CN111980909A

CN111980909A - Rod sealing element of piston pump

Info

Publication number: CN111980909A
Application number: CN202010703976.0A
Authority: CN
Inventors: 胡胜祥
Original assignee: Zhenjiang Lianchuang Machinery Parts Co ltd
Current assignee: Zhenjiang Lianchuang Machinery Parts Co ltd
Priority date: 2020-07-21
Filing date: 2020-07-21
Publication date: 2020-11-24

Abstract

The invention relates to the technical field of sealing elements, and discloses a rod sealing element of a piston pump, which comprises a friction ring, a trapezoidal fixing ring, a reinforcing sealing ring and a sealing ring main body, wherein a groove is formed in the middle of the sealing ring main body, the upper end and the lower end of the sealing ring main body are respectively and fixedly connected with the reinforcing sealing ring, a semicircular groove is formed in the inner side of the reinforcing sealing ring, the trapezoidal fixing ring is in a trapezoidal shape and is positioned between the inner sides of the friction ring on the outer side of the sealing ring main body, the two ends of the trapezoidal fixing ring are respectively and fixedly connected between the inner side of the friction ring and the outer side of the sealing ring main body, the friction ring is in. This rod sealing member of piston pump, through U type recess and U type packing ring in the sealing washer main part and the effect of strengthening the sealing ring, makes the sealing performance in the sealing member promote, and the effect of rethread friction ring makes the life cycle of this sealing member equipment obtain promoting, reduces required cost.

Description

Rod sealing element of piston pump

Technical Field

The invention relates to the technical field of sealing elements, in particular to a rod sealing element of a piston pump.

Background

The piston pump is also called an electric reciprocating pump, and is structurally divided into a single cylinder and a plurality of cylinders, and is characterized by high lift. It is suitable for transporting oil emulsion without solid particles at normal temperature. The device is used for water injection, oil injection and oil extraction of oil fields and coal seams; power pump of hydraulic press of chamber press, hydraulic sand cleaning, ammonia liquor delivery in fertilizer plant, etc. If the overflowing component is made of stainless steel, corrosive liquid can be conveyed. In addition, high-temperature tar, slime, high-concentration mortar, high-viscosity liquid and the like can be conveyed according to different structural materials.

However, when the mechanical device is assembled, the connecting piece at the connecting part is often used, however, when the piston pump is connected, the requirement on the connecting part is high, the connecting sealing piece is needed to help the pump to provide a sealed environment, and the traditional sealing piece has some problems, such as poor sealing effect, easy oil leakage, short service life and the like.

To this end, we have designed a rod seal for a piston pump.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a rod sealing element of a piston pump, which solves the problems of poor sealing effect, easy oil leakage and short service life cycle.

In order to achieve the purpose, the invention adopts the technical scheme that:

the utility model provides a rod sealing member of piston pump, includes friction ring, trapezoidal solid fixed ring, strengthens sealing ring and sealing washer main part, inside division has the recess in the middle of the sealing washer main part, and both ends respectively fixedly connected with strengthen the sealing ring about the sealing washer main part, strengthen the sealing ring inboard and seted up semicircular groove, trapezoidal solid fixed ring is trapezoidal solid shape, and trapezoidal solid fixed ring is located between the sealing washer main part outside friction ring is inboard, and trapezoidal solid fixed ring both ends are between the inboard and the sealing washer main part outside of fixed connection friction ring respectively, the friction ring is trapezoidal solid shape, and the friction ring inboard is the narrower part in trapezoidal upper end.

Further, strengthen the sealing ring including strengthening seal lip, semicircular groove and ring body, ring body lower extreme fixed connection is in the sealing washer main part, and the ring body inboard is close to sealing washer main part one end and is equipped with semicircular groove, is equipped with above the semicircular groove one end and strengthens the seal lip.

Further, the sealing ring main body comprises a first sealing lip, a second sealing lip, an inlet, a U-shaped connecting ring, a U-shaped groove, a U-shaped gasket, a fixed block and a telescopic sealing device, the first sealing lip is positioned at one end of the sealing ring main body and is fixedly connected with the upper end of the U-shaped connecting ring, the lower end of the U-shaped connecting ring is fixedly connected with a second sealing lip, the middle part of one side of the U-shaped connecting ring is provided with a U-shaped groove, and the inner walls of the two ends of the U-shaped groove are fixedly connected with fixed blocks, the inlet is arranged at the outlet position of the two ends of the U-shaped groove, and the inlet is inclined at a certain gradient, the U-shaped gasket is inserted into the inner wall of the groove through the fixing blocks arranged at the two ends of the outer side and movably connected with the U-shaped groove, the telescopic sealing device is positioned between the U-shaped gasket and the concave part of the U-shaped groove, and the telescopic sealing device is fixedly connected to the concave part inside the groove.

Further, flexible sealing device includes compression spring, connecting rod and dead lever, compression spring has a plurality of fixed connection respectively on the recess inner wall, connecting rod both ends difference fixed connection is on two compression springs, the dead lever is located two compression spring middle parts, the inside compression spring that is equipped with of dead lever, and dead lever one end fixed connection is inside the recess, dead lever other end swing joint connecting rod middle part.

Further, the first sealing lip, the second sealing lip and the reinforcing sealing lip are the same in size.

The invention has the beneficial effects that:

1. according to the invention, through the action of the reinforcing sealing ring in the sealing element, the U-shaped groove arranged in the sealing ring main body, the U-shaped gasket and the telescopic sealing device, a required sealing object is only required to be sleeved into an inlet arranged along the U-shaped groove and slowly enters the U-shaped groove, so that the compression spring at the lower end of the telescopic sealing device is abutted against the U-shaped gasket to realize sealing in the U-shaped groove, and the sealing of the inner part is reinforced through the reinforcing sealing ring, so that the sealing performance of the invention is better.

2. According to the invention, through the action of the friction ring, a worker firstly wears and consumes the friction ring on the outer side when using the sealing ring, when the friction ring is worn to a certain degree, the trapezoidal fixing ring can be worn and consumed by using the small pump rod, and when the trapezoidal fixing ring is worn and consumed, the trapezoidal fixing ring can be applied to the small pump rod to wear and consume the sealing ring main body, so that the service life cycle is prolonged to a certain degree, and the cost is reduced.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

fig. 3 is a schematic structural view of the telescopic sealing device of the present invention.

In the figure: 1. a friction ring; 2. a trapezoidal fixing ring; 3. reinforcing the sealing ring; 4. a seal ring main body; 5. a reinforcing seal lip; 6. a semicircular groove; 7. a ring body; 8. a first seal lip; 9. a second sealing lip; 10. at the inlet; 11. a U-shaped connecting ring; 12. a U-shaped groove; 13. a U-shaped washer; 14. a fixed block; 15. a telescopic sealing device; 16. a compression spring; 17. a connecting rod; 18. and (5) fixing the rod.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. 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.

Referring to FIGS. 1-3: a rod sealing element of a piston pump comprises a friction ring 1, a trapezoid fixing ring 2, a reinforcing sealing ring 3 and a sealing ring main body 4, wherein a groove is formed in the middle of the sealing ring main body 4, the upper end and the lower end of the sealing ring main body 4 are respectively and fixedly connected with the reinforcing sealing ring 3, a semicircular groove 6 is formed in the inner side of the reinforcing sealing ring 3, the trapezoid fixing ring 2 is in a trapezoid shape, the trapezoid fixing ring 2 is positioned between the inner sides of the friction ring 1 on the outer side of the sealing ring main body 4, the two ends of the trapezoid fixing ring 2 are respectively and fixedly connected between the inner side of the friction ring 1 and the outer side of the sealing ring main body 4, the friction ring 1 is in a trapezoid shape, and the inner side of the friction ring 1 is a narrower part at the upper end of the trapezoid, so that a worker firstly wears and consumes the friction ring 1 on the outer, can use on little pump rod, wear and tear and consume trapezoidal solid fixed ring 2, when 2 wearing and tearing of trapezoidal solid fixed ring consumed, can remove wearing and tearing and consume sealing washer main part 4 on using the pump rod of little, promoted life cycle, reduce cost to a certain extent.

Wherein, the reinforced sealing ring 3 comprises a reinforced sealing lip 5, a semicircular groove 6 and a ring body 7, the lower end of the ring body 7 is fixedly connected on the sealing ring main body 4, the inner side of the ring body 7 is provided with the semicircular groove 6 near one end of the sealing ring main body 4, the reinforced sealing lip 5 is arranged on one end of the semicircular groove 6, the sealing ring main body 4 comprises a first sealing lip 8, a second sealing lip 9, an inlet part 10, a U-shaped connecting ring 11, a U-shaped groove 12, a U-shaped gasket 13, a fixing block 14 and a telescopic sealing device 15, the first sealing lip 8 is positioned at one end of the sealing ring main body 4 and is fixedly connected with the upper end of the U-shaped connecting ring 11, the lower end of the U-shaped connecting ring 11 is fixedly connected with the second sealing lip 9, the middle part of one side of the U-shaped connecting ring 11 is provided with the U-shaped groove 12, the inner walls at two, and import department 10 is the slope of a grade, U type packing ring 13 alternates fixed block 14 and U type recess 12 swing joint on the recess inner wall through fixed block 14 that outside both ends were equipped with flexible sealing device 15 is located in the middle of U type packing ring 13 and U type recess 12 depressed part, and flexible sealing device 15 fixed connection is in the inside depressed part of recess, flexible sealing device 15 includes compression spring 16, connecting rod 17 and dead lever 18, compression spring 16 has a plurality of fixed connection respectively on the recess inner wall, connecting rod 17 both ends are fixed connection respectively on two compression spring 16, dead lever 18 is located two compression spring 16 middle parts, the inside compression spring 16 that is equipped with of dead lever 18, and dead lever 18 one end fixed connection is inside the recess, dead lever 18 other end swing joint connecting rod 17 middle part, first seal lip 8, The second sealing lip 9 and the reinforcing sealing lip 5 are the same in size, and under the action of the reinforcing sealing ring 3 in the sealing piece, the U-shaped groove 12, the U-shaped gasket 13 and the telescopic sealing device 15 arranged in the sealing ring main body 4, a required sealing object is only required to be sleeved into an inlet 10 arranged along the U-shaped groove 12 and slowly enter the U-shaped groove 12, so that a compression spring 16 at the lower end of the telescopic sealing device 15 is abutted against the U-shaped gasket 13, the U-shaped groove 12 is sealed, and the sealing of the inside is reinforced through the reinforcing sealing ring 3, so that the sealing performance of the sealing device is better.

In conclusion, when the sealing device is used, a required sealing object is sleeved into an inlet 10 arranged along the U-shaped groove 12 and slowly enters the U-shaped groove 12 through the functions of the reinforcing sealing ring 3 in the sealing element, the U-shaped groove 12, the U-shaped gasket 13 and the telescopic sealing device 15 in the sealing ring main body 4, so that the compression spring 16 at the lower end of the telescopic sealing device 15 is abutted against the U-shaped gasket 13 to seal the U-shaped groove 12, the sealing performance of the sealing device is better when the sealing device strengthens the sealing of the inner part through the reinforcing sealing ring 3, and through the function of the friction ring 1, a worker firstly wears and consumes the friction ring 1 at the outer side, when the friction ring 1 is worn to a certain degree, the smaller pump rod can be used to wear and consume the trapezoid fixing ring 2, and when the trapezoid fixing ring 2 is worn and consumed, the sealing device can be applied to the smaller pump rod, the abrasion loss of the sealing ring main body 4 is eliminated, the service life cycle is prolonged to a certain extent, and the cost is reduced.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a rod seal of piston pump, includes friction ring (1), trapezoidal solid fixed ring (2), strengthens sealing ring (3) and sealing washer main part (4), its characterized in that: inside opening in the middle of sealing washer main part (4) has U type recess (12), and sealing washer main part (4) upper and lower both ends respectively fixedly connected with strengthen sealing ring (3), strengthen sealing ring (3) inboard and seted up semicircular groove (6), trapezoidal solid fixed ring (2) are trapezoidal body shape, and trapezoidal solid fixed ring (2) are located between sealing washer main part (4) outside friction ring (1) inboard, between trapezoidal solid fixed ring (2) both ends difference fixed connection friction ring (1) inboard and sealing washer main part (4) outside, friction ring (1) are trapezoidal body shape, and friction ring (1) inboard is the narrower part of trapezoidal upper end.

2. The rod seal of a piston pump as set forth in claim 1, wherein: strengthen sealing ring (3) including strengthening seal lip (5), semicircular groove (6) and ring body (7), ring body (7) lower extreme fixed connection is on sealing washer main part (4), and ring body (7) inboard is close to sealing washer main part (4) one end and is equipped with semicircular groove (6), is equipped with above semicircular groove (6) one end and strengthens seal lip (5).

3. The rod seal of a piston pump as set forth in claim 1, wherein: sealing washer main part (4) are including first seal lip (8), second seal lip (9), import department (10), U type go-between (11), U type recess (12), U type packing ring (13), fixed block (14) and flexible sealing device (15), first seal lip (8) are located sealing washer main part (4) one end and pass through U type go-between (11) upper end fixed connection, and U type go-between (11) lower extreme fixedly connected with second seal lip (9), and U type go-between (11) one side middle part is opened U type recess (12), and fixedly connected with fixed block (14) on U type recess (12) both ends inner wall, U type recess (12) both ends exit position is located in import department (10), and import department (10) are certain slope, U type packing ring (13) alternate fixed block (14) and U type recess (12) swing joint on recess inner wall through fixed block (14) that outside both ends were equipped with flexible sealing device (14) flexible sealing device The placing device (15) is positioned between the U-shaped gasket (13) and the concave part of the U-shaped groove (12), and the telescopic sealing device (15) is fixedly connected to the concave part in the groove.

4. The rod seal of a piston pump as set forth in claim 1, wherein: the telescopic sealing device (15) comprises compression springs (16), connecting rods (17) and fixing rods (18), wherein the compression springs (16) are respectively fixedly connected to the inner wall of the groove, two ends of each connecting rod (17) are respectively fixedly connected to the two compression springs (16), the fixing rods (18) are located in the middle of the two compression springs (16), the compression springs (16) are arranged inside the fixing rods (18), one ends of the fixing rods (18) are fixedly connected to the inside of the groove, and the other ends of the fixing rods (18) are movably connected to the middle of the connecting rods (17).

5. The rod seal of a piston pump as set forth in claim 1, wherein: the first sealing lip (8), the second sealing lip (9) and the reinforcing sealing lip (5) are the same in size.