CN214499539U - Sealing device for pump shaft - Google Patents
Sealing device for pump shaft Download PDFInfo
- Publication number
- CN214499539U CN214499539U CN202120785752.9U CN202120785752U CN214499539U CN 214499539 U CN214499539 U CN 214499539U CN 202120785752 U CN202120785752 U CN 202120785752U CN 214499539 U CN214499539 U CN 214499539U
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- packing
- pump shaft
- pressure regulating
- connecting pipe
- plate
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Abstract
The utility model relates to a sealing device for pump shaft, the pump shaft comprises a pump shaft, the pump shaft on be provided with outer packing box, be provided with the packing on the outer packing box in the pump shaft outside and hold the groove, on be provided with the balance tube, balance tube and packing hold the groove and communicate mutually, the packing holds the inslot and is provided with the packing, be provided with pressure regulating plate on the pump shaft of one side of outer packing box, pressure regulating plate's inboard is provided with the packing clamping ring, the medial extremity suit packing of packing clamping ring hold the inslot and with packing swing joint, the cover is equipped with first fixed plate on the pump shaft of one side of pressure regulating plate, be provided with closing device between first fixed plate and the pressure regulating plate, closing device include lead screw, adjusting nut and connecting pipe. The number of packing replacement times is reduced, and the number of equipment parking maintenance times is further reduced. The utility model discloses adjust, convenient to use, have extensive market prospect.
Description
Technical Field
The utility model relates to a sealed field of pump shaft, concretely relates to a sealing device for pump shaft.
Background
The packing is also called sealing packing, and is usually formed by weaving softer threads, and strips with square or rectangular or round cross sections are usually filled in a sealing cavity to realize sealing. The stuffing seal is firstly to prevent the liquid flow from leaking by the fiber plug such as cotton and hemp in the leakage passage, and is mainly used as the shaft seal of the water lifting machine. The filler has wide sources, easy processing, low price, reliable sealing and simple operation, so the filler is continuously used up to now. Packing is now widely used in centrifugal pumps, compressors, vacuum pumps, shaft seals for blenders and marine propellers, piston pumps, reciprocating compressors, reciprocating shaft seals for refrigerators, rotary seals for valve stems of various valves, and the like.
Open the low-pressure pump of form all is that its packing is sealed in the present level, push down with the packing gland, should have a small amount of medium outflow between packing and the pivoted pump shaft in the normal operating, and discharge from the outlet of packing room, in order to guarantee that the packing can not burn out, play certain cooling and lubrication action, after the pump operation is for a certain time (about half a year), often the packing leaks the leakage volume and can the grow, all carry out usually when this to changing the packing, it is equipment parking to all accompany when changing the packing, influence production.
Disclosure of Invention
The utility model provides a not enough to prior art, the utility model provides a can reduce the packing and change the number of times and then reduce the sealing device for pump shaft of equipment parking maintenance number of times for overcome defect among the prior art.
The utility model adopts the technical proposal that: a sealing device for a pump shaft comprises a pump shaft, wherein an outer packing box is arranged on the pump shaft, a packing containing groove is formed in the outer packing box on the outer side of the pump shaft and is provided with a balance pipe, the balance pipe is communicated with the packing containing groove, a packing is arranged in the packing containing groove, a pressure adjusting plate is arranged on the pump shaft on one side of the outer packing box, a packing press ring is arranged on the inner side of the pressure adjusting plate, the inner side end of the packing press ring is sleeved in the packing containing groove and is movably connected with the packing, a first fixing plate is sleeved on the pump shaft on one side of the pressure adjusting plate, a pressing device is arranged between the first fixing plate and the pressure adjusting plate and comprises a lead screw, an adjusting nut and a connecting pipe, one end of the lead screw is connected with the pressure adjusting plate, the adjusting nut is arranged on the lead screw, the connecting pipe is arranged between the adjusting nut and the first fixing plate, one end of the lead screw is positioned in the connecting pipe, the connecting pipe is connected with the pressure adjusting plate.
Preferably, connecting pipe and adjusting nut adopt an organic whole structure, adjusting nut and lead screw threaded connection, the internal diameter of connecting pipe is not less than the diameter of lead screw, the peripheral shape of connecting pipe and adjusting nut's peripheral shape all are regular hexagon.
Preferably, the pressure adjusting plate is provided with a limiting hole, the pressing device further comprises a connecting protrusion and a limiting block, the connecting protrusion and the screw rod are of an integrated structure, the connecting protrusion is sleeved in the limiting hole, and the limiting block is fixedly sleeved on the screw rod on one side of the connecting protrusion.
Preferably, the inner side surface of the packing pressing ring is provided with a first sealing ring, and the outer side surface of the packing pressing ring is provided with a second sealing ring.
Preferably, the outer packing box is provided with a second fixing plate, and a fixing rod is arranged between the second fixing plate and the first fixing plate.
Preferably, the number of spacing hole adopt a plurality of, a plurality of spacing hole is even be the star and distribute on pressure regulating plate, closing device's quantity and the quantity in spacing hole corresponding.
The utility model has the advantages that: at first, closing device combine pressure regulating plate and packing clamping ring to compress tightly the packing of wearing and tearing once more and then reduce the leakage quantity of medium to reduce the packing and change the number of times and then reduce equipment parking maintenance number of times.
Secondly, the utility model discloses the product is in connecting pipe and adjusting nut adopt a body structure, adjusting nut and lead screw threaded connection, the internal diameter of connecting pipe is not less than the diameter of lead screw, the peripheral shape of connecting pipe and adjusting nut's peripheral shape all are regular hexagon. The distance between the adjusting nut and the pressure adjusting plate can be adjusted by utilizing existing tools such as a spanner conveniently.
And again, the utility model discloses connecting pipe and first fixed plate fixed connection, the periphery shape of stopper adopts regular hexagon, and the diameter of stopper circumscribed circle is not less than the diameter in spacing hole, and such orientation that does benefit to fixed lead screw that is provided with.
The utility model has the advantages of simple structure, convenient operation, design benefit has improved work efficiency greatly, has fine social and economic benefits, is the product of easily using widely.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a partially enlarged schematic view of detail a of fig. 1.
Fig. 3 is a schematic structural diagram of the components of the present invention.
Detailed Description
As shown in fig. 1, 2 and 3, a sealing device for a pump shaft comprises a pump shaft 1, wherein an outer packing box 2 is arranged on the pump shaft 1, a packing containing groove 3 is arranged on the outer packing box 2 at the outer side of the pump shaft 1, a balance tube 4 is arranged on the outer packing box, the balance tube 4 is communicated with the packing containing groove 3, a packing 5 is arranged in the packing containing groove 3, a pressure adjusting plate 6 is arranged on the pump shaft 1 at one side of the outer packing box 2, a packing press ring 7 is arranged at the inner side of the pressure adjusting plate 6, the inner side end of the packing press ring 7 is sleeved in the packing containing groove 3 and movably connected with the packing 5, a first fixing plate 8 is sleeved on the pump shaft 1 at one side of the pressure adjusting plate 6, a pressing device is arranged between the first fixing plate 8 and the pressure adjusting plate 6, the pressing device comprises a lead screw 9, an adjusting nut 10 and a connecting pipe 11, one end of the lead screw 9 is connected with the pressure adjusting plate 6, adjusting nut 10 is installed on lead screw 9, and connecting pipe 11 is installed between adjusting nut 10 and first fixed plate 8, and the one end of lead screw 9 is located connecting pipe 11, and connecting pipe 11 is connected with pressure regulating plate 6.
Meanwhile, in order to fix the first fixing plate 8 conveniently, the outer packing box 2 is provided with a second fixing plate 17, the second fixing plate 17 is parallel to the first fixing plate 8, the first fixing plate 8 is parallel to the pressure adjusting plate 6, and the second fixing plate 17 and the first fixing plate 8 are fixed through a fixing rod 18. The number of the fixing rods 18 is a plurality, and the fixing rods 18 are uniformly distributed on the first fixing plate 8 in a star shape.
Simultaneously for the convenient distance between current instrument regulation adjusting nut 10 such as spanner and the pressure regulating plate 6 that utilizes, and then conveniently compress tightly packing 5, this product is in connecting pipe 11 and adjusting nut 10 adopt an organic whole structure, adjusting nut 10 and lead screw 9 threaded connection, the internal diameter of connecting pipe 11 is not less than lead screw 9's diameter, the peripheral shape of connecting pipe 11 and adjusting nut 10's peripheral shape all are regular hexagon. With an existing tool such as a wrench, the adjusting nut 10 or the connecting pipe 11 is screwed to drive the screw shaft 9 to move toward the pressure-adjusting plate 6.
Simultaneously for the convenience in the position of the fixed lead screw 9 of pressure regulating plate 6, this product is in pressure regulating plate 6 on be provided with spacing hole 12, closing device still including connecting protrusion 13 and stopper 14, the diameter of connecting protrusion 13 and the aperture of spacing hole 12 cooperate, connecting protrusion 13 and lead screw 9 adopt an organic whole structure, connecting protrusion 13 suit is in spacing hole 12, stopper 14 fixed suit is on the lead screw 9 of connecting protrusion 13 one side. Connecting pipe 11 and 8 fixed connection of first fixed plate or connecting pipe 11 and 8 swing joint of first fixed plate, when adopting fixed connection's mode between connecting pipe 11 and the first fixed plate 8, regular hexagon is adopted to stopper 14's periphery shape, and the diameter of stopper 14 circumcircle is not less than the diameter of spacing hole 12, and such setting does benefit to the orientation of fixed lead screw 9. Further, in order to maintain the parallel installation position relationship between the first fixing plate 8 and the pressure adjusting plate 6, a plurality of limiting holes 12 are adopted, the plurality of limiting holes 12 are uniformly distributed on the pressure adjusting plate 6 in a star shape, and the number of the pressing devices corresponds to the number of the limiting holes 12. The installation position for keeping the first fixing plate 8 and the pressure adjusting plate 6 in parallel is achieved by adjusting a plurality of the pressing devices in sequence.
In order to prevent the medium from holding the seepage between groove 3 and the packing clamping ring 7 and between packing clamping ring 7 and the pump shaft 1 from the packing, this product is in the medial surface of packing clamping ring 7 on be provided with first sealing ring 15, be provided with second sealing ring 16 on the lateral surface of packing clamping ring 7. The packing clamping ring 7 is of a tubular structure, and the second sealing ring 16 and the first sealing ring 15 are of tubular structures made of rubber. And the second sealing ring 16 and the packing pressing ring 7 and the first sealing ring 15 are fixedly connected in a bonding mode respectively.
The use method of the product is as follows: as shown in fig. 1, 2, 3, the increase of leakage quantity of medium after the pump operation of this product of installation to a certain time, twist in proper order through combining measuring workers such as ruler and move a plurality of stopper 14 or a plurality of adjusting nut 10 and then revolve to pressure regulating plate 6 one side with lead screw 9 in the connecting pipe 11, thereby stopper 14 drive pressure regulating plate 6 towards outside packing box 2 and then drive packing clamping ring 7 and do corresponding motion and compress tightly packing 5, thereby hold groove 3 with packing and seal from newly utilizing packing 5.
Through the embodiment, realized through closing device combine pressure regulating plate 6 and packing clamping ring 7 to compress tightly the packing 5 of wearing and tearing once more and then reduce the leakage quantity of medium to reduce packing 5 and change the number of times and then reduce equipment parking maintenance number of times.
The utility model discloses a satisfy a sealing device for pump shaft that needs in the sealed field worker of pump shaft, make the utility model discloses extensive market prospect has.
Claims (6)
1. A sealing arrangement for a pump shaft, comprising a pump shaft (1), characterized in that: the pump shaft (1) is provided with an outer packing box (2), the outer packing box (2) on the outer side of the pump shaft (1) is provided with a packing containing groove (3) which is provided with a balance pipe (4), the balance pipe (4) is communicated with the packing containing groove (3), a packing (5) is arranged in the packing containing groove (3), the pump shaft (1) on one side of the outer packing box (2) is provided with a pressure regulating plate (6), the inner side of the pressure regulating plate (6) is provided with a packing clamping ring (7), the inner side end of the packing clamping ring (7) is sleeved in the packing containing groove (3) and is movably connected with the packing (5), the pump shaft (1) on one side of the pressure regulating plate (6) is sleeved with a first fixing plate (8), a pressing device is arranged between the first fixing plate (8) and the pressure regulating plate (6), the pressing device comprises a lead screw (9), an adjusting nut (10) and a connecting pipe (11), one end of a screw rod (9) is connected with a pressure adjusting plate (6), an adjusting nut (10) is installed on the screw rod (9), a connecting pipe (11) is installed between the adjusting nut (10) and a first fixing plate (8), one end of the screw rod (9) is located in the connecting pipe (11), and the connecting pipe (11) is connected with the pressure adjusting plate (6).
2. The sealing arrangement for a pump shaft of claim 1, wherein: connecting pipe (11) and adjusting nut (10) adopt an organic whole structure, adjusting nut (10) and lead screw (9) threaded connection, the internal diameter of connecting pipe (11) is not less than the diameter of lead screw (9), the peripheral shape of connecting pipe (11) and the peripheral shape of adjusting nut (10) all are regular hexagon.
3. The sealing arrangement for a pump shaft of claim 1, wherein: pressure regulating plate (6) on be provided with spacing hole (12), closing device still including connecting arch (13) and stopper (14), connecting arch (13) and lead screw (9) adopt an organic whole structure, connect protruding (13) suit in spacing hole (12), stopper (14) fixed suit is on connecting lead screw (9) of protruding (13) one side.
4. The sealing arrangement for a pump shaft of claim 1, wherein: the packing ring is characterized in that a first sealing ring (15) is arranged on the inner side face of the packing ring (7), and a second sealing ring (16) is arranged on the outer side face of the packing ring (7).
5. The sealing arrangement for a pump shaft of claim 1, wherein: the outer packing box (2) is provided with a second fixing plate (17), and a fixing rod (18) is arranged between the second fixing plate (17) and the first fixing plate (8).
6. The sealing arrangement for a pump shaft of claim 3, wherein: the quantity of spacing hole (12) adopt a plurality of, the even star that is of a plurality of spacing hole (12) distributes on pressure regulating plate (6), closing device's quantity and the quantity of spacing hole (12) corresponding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120785752.9U CN214499539U (en) | 2021-04-16 | 2021-04-16 | Sealing device for pump shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120785752.9U CN214499539U (en) | 2021-04-16 | 2021-04-16 | Sealing device for pump shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214499539U true CN214499539U (en) | 2021-10-26 |
Family
ID=78203547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120785752.9U Active CN214499539U (en) | 2021-04-16 | 2021-04-16 | Sealing device for pump shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214499539U (en) |
-
2021
- 2021-04-16 CN CN202120785752.9U patent/CN214499539U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |