a gland (2), the inner side of the gland (2) is provided with a static ring (3) and a dynamic ring (4), the outer side of the other end of the shaft sleeve (1) is elastically and slidingly fitted with a push ring (5), the inside of the gland (2) is provided with an annular groove (6), the outer side of the static ring (3) is provided with a plurality of convex grooves (7), the inner side of the annular groove (6) is provided with a first ring block (8), the inner side of the annular groove (6) is slidingly fitted with a second ring block (9); One side of the first ring block (8) is elastically and slidingly fitted with a plurality of first push blocks (10), one end of the first push block (10) corresponds to the convex groove (7), one side of the second ring block (9) is provided with a plurality of second push blocks (11), the second push block (11) corresponds to the first push block (10), a plurality of the convex grooves (7) are provided with clamping assemblies, the clamping assemblies correspond to one end of the first push block (10).

2. The mechanical seal device for a pump for bulk-to-unit loading according to claim 1, wherein The clamping assembly comprises two first springs (12) symmetrically provided on the inner side of the convex groove (7), two clamping blocks (13) provided on one end of the two first springs (12), and two arc grooves provided on adjacent ends of the two clamping blocks (13).

3. The mechanical seal device for a bulk-to-unit pump according to claim 2, characterized by One side of the first ring block (8) is provided with a plurality of sliding grooves (14), one end of a plurality of the first push blocks (10) is provided with an arc-shaped clamping block (15), the arc-shaped clamping block (15) corresponds to the two arc grooves, and a second spring (16) is provided in each of the plurality of sliding grooves (14).

4. The mechanical seal device for a bulk-to-unit pump according to claim 3, wherein One end of the second spring (16) is fixed to the other end of the first push block (10), the first push block (10) is slidingly fitted in the sliding groove (14), and one side of the first push block (10) and the second push block (11) is provided with an inclined surface, and adjacent two inclined surfaces correspond to each other.

5. The mechanical seal device for a pump for bulk-to-unit loading according to claim 1, wherein The upper side of the first ring block (8) is symmetrically rotationally fitted with two screw rods (17), the second ring block (9) is threadedly fitted with the two screw rods (17), one end of the two screw rods (17) is provided with a rotating disc (18), and the two rotating discs (18) are rotationally fitted on one side of the gland (2).

6. The mechanical seal device for a pump for bulk-to-unit loading according to claim 1, wherein A first sealing ring (19) is provided between the gland (2) and the static ring (3), a second sealing ring (20) is provided between the dynamic ring (4) and the push ring (5), and a third sealing ring (21) is provided on the inner side of the shaft sleeve (1).

7. The mechanical seal apparatus for bulk-to-unit pumps according to claim 1, wherein The outer side of the other end of the shaft sleeve (1) is provided with a positioning ring (22), a third spring (23) is provided between the positioning ring (22) and the push ring (5), the third spring (23) surrounds the outer side of the shaft sleeve (1), and a plurality of notches (24) are provided on one side of the gland (2).

8. The mechanical seal device for a pump for bulk-to-unit loading according to claim 7, wherein A mounting hole is provided on one side of the static ring (3) and communicates with a plurality of the notches (24), a threaded groove is provided in each of the mounting holes, a bolt (25) is provided in each of the notches (24), and the bolt (25) is threadedly fitted with the threaded groove.

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