CN111894870A - Explosion-proof device of slurry pump - Google Patents
Explosion-proof device of slurry pump Download PDFInfo
- Publication number
- CN111894870A CN111894870A CN202010941755.7A CN202010941755A CN111894870A CN 111894870 A CN111894870 A CN 111894870A CN 202010941755 A CN202010941755 A CN 202010941755A CN 111894870 A CN111894870 A CN 111894870A
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- pressure relief
- cavity
- slurry pump
- pump
- hole
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0077—Safety measures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/086—Sealings especially adapted for liquid pumps
Abstract
The invention provides an explosion-proof device of a slurry pump, which belongs to the technical field of slurry pumps and comprises a pressure relief cavity, a wear-resistant ring, an oil outlet pipe and a pressure relief pipe, wherein the pressure relief cavity is arranged in the slurry pump and is communicated with a pump cavity of the slurry pump; the wear-resisting ring is used for blocking oil from entering the pump cavity, can move towards two sides by virtue of pressure difference between the two sides, and is clamped at a preset position when moving towards one side of the slurry pump; the oil outlet pipe is connected with the pressure relief cavity, and a switch valve is arranged on the oil outlet pipe; the pressure relief pipe is connected with the oil outlet pipe, a pressure relief valve is arranged on the pressure relief pipe, and the communication position of the pressure relief pipe and the oil outlet pipe is positioned between the switch valve and the slurry pump. The explosion-proof device of the slurry pump can smoothly release pressure and alarm when the slurry pump is blocked, and simultaneously slurry does not flow into the oil outlet pipe, so that the blockage of the slurry on the oil outlet pipe is avoided, the sensitivity of the device is ensured, and the service life of the device is prolonged.
Description
Technical Field
The invention belongs to the technical field of slurry pumps, and particularly relates to an explosion-proof device of a slurry pump.
Background
The slurry pump refers to a device for converting electric energy into kinetic energy and potential energy of a medium by a machine for increasing energy of a solid-liquid mixed medium by the action of centrifugal force (rotation of an impeller of the pump). The method is mainly suitable for the following steps: the fields of mine, power plant, dredging, metallurgy, chemical industry, building materials, petroleum and other industries. The slurry pump may have the condition of inlet and outlet blockage in the use process, if the pressure cannot be released in time, energy can be gathered in the pump cavity, and accidents such as damage, explosion, pipeline crack and the like of a pump part are easily caused.
Disclosure of Invention
The invention aims to provide an explosion-proof device of a slurry pump, and aims to solve the problems that an inlet and an outlet are blocked possibly in the use process of the slurry pump, if the pressure cannot be released in time, energy is accumulated in a pump cavity, and accidents such as damage, explosion, pipeline crack and the like of a pump part are easily caused.
In order to achieve the purpose, the invention adopts the technical scheme that: the anti-explosion device of the slurry pump comprises a pressure relief cavity, a wear-resistant ring, an oil outlet pipe and a pressure relief pipe, wherein the pressure relief cavity is arranged in the slurry pump and is communicated with a pump cavity of the slurry pump, and oil is filled in the pressure relief cavity; the wear-resisting ring is used for blocking oil from entering the pump cavity, can move towards two sides by virtue of pressure difference between the two sides, and is clamped at a preset position when moving towards one side of the slurry pump; the oil outlet pipe is connected with the pressure relief cavity, and a switch valve is arranged on the oil outlet pipe; the pressure relief pipe is connected with the oil outlet pipe, a pressure relief valve is arranged on the pressure relief pipe, and the communication position of the pressure relief pipe and the oil outlet pipe is positioned between the switch valve and the slurry pump.
As another embodiment of the application, the pressure relief cavity comprises a first cavity and a second cavity, the first cavity is arranged on a front guard plate of the slurry pump, the first cavity is communicated with a pump cavity of the slurry pump, and the wear-resisting ring is arranged in the first cavity in a sliding manner; the second cavity is arranged on a pump cover of the slurry pump and communicated with the first cavity, a step is arranged at the joint of the second cavity and the first cavity, and the wear-resistant ring is clamped at a preset position by means of the step.
As another embodiment of the application, a step surface matched with the step is arranged on the wear-resisting ring, and the wear-resisting ring and the inner wall of the first cavity are arranged in a sliding and sealing mode.
As another embodiment of the application, a groove is formed in the outer wall of the wear-resisting ring, an O-shaped ring is arranged in the groove, and the O-shaped ring is in contact with the inner wall of the first cavity.
As another embodiment of this application, be equipped with the oil drain hole on the pump cover, the oil drain hole is blockked up through the plug screw.
As another embodiment of this application, be equipped with the manometer on the pressure release pipe.
As another embodiment of this application, be equipped with the pressure release hole on the pump cover, the pressure release hole links to each other with the pressure release chamber, and the oil pipe passes through joint and pressure release hole joint.
As another embodiment of the application, a through hole is formed in the clamping joint, two notches are formed in the side wall of the clamping joint, the pressure relief hole is a circular truncated cone hole, the hole diameter of the large hole end of the circular truncated cone hole is equal to the diameter of the clamping joint, and the clamping joint is squeezed into the pressure relief hole and clamped with the pressure relief hole.
As another embodiment of this application, the pressure release hole inner wall is equipped with the sealing layer, and the sealing layer has elasticity.
As another embodiment of this application, the boss is established to the pump cover outside, and the pressure release hole runs through the boss, is equipped with the external screw thread on the outer wall of oil pipe tip, and oil pipe passes through coupling nut with the boss and links to each other.
The explosion-proof device of the slurry pump has the advantages that: compared with the prior art, the explosion-proof device of the slurry pump is characterized in that the pressure relief cavity is arranged in the slurry pump, the pressure relief cavity is communicated with the pump cavity of the slurry pump, and oil is filled in the pressure relief cavity; the wear-resisting ring is used for blocking oil from entering the pump cavity, can move towards two sides by virtue of pressure difference between the two sides, and is clamped at a preset position when moving towards one side of the slurry pump; the oil outlet pipe is connected with the pressure relief cavity, the pressure relief pipe is connected with the oil outlet pipe, and the pressure relief pipe is provided with a pressure relief valve. When the slurry pump is blocked, the pressure in the pump cavity rises, the pushing wear-resistant part moves towards the oil, the extrusion oil flows to the pressure relief pipe from the oil outlet pipe, and when the pressure reaches the set value of the pressure relief valve, the pressure relief valve relieves the pressure, so that the blockage of the slurry pump is indicated, and the maintenance can be carried out in time. Set up wear-resisting ring between fluid and thick liquid simultaneously, because the interval of wear-resisting ring, during the pressure release, the thick liquid does not flow in the oil pipe, has avoided the thick liquid to the jam of oil pipe, has guaranteed the sensitivity of this device, has improved the life-span of this device, has effectively prevented the pipeline of sediment stuff pump and has burst, part damage and explosion accident.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an explosion-proof device of a slurry pump according to an embodiment of the invention;
FIG. 2 is a schematic structural diagram of a card connector according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a pump cover according to an embodiment of the present invention;
fig. 4 is a sectional structural view taken along line a-a of fig. 3.
In the figure: 1. an on-off valve; 2. an oil outlet pipe; 3. a pressure relief valve; 4. a pressure relief pipe; 5. a pressure relief vent; 6. oil liquid; 7. a pump cover; 8. a front guard plate; 9. an O-shaped ring; 10. a plug screw; 11. a wear ring; 12. a pressure gauge; 13. a connecting nut; 14. a clamping head; 16. a boss; 18. a notch; 19. a second cavity.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, the explosion-proof device of slurry pump according to the present invention will now be described. The explosion-proof device of the slurry pump comprises a pressure relief cavity, a wear-resisting ring 11, an oil outlet pipe 2 and a pressure relief pipe 4, wherein the pressure relief cavity is arranged in the slurry pump and is communicated with the pump cavity of the slurry pump; oil liquid 6 is filled in the pressure relief cavity; the wear-resisting ring 11 is used for blocking oil liquid 6 from entering a pump cavity, the wear-resisting ring 11 can move towards two sides by virtue of pressure difference between the two sides, and is clamped at a preset position when moving towards one side of a slurry pump; the oil outlet pipe 2 is connected with the pressure relief cavity, and the switch valve 1 is arranged on the oil outlet pipe 2; the pressure release pipe 4 is connected with the oil outlet pipe 2, the pressure release valve 3 is arranged on the pressure release pipe 4, and the communication position of the pressure release pipe 4 and the oil outlet pipe 2 is positioned between the switch valve 1 and the slurry pump.
Compared with the prior art, the explosion-proof device of the slurry pump provided by the invention has the advantages that the pressure relief cavity is arranged in the slurry pump and is communicated with the pump cavity of the slurry pump; oil liquid 6 is filled in the pressure relief cavity; the wear-resisting ring 11 is used for blocking oil liquid 6 from entering a pump cavity, the wear-resisting ring 11 can move towards two sides by virtue of pressure difference between the two sides, and is clamped at a preset position when moving towards one side of a slurry pump; the oil outlet pipe 2 is connected with the pressure relief cavity, the pressure relief pipe 4 is connected with the oil outlet pipe 2, and the pressure relief pipe 4 is provided with a pressure relief valve 3. When the blockage occurs in the slurry pump, the pressure in the pump cavity rises, the ejection wear-resistant ring 11 moves towards the oil liquid 6, the extrusion oil liquid 6 flows to the pressure relief pipe 4 from the oil outlet pipe 2, and when the pressure reaches the set value of the pressure relief valve 3, the pressure relief valve 3 relieves the pressure, so that the blockage of the slurry pump is indicated, and the maintenance can be carried out in time. Simultaneously, the wear-resisting rings 11 are arranged between the oil liquid 6 and the slurry, and because of the interval of the wear-resisting rings 11, during pressure relief, the slurry does not flow into the oil outlet pipe 2, so that the blockage of the slurry on the oil outlet pipe 2 is avoided, the sensitivity of the device is ensured, the service life of the device is prolonged, and the pipeline crack, the component damage and the explosion accident of a slurry pump are effectively prevented.
In this embodiment, the wear-resistant ring 11 is clamped at the preset position when moving to one side of the slurry pump; when the slurry pump is not blocked, the wear-resisting ring 11 is fixed at a preset position under the pressure of the oil liquid 6, and the oil liquid 6 is arranged in the pressure relief cavity and does not flow. When the sediment stuff pump blocks, the pressure in the pump chamber can constantly increase, and when the pressure in the pump oar was greater than the pressure of fluid 6, wear ring 11 got into outlet pipe 2 with fluid 6 extrusion backward flow, because switching valve 1 on the outlet pipe 2 closed, fluid 6 can only flow to pressure release pipe 4, and when pressure reachd the 3 setting values of relief valve, relief valve 3 carried out the pressure release, avoided the sediment stuff pump to block, can in time overhaul.
As a specific embodiment of the explosion-proof device of the slurry pump provided by the invention, please refer to fig. 1, the pressure relief cavity comprises a first cavity and a second cavity 19, the first cavity is arranged on the front guard plate 8 of the slurry pump, the first cavity is communicated with the pump cavity of the slurry pump, and the wear-resistant ring 11 is slidably arranged in the first cavity; the second cavity 19 is arranged on the pump cover 7 of the slurry pump, the second cavity 19 is communicated with the first cavity, a step is arranged at the joint of the second cavity 19 and the first cavity, and the wear-resistant ring 11 is clamped at a preset position by means of the step.
In this embodiment, since the joint of the second cavity 19 and the first cavity is provided with a step, the shape of the wear-resistant ring 11 is reasonably designed, so that the wear-resistant ring 11 can be prevented from entering the pump cavity, and the step is the preset position.
As a specific implementation manner of the embodiment of the present invention, referring to fig. 1 to 4, a step surface adapted to the step is disposed on the wear-resistant ring 11, and the wear-resistant ring 11 is slidably and sealingly disposed with the inner wall of the first cavity.
In this embodiment, one end of the wear-resistant ring 11 is inserted into the first cavity and can slide along the thickness direction of the first cavity, and a step surface is arranged on the wear-resistant ring 11. When the slurry pump is not blocked and the vacant space of the pressure relief cavity is filled with oil 6, the step surface of the wear-resistant ring 11 is in lap joint with the step at the joint of the second cavity 19 and the first cavity, and the step surface of the wear-resistant ring 11 is tightly attached to the step under the pressure action of the oil 6. When the pressure in the pump cavity is greater than the pressure of the oil liquid 6, the wear-resistant ring 11 extrudes the oil liquid 6 along the sliding of the first cavity, and the wear-resistant ring 11 is inserted into the first cavity end to be matched with the specification of the first cavity, so that the wear-resistant ring 11 always cuts off the slurry and the oil liquid 6 during moving, the slurry cannot enter the oil outlet pipe 2, the blockage of the oil outlet pipe 2 and the pressure relief pipe 4 is effectively prevented, and the sensitivity and the accuracy of the whole device are ensured.
Referring to fig. 1, a groove is formed in the outer wall of the wear-resistant ring 11, an O-ring 9 is disposed in the groove, and the O-ring 9 contacts with the inner wall of the first cavity.
In this embodiment, set up O type circle 9, guaranteed the leakproofness, can prevent better that the thick liquid in the pump chamber from removing to the pressure release chamber.
Referring to fig. 1, an oil drain hole is formed in a pump cover 7 and is blocked by a plug screw 10.
In this embodiment, when oil drainage is required for various reasons such as maintenance, the plug screw 10 is opened to discharge the oil 6.
Referring to fig. 1, as a specific implementation manner of the embodiment of the present invention, a pressure gauge 12 is disposed on the pressure relief pipe 4.
In this embodiment, open when ooff valve 1, the accessible goes out oil pipe 2 and carries out the oiling to pressure release chamber, because pressure release pipe 4 locates between sediment stuff pump and ooff valve 1, sets up the interior fluid 6 pressure of pressure release pump of accurate observation of manometer 12.
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 3 to 4, a pressure relief hole 5 is formed on the pump cover 7, the pressure relief hole 5 is connected to the pressure relief cavity, and the oil outlet pipe 2 is clamped with the pressure relief hole 5 through a clamping joint 14.
In this embodiment, the mode that goes out oil pipe 2 and pressure release hole 5 are connected through the joint is convenient to install fast.
As a specific implementation manner of the embodiment of the present invention, referring to fig. 3 to 4, a through hole is formed in the clamping connector 14, two notches 18 are formed in a side wall of the clamping connector 14, the pressure relief hole 5 is a circular truncated cone hole, a hole diameter of a large hole end of the circular truncated cone hole is equal to a diameter of the clamping connector 14, and the clamping connector 14 is squeezed into the pressure relief hole 5 and tightly clamped with the pressure relief hole 5.
In this embodiment, two notches 18 are formed on the side wall of the card connector 14, so that the card connector 14 can deform under the pressing action. And because the pressure relief hole 5 is a circular truncated cone hole, the hole diameter of the large hole end of the circular truncated cone hole is equal to the diameter of the clamping head 14. After the clamping head 14 is inserted into the pressure relief hole 5, the clamping head 14 is extruded and deformed under the action of the pressure relief hole 5, so that the clamping head 14 is tightly attached to the inner wall of the pressure relief hole 5 to realize clamping.
As a specific implementation manner of the embodiment of the present invention, referring to fig. 3 to 4, a sealing layer is disposed on an inner wall of the pressure relief hole 5, and the sealing layer has elasticity.
In this embodiment, the sealing layer may be a rubber layer, and when the card connector 14 is inserted into the pressure relief hole 5, the rubber layer is better attached to the card connector 14, and the rubber layer may be extruded into the notch 18 of the card connector 14, thereby ensuring the sealing property.
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 3 to 4, a boss 16 is disposed on the outer side of the pump cover 7, the pressure relief hole 5 penetrates through the boss 16, an external thread is disposed on the outer wall of the end portion of the oil outlet pipe 2, and the oil outlet pipe 2 is connected to the boss 16 through a connection nut 13.
In this embodiment, go out oil pipe 2 and go up threaded connection's coupling nut 13 when joint 14 card goes into the pressure release hole 5 hole for coupling nut 13 is connected with boss 16 and oil pipe 2 simultaneously, through joint and coupling nut 13 dual connectivity, makes sealed more firm, avoids leaking the accuracy of whole device because fluid 6.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. Sediment stuff pump explosion-proof equipment, its characterized in that includes:
the pressure relief cavity is arranged in the slurry pump and communicated with a pump cavity of the slurry pump, and oil is filled in the pressure relief cavity;
the wear-resisting ring is used for blocking the oil liquid from entering the pump cavity, can move towards two sides by virtue of pressure difference between the two sides, and is clamped at a preset position when moving towards one side of the slurry pump;
the oil outlet pipe is connected with the pressure relief cavity and is provided with a switch valve; and
the pressure relief pipe is connected with the oil outlet pipe, a pressure relief valve is arranged on the pressure relief pipe, and the communication position of the pressure relief pipe and the oil outlet pipe is located between the switch valve and the slurry pump.
2. The slurry pump explosion vent apparatus of claim 1, wherein said pressure relief chamber comprises:
the first cavity is arranged on a front guard plate of the slurry pump, the first cavity is communicated with a pump cavity of the slurry pump, and the wear-resisting ring is arranged in the first cavity in a sliding manner;
the second cavity is arranged on a pump cover of the slurry pump, the second cavity is communicated with the first cavity, a step is arranged at the joint of the second cavity and the first cavity, and the wear-resisting ring is clamped at a preset position by means of the step.
3. The slurry pump explosion protection device of claim 2, wherein a step surface adapted to the step is provided on the wear ring, and the wear ring is slidably and sealingly disposed with an inner wall of the first cavity.
4. The slurry pump explosion protection device of claim 3, wherein a groove is formed in an outer wall of the wear ring, an O-ring is arranged in the groove, and the O-ring is in contact with an inner wall of the first cavity.
5. The explosion protection device for slurry pump according to claim 2, wherein the pump cover is provided with an oil drain hole, and the oil drain hole is blocked by a plug screw.
6. The slurry pump explosion protection apparatus of claim 1, wherein a pressure gauge is provided on said pressure relief tube.
7. The explosion protection device of slurry pump as claimed in claim 2, wherein said pump cover is provided with a pressure relief hole, said pressure relief hole is connected with said pressure relief cavity, and said oil outlet pipe is fastened with said pressure relief hole by a fastening joint.
8. The explosion-proof device of the slurry pump according to claim 7, wherein a through hole is formed in the clamping head, two notches are formed in the side wall of the clamping head, the pressure relief hole is a circular truncated cone hole, the hole diameter of the large hole end of the circular truncated cone hole is equal to the diameter of the clamping head, and the clamping head is squeezed into the pressure relief hole and clamped with the pressure relief hole.
9. The slurry pump explosion protection apparatus of claim 8, wherein a sealing layer is provided on an inner wall of the pressure relief hole, and the sealing layer has elasticity.
10. The explosion-proof device of slurry pump according to claim 9, wherein a boss is provided on the outer side of the pump cover, the pressure relief hole penetrates through the boss, an external thread is provided on the outer wall of the end portion of the oil outlet pipe, and the oil outlet pipe is connected with the boss through a connecting nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010941755.7A CN111894870A (en) | 2020-09-09 | 2020-09-09 | Explosion-proof device of slurry pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010941755.7A CN111894870A (en) | 2020-09-09 | 2020-09-09 | Explosion-proof device of slurry pump |
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| Publication Number | Publication Date |
|---|---|
| CN111894870A true CN111894870A (en) | 2020-11-06 |
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ID=73225931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010941755.7A Pending CN111894870A (en) | 2020-09-09 | 2020-09-09 | Explosion-proof device of slurry pump |
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| Country | Link |
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| CN (1) | CN111894870A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113860685A (en) * | 2021-12-03 | 2021-12-31 | 河北技投机械设备有限公司 | High-strength mud pumping and sucking device |
| CN115681201A (en) * | 2022-12-15 | 2023-02-03 | 合肥华升泵阀股份有限公司 | Explosion-proof slurry pump |
-
2020
- 2020-09-09 CN CN202010941755.7A patent/CN111894870A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113860685A (en) * | 2021-12-03 | 2021-12-31 | 河北技投机械设备有限公司 | High-strength mud pumping and sucking device |
| CN115681201A (en) * | 2022-12-15 | 2023-02-03 | 合肥华升泵阀股份有限公司 | Explosion-proof slurry pump |
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