Mechanical sealing device for pump

Abstract

The mechanical sealing device for the pump comprises a pump body and a pipeline, one end of a sealing pipe is inserted into an insertion channel, and one end of an insertion pipe abuts against the side portion of a second sealing gasket; through the design of structures such as an inserting pipe, a sealing pipe, a first sealing gasket, a baffle ring and a second sealing gasket, after a pump connecting pipe and a pipeline are fixed in a butt joint mode through a fixing mechanism, the sealing pipe can be inserted into an inserting channel, the first sealing gasket can expand due to extrusion, and the first sealing gasket can be tightly attached to the inserting pipe; the plug-in pipe can abut against the first sealing gasket on the side portion of the baffle ring, so that the contact position of the plug-in pipe and the sealing pipe can be sealed, meanwhile, the plug-in pipe can abut against the second sealing gasket on the side portion of the baffle ring, and the contact position of the plug-in pipe and the sealing pipe can be sealed again through the second sealing gasket. Therefore, the sealing effect of the joint between the pump body and the pipeline can be improved, and the situation that the sealing performance of the joint between the pipeline and the pump body is insufficient is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a sealed connection device technical field, specifically is a pump mechanical sealing device. BACKGROUND

[0002] Pump is the fluid and makes fluid pressure increasing mechanical, it will prime mover mechanical energy and other external energy transmits to liquid, makes liquid energy increase, pump is mainly used to transport water, oil, acid and alkali liquid, emulsion, suspension emulsion and liquid metal liquid, also can transport liquid, gas mixture and contain the liquid of suspended solid.

[0003] At present, the connecting place between the existing pump body and pipeline is insufficient in sealing, and the insufficient sealing will lead to the leakage of the transported liquid, thereby reducing the working efficiency of the pump, the leaked liquid means that the pump needs to consume more energy to make up for the leaked part, which not only increases the energy consumption, but also makes the pump unable to achieve the expected conveying effect, therefore we need to put forward a pump mechanical sealing device. UTILITY MODEL CONTENT

[0004] The utility model discloses a pump mechanical sealing device, the position of the contact of the plug-in pipe and the sealing pipe is sealed for many times, so that the sealing effect of the connecting place between the pump body and the pipeline can be improved, and the sealing of the connecting place between the pipeline and the pump body is avoided, to solve the problems in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A pump mechanical sealing device, including pump body and pipeline, the surface of the pump connecting pipe is fixedly connected with first flange, the surface of the pipeline is fixedly connected with second flane, the pump connecting pipe is provided with fixing mechanism, the pump connecting pipe is fixedly installed on the pipeline through the cooperation of fixing mechanism, first flange and second flange;

[0007] The inner wall of the pump connecting pipe is fixedly connected with the plug-in pipe, the plug-in pipe and the inner wall of the pump connecting pipe are left with the plug-in channel, the inner wall of the pipeline is fixedly connected with the sealing tube, one end of the sealing tube is inserted into the plug-in channel, the inner wall of one end of the sealing tube is provided with the inclined part, the inclined part is provided with the first sealing pad, the first sealing pad is tightly pressed on the surface of the plug-in pipe, the inner wall of the sealing tube is fixedly connected with the baffle ring, the side of the baffle ring is provided with the second sealing pad, one end of the plug-in pipe is tightly pressed on the side of the second sealing pad.

[0008] Preferably, the plug-in pipe is set as a horn shape, the surface of the plug-in pipe is in contact with the inner wall of the sealing tube, and the surface of the sealing tube is in contact with the inner wall of the pump connecting pipe.

[0009] Preferably, a third sealing gasket is arranged between the first flange and the second flange.

[0010] Preferably, the fixing mechanism comprises a fixing ring, a screw rod, a gear, a fixing sleeve, an adjusting sleeve, a tooth, a gasket and a pressing block, the fixing ring is fixedly connected to the surface of the pump connecting pipe, the side of the fixing ring is in contact with the side of the first flange, the screw rod is threadedly installed in the fixing ring, the gasket is arranged on the side of the second flange, the end of the screw rod penetrates through the first flange, the second flange and the gasket, the pressing block is arranged in an annular array on the screw rod, and the side of the pressing block is tightly pressed against the surface of the gasket.

[0011] Preferably, the fixing sleeve is fixedly connected to the side of the fixing ring, the fixing sleeve is sleeved on the pump connecting pipe, the adjusting sleeve is movably installed on the fixing sleeve, the gear is fixedly connected to the end of the screw rod, the tooth is arranged on the inner wall of the adjusting sleeve, and the gear is engaged with the tooth.

[0012] Preferably, a plurality of accommodation grooves for accommodating the pressing blocks are formed in the screw rod, and the pressing blocks are hingedly connected in the accommodation grooves.

[0013] Preferably, the side of the pressing block is in contact with the inner wall of the accommodation groove.

[0014] Compared with the prior art, the pump connecting pipe and the pipeline are fixedly connected through the fixing mechanism, the sealing pipe can be inserted into the insertion channel, the first sealing gasket can be tightly attached to the insertion pipe through expansion, the position where the insertion pipe and the sealing pipe are in contact can be sealed, the insertion pipe can be tightly pressed against the second sealing gasket on the side of the blocking ring, the position where the insertion pipe and the sealing pipe are in contact can be sealed again through the second sealing gasket, the sealing effect of the connection between the pump body and the pipeline can be improved, and the sealing performance of the connection between the pipeline and the pump body is improved.

[0015] Through the design of the insertion pipe, the sealing pipe, the first sealing gasket, the blocking ring and the second sealing gasket, after the pump connecting pipe and the pipeline are fixedly connected through the fixing mechanism, the sealing pipe can be inserted into the insertion channel, the first sealing gasket can be tightly attached to the insertion pipe through expansion, the position where the insertion pipe and the sealing pipe are in contact can be sealed, the insertion pipe can be tightly pressed against the second sealing gasket on the side of the blocking ring, the position where the insertion pipe and the sealing pipe are in contact can be sealed again through the second sealing gasket, the sealing effect of the connection between the pump body and the pipeline can be improved, and the sealing performance of the connection between the pipeline and the pump body is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The structure of the utility model is shown in the figure;

[0017] Figure 2 The sectional structure of the pump connecting pipe, the pipeline, the fixing ring and the adjusting sleeve of the utility model is shown in the figure;

[0018] Figure 3 The sectional structure of the pump connecting pipe and the pipeline of the utility model is shown in the figure;

[0019] Figure 4The utility model discloses a fixed ring, screw rod and abutting block structure schematic diagram;

[0020] Figure 5 The utility model discloses a partial screw section view structure schematic diagram;

[0021] Figure 6 The utility model discloses Figure 2 The structure schematic diagram of enlarged A area in middle.

[0022] In the drawing: 1, pump body;2, pump connecting pipe;3, pipeline;4, plug-in pipe;5, sealing pipe;6, plug-in channel;7, first sealing gasket;8, baffle ring;9, second sealing gasket;10, first flange;11, second flange;12, third sealing gasket;13, fixed ring;14, screw rod;15, gear;16, fixed sleeve;17, adjusting sleeve;18, gear tooth;19, gasket;20, abutting block;21, storage groove. Specific implementation

[0023] The technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the range of protection of the utility model.

[0024] Please refer to Figures 1-6 The utility model provides a technical scheme:

[0025] A kind of mechanical sealing device for pump, including pump body 1 and pipeline 3, pump body 1 is connected with pump connecting pipe 2, the surface of pump connecting pipe 2 is fixedly connected with first flange 10, the surface of pipeline 3 is fixedly connected with second flange 11, fixed mechanism is arranged on pump connecting pipe 2, pump connecting pipe 2 is fixedly installed on pipeline 3 by fixed mechanism cooperation first flange 10 and second flange 11;

[0026] The inner wall of pump connecting pipe 2 is fixedly connected with plug-in pipe 4, and the inner wall of pump connecting pipe 2 is left with plug-in channel 6 between plug-in pipe 4, the inner wall of pipeline 3 is fixedly connected with sealing pipe 5, one end of sealing pipe 5 is inserted in plug-in channel 6, the inner wall of one end of sealing pipe 5 is provided with inclined part, first sealing gasket 7 is arranged on inclined part, first sealing gasket 7 is abutted on the surface of plug-in pipe 4, the inner wall of sealing pipe 5 is fixedly connected with baffle ring 8, the side portion of baffle ring 8 is provided with second sealing gasket 9, and one end of plug-in pipe 4 is abutted on the side portion of second sealing gasket 9.

[0027] In an alternative embodiment: plug-in pipe 4 is arranged in a trumpet shape, the surface of plug-in pipe 4 is in contact with the inner wall of sealing pipe 5, and the surface of sealing pipe 5 is in contact with the inner wall of pump connecting pipe 2.

[0028] In an optional embodiment, the third sealing gasket 12 is arranged between the first flange 10 and the second flange 11.

[0029] It should be noted that the third sealing gasket 12 is arranged to seal the pump connecting pipe 2 and the pipeline 3, thereby improving the sealing performance of the connection between the pump connecting pipe 2 and the pipeline 3.

[0030] In an optional embodiment, the fixing mechanism includes a fixing ring 13, a screw rod 14, a gear 15, a fixing sleeve 16, an adjusting sleeve 17, a tooth 18, a gasket 19, and a pressing block 20. The fixing ring 13 is fixedly connected to the surface of the pump connecting pipe 2, and the side of the fixing ring 13 is in contact with the side of the first flange 10. The screw rod 14 is threadedly installed in the fixing ring 13. The gasket 19 is arranged on the side of the second flange 11. The end of the screw rod 14 penetrates the first flange 10, the second flange 11, and the gasket 19. The pressing block 20 is arranged in an annular array on the screw rod 14, and the side of the pressing block 20 is tightly pressed against the surface of the gasket 19.

[0031] It should be noted that the fixing ring 13, the screw rod 14, the gear 15, the fixing sleeve 16, the adjusting sleeve 17, the tooth 18, the gasket 19, and the pressing block 20 cooperate to enable the pressing block 20 to be tightly pressed against the gasket 19, thereby fixing the pump connecting pipe 2 and the pipeline 3.

[0032] In an optional embodiment, the fixing sleeve 16 is fixedly connected to the side of the fixing ring 13 and is sleeved on the pump connecting pipe 2. The adjusting sleeve 17 is movably installed on the fixing sleeve 16. The gear 15 is fixedly connected to the end of the screw rod 14. The tooth 18 is arranged on the inner wall of the adjusting sleeve 17. The gear 15 is engaged with the tooth 18.

[0033] It should be noted that when the adjusting sleeve 17 rotates to drive the screw rod 14 to rotate in the fixing ring 13, the gear 15 can move in the adjusting sleeve 17 through the tooth 18.

[0034] In an optional embodiment, a plurality of receiving grooves 21 for receiving the pressing block 20 are formed in the screw rod 14. The pressing block 20 is dampingly hinged in the receiving groove 21.

[0035] It should be noted that the receiving groove 21 is arranged to receive the pressing block 20, which facilitates the penetration of the screw rod 14 through the first flange 10, the second flange 11, and the gasket 19.

[0036] In addition, the pressing block 20 is dampingly hinged in the receiving groove 21, thereby preventing the pressing block 20 from rotating randomly in the receiving groove 21 and affecting the extraction of the screw rod 14 from the first flange 10, the second flange 11, and the gasket 19.

[0037] In an alternative embodiment: the side of the abutting block 20 is in contact with the inner wall of the receiving groove 21.

[0038] It should be noted that the abutting block 20 is fixed by being in contact with the inner wall of the receiving groove 21, so that the abutting block 20 is prevented from rotating again, thereby affecting the fixing of the pump connecting pipe 2 and the pipeline 3 by the abutting block 20.

[0039] In specific use, the end of the pump connecting pipe 2 and the pipeline 3 are aligned, the pump body 1 is moved, the screw rod 14 penetrates through the first flange 10, the second flange 11 and the gasket 19, at this time the sealing pipe 5 is inserted into the insertion channel 6, the first sealing gasket 7 is in contact with the surface of the insertion pipe 4, the end of the insertion pipe 4 is in contact with the second sealing gasket 9, the abutting block 20 is unfolded on the screw rod 14, the adjusting sleeve 17 is rotated, the gear 15 is rotated by the wheel teeth 18, the screw rod 14 is rotated and moved in the fixed ring 13, the abutting block 20 is close to the gasket 19, and the abutting block 20 is abutted on the gasket 19, so that the pump connecting pipe 2 and the pipeline 3 are fixed.

[0040] When the pump connecting pipe 2 and the pipeline 3 are fixed, the first sealing gasket 7 is expanded and pressed on the surface of the insertion pipe 4, so that the position of the insertion pipe 4 in contact with the sealing pipe 5 is sealed, and the insertion pipe 4 is abutted on the second sealing gasket 9 on the side of the blocking ring 8, the position of the insertion pipe 4 in contact with the sealing pipe 5 is sealed again by the second sealing gasket 9, and the first flange 10 and the second flange 11 press the third sealing gasket 12, so that the connection between the pump connecting pipe 2 and the pipeline 3 is sealed again, and the connection between the pump connecting pipe 2 and the pipeline 3 is sealed several times, thereby improving the sealing performance of the connection between the pump connecting pipe 2 and the pipeline 3.

[0041] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A mechanical seal device for a pump comprising a pump body (1) and a pipe (3), characterized in that: The pump body (1) is communicated with a pump connecting pipe (2), the surface of the pump connecting pipe (2) is fixedly connected with a first flange (10), the surface of the pipeline (3) is fixedly connected with a second flange (11), the pump connecting pipe (2) is provided with a fixing mechanism, and the pump connecting pipe (2) is fixedly installed on the pipeline (3) by cooperating the first flange (10) and the second flange (11) through the fixing mechanism. The inner wall of the pump connecting pipe (2) is fixedly connected with a plug-in pipe (4), a plug-in channel (6) is left between the plug-in pipe (4) and the inner wall of the pump connecting pipe (2), the inner wall of the pipeline (3) is fixedly connected with a sealing pipe (5), one end of the sealing pipe (5) is plugged into the plug-in channel (6), the inner wall of one end of the sealing pipe (5) is provided with an inclined portion, the inclined portion is provided with a first sealing gasket (7), the first sealing gasket (7) is tightly pressed against the surface of the plug-in pipe (4), the inner wall of the sealing pipe (5) is fixedly connected with a stop ring (8), the side of the stop ring (8) is provided with a second sealing gasket (9), and one end of the plug-in pipe (4) is tightly pressed against the side of the second sealing gasket (9).

2. A mechanical seal assembly for a pump as defined in claim 1, wherein: The plug-in pipe (4) is arranged in a trumpet shape, the surface of the plug-in pipe (4) is in contact with the inner wall of the sealing pipe (5), and the surface of the sealing pipe (5) is in contact with the inner wall of the pump connecting pipe (2).

3. A mechanical seal assembly for a pump as defined in claim 1, wherein: The first flange (10) and the second flange (11) are provided with a third sealing gasket (12).

4. A mechanical seal assembly for a pump as defined in claim 1, wherein: The fixing mechanism comprises a fixing ring (13), a screw rod (14), a gear (15), a fixing sleeve (16), an adjusting sleeve (17), a tooth (18), a gasket (19) and a tightly-pressed block (20), the fixing ring (13) is fixedly connected to the surface of the pump connecting pipe (2), the side of the fixing ring (13) is in contact with the side of the first flange (10), the screw rod (14) is threadedly installed in the fixing ring (13), the gasket (19) is arranged on the side of the second flange (11), the end of the screw rod (14) penetrates through the first flange (10), the second flange (11) and the gasket (19), and the tightly-pressed block (20) is arranged in an annular array on the screw rod (14), and the side of the tightly-pressed block (20) is tightly pressed against the surface of the gasket (19).

5. A mechanical seal assembly for a pump as defined in claim 4, wherein: The fixing sleeve (16) is fixedly connected to the side of the fixing ring (13), the fixing sleeve (16) is sleeved on the pump connecting pipe (2), the adjusting sleeve (17) is movably installed on the fixing sleeve (16), the gear (15) is fixedly connected to the end of the screw rod (14), the tooth (18) is arranged on the inner wall of the adjusting sleeve (17), and the gear (15) is engaged with the tooth (18).

6. A mechanical seal assembly for a pump as defined in claim 5, wherein: A plurality of accommodation grooves (21) for accommodating the tightly-pressed block (20) are formed in the screw rod (14), and the tightly-pressed block (20) is hingedly connected in the accommodation groove (21).

7. A mechanical seal assembly for a pump as defined in claim 6, wherein: The side of the tightly-pressed block (20) is in contact with the inner wall of the accommodation groove (21).

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