CN217108253U - Valve structure for slurry pump - Google Patents
Valve structure for slurry pump Download PDFInfo
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- CN217108253U CN217108253U CN202220699209.1U CN202220699209U CN217108253U CN 217108253 U CN217108253 U CN 217108253U CN 202220699209 U CN202220699209 U CN 202220699209U CN 217108253 U CN217108253 U CN 217108253U
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- hemisphere
- valve seat
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Abstract
The utility model discloses a valve structure for a slurry pump, which belongs to the technical field of slurry pump accessories and comprises a valve seat, a buffer cushion, a semi-ball valve body and a centralizer, wherein the buffer cushion is arranged in the inner cavity of the valve seat, the semi-ball valve body is arranged in the centralizer, and the side wall of the centralizer is provided with a drainage groove for medium to pass through; the top spheroid of centralizer presses the cap to locate directly over the hemisphere valve body for go on spacing to the hemisphere valve body. The semi-spherical valve body is jacked up by high-pressure medium, the centralizer plays a role in guiding the semi-spherical valve body, the upper and lower strokes of the semi-spherical valve body are limited by the spherical pressing cap and the buffer pad, and the medium can flow out through the valve seat and the inner hole of the buffer pad and along the drainage groove on the centralizer; the hemisphere valve body falls on the cushion pad under the action of gravity, and the cushion pad plays support and sealed effect to the hemisphere valve body, utilizes the cooperation realization flexible seal of cushion pad and hemisphere valve body, has slowed down the impact to the hemisphere valve body, prolongs its life, and then has improved production efficiency.
Description
Technical Field
The utility model belongs to the technical field of the slush pump annex, especially, relate to a valve structure for slush pump.
Background
The mud pump is applied to the drilling operation of an oil field, mainly conveys flushing fluid such as mud or water into a drill hole in the drilling process, and mainly has the function of a device that a suction end automatically sucks low-pressure fluid, converts the low-pressure fluid into high-pressure fluid and discharges the high-pressure fluid from a discharge end. The valve is an important component of the slurry pump, and because the traditional valve (comprising a valve rubber, a valve body and a valve seat) bears the scouring and abrasion of high-pressure fluid media such as slurry, gravel and the like for a long time, great tests are brought to the overall impact toughness and abrasion resistance of the valve, the valve becomes a vulnerable part of the slurry pump, and meanwhile, the service life of the valve directly influences the service life of the slurry pump. In addition, the taper sealing of the valve and the pump head of the slurry pump is realized by the matching of taper surfaces, and the main reasons for the damage of the traditional valve at present are as follows:
the valve body and the valve seat are washed by high-pressure fluid medium and are worn out and failed; the valve rubber buffer and the abrasion sealing are failed, so that the conical surface of the valve body directly impacts the conical surface of the valve seat to cause damage; the hardness layer of the valve seat is not deep enough, so that the valve seat is easy to wear and lose efficacy; the service life of the valve seat body is shortened due to unstable performance of the material. This factor seriously affects the smooth drilling operation, and improving the service life of the valve has become a great challenge for various large oil clothing companies to improve the production efficiency and create high benefits.
SUMMERY OF THE UTILITY MODEL
The utility model provides a valve structure for slush pump aims at solving the technical problem that traditional valve structure life is low, not efficient in oil field drilling operation.
In order to solve the technical problem, the utility model discloses the technical scheme who takes is:
the utility model provides a valve structure for slush pump, includes valve seat, blotter, hemisphere valve body and centralizer, the valve seat can with the suction end of slush pump head and the sealed cooperation of discharge end inner wall, the blotter sets up in the inner chamber bottom of valve seat and can with the sealed cooperation of bottom sphere of hemisphere valve body, hemisphere valve body sets up in the centralizer, the inner chamber height that centralizer and blotter enclose is greater than hemisphere valve body, be equipped with the drainage groove that supplies the medium to pass through on the lateral wall of centralizer, the centralizer is used for leading in the vertical direction to hemisphere valve body, and its top is gone on spacing spheroid pressure cap for the stroke that is used for hemisphere valve body.
Preferably, the buffer pad comprises a valve rubber pad and a gasket, the gasket is arranged on the top surface of the valve rubber pad, the inner hole of the valve seat is provided with two step surfaces, and the valve rubber pad is arranged on the step surface at the lower part of the inner hole of the valve seat; the inner hole of the valve seat is a stepped hole with a large upper part and a small lower part, and the centralizer is arranged on the stepped surface at the upper part of the inner hole of the valve seat.
Preferably, the lower part of the inner hole of the valve rubber mat is a taper hole which can be in line contact with the spherical surface at the bottom of the hemispherical valve body, and the inner diameter and the outer diameter of the gasket are consistent with those of the top of the valve rubber mat.
Preferably, the hemispherical valve body sequentially comprises a hemispherical body section, a cylindrical section and an inverted cone section from bottom to top, the bottom of the hemispherical body section is a plane with the diameter smaller than that of the valve seat through hole, the major diameter of the upper end of the inverted cone section is smaller than that of the cylindrical section, and the lower end of the inverted cone section is in arc transition with the cylindrical section; back taper body section suit valve body cushion, the inner chamber phase-match of cap is pressed with the spheroid to the valve body cushion, the up end of valve body cushion salient in back taper body section the up end, be used for pressing the inner chamber top butt of cap with the spheroid.
Preferably, the centralizer is a cylinder with an open bottom, and the bottom of the centralizer is embedded in an inner hole of the valve seat; the side wall of the centralizer is provided with a plurality of drainage grooves for media to pass through, the upper parts of the drainage grooves are rectangular holes penetrating through the side wall of the centralizer, and the lower parts of the drainage grooves are guide grooves inclining towards the lower part of the interior; the middle part of spheroid pressure cap can be with the back taper body section top butt of hemisphere valve body, the center of spheroid pressure cap is radially equipped with a plurality of exhaust holes all around.
Preferably, the lower end of the centralizer is in threaded connection with the upper part of the inner hole of the valve seat.
Preferably, the ball pressing cap is in threaded connection with the suction end and the discharge end of the pump head of the mud pump.
Preferably, a step is arranged in the middle of the outer wall of the valve seat, and sealing grooves are formed in the outer circles of the lower portion and the upper portion of the step and used for being matched with the first sealing ring and the second sealing ring respectively.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: compared with the prior art, the utility model discloses an at the inner chamber installation blotter of valve seat, can make the hemisphere valve body fall down and realize flexible seal on the blotter, play the guide effect to the hemisphere valve body with the help of the centralizer, utilize the spheroid to press cap and blotter to carry on spacingly with the upper and lower stroke of hemisphere valve body. When the valve is used, the hemispherical valve body is jacked up by high-pressure medium, and the medium can flow out through the valve seat and the inner hole of the buffer pad and along the drainage groove on the centralizer; the hemisphere valve body falls on the cushion pad under the action of gravity, and the cushion pad plays support and sealed effect to the hemisphere valve body, and the cushion pad can play flexible sealing effect, can also slow down the impact force to the hemisphere valve body simultaneously, prolongs its life, and then has improved production efficiency. Utilize the utility model discloses can solve traditional valve structure and have the problem that life is low, efficient.
Drawings
Fig. 1 is a schematic structural diagram of a valve structure for a slurry pump according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of the hemispherical valve body of FIG. 1;
FIG. 3 is a cross-sectional view of the hemispherical valve body of FIG. 2;
FIG. 4 is an external view of the centralizer of FIG. 1;
FIG. 5 is a half-sectional view of the centralizer of FIG. 3;
FIG. 6 is a schematic view of the valve rubber mat of FIG. 1;
FIG. 7 is a schematic view of the valve seat of FIG. 1;
in the figure: 1-a valve seat, 2-a first sealing ring, 3-a valve rubber gasket, 4-a gasket, 5-a second sealing ring, 6-a hemispherical valve body, 61-a hemispherical section, 62-a cylindrical section, and 63-an inverted cone section; 7-valve body rubber, 8-sphere pressing cap, 9-centralizer, 91-rectangular hole and 92-guide groove; 10-drainage groove, 11-exhaust hole, 12-annular groove and 13-sealing groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
As shown in fig. 1, the utility model provides a be applied to valve structure of slush pump, including valve seat 1, blotter, hemisphere valve body 6 and centralizer 9, valve seat 1 can be with the sealed cooperation of suction end and the discharge end inner wall of slush pump head, the blotter sets up in the inner chamber bottom of valve seat 1, and can be with the sealed cooperation of bottom sphere of hemisphere valve body 6, hemisphere valve body 6 sets up in centralizer 9, and its bottom is hemispherical, the inner chamber height that centralizer 9 and blotter enclose is greater than hemisphere valve body 6's height, centralizer 9 is used for leading to hemisphere valve body 6 in the vertical direction, be equipped with the drainage groove 10 that supplies the medium to pass through on the lateral wall of centralizer 9; the top of the centralizer 9 is a sphere pressing cap 8 which is arranged above the hemisphere valve body and used for limiting the stroke of the hemisphere valve body 6. The semi-spherical valve body floats upwards and falls down in a cavity enclosed by the cushion pad and the centralizer in the valve seat to realize the opening and closing of the valve. The semispherical valve body floats under the action of a high-pressure medium, and the medium can smoothly flow out of the drainage groove on the centralizer; the hemisphere valve body falls on the cushion pad under the action of gravity, and the cushion pad plays buffering, support and sealed effect to the hemisphere valve body, and the cushion pad can play flexible sealing effect, can also slow down the impact force to the hemisphere valve body simultaneously, prolongs its life.
In a specific embodiment of the present invention, as shown in fig. 2 and 3, the hemispherical valve body 6 is a stepped shaft part, and is divided into a hemispherical body section 61, a cylindrical section 62 and an inverted-cone body section 63 from bottom to top in sequence, the bottom of the hemispherical body section 61 is a plane with a diameter smaller than the through hole of the valve seat 1, the diameter of the upper end of the inverted-cone body section 63 is smaller than the diameter of the cylindrical section 62, and the lower end of the inverted-cone body section 63 is in arc transition with the cylindrical section 62; the outer suit of back taper body section 63 is with its assorted valve body cushion 7, the appearance and the inner chamber phase-match of spheroid pressure cap 8 of valve body cushion 7, the up end of valve body cushion 7 salient in the up end of back taper body section 63, be used for pressing the inner chamber top butt of cap 8 with the spheroid. When the hemispherical valve body falls to the bottom under the action of gravity, the valve body can extrude the cushion pad to close the valve structure; when the hemispherical valve body floats to the highest position, the top of the hemispherical valve body is in contact with the valve body rubber gasket, so that the hemispherical valve body can be buffered and rebounded, the impact force on the hemispherical valve body is reduced, and the service life of the valve is further prolonged.
As a preferable structure, as shown in fig. 4 and 5, the centralizer 9 is a cylinder with an open bottom, the sidewall of the centralizer 9 is provided with a plurality of drainage slots 10 for media to pass through, the upper part of each drainage slot 10 is a rectangular hole 91 penetrating through the sidewall of the centralizer 9, and the lower part of each drainage slot 10 is a guide slot 92 inclining towards the inside and downwards; the middle part of the sphere pressing cap 8 can be abutted against the top of the inverted cone section 63 of the hemispherical valve body 6, and a plurality of exhaust holes 11 are radially arranged around the center of the sphere pressing cap 8, so that gas in the inner cavity of the centralizer can be timely exhausted by the hemispherical valve body in the upward movement process, and the upward movement smoothness of the hemispherical valve body is ensured; meanwhile, the exhaust hole also plays a role of leaking liquid, so that accumulated liquid retained in the inner cavity of the ball pressing cap can be discharged in time, and the phenomenon that the accumulated liquid excessively blocks the upward movement of the hemispherical valve body is avoided.
In a specific embodiment of the present invention, as shown in fig. 1, 6 and 7, the buffer pad includes a valve rubber mat 3 and a gasket 4, the gasket 4 is disposed on the top surface of the valve rubber mat 3, the inner hole of the valve seat 1 is provided with two step surfaces, and the valve rubber mat 3 is disposed on the step surface of the lower portion of the inner hole of the valve seat 1; the inner hole of the valve seat 1 is a stepped hole with a large upper part and a small lower part, and the centralizer 9 is arranged on the stepped surface at the upper part of the inner hole of the valve seat 1. In specific design, as shown in fig. 6, the inner and outer walls of the valve rubber mat 3 are both conical surfaces, the bottom opening is externally provided with a trumpet-shaped end surface, and the stepped surface of the lower part of the valve seat 1 is provided with an annular groove 12 for matching with the trumpet-shaped end surface of the valve rubber mat 3. Meanwhile, the gasket arranged between the valve rubber mat and the centralizer is an annular flat mat, and plays a role in positioning the valve rubber mat.
During specific installation, the lower part of the inner hole of the valve rubber mat 3 is a taper hole which can be in line contact with the spherical surface of the hemispherical body section 61 at the bottom of the hemispherical valve body 6, and the inner diameter and the outer diameter of the gasket 4 are the same as those of the top of the valve rubber mat 3. By adopting the structure, the hemispherical valve body can be in line contact with the valve rubber pad, and the sealing property of the valve in a closed state can be ensured.
During specific manufacturing, as shown in fig. 1, the lower end of the centralizer 9 is in threaded connection with the upper part of the inner hole of the valve seat 1; the centralizer 8 is in threaded connection with the suction end and the discharge end of the pump head of the mud pump. The assembly is more convenient and faster by adopting threaded connection.
In order to ensure the sealing performance of the valve seat installed in the suction end and the discharge end of the pump head of the slurry pump, as shown in fig. 7, a step is arranged in the middle of the outer wall of the valve seat 1, and sealing grooves 13 are respectively arranged on the outer circles of the lower part and the upper part of the step and are used for being matched with the first sealing ring 2 and the second sealing ring 5. Meanwhile, the excircle of the lower part of the step is a conical surface with a large upper part and a small lower part. By adopting the structure, the valve seat can be ensured to be matched with the inner walls of the suction end and the discharge end in a sealing way.
To sum up, the hemisphere valve body in the utility model can increase the corrosion resistance and impact resistance of the valve as the main working surface, the valve is opened by the high-pressure fluid medium through the jacking hemisphere valve body, the fluid medium flows through the inner hole of the valve seat and the valve rubber pad and flows out from the drainage groove on the side surface of the centralizer, the erosion to the valve seat and the valve rubber pad can be slowed down, and the valve is prevented from being affected by the fact that the valve seat hardness layer is not deep enough, the valve is easy to generate abrasion failure, or the valve seat is affected by the gas life shortening caused by the instable material performance of the valve seat; meanwhile, the falling of the hemispherical valve body is in contact with the valve rubber pad to form flexible sealing, so that the service life of the valve is further prolonged. Utilize the utility model discloses can improve the life of valve, ensure going on smoothly of well drilling operation, improve production efficiency and economic benefits.
The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (8)
1. The utility model provides a valve structure for slush pump which characterized in that: including valve seat, blotter, hemisphere valve body and centralizer, the valve seat can with the sealed cooperation of suction end and the discharge end inner wall of slush pump head, the blotter sets up in the inner chamber bottom of valve seat and can with the sealed cooperation of bottom sphere of hemisphere valve body, hemisphere valve body sets up in the centralizer, the inner chamber height that centralizer and blotter enclose is greater than the height of hemisphere valve body, be equipped with the drainage groove that supplies the medium to pass through on the lateral wall of centralizer, the centralizer is used for leading on the vertical direction and its top to go up spacing spheroid pressure cap for being used for the stroke of hemisphere valve body to hemisphere valve body.
2. The valve structure for a mud pump according to claim 1, wherein: the buffer pad comprises a valve rubber pad and a gasket, the gasket is arranged on the top surface of the valve rubber pad, an inner hole of the valve seat is provided with two step surfaces, and the valve rubber pad is arranged on the step surface at the lower part of the inner hole of the valve seat; the inner hole of the valve seat is a stepped hole with a large upper part and a small lower part, and the centralizer is arranged on the stepped surface at the upper part of the inner hole of the valve seat.
3. The valve structure for a mud pump according to claim 2, wherein: the lower part of the inner hole of the valve rubber pad is a taper hole which can be in line contact with the spherical surface at the bottom of the hemispherical valve body, and the inner diameter and the outer diameter of the gasket are consistent with those of the top of the valve rubber pad.
4. The valve structure for a mud pump according to claim 1, wherein: the semi-spherical valve body is sequentially provided with a semi-spherical body section, a cylindrical section and an inverted-cone body section from bottom to top, the bottom of the semi-spherical body section is a plane with the diameter smaller than that of the valve seat through hole, the major diameter of the upper end of the inverted-cone body section is smaller than that of the cylindrical section, and the lower end of the inverted-cone body section is in circular arc transition with the cylindrical section; back taper body section suit valve body cushion, the inner chamber phase-match of cap is pressed with the spheroid to the valve body cushion, the up end of valve body cushion salient in back taper body section the up end, be used for pressing the inner chamber top butt of cap with the spheroid.
5. The valve structure for a mud pump according to claim 4, wherein: the centralizer is a cylinder with an open bottom, and the bottom of the centralizer is embedded in an inner hole of the valve seat; the side wall of the centralizer is provided with a plurality of drainage grooves for media to pass through, the upper parts of the drainage grooves are rectangular holes penetrating through the side wall of the centralizer, and the lower parts of the drainage grooves are guide grooves inclining towards the lower part of the interior; the middle part of spheroid pressure cap can be with the back taper body section top butt of hemisphere valve body, the center of spheroid pressure cap is radially equipped with a plurality of exhaust holes all around.
6. The valve structure for a mud pump according to claim 1, wherein: the lower end of the centralizer is in threaded connection with the upper portion of the inner hole of the valve seat.
7. The valve structure for a mud pump according to claim 1, wherein: the spherical pressing cap is in threaded connection with the suction end and the discharge end of the slurry pump head.
8. A valve structure for a mud pump according to any of claims 1 to 7, wherein: the middle of the outer wall of the valve seat is provided with a step, and the outer circles at the lower part and the upper part of the step are provided with sealing grooves which are used for being matched with the first sealing ring and the second sealing ring respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220699209.1U CN217108253U (en) | 2022-03-28 | 2022-03-28 | Valve structure for slurry pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220699209.1U CN217108253U (en) | 2022-03-28 | 2022-03-28 | Valve structure for slurry pump |
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| Publication Number | Publication Date |
|---|---|
| CN217108253U true CN217108253U (en) | 2022-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220699209.1U Active CN217108253U (en) | 2022-03-28 | 2022-03-28 | Valve structure for slurry pump |
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| CN (1) | CN217108253U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2788779C1 (en) * | 2022-08-10 | 2023-01-24 | Публичное акционерное общество "Татнефть" им. В.Д. Шашина | Submersible pump valve |
-
2022
- 2022-03-28 CN CN202220699209.1U patent/CN217108253U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2788779C1 (en) * | 2022-08-10 | 2023-01-24 | Публичное акционерное общество "Татнефть" им. В.Д. Шашина | Submersible pump valve |
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