CN215333591U - Slurry pump with sealing pressure self-balancing device - Google Patents
Slurry pump with sealing pressure self-balancing device Download PDFInfo
- Publication number
- CN215333591U CN215333591U CN202121169990.3U CN202121169990U CN215333591U CN 215333591 U CN215333591 U CN 215333591U CN 202121169990 U CN202121169990 U CN 202121169990U CN 215333591 U CN215333591 U CN 215333591U
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- Prior art keywords
- balance cylinder
- pressure
- pump
- slurry pump
- sealing
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- Expired - Fee Related
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- 238000007789 sealing Methods 0.000 title claims abstract description 32
- 239000002002 slurry Substances 0.000 title claims abstract description 28
- 239000000498 cooling water Substances 0.000 claims abstract description 21
- 239000013049 sediment Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a slurry pump with a sealing pressure self-balancing device, which comprises a slurry pump body, an outlet short pipe, a balance cylinder and a machine seal cooling water tank, wherein the top end of the slurry pump body is provided with the outlet short pipe, one side of the outlet short pipe is provided with a communicating pipe A, the outlet short pipe is connected with the balance cylinder through the communicating pipe A, a piston is arranged in the balance cylinder, one end of the balance cylinder, which is far away from the outlet short pipe, is provided with a communicating pipe B, and the balance cylinder is connected with the machine seal cooling water tank through the communicating pipe B. The utility model has the advantages that the pressure in the sealing cavity is automatically transmitted to the mechanical sealing working cavity by the piston of the balance cylinder and utilizing the outlet pressure of the water pump, the pressure in the sealing cavity automatically changes along with the working pressure of the pump, and the working pressure of the pump is always kept slightly higher than the working pressure of the pump, so that the sealing reliability is ensured.
Description
Technical Field
The utility model relates to the technical field of slurry pumps, in particular to a slurry pump with a sealing pressure self-balancing device.
Background
The slurry pump is a device for increasing the energy of solid and liquid mixed media and conveying the solid and liquid mixed media by means of the action of centrifugal force, in the building foundation construction, the slurry pump is mainly used for conveying waste slurry produced in the construction, in the slurry pump adopting pressure double sealing, in order to ensure the sealing reliability, two methods are provided at present, namely, the slurry pump is externally connected, before the slurry pump is started, the booster pump is started firstly, when the pressure in a sealing cavity is slightly larger than the rated working pressure of the pump, the slurry pump is started again, the device investment is large, the operation is troublesome, and meanwhile, a certain power is consumed by additionally adding the pump. And an auxiliary impeller is additionally arranged on the slurry pump, so that the requirement of mechanical seal on sealing pressure is reduced, the service life of the mechanical seal is relatively short, the energy consumption is increased, and the efficiency of the water pump is reduced. In addition to increasing the equipment cost, the two methods also consume extra power, so that the efficiency of the unit is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a slurry pump with a sealing pressure self-balancing device, which has the advantages that the pressure in a sealing cavity is automatically transmitted to a mechanical seal working cavity by using the outlet pressure of a water pump through a piston of a balancing cylinder, the pressure in the sealing cavity automatically changes along with the working pressure of the pump and always keeps slightly larger than the working pressure of the pump, so that the sealing reliability is ensured. And an auxiliary impeller is additionally arranged on the slurry pump, so that the requirement of mechanical seal on sealing pressure is reduced, the service life of the mechanical seal is relatively short, the energy consumption is increased, and the efficiency of the water pump is reduced. The two methods not only increase the equipment cost, but also consume extra power, so that the efficiency of the unit is reduced.
In order to achieve the purpose, the utility model provides the following technical scheme:
the utility model provides a sediment stuff pump with sealing pressure self-balancing unit, includes sediment stuff pump body, export nozzle stub, balance cylinder and machine seal cooling water tank, the top of sediment stuff pump body is equipped with the export nozzle stub, one side of export nozzle stub is equipped with the closed tube A, the export nozzle stub is connected with the balance cylinder through closed tube A, be equipped with the piston in the balance cylinder, the one end that the balance cylinder deviates from the export nozzle stub is equipped with closed tube B, the balance cylinder has machine seal cooling water tank through closed tube B connection.
Preferably, both ends of the balance cylinder are respectively provided with a side cover A and a side cover B, and the communicating pipe A and the communicating pipe B are respectively communicated with the side cover A and the side cover B.
Preferably, an O-shaped sealing ring is arranged between the two sides of the piston and the balance cylinder.
Preferably, the machine seal cooling water tank is communicated with a machine seal cavity of the slurry pump body.
Preferably, the outlet short pipe and the machine seal cooling water tank are communicated through a balance cylinder.
Compared with the prior art, the utility model has the beneficial effects that: through setting up the balance cylinder, through the piston of balance cylinder, with pressure automatic transfer to machine seal cooling water tank and machine seal intracavity, make the machine seal intracavity remain certain pressure throughout, realize having the demand of pressure double containment to sealing pressure, improve the life of machine seal to pressure in the seal chamber is according to water pump working pressure automatic change.
Drawings
Fig. 1 is a schematic front view of the present invention.
In the figure: 1. a slurry pump body; 2. an outlet short pipe; 3. communicating a pipe A; 4. a side cover A; 5. a balancing cylinder; 6. a piston; 7. a side cover B; 8. a communicating pipe B; 9. and (4) a mechanical seal cooling water tank.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, an embodiment of the present invention:
the utility model provides a sediment stuff pump with sealing pressure self-balancing unit, includes sediment stuff pump body 1, export nozzle stub 2, balance cylinder 5 and mechanical seal cooling water tank 9, the top of sediment stuff pump body 1 is equipped with export nozzle stub 2, export nozzle stub 2 and mechanical seal cooling water tank 9 are through 5 intercommunications of balance cylinder, one side of export nozzle stub 2 is equipped with through pipe A3, export nozzle stub 2 is connected with balance cylinder 5 through pipe A3, the both ends of balance cylinder 5 are equipped with side cap A4 and side cap B7 respectively.
The first 3 and the second 8 of closed tube communicate with first 4 and side cap second 7 respectively, be equipped with piston 6 in the balance cylinder 5, piston 6 through balance cylinder 5, with the automatic machine of transmitting pressure seal cooling water tank 9 and the machine seal intracavity, make the machine seal intracavity remain certain pressure throughout, realize having the demand of pressure double seal to sealing pressure, improve the life of machine seal, and the pressure is according to water pump operating pressure automatic change in the seal cavity, be equipped with O shape sealing washer between the both sides of piston 6 and the balance cylinder 5, the one end that the balance cylinder 5 deviates from export nozzle stub 2 is equipped with closed tube second 8, balance cylinder 5 is connected with machine seal cooling water tank 9 through closed tube second 8, machine seal cooling water tank 9 communicates with the machine seal cavity of sediment stuff pump body 1.
The working principle is as follows: the top end of a slurry pump body 1 is provided with an outlet short pipe 2, the outlet short pipe 2 is connected with a balance cylinder 5 through a communicating pipe A3, a piston 6 is arranged in the balance cylinder 5, pressure is automatically transmitted to a machine seal cooling water tank 9 and a machine seal cavity through the piston 6 of the balance cylinder 5, before the slurry pump works, the machine seal cooling water tank 9 is filled with clean liquid, when the slurry pump works normally, working medium with pressure at the outlet of the pump enters the left side of the balance cylinder 5 through the communicating pipe A3 between the outlet short pipe 2 and a side cover A4 of the balance cylinder 5 to push the piston 6 to move towards the right side for a certain distance, so that the pressure of the cooling medium in the machine seal cooling water tank 9 is increased, because the area of the right side of the piston 6 is smaller than the area of the left side, the pressure in the machine seal cooling water tank 9 can be ensured to be larger than the pressure at the rear part of an impeller, the requirement of sealing on the pressure in the machine seal cavity is met, and the piston 6 automatically floats in the working process of the slurry pump, the pressure between the mechanical seal cavity and the pump cavity is automatically balanced, so that a certain pressure is always kept in the mechanical seal cavity, the requirement of pressure double sealing on the sealing pressure is met, the service life of the mechanical seal is prolonged, and the pressure in the mechanical seal cavity is automatically changed according to the working pressure of the water pump.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (5)
1. The utility model provides a sediment stuff pump with sealing pressure self-balancing unit, includes sediment stuff pump body (1), export nozzle stub (2), balanced jar (5) and mechanical seal cooling water tank (9), its characterized in that: the top of sediment stuff pump body (1) is equipped with export nozzle stub (2), one side of export nozzle stub (2) is equipped with closed tube first (3), export nozzle stub (2) is connected with balance cylinder (5) through closed tube first (3), be equipped with piston (6) in balance cylinder (5), the one end that deviates from export nozzle stub (2) in balance cylinder (5) is equipped with closed tube second (8), balance cylinder (5) are connected with mechanical seal cooling water tank (9) through closed tube second (8).
2. The slurry pump with the sealing pressure self-balancing device of claim 1, wherein: the two ends of the balance cylinder (5) are respectively provided with a side cover A (4) and a side cover B (7), and the communicating pipe A (3) and the communicating pipe B (8) are respectively communicated with the side cover A (4) and the side cover B (7).
3. The slurry pump with the sealing pressure self-balancing device of claim 1, wherein: o-shaped sealing rings are arranged between the two sides of the piston (6) and the balance cylinder (5).
4. The slurry pump with the sealing pressure self-balancing device of claim 1, wherein: and the mechanical seal cooling water tank (9) is communicated with a mechanical seal cavity of the slurry pump body (1).
5. The slurry pump with the sealing pressure self-balancing device of claim 1, wherein: the outlet short pipe (2) is communicated with the mechanical seal cooling water tank (9) through a balance cylinder (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121169990.3U CN215333591U (en) | 2021-05-28 | 2021-05-28 | Slurry pump with sealing pressure self-balancing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121169990.3U CN215333591U (en) | 2021-05-28 | 2021-05-28 | Slurry pump with sealing pressure self-balancing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215333591U true CN215333591U (en) | 2021-12-28 |
Family
ID=79548842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121169990.3U Expired - Fee Related CN215333591U (en) | 2021-05-28 | 2021-05-28 | Slurry pump with sealing pressure self-balancing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215333591U (en) |
-
2021
- 2021-05-28 CN CN202121169990.3U patent/CN215333591U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211228 |