CN115681201B - Explosion-proof slurry pump - Google Patents
Explosion-proof slurry pump Download PDFInfo
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- CN115681201B CN115681201B CN202211611039.8A CN202211611039A CN115681201B CN 115681201 B CN115681201 B CN 115681201B CN 202211611039 A CN202211611039 A CN 202211611039A CN 115681201 B CN115681201 B CN 115681201B
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Abstract
The invention relates to the technical field of slurry pumps, in particular to an explosion-proof slurry pump which comprises an elastic sealing part, a shearing part, a pump cavity and a sealing cavity communicated with the pump cavity, wherein the sealing cavity consists of a pump body and a sealing part; the elastic sealing part is positioned in the sealing cavity and deforms, so that the pump cavity is sealed; when the pressure in the pump cavity reaches the explosion critical value, the pressure acts on the end face of the sealing part to form axial thrust, when the thrust exceeds the axial force which can be supported by the shearing part, the shearing part breaks so as not to extrude the sealing part any more, the gap between the sealing part and the pump body is increased, the elastic sealing part is not deformed any more, and therefore the sealing effect is lost, the high-pressure gas in the pump cavity is decompressed through the gap between the sealing part and the pump body, the explosion is avoided, and the explosion problem caused by the easy blockage of the existing slurry pump is solved.
Description
Technical Field
The invention relates to the technical field of slurry pumps, in particular to an explosion-proof slurry pump.
Background
The slurry pump is 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 6 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.
At present, the explosion-proof means of sediment stuff pump adopts the washing filling valve, washes filling valve and pump chamber intercommunication, both can be used for packing, also can be used for washing the pump chamber, washes the filling valve simultaneously and still has the effect of relief valve concurrently, and when pump chamber internal pressure is too high, then the accessible washes the filling valve release. However, in the actual use process, the flushing filler valve is often blocked, and the flushing filler valve is only used as an explosion-proof means, so that the reliability is low, and the safety of the slurry pump cannot be ensured.
Disclosure of Invention
In order to solve the safety defect that the slurry pump is easy to block in the prior art, the invention provides the explosion-proof slurry pump, and the reliable explosion-proof performance can be realized only by simply modifying the existing slurry pump.
The invention adopts the following technical scheme:
an explosion-proof slurry pump comprises a pump body and a sealing component arranged in the pump body; the sealing component is matched with the pump body to form a sealing cavity communicated with the pump cavity; the sealing cavity is filled with an elastic sealing part; the anti-explosion slurry pump also comprises a shearing part, the elastic sealing part and the shearing part are positioned at two sides of the sealing part, and the shearing part is clamped between the pump body and the sealing part;
the shearing part is provided with two states, in the first state, the pump body extrudes the sealing part through the shearing part, so that the elastic sealing part is in a compression state to realize the sealing of the pump cavity;
in the second state, the shearing part deforms, the sealing component moves towards the shearing part, the elastic sealing part is in the stretching state, and a gap is formed between the pump body and the sealing component at the elastic sealing part, so that the pump cavity leaks;
when the pressure in the pump cavity is in an explosion critical state, the extrusion force applied to the sealing part is N1; when the pressure applied to the shearing part by the sealing component reaches the set pressure N2, the shearing part is switched from the first state to the second state; n1> N2.
Preferably, the shearing portion includes a first force receiving portion and a second force receiving portion; the pump body abuts against the first force-bearing part, and the sealing component abuts against the second force-bearing part; in the first state, the first stress part and the second stress part are fixedly connected; in the second state, the first force receiving portion and the second force receiving portion are broken.
Preferably, the first force-bearing portion is of an annular structure coaxial with the rotating shaft, the first force-bearing portion circumferentially abuts against the pump body, and a gap is formed between the first force-bearing portion and the sealing component.
Preferably, the second force-receiving portion and the first force-receiving portion cooperate to form a right-angled structure abutting against the pump body on a side away from the elastic sealing portion.
Preferably, the sealing component is provided with a gap space for placing the second stress part; the first stress part is of a plane annular structure, the second stress part is of a cylindrical structure, and the first stress part is arranged on the periphery of the second stress part.
Preferably, the shearing section consists of a plurality of rotationally symmetrical monomers.
Preferably, the shear part consists of 4 to 6 monomers.
Preferably, the pump body is provided with a notch matched with the single body; when the shearing part is installed, firstly, the integral structure of the pump body is loosened, the single bodies are placed one by one through the notch to form the shearing part, then, the positions of the single bodies are adjusted in a rotating mode, and then the integral structure of the pump body is locked, so that the pump body is matched with the sealing component to clamp each single body; when the shearing part is disassembled, the integral structure of the pump body is loosened, and the monomers are taken out one by one through the opening.
The invention has the advantages that:
(1) According to the slurry pump provided by the invention, the shearing part is added on the basis of the existing slurry pump, and before the pressure in the pump cavity reaches the explosion critical value, the sealing part is pushed by the pressure in the pump cavity to destroy the shearing part, so that the sealing part moves to one side far away from the elastic sealing part, the elastic sealing part recovers deformation, the pump cavity leaks, and explosion is avoided.
(2) The shearing part is simple in structure and convenient to install and detach, the shearing part is integrally applied with force by the sealing part, the shearing part is isolated from the pump cavity, the shearing part is sheared as long as the pressure in the pump cavity reaches a set value, so that the extrusion force applied to the shearing part by the sealing part reaches a set shearing force, and the sealing part is displaced, so that the pump cavity is integrally leaked. The invention realizes explosion prevention by shearing the shearing part, is not influenced by pump cavity blockage and has high reliability.
(3) According to the invention, the fixed-point damage of the slurry pump is realized through the arrangement of the shearing part, the fault controllability under the condition of the blockage of the slurry pump is realized, the maintenance of the slurry pump is convenient, and the maintenance cost is reduced.
(4) According to the anti-explosion pump, the first stress part is circumferentially abutted against the pump body, the second stress part is circumferentially abutted against the sealing component, and the first stress part and the second stress part are circumferentially stressed, so that the stability of the relative movement trend of the first stress part and the second stress part in the axial direction is ensured, the stability of the shearing trend of the shearing part is improved, and the anti-explosion reliability is ensured.
(5) According to the invention, the shearing part abuts against the pump body through the right-angle structure, the sealing part abuts against the second stress part through the right angle of the gap space, so that the sealing part and the pump body are ensured to apply force to the first stress part and the second stress part in the axial direction of the rotating shaft, the reliability of shearing deformation of the shearing part is ensured, and the pressure safety of the pump cavity is ensured.
(6) The shearing part is composed of a plurality of rotationally symmetrical monomers, the central angle of each monomer is taken as a value in the interval of [60 degrees and 90 degrees ], and the monomers are conveniently installed on the slurry pump and combined with the shearing part. The pump body is provided with a notch matched with the single body, so that the single body can be conveniently and quickly disassembled.
Drawings
FIG. 1 is a schematic cross-sectional view of an explosion-proof slurry pump;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is an enlarged view of the mounting position of the cutting portion;
FIG. 4 is a cross-sectional view of a cutout;
FIG. 5 is a side view of the shear section;
FIG. 6 is a front view of the cutout;
FIG. 7 is a schematic view of a monomer assembly;
FIG. 8 is a schematic view showing the mounting position of the shearing portion on the pump body.
1. A pump body; 11. opening the gap; 2. a sealing member; 3. a shearing section; 31. a first receiving unit; 32. a second force receiving portion; 33. a monomer; 4. an elastic sealing portion; 5. a rotating shaft.
Detailed Description
In the currently used slurry pump, one end of a sealing component 2 directly abuts against a pump body 1, the other end of the sealing component 2 is matched with the pump body 1 to clamp an elastic sealing part 4, and the elastic sealing part 4 deforms to seal a pump cavity; the rotating shaft 5 is arranged in the pump cavity, and the rotating shaft 5 drives the impeller 6 to move so as to provide centrifugal force for increasing medium energy. At present, the sediment stuff pump passes through the pressure relief of filling valve 7, if filling valve 7 blocks up, then the inside pressure of pump chamber continues to increase, in case increase to the explosion critical value, then explode, and the sediment stuff pump is seriously impaired, and the cost of maintenance is high or even unable maintenance. The explosion-proof slurry pump provided by the embodiment is an improvement on the existing slurry pump, and the risk of explosion of the slurry pump is completely eradicated by adding the shearing part 3.
Referring to fig. 1, 2, and 3, in the explosion-proof slurry pump provided by this embodiment, the pump body 1 abuts against the sealing member 2 through the shearing portion 3, so that one end of the sealing member 2, which is far away from the shearing portion 3, cooperates with the pump body 1 to clamp the elastic sealing portion 4, thereby ensuring the sealing performance of the pump cavity.
In the embodiment, the shearing part 3 enables the pump body 1 and the sealing part 2 to form a gap at one side far away from the elastic sealing part 4, so that when the pump cavity is blocked, the pressure inside the pump cavity rises and provides thrust for the sealing part 2, and the shearing part 3 is positioned in the moving direction of the sealing part 2 under the action of the thrust; when the sealing part 2 atress reached the pressure N2 of settlement, the 3 structures in shearing part were destroyed to make sealing part 2 remove towards the 3 directions in shearing part, elastic sealing portion 4 resumes initial form, forms the clearance between sealing part 2 and the pump body 1, and the pump chamber takes place to reveal, avoids high-pressure explosion's risk.
In the present embodiment, the shearing portion 3 includes the first force-receiving portion 31 and the second force-receiving portion 32, and when the first state of the shearing portion 3, that is, the structure is stable, the first force-receiving portion 31 abuts against the pump body 1, and one end of the second force-receiving portion 32, which is far away from the pump body 1, abuts against the sealing member 2. In the first state, a gap is left between the first force receiving portion 31 and the seal member 2; the movement trend of the second force-bearing part 32 far from the elastic sealing part 4 is increased along with the increase of the pressure inside the pump cavity, when the pressure inside the pump cavity is increased to reach N2, the connection between the first force-bearing part 31 and the second force-bearing part 32 is broken, the second force-bearing part 32 moves to the side far from the elastic sealing part 4, so that the sealing part 2 abuts against the first force-bearing part 31, namely the sealing part 2 moves to the side far from the elastic sealing part 4, a gap is formed between the sealing part 2 and the pump body 1 at the position of the elastic sealing part 4, and the leakage of the pump cavity occurs.
Referring to fig. 4, 5, and 6, in the present embodiment, the first force receiving portion 31 has an annular structure coaxial with the rotating shaft 5, and the second force receiving portion 32 has a cylindrical structure coaxial with the rotating shaft 5; the first force receiving portion 31 is disposed at the outer periphery of the second force receiving portion 32.
Referring to fig. 3, in the present embodiment, the end of the sealing member 2 is provided with a gap space for preventing the second force-receiving portion 32, and the second force-receiving portion 32 and the first force-receiving portion 31 cooperate to form a right-angled structure abutting against the pump body 1 on the side away from the elastic sealing portion 4. So shearing part 3 supports through the right angle structure and leans on pump body 1, and seal part 2 supports through the right angle in breach space and leans on second atress portion 32, has guaranteed seal part 2 and pump body 1 to first atress portion 31 and second atress portion 32 application of force on 5 axis directions of pivot, has guaranteed the reliability of 3 shear deformation of shearing part to the pressure security of pump chamber has been guaranteed.
Referring to fig. 7, in the present embodiment, the shearing portion 3 is composed of a plurality of single bodies 33 that are rotationally symmetric, and each single body 33 includes a part of the first force receiving portion 31 and the second force receiving portion 32. Specifically, 4-6 single bodies 33 can be arranged, so that the central angle of each single body 33 is a value in an interval [60 degrees, 90 degrees ], and the single bodies 33 can be conveniently installed on a slurry pump and combined with the shearing part 3.
Referring to fig. 8, in specific implementation, a notch 11 matched with the single body 33 may be formed in the pump body 1, and the single body 33 is installed through the notch 11. The specific installation mode comprises the following steps:
before the pump body 1 is assembled, the single bodies 33 are placed one by one through the notches 11, the position of the shearing part 3 is adjusted, and the single bodies 33 are prevented from being completely positioned at the notches 11 so as to prevent the single bodies 33 from falling off the notches 11; then installing a sealing component 2, wherein the sealing component 2 is matched with the pump body 1 to clamp the shearing part 3; the elastic seal portion 4 and the pump body 1 are assembled.
During concrete implementation, the monomer 33 only needs to be changed under the pump body 1 not hard up state, and under the pump body not hard up state, rotatable shearing portion 3 for in the monomer 33 rotates to opening 11, thereby convenient to detach, new monomer 33 locks the pump body 1 again after putting into the pump body 1 through opening 11, alright realize the change of shearing portion 3 and the maintenance of sediment stuff pump, convenient and fast, low cost.
The invention is not to be considered as limited to the specific embodiments shown and described, but is to be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (2)
1. An explosion-proof slurry pump comprises a pump body (1) and a sealing component (2) arranged in the pump body (1); the sealing component (2) is matched with the pump body (1) to form a sealing cavity communicated with the pump cavity, and an elastic sealing part (4) is filled in the sealing cavity; the method is characterized in that: the anti-explosion slurry pump further comprises a shearing part (3), the elastic sealing part (4) and the shearing part (3) are positioned on two sides of the sealing part (2), and the shearing part (3) is clamped between the pump body (1) and the sealing part (2);
the shearing part (3) is provided with two states, in the first state, the pump body (1) extrudes the sealing part (2) through the shearing part (3), so that the elastic sealing part (4) is in a compression state to realize the sealing of the pump cavity;
in the second state, the shearing part (3) is deformed, the sealing component (2) moves towards the shearing part (3), the elastic sealing part (4) is in an extension state, and a gap is formed between the pump body (1) and the sealing component (2) at the elastic sealing part (4) to enable the pump cavity to leak;
when the pressure in the pump cavity is in an explosion critical state, the extrusion force applied to the sealing part (2) is N1; when the pressure applied to the shearing part (3) by the sealing component (2) reaches the set pressure N2, the shearing part (3) is switched from the first state to the second state; n1> N2;
the shearing part (3) comprises a first stress part (31) and a second stress part (32); the pump body (1) abuts against the first stress part (31), and the sealing component (2) abuts against the second stress part (32); in the first state, the first stress part (31) is fixedly connected with the second stress part (32); in the second state, the first force-receiving part (31) and the second force-receiving part (32) are broken;
the first stress part (31) is of an annular structure coaxial with the rotating shaft (5), the first stress part (31) is abutted against the pump body (1) in the circumferential direction, and a gap is formed between the first stress part (31) and the sealing component (2);
the second stress part (32) and the first stress part (31) are matched at one side far away from the elastic sealing part (4) to form a right-angle structure abutting against the pump body (1);
the sealing part (2) is provided with a gap space for placing the second stress part (32); the first stress part (31) is of a plane annular structure, the second stress part (32) is of a cylindrical structure, and the first stress part (31) is arranged on the periphery of the second stress part (32);
the shearing part (3) consists of a plurality of rotationally symmetrical monomers (33);
the pump body (1) is provided with a notch (11) matched with the single body (33); when the shearing part is installed, firstly, the integral structure of the pump body (1) is loosened, the monomers (33) are placed one by one through the notch (11) to form the shearing part (3), then the position of the monomers (33) is adjusted in a rotating mode, and then the integral structure of the pump body (1) is locked, so that the pump body (1) is matched with the sealing part (2) to clamp each monomer (33); when the shearing part (3) is disassembled, firstly, the whole structure of the pump body (1) is loosened, and the monomers (33) are taken out one by one through the notch (11).
2. An explosion proof slurry pump according to claim 1, wherein the shear (3) is comprised of 4 to 6 monomers (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211611039.8A CN115681201B (en) | 2022-12-15 | 2022-12-15 | Explosion-proof slurry pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211611039.8A CN115681201B (en) | 2022-12-15 | 2022-12-15 | Explosion-proof slurry pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115681201A CN115681201A (en) | 2023-02-03 |
| CN115681201B true CN115681201B (en) | 2023-03-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211611039.8A Active CN115681201B (en) | 2022-12-15 | 2022-12-15 | Explosion-proof slurry pump |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2003902582A0 (en) * | 2003-05-23 | 2003-06-12 | Weir Warman Ltd | Pressure relief arrangement for a pump |
| CN111894870A (en) * | 2020-09-09 | 2020-11-06 | 河北技投机械设备有限公司 | Explosion-proof device of slurry pump |
| CN217999886U (en) * | 2022-08-11 | 2022-12-09 | 三联泵业股份有限公司 | Explosion-proof slurry pump |
| CN217999887U (en) * | 2022-08-11 | 2022-12-09 | 三联泵业股份有限公司 | Safe pressure release slurry pump |
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- 2022-12-15 CN CN202211611039.8A patent/CN115681201B/en active Active
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| CN115681201A (en) | 2023-02-03 |
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