CN218293842U - Piston assembly of slurry pump - Google Patents

Abstract

The utility model discloses a mud pump piston assembly, including piston head and piston rod, the outside of piston head is equipped with the piston rod, the inside of piston head is equipped with the coupling sleeve, and the both ends of coupling sleeve all extend to the outside of piston head, be fixed with right recess on the piston head outer wall of coupling sleeve one side, one side of keeping away from right recess on the piston head outer wall is installed left recess, the outside of piston head is equipped with big head shank of bolt, and the one end of big head shank of bolt extends to left recess, the outside of piston head and right recess, the big head shank of right recess one side surface cover is equipped with the nut cover, the big head shank surface cover of right recess one side is equipped with right fixture block, and right fixture block card goes into the inside of right recess. The utility model discloses not only realize the convenient equipment connection of piston assembly, made things convenient for piston assembly to dismantle after wearing and tearing and change, improved piston assembly's wearability moreover.

Description

Mud pump piston assembly

Technical Field

The utility model relates to a piston assembly technical field specifically is a mud pump piston assembly.

Background

The piston assembly is one of the main parts of the hydraulic end system of the slurry pump, and is one of the wearing parts in the drilling operation, the discharge pressure of the slurry pump is generated by the reciprocating linear motion of the piston assembly in the piston, the piston of the drilling slurry pump in the drilling operation at present mainly depends on the rubber part of the piston to realize sealing, mud and sand enter the middle of the piston and the cylinder sleeve in the using process, so that the rubber of the piston is worn too fast, the service life of the piston is shortened, the piston is replaced after being worn, the working progress is influenced, and the labor intensity of workers is increased, therefore, the damage of the piston can seriously restrict the normal drilling and the drilling speed of the drilling well.

The existing piston assembly is not convenient for convenient assembly and connection and excellent sealing performance when in use, greatly influences the convenience and the reliability of the piston assembly during assembly and disassembly and the service life of the mud pump piston assembly, and brings great influence to the service life of the mud pump piston assembly.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a mud pump piston assembly to provide the convenient equipment connection's of not being convenient for problem of piston assembly in solving above-mentioned background.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a mud pump piston assembly, includes piston head and piston rod, the outside of piston head is equipped with the piston rod, the inside of piston head is equipped with the connecting sleeve, and the both ends of connecting sleeve all extend to the outside of piston head, be fixed with right recess on the piston head outer wall of connecting sleeve one side, keep away from one side of right recess on the piston head outer wall and install left recess, the outside of piston head is equipped with the big head shank of bolt, and the one end of big head shank of bolt extends to the outside of left recess, piston head and right recess, the big head shank of right recess one side overlaps on the surface of the big head bolt is equipped with the nut cover, the big head shank of right recess one side overlaps on the surface of the right side and is equipped with right fixture block, and right fixture block card goes into the inside of right recess.

Preferably, the surface of the large-head bolt rod on one side of the left groove is sleeved with a left clamping block, and the left clamping block is clamped in the left groove.

Preferably, a movable sleeve is sleeved on the surface of the connecting shaft sleeve, and the connecting shaft sleeve is movably connected with the movable sleeve.

Preferably, the surface of the movable sleeve is sleeved with a connecting sleeve, and the connecting sleeve is fixedly connected with the piston rod.

Preferably, the outer wall of the piston head is provided with a first sealing groove, and the outer wall of the first sealing groove is sleeved with a first sealing ring.

Preferably, a second sealing groove is formed in the outer wall of the piston head above the first sealing groove, a second sealing ring is sleeved on the outer wall of the second sealing groove, a third sealing groove is formed in the outer wall of the piston head above the second sealing groove, and a third sealing ring is sleeved on the outer wall of the third sealing groove.

Compared with the prior art, the beneficial effects of the utility model are that: the piston assembly not only realizes convenient assembly and connection of the piston assembly, is convenient for disassembly and replacement after the piston assembly is worn, but also improves the wear resistance of the piston assembly;

(1) The movable sleeve is inserted into the connecting sleeve, the connecting sleeve is inserted into the piston head, the connecting shaft sleeve is inserted into the piston head and the movable sleeve, the large-head bolt rod is inserted into the left groove, the connecting shaft sleeve and the right groove, and the piston assembly is assembled and connected under the matching of the large-head bolt rod and the nut sleeve, so that the piston assembly is convenient to replace after being worn, the convenient assembly and connection of the piston assembly are realized, and the piston assembly is convenient to disassemble and replace after being worn;

(2) The left fixture block is sleeved on the surface of the large-head bolt rod, the left fixture block and the left groove are used for limiting and supporting, and the right fixture block and the right groove are used for limiting and supporting, so that the limiting and supporting of the piston assembly with a reliable structure are realized, and the reliability of the piston assembly structure connection is improved;

(3) The first sealing groove, the second sealing groove and the third sealing groove are processed on the outer wall of the piston head, the sealing performance of the piston head is improved under the matching of the third sealing ring, the second sealing ring and the first sealing ring, the excellent sealing performance of the piston assembly is realized, and the wear resistance of the piston assembly is improved.

Drawings

Fig. 1 is a schematic view of a three-dimensional explosion structure of the present invention;

FIG. 2 is a schematic diagram of a three-dimensional explosion structure of a piston head according to the present invention;

fig. 3 is a schematic view of the second seal ring in front view;

fig. 4 is a schematic view of the three-dimensional structure of the present invention;

fig. 5 is a schematic front view of the present invention.

In the figure: 1. a piston head; 2. a piston rod; 3. connecting sleeves; 4. a movable sleeve; 5. a connecting shaft sleeve; 6. a right fixture block; 7. a right groove; 8. a first seal groove; 9. a second seal groove; 10. a third seal groove; 11. a first seal ring; 12. a second seal ring; 13. a third seal ring; 14. a large head bolt shank; 15. a nut sleeve; 16. a left clamping block; 17. and a left groove.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides an embodiment: a piston assembly of a mud pump comprises a piston head 1 and a piston rod 2, wherein the piston rod 2 is arranged outside the piston head 1, a connecting shaft sleeve 5 is arranged inside the piston head 1, two ends of the connecting shaft sleeve 5 extend to the outside of the piston head 1, a right groove 7 is fixed on the outer wall of the piston head 1 on one side of the connecting shaft sleeve 5, a left groove 17 is installed on one side, far away from the right groove 7, of the outer wall of the piston head 1, a large-head bolt rod 14 is arranged outside the piston head 1, one end of the large-head bolt rod 14 extends to the outside of the left groove 17, the piston head 1 and the right groove 7, a nut sleeve 15 is sleeved on the surface of the large-head bolt rod 14 on one side of the right groove 7, the nut sleeve 15 is in threaded connection with the large-head bolt rod 14, a right clamping block 6 is sleeved on the surface of the large-head bolt rod 14 on one side of the right groove 7, the right clamping block 6 is clamped into the inside of the right groove 7, a left clamping block 16 is sleeved on the surface of the large-head bolt rod 14 on one side of the left groove 17, the left clamping block 16 is clamped into the inside of the left groove 17, a movable sleeve 4 is sleeved on the surface of the connecting shaft sleeve 5, a movable sleeve 4, a movable sleeve is movably connected with a movable sleeve 4, a movable sleeve, a piston rod 3 is fixedly connected with the piston rod 2, and a piston rod 3;

when the piston assembly is used, the connecting sleeve 3 is connected with the piston rod 2, the movable sleeve 4 is inserted into the connecting sleeve 3, the connecting sleeve 3 is inserted into the piston head 1, the connecting shaft sleeve 5 is inserted into the piston head 1 and the movable sleeve 4, the left clamping block 16 is sleeved on the surface of the large-head bolt rod 14, the large-head bolt rod 14 is inserted into the left groove 17, the connecting shaft sleeve 5 and the right groove 7, the right clamping block 6 is sleeved on the surface of the large-head bolt rod 14, the nut sleeve 15 is sleeved on the surface of the large-head bolt rod 14, the right clamping block 6 is connected with the right groove 7 under the matching of the large-head bolt rod 14 and the nut sleeve 15, the left clamping block 16 is connected with the left groove 17, the connecting shaft sleeve 5 is connected with the piston head 1 to assemble and connect the piston assembly, so that the piston assembly is convenient to replace after being worn, the piston assembly is convenient to assemble and connect the piston assembly, and disassemble and replace after being worn;

when the piston assembly limiting support device is used, the left clamping block 16 is sleeved on the surface of the large-head bolt rod 14, the left clamping block 16 is clamped into the left groove 17, the left clamping block 16 and the left groove 17 play a role in limiting support, the right clamping block 6 is sleeved on the surface of the large-head bolt rod 14, the right clamping block 6 is clamped into the right groove 7, and the right clamping block 6 and the right groove 7 play a role in limiting support, so that the limiting support of the piston assembly with a reliable structure is realized, and the reliability of the structural connection of the piston assembly is improved;

a first sealing groove 8 is formed in the outer wall of the piston head 1, a first sealing ring 11 is sleeved on the outer wall of the first sealing groove 8, a second sealing groove 9 is formed in the outer wall of the piston head 1 above the first sealing groove 8, a second sealing ring 12 is sleeved on the outer wall of the second sealing groove 9, a third sealing groove 10 is formed in the outer wall of the piston head 1 above the second sealing groove 9, a third sealing ring 13 is sleeved on the outer wall of the third sealing groove 10, and the first sealing ring 11, the second sealing ring 12 and the third sealing ring 13 are butyronitrile 70 green/purple O-shaped rings of Beck sealing company;

when the piston assembly is used, the first sealing groove 8, the second sealing groove 9 and the third sealing groove 10 are processed on the outer wall of the piston head 1, the first sealing ring 11 is sleeved on the surface of the first sealing groove 8, the second sealing ring 12 is sleeved on the surface of the second sealing groove 9, the third sealing ring 13 is sleeved on the surface of the third sealing groove 10, and the sealing performance of the piston head 1 is improved under the cooperation of the third sealing ring 13, the second sealing ring 12 and the first sealing ring 11, so that the excellent sealing performance of the piston assembly is realized, and the wear resistance of the piston assembly is improved.

When the embodiment of the application is used: firstly, a connecting sleeve 3 is connected with a piston rod 2 together, a movable sleeve 4 is inserted into the connecting sleeve 3, the connecting sleeve 3 is inserted into a piston head 1, a connecting shaft sleeve 5 is inserted into the piston head 1 and the movable sleeve 4, a left clamping block 16 is sleeved on the surface of a large-head bolt rod 14, the large-head bolt rod 14 is inserted into a left groove 17, a connecting shaft sleeve 5 and a right groove 7, a right clamping block 6 is sleeved on the surface of the large-head bolt rod 14, a nut sleeve 15 is sleeved on the surface of the large-head bolt rod 14, the right clamping block 6 is connected with the right groove 7 under the matching of the large-head bolt rod 14 and the nut sleeve 15, the left clamping block 16 is connected with the left groove 17, the connecting shaft sleeve 5 is connected with the piston head 1 to assemble and connect a piston assembly, so that the piston assembly is convenient to replace after being worn, and then the left clamping block 16 is sleeved on the surface of the large-head bolt rod 14, the left fixture block 16 is clamped into the left groove 17, the left fixture block 16 and the left groove 17 play a role of limiting and supporting, the right fixture block 6 is sleeved on the surface of the large-head bolt rod 14, the right fixture block 6 is clamped into the right groove 7, the right fixture block 6 and the right groove 7 play a role of limiting and supporting, then the first seal groove 8, the second seal groove 9 and the third seal groove 10 are processed on the outer wall of the piston head 1, the first seal ring 11 is sleeved on the surface of the first seal groove 8, the second seal ring 12 is sleeved on the surface of the second seal groove 9, the third seal ring 13 is sleeved on the surface of the third seal groove 10, the sealing performance of the piston head 1 is improved under the cooperation of the third seal ring 13, the second seal ring 12 and the first seal ring 11, and the use work of the piston assembly is completed.

Claims (6)

1. A mud pump piston assembly, includes piston head (1) and piston rod (2), its characterized in that: the outside of piston head (1) is equipped with piston rod (2), the inside of piston head (1) is equipped with connecting sleeve (5), and the both ends of connecting sleeve (5) all extend to the outside of piston head (1), be fixed with right recess (7) on piston head (1) outer wall of connecting sleeve (5) one side, keep away from one side of right recess (7) on piston head (1) outer wall and install left recess (17), the outside of piston head (1) is equipped with big head bolt pole (14), and the one end of big head bolt pole (14) extends to the outside of left recess (17), piston head (1) and right recess (7), big head bolt pole (14) surface cover of right recess (7) one side is equipped with nut cover (15), big head bolt pole (14) surface cover of right recess (7) one side is equipped with right fixture block (6), and right fixture block (6) card goes into the inside of right recess (7).

2. A mud pump piston assembly as set forth in claim 1, wherein: a left clamping block (16) is sleeved on the surface of the large-head bolt rod (14) on one side of the left groove (17), and the left clamping block (16) is clamped into the left groove (17).

3. A mud pump piston assembly as set forth in claim 1, wherein: the surface of the connecting shaft sleeve (5) is sleeved with a movable sleeve (4), and the connecting shaft sleeve (5) is movably connected with the movable sleeve (4).

4. A mud pump piston assembly as set forth in claim 3, wherein: the surface of the movable sleeve (4) is sleeved with a connecting sleeve (3), and the connecting sleeve (3) is fixedly connected with the piston rod (2).

5. A mud pump piston assembly as set forth in claim 1, wherein: the outer wall of the piston head (1) is provided with a first sealing groove (8), and the outer wall of the first sealing groove (8) is sleeved with a first sealing ring (11).

6. A mud pump piston assembly as set forth in claim 5, wherein: be equipped with second seal groove (9) on piston head (1) outer wall of first seal groove (8) top, the cover is equipped with second sealing washer (12) on the outer wall of second seal groove (9), be equipped with third seal groove (10) on piston head (1) outer wall of second seal groove (9) top, the cover is equipped with third sealing washer (13) on the outer wall of third seal groove (10).

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