CN210738906U - Double-seal chemical process pump - Google Patents
Double-seal chemical process pump Download PDFInfo
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- CN210738906U CN210738906U CN201921035211.3U CN201921035211U CN210738906U CN 210738906 U CN210738906 U CN 210738906U CN 201921035211 U CN201921035211 U CN 201921035211U CN 210738906 U CN210738906 U CN 210738906U
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Abstract
The utility model discloses a chemical industry process pump of double containment belongs to pump technical field. The double-seal chemical process pump comprises a pump body, a pump cover, a suspension body, an impeller and a pump shaft, wherein the pump cover and the suspension body are sequentially arranged at one end of the pump body; one end of the pump shaft sequentially penetrates through the suspension body and the pump cover and extends into the impeller cavity to be fixedly connected with the impeller, a double-mechanical seal seat is arranged between the pump cover and the impeller, one end, far away from the impeller, of the double-mechanical seal seat is fixedly connected with a mechanical seal cover, a seal cavity is formed among the double-mechanical seal seat, the mechanical seal cover and the pump shaft, and a double-end seal assembly is arranged in the seal cavity and used for reducing the pollution to the external environment caused by the leakage of corrosive media in the pump. The utility model provides a pair of in the chemical industry process pump of double containment, for traditional single seal structure, the utility model provides a bi-polar seal assembly has better sealed effect, can effectively avoid the medium leakage in the pump, causes the harm to the environment.
Description
Technical Field
The utility model relates to a pump technical field, in particular to chemical industry process pump of double containment.
Background
In chemical or petrochemical production, the pump works under high-temperature, low-temperature or ultralow-temperature, high-pressure, inflammable, explosive, toxic and strong-corrosion media, the chemical process pump is also characterized by working under the conditions of high inlet pressure, high lift, high viscosity, small flow and high cavitation, and very strict requirements are put on the performance of the chemical pump, particularly extremely high requirements on corrosion resistance, no leakage and wear resistance.
The existing chemical process pump is required to meet the working condition requirements of different media, chemical pumps of different models are often required to be selected, and a plurality of part types are not beneficial to large-batch automatic production of parts.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a chemical industry process pump of double containment to when solving the different operating modes of current chemical industry process pump adaptation, need select the chemical industry process pump of different models, and the pump specification is of a great variety, is unfavorable for big automated production's in batches problem.
In order to solve the technical problem, the utility model provides a double containment chemical industry process pump, include:
the pump body is provided with a liquid inlet and a liquid outlet;
the pump cover and the suspension frame body are sequentially arranged at one end of the pump body; the suspension body is fixedly connected with the pump body through a bolt, and the pump cover is tightly pressed on the pump body;
the impeller is arranged in an impeller cavity between the pump body and the pump cover;
one end of the pump shaft sequentially penetrates through the suspension body and the pump cover, extends into the impeller cavity and is fixedly connected with the impeller;
the double-mechanical-seal pump is characterized in that a double-mechanical-seal seat is arranged between the pump cover and the impeller, one end, far away from the impeller, of the double-mechanical-seal seat is fixedly connected with a double-mechanical-seal cover, a seal cavity is formed among the double-mechanical-seal seat, the double-mechanical-seal cover and the pump shaft, and a double-end seal assembly is arranged in the seal cavity.
Optionally, the double-ended seal assembly comprises a primary seal assembly and a secondary seal assembly, wherein,
the primary seal assembly includes:
the first L-shaped sealing gasket is tightly attached to the double-machine sealing seat and sleeved on the outer surface of the pump shaft;
the first sealing static ring is sleeved on the outer surface of the pump shaft and is positioned between the first L-shaped sealing gasket and the pump shaft;
the first movable ring seat is sleeved on the outer surface of the pump shaft, and a first sealing movable ring and a first O-shaped ring are sequentially sleeved in the first movable ring seat;
the secondary seal assembly includes:
the second L-shaped sealing gasket is tightly attached to the mechanical sealing gland and sleeved on the outer surface of the pump shaft;
the second sealing static ring is sleeved on the outer surface of the pump shaft and is positioned between the second L-shaped sealing gasket and the pump shaft;
the second movable ring seat is sleeved on the outer surface of the pump shaft, and a second sealing movable ring and a second O-shaped ring are sequentially sleeved in the second movable ring seat;
the pump cover presses the movable ring seat on the back of the impeller through the double-machine seal seat, the L-shaped sealing gasket, the sealing static ring and the sealing movable ring in sequence.
Optionally, the mechanical seal gland is fixedly connected with the double mechanical seal seat through a bolt; the mechanical seal gland sequentially compresses the auxiliary seal assembly and the main seal assembly on the end faces of the double mechanical seal seats.
Optionally, a mouth ring is sleeved at a joint of the double mechanical seal seat and the back of the impeller, and is used for isolating the impeller cavity from the double mechanical seal seat.
Optionally, the pump shaft is sleeved in the suspension body through a first bearing and a second bearing respectively, one end of the suspension body close to the first bearing is fixedly connected with a first bearing gland, and one end of the suspension body close to the second bearing is fixedly connected with a second bearing gland.
Optionally, a liner plate is arranged between the pump body and the pump cover.
Optionally, the top end of the impeller is fixedly connected with an impeller nut.
Optionally, the pump cover is fixed on the end face of the double-machine seal seat through a bolt.
The utility model provides a pair of in double containment chemical industry process pump, the pump cover with be equipped with double-engine seal seat between the impeller, double-engine seal seat is kept away from the one end fixed connection of impeller has a gland lid, double-engine seal seat machine gland lid and form a sealed chamber between the pump shaft, be equipped with bi-polar seal assembly in the sealed chamber. Different combinations of the pump cover and the double-machine seal seat can adapt to the requirements of pumps of all models, greatly reduces the types of parts, improves the production efficiency and improves the flexibility of adapting products to different working conditions. For traditional single seal structure, the utility model provides a bi-polar seal assembly has better sealed effect, can effectively avoid the medium leakage in the pump, causes the harm to the environment.
Drawings
Fig. 1 is a schematic structural diagram of a double-sealed chemical process pump provided by the present invention;
FIG. 2 is a schematic diagram of a double-ended seal assembly.
Detailed Description
The double-sealed chemical process pump provided by the present invention is further described in detail with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more fully apparent from the following description and appended claims. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.
Example one
The utility model provides a double-sealed chemical process pump, as shown in figure 1, comprising a pump body 1, a pump cover 2, a suspension body 3, an impeller 4 and a pump shaft 5, in particular,
a liquid inlet 10 and a liquid outlet 11 are arranged on the pump body 1; the pump cover 2 and the suspension frame body 3 are sequentially arranged at one end of the pump body 1; a lining plate 12 is arranged between the pump body 1 and the pump cover 2; the suspension body 3 is fixedly connected with the pump body 1 through bolts, the pump cover 2 is tightly pressed on the pump body 1, and preferably, the pump cover 2 is fixed on the end face of the double-machine seal seat 6 through bolts; the impeller 4 is arranged in an impeller cavity between the pump body 1 and the pump cover 2; one end of the pump shaft 5 sequentially penetrates through the suspension body 3 and the pump cover 2 and extends into the impeller cavity to be fixedly connected with the impeller 4, and an impeller nut 40 is fixedly connected to the top end of the impeller 4 and used for locking the impeller 4 and meanwhile fitting the shape of a flow channel in the impeller, so that the hydraulic efficiency is improved. A double-machine seal seat 6 is arranged between the pump cover 2 and the impeller 4, one end of the double-machine seal seat 6, which is far away from the impeller 4, is fixedly connected with a machine seal cover 8, and a seal cavity 80 with pressure larger than a medium side is formed between the double-machine seal seat 6, the machine seal cover 8 and the pump shaft 5. A mouth ring (not shown in the figure) is sleeved at the joint of the double-machine seal seat 6 and the back of the impeller 4 and is used for isolating the impeller cavity from the double-machine seal seat 6 so as to isolate a high-pressure area formed by the impeller cavity from a low-pressure area formed by the double-machine seal seat 6.
The double-end sealing assembly 7 is arranged in the sealing cavity 80 to improve the sealing reliability. Referring specifically to fig. 2, the double-ended seal assembly 7 includes a primary seal assembly and a secondary seal assembly, wherein,
the primary seal assembly includes: the first L-shaped sealing gasket 70 is tightly attached to the double-machine sealing seat 6 and sleeved on the outer surface of the pump shaft 5; the first sealing static ring 71 is sleeved on the outer surface of the pump shaft 5 and is positioned between the first L-shaped sealing gasket 70 and the pump shaft 5; the first movable ring seat 72 is sleeved on the outer surface of the pump shaft 5, and a first sealing movable ring 73 and a first O-shaped ring 74 are sequentially sleeved in the first movable ring seat;
the secondary seal assembly includes: the second L-shaped sealing gasket 75 is tightly attached to the mechanical sealing cover 8 and sleeved on the outer surface of the pump shaft 5; a second stationary sealing ring 76 sleeved on the outer surface of the pump shaft 5 and located between the second L-shaped sealing pad 75 and the pump shaft 5; the second movable ring seat 77 is sleeved on the outer surface of the pump shaft 5, and a second sealing movable ring 78 and a second O-shaped ring 79 are sequentially sleeved in the second movable ring seat;
the pump cover 2 presses the moving ring seat 71 to the back of the impeller 4 sequentially through the double-machine seal seat 6, the L-shaped sealing gasket 70, the sealing static ring 74 and the sealing moving ring 72. The mechanical seal gland 8 is fixedly connected with the double mechanical seal seat 6 through bolts; the mechanical seal gland 8 sequentially compresses the auxiliary seal assembly and the main seal assembly on the end faces of the double mechanical seal seats 6. For traditional single seal structure, the utility model provides a bi-polar seal assembly 7 has better sealed effect, can effectively avoid the medium leakage in the pump, causes the harm to the environment. Different combinations of the pump cover 2 and the double-machine seal seat 6 can adapt to the requirements of pumps of all models, greatly reduces the types of parts, improves the production efficiency and improves the flexibility of adapting products to different working conditions.
The pump shaft 5 is respectively sleeved in the suspension body 3 through a first bearing 31 and a second bearing 32, and is used for supporting the pump shaft 5, so that the stability is improved. The suspension body 3 is close to the first bearing cover 33 of one end fixedly connected with of first bearing 31, the suspension body 3 is close to the second bearing cover 34 of one end fixedly connected with of second bearing 32.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and any modification and modification made by those skilled in the art according to the above disclosure are all within the scope of the claims.
Claims (8)
1. A double-sealed chemical process pump is characterized by comprising:
the pump comprises a pump body (1), wherein a liquid inlet (10) and a liquid outlet (11) are formed in the pump body (1);
the pump cover (2) and the suspension frame body (3) are sequentially arranged at one end of the pump body (1); the suspension body (3) is fixedly connected with the pump body (1) through a bolt, and the pump cover (2) is pressed on the pump body (1);
the impeller (4) is arranged in an impeller cavity between the pump body (1) and the pump cover (2);
one end of the pump shaft (5) sequentially penetrates through the suspension body (3) and the pump cover (2), extends into the impeller cavity and is fixedly connected with the impeller (4);
the pump cover (2) with be equipped with double-machine seal seat (6) between impeller (4), double-machine seal seat (6) are kept away from the one end fixed connection of impeller (4) has mechanical seal cover (8), double-machine seal seat (6) mechanical seal cover (8) and form a seal chamber (80) between pump shaft (5), be equipped with bi-polar seal assembly (7) in seal chamber (80).
2. Double sealed chemical process pump according to claim 1, wherein the double-ended seal assembly (7) comprises a primary seal assembly and a secondary seal assembly, wherein,
the primary seal assembly includes:
the first L-shaped sealing gasket (70) is tightly attached to the double-machine sealing seat (6) and sleeved on the outer surface of the pump shaft (5);
the first sealing static ring (71) is sleeved on the outer surface of the pump shaft (5) and is positioned between the first L-shaped sealing gasket (70) and the pump shaft (5);
the first movable ring seat (72) is sleeved on the outer surface of the pump shaft (5), and a first sealing movable ring (73) and a first O-shaped ring (74) are sequentially sleeved in the first movable ring seat;
the secondary seal assembly includes:
the second L-shaped sealing gasket (75) is tightly attached to the mechanical sealing gland (8) and sleeved on the outer surface of the pump shaft (5);
the second sealing static ring (76) is sleeved on the outer surface of the pump shaft (5) and is positioned between the second L-shaped sealing gasket (75) and the pump shaft (5);
the second movable ring seat (77) is sleeved on the outer surface of the pump shaft (5), and a second sealing movable ring (78) and a second O-shaped ring (79) are sequentially sleeved in the second movable ring seat;
the pump cover (2) is used for compressing the first sealing static ring (71) on the back face of the impeller (4) sequentially through the double-machine sealing seat (6), the L-shaped sealing gasket (70), the first O-shaped ring (74) and the first movable ring seat (72).
3. The dual-seal chemical process pump as claimed in claim 2, wherein the mechanical seal cover (8) is fixedly connected with the dual-mechanical seal holder (6) by bolts; the mechanical seal gland (8) sequentially compresses the auxiliary seal assembly and the main seal assembly on the end faces of the double mechanical seal seats (6).
4. The dual-seal chemical process pump as claimed in claim 1, wherein a mouth ring is sleeved at the joint of the dual-seal seat (6) and the back of the impeller (4) for isolating the impeller cavity from the dual-seal seat (6).
5. The dual-seal chemical process pump according to claim 1, wherein the pump shaft (5) is sleeved in the suspension body (3) through a first bearing (31) and a second bearing (32), the suspension body (3) has a first bearing cover (33) fixedly connected to an end close to the first bearing (31), and the suspension body (3) has a second bearing cover (34) fixedly connected to an end close to the second bearing (32).
6. Double-sealed chemical process pump according to claim 1, characterized in that a liner (12) is provided between the pump body (1) and the pump cover (2).
7. The dual sealed chemical process pump as claimed in claim 1, wherein the top end of the impeller (4) is fixedly connected with an impeller nut (40).
8. The dual-seal chemical process pump as claimed in claim 1, wherein the pump cover (2) is fixed to the end face of the dual-seal seat (6) by bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921035211.3U CN210738906U (en) | 2019-07-04 | 2019-07-04 | Double-seal chemical process pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921035211.3U CN210738906U (en) | 2019-07-04 | 2019-07-04 | Double-seal chemical process pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210738906U true CN210738906U (en) | 2020-06-12 |
Family
ID=71006126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921035211.3U Active CN210738906U (en) | 2019-07-04 | 2019-07-04 | Double-seal chemical process pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210738906U (en) |
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2019
- 2019-07-04 CN CN201921035211.3U patent/CN210738906U/en active Active
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