CN212225504U - Sealing device of hydraulic ceramic plunger pump - Google Patents

Abstract

The utility model discloses a sealing device of hydraulic pressure pottery plunger pump, including compressing tightly spiro, lock nut, first lock screw, adjusting gear and sealing member, the sealing member is located the sealed chamber bottom between the pump body of hydraulic pressure pottery plunger pump and the plunger, compress tightly the spiro cover and establish outside the plunger and the bottom stretches into sealed intracavity, the outside upper end and the lower extreme that compress tightly the spiro are equipped with tooth and external screw thread respectively, first lock screw thread tightening is in one side of the pump body, adjusting gear is located the upper end of first lock screw and with compress tightly the meshing mutually of spiro, lock nut is located between first lock screw and the compress tightly the spiro and with compress tightly spiro threaded connection, sealing member long service life, change the frequency low, can practice thrift the running cost, improve production efficiency.

Description

Sealing device of hydraulic ceramic plunger pump

[ technical field ] A method for producing a semiconductor device

The utility model relates to a technical field of plunger pump, especially a hydraulic pressure pottery plunger pump's sealing device's technical field.

[ background of the invention ]

The plunger pump is an important device of a hydraulic system, changes the volume of a sealed working cavity to absorb or press oil by means of reciprocating motion of a plunger in a cylinder body, has the advantages of high rated pressure, compact structure, high efficiency, convenience in flow regulation and the like, and is widely applied to occasions where high pressure, large flow and flow need to be regulated, such as hydraulic machines, engineering machinery and ships.

As shown in fig. 1 to 3, all the hydraulic ceramic plunger pumps on the market at present are sealed by a plurality of rubber sealing rings b with square cross sections, the middle of each rubber sealing ring b is separated by a plastic spacer ring a, and three screws d are used for fastening a pressing ring c so as to press the sealing rings b tightly. In the use process of the sealing structure, the problems that the compression ring c is difficult to uniformly compress the sealing element, the sealing ring b is large in abrasion, short in service life and high in replacement frequency exist, and a problem to be solved is urgently solved.

[ Utility model ] content

The utility model aims at solving the problem among the prior art, providing a sealing device of hydraulic pressure pottery plunger pump, sealing member long service life, it is low to change the frequency, can practice thrift the running cost, improves production efficiency.

In order to realize the above-mentioned purpose, the utility model provides a sealing device of hydraulic pressure pottery plunger pump, including compress tightly spiro, lock nut, first lock screw, adjusting gear and sealing member, the sealing member is located the sealed chamber bottom between the pump body of hydraulic pressure pottery plunger pump and the plunger, compress tightly the spiro cover and establish outside the plunger and the bottom stretches into sealed intracavity, the outside upper end and the lower extreme that compress tightly the spiro are equipped with tooth and external screw thread respectively, first lock screw thread tightening is in one side of the pump body, adjusting gear is located the upper end of first lock screw and meshes with compressing tightly the looks of spiro, lock nut is located between first lock screw and the compression spiro and with compress tightly spiro threaded connection.

Preferably, a plurality of first annular grooves are formed in the connecting surface of the compression spiral ring and the plunger, first O-shaped sealing rings are fixed in the first annular grooves, a plurality of second annular grooves are formed in the connecting surface of the compression spiral ring and the pump body, and second O-shaped sealing rings are fixed in the second annular grooves.

Preferably, a water flowing channel is arranged on the connecting surface of the compression spiral ring and the plunger.

Preferably, an annular bulge is arranged on the outer wall of the compression spiral ring and above the locking nut.

Preferably, the first locking screw is fixed in a first threaded hole of the pump body in a threaded manner, a second threaded hole is formed in the top of the first locking screw, the adjusting gear is sleeved outside the top end of the first locking screw, a step hole communicated with the second threaded hole is formed in the top end of the adjusting gear, the adjusting gear is fixed on the first locking screw through the second locking screw, and a square bump is arranged on the top end of the adjusting gear.

As preferred, the sealing member includes Y type sealing washer, VY type sealing washer and the sealed support ring of V type, the bottom of Y type sealing washer is equipped with first Y type socket, the bottom of VY type sealing washer is equipped with second Y type socket, the top of VY type sealing washer is equipped with first trapezoidal arch, the top of the sealed support ring of V type is equipped with the trapezoidal arch of second, a plurality of peg graft around second Y type socket and the first trapezoidal arch of VY type sealing washer, and the first trapezoidal arch that is located the VY type sealing washer of the superiors pegs graft mutually with the first Y type socket of Y type sealing washer, and the second Y type socket that is located the VY type sealing washer of the lowest floor pegs graft mutually with the trapezoidal arch of second of the sealed support ring of V type.

Preferably, the bottoms of the Y-shaped sealing ring and the VY-shaped sealing ring gradually expand outwards, the outer edges of the upper portions of the Y-shaped sealing ring and the VY-shaped sealing ring are respectively provided with a first annular rib and a second annular rib, and the outermost ends of the first annular rib and the second annular rib are respectively located on the same plane as the outermost ends of the bottoms of the Y-shaped sealing ring and the VY-shaped sealing ring.

Preferably, water-resistant grease is filled between the Y-shaped seal ring, the VY-shaped seal ring and the V-shaped seal support ring.

Preferably, the sealing device further comprises a mud hanging piece, wherein the mud hanging piece is sleeved outside the plunger and is respectively positioned at the top end of the compression spiral ring and the bottom end of the sealing piece.

Preferably, the inner end of the mud flap is bent to a side away from the compression ring or the sealing element to form a bent part.

The utility model has the advantages that: the utility model drives the compression spiral ring to rotate through the adjusting gear, and the compression spiral ring is matched with the locking nut, so that the sealing element 7 is uniformly compressed vertically downwards by the compression spiral ring; the annular bulge is arranged on the compression spiral ring, so that dust is effectively prevented; by changing the structure of the sealing ring and utilizing the front-back splicing combination of the Y-shaped sealing ring, the VY-shaped sealing ring and the V-shaped sealing support ring, the sealing state can be recovered by pressing the pressing spiral ring for multiple times under the condition that the sealing ring is sealed and failed, and the service life of the sealing element is greatly prolonged; the first annular convex rib and the second annular convex rib are respectively arranged outside the Y-shaped sealing ring and the VY-shaped sealing ring, so that the contact area between the Y-shaped sealing ring and the plunger piston is effectively reduced, and a seal is additionally arranged; the friction coefficient of the plunger and the sealing element is reduced by filling water-resistant lubricating grease in the sealing element; through setting up two upper and lower string mud pieces, can keep off the thick granule thing in plunger surface outside the sealing member, reduce the wearing and tearing to the sealing member.

The features and advantages of the present invention will be described in detail by embodiments with reference to the accompanying drawings.

[ description of the drawings ]

FIG. 1 is a front view of a prior art sealing device installed in a hydraulic ceramic plunger pump;

FIG. 2 is a sectional view taken along line A-A of FIG. 1;

FIG. 3 is an enlarged schematic view at B of FIG. 2;

fig. 4 is an installation schematic diagram of the sealing device of the hydraulic ceramic plunger pump of the present invention;

FIG. 5 is an enlarged schematic view at C of FIG. 4;

fig. 6 is a schematic cross-sectional view of a Y-shaped seal ring of the sealing device of the hydraulic ceramic plunger pump according to the present invention;

fig. 7 is a schematic cross-sectional view of a VY-shaped seal ring of the sealing device of the hydraulic ceramic plunger pump of the present invention;

fig. 8 is a schematic cross-sectional view of a V-shaped seal support ring of the sealing device of the hydraulic ceramic plunger pump according to the present invention;

FIG. 9 is a schematic cross-sectional view of a mud-hanging plate of a sealing device of a hydraulic ceramic plunger pump of the present invention

In the figure: 1-pump body, 11-first threaded hole, 2-plunger, 3-compression spiral ring, 31-first annular groove, 32-second annular groove, 33-water flow channel, 34-annular protrusion, 4-lock nut, 5-first lock screw, 51-second threaded hole, 6-adjusting gear, 61-step hole, 62-square protrusion, 7-sealing element, 71-Y-shaped sealing ring, 711-first Y-shaped socket, 712-first annular convex rib, 72-VY-shaped sealing ring, 721-second Y-shaped socket, 722-first trapezoidal protrusion, 723-second annular convex rib, 73-V-shaped sealing support ring, 731-second trapezoidal protrusion, 8-mud hanging piece, 81-bending part, a-plastic spacer ring, b-sealing ring, c-pressing ring and d-screw.

[ detailed description ] embodiments

Referring to fig. 4 to 9, the sealing device of the hydraulic ceramic plunger pump of the present invention comprises a compression ring 3, a locking nut 4, a first locking screw 5, an adjusting gear 6 and a sealing member 7, wherein the sealing member 7 is located at the bottom of a sealing cavity between a pump body 1 and a plunger 2 of the hydraulic ceramic plunger pump, the compression ring 3 is sleeved outside the plunger 2, and the bottom of the compression ring extends into the sealing cavity, the upper end and the lower end of the outer side of the compression ring 3 are respectively provided with teeth and external threads, the first locking screw 5 is screwed on one side of the pump body 1, the adjusting gear 6 is located at the upper end of the first locking screw 5 and is engaged with the compression ring 3, the locking nut 4 is located between the first locking screw 5 and the compression ring 3 and is screwed with the compression ring 3, a plurality of first annular grooves 31 are provided on the connection surface of the compression ring 3 and the plunger 2, the utility model discloses a pump, including first ring channel 31, compression spiral ring 3, plunger 2, adjusting gear 6, first ring channel 31 internal fixation has first O type sealing washer, be equipped with a plurality of second ring channel 32 on the face of being connected of the compression spiral ring 3 and the pump body 1, second O type sealing washer is fixed in the second ring channel 32, be equipped with water flow channel 33 on the connection face of the compression spiral ring 3 and the pump body 2, the outer wall of the compression spiral ring 3 and the top that is located lock nut 4 are equipped with annular bulge 34, first lock screw 5 threaded fixation is in the first screw hole 11 of the pump body 1, the top of first lock screw 5 is equipped with second screw hole 51, adjusting gear 6 overlaps outside the top of first lock screw 5, the top of adjusting gear 6 is equipped with the step hole 61 that link up mutually with second screw hole 51, adjusting gear 6 passes through the second lock screw fixation on first lock screw 5, the top of adjusting gear 6 is, the sealing member 7 comprises a Y-shaped sealing ring 71, a VY-shaped sealing ring 72 and a V-shaped sealing support ring 73, wherein the bottom end of the Y-shaped sealing ring 71 is provided with a first Y-shaped socket 711, the bottom end of the VY-shaped sealing ring 72 is provided with a second Y-shaped socket 721, the top end of the VY-shaped sealing ring 72 is provided with a first trapezoidal protrusion 722, the top end of the V-shaped sealing support ring 73 is provided with a second trapezoidal protrusion 731, a plurality of the second Y-shaped socket 721 of the VY-shaped sealing ring 72 and the first trapezoidal protrusion 722 are inserted in front and back, the first trapezoidal protrusion 722 of the VY-shaped sealing ring 72 on the uppermost layer is inserted in the first Y-shaped socket 711 of the Y-shaped sealing ring 71, the second Y-shaped socket 721 of the VY-shaped sealing ring 72 on the lowermost layer is inserted in the second trapezoidal protrusion 731 of the V-shaped sealing support ring 73, the bottoms of the Y-shaped sealing rings 71 and the VY-shaped sealing ring 72 are gradually expanded outwards, and the upper outer edges of the Y-shaped sealing ring 71 and the VY- Annular bead 723, first annular bead 712 and second annular bead 723 outermost end lie in the coplanar with the bottom outermost end of Y type sealing washer 71 and VY type sealing washer 72 respectively, it has water-fast grease to fill between Y type sealing washer 71, VY type sealing washer 72 and the V type seal support ring 73, still include and hang mud piece 8, hang mud piece 8 cover and establish the plunger 2 and just be located the top that compresses tightly the spiro ring 3 and the bottom of sealing member 7 respectively, hang mud piece 8 the inner to keeping away from one side bending that compresses tightly spiro ring 3 or sealing member 7 and form kink 81.

The utility model discloses the working process:

firstly, the square projection 62 at the top of the adjusting gear 6 is screwed by a wrench, and the adjusting gear 6 drives the compression screw ring 3 to gradually rotate and move downwards in the locking nut 4, so that the sealing element 7 is uniformly compressed. Subsequently, the second locking screw is screwed into the second screw hole 51 after passing through the stepped hole 61, thereby fixing the adjustment gear 6 to the first locking screw 5.

The utility model drives the compression spiral ring to rotate through the adjusting gear, and the compression spiral ring is matched with the locking nut, so that the sealing element 7 is uniformly compressed vertically downwards by the compression spiral ring; the annular bulge is arranged on the compression spiral ring, so that dust is effectively prevented; by changing the structure of the sealing ring and utilizing the front-back splicing combination of the Y-shaped sealing ring, the VY-shaped sealing ring and the V-shaped sealing support ring, the sealing state can be recovered by pressing the pressing spiral ring for multiple times under the condition that the sealing ring is sealed and failed, and the service life of the sealing element is greatly prolonged; the first annular convex rib and the second annular convex rib are respectively arranged outside the Y-shaped sealing ring and the VY-shaped sealing ring, so that the contact area between the Y-shaped sealing ring and the plunger piston is effectively reduced, and a seal is additionally arranged; the friction coefficient of the plunger and the sealing element is reduced by filling water-resistant lubricating grease in the sealing element; through setting up two upper and lower string mud pieces, can keep off the thick granule thing in plunger surface outside the sealing member, reduce the wearing and tearing to the sealing member.

The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any right the scheme after the simple transform of the utility model all belongs to the protection scope of the utility model.

Claims (10)

1. The utility model provides a sealing device of hydraulic pressure ceramic plunger pump which characterized in that: including compressing tightly spiral ring (3), lock nut (4), first lock screw (5), adjusting gear (6) and sealing member (7), sealing member (7) are located the sealed chamber bottom between the pump body (1) of hydraulic pressure pottery plunger pump and plunger (2), compress tightly spiral ring (3) cover and establish outside plunger (2) and the bottom stretches into the sealed intracavity, the outside upper end and the lower extreme that compress tightly spiral ring (3) are equipped with tooth and external screw thread respectively, first lock screw (5) threaded fixation is in one side of the pump body (1), adjusting gear (6) are located the upper end of first lock screw (5) and with compress tightly the mesh of spiral ring (3), lock nut (4) are located between first lock screw (5) and compress tightly spiral ring (3) and with compress tightly spiral ring (3) threaded connection.

2. A sealing arrangement for a hydraulic ceramic piston pump according to claim 1, characterized in that: the pressure ring is characterized in that a plurality of first annular grooves (31) are formed in the connecting face of the pressure ring (3) and the plunger (2), first O-shaped sealing rings are fixed in the first annular grooves (31), a plurality of second annular grooves (32) are formed in the connecting face of the pressure ring (3) and the pump body (1), and second O-shaped sealing rings are fixed in the second annular grooves (32).

3. A sealing arrangement for a hydraulic ceramic piston pump according to claim 1, characterized in that: and a water flowing channel (33) is arranged on the connecting surface of the compression spiral ring (3) and the plunger (2).

4. A sealing arrangement for a hydraulic ceramic piston pump according to claim 1, characterized in that: an annular bulge (34) is arranged on the outer wall of the compression spiral ring (3) and above the locking nut (4).

5. A sealing arrangement for a hydraulic ceramic piston pump according to claim 1, characterized in that: first locking screw (5) screw thread is fixed in first screw hole (11) of the pump body (1), the top of first locking screw (5) is equipped with second screw hole (51), adjusting gear (6) cover is established outside the top of first locking screw (5), the top of adjusting gear (6) is equipped with step hole (61) that link up mutually with second screw hole (51), adjusting gear (6) are fixed on first locking screw (5) through second locking screw, the top of adjusting gear (6) is equipped with square convex block (62).

6. A sealing arrangement for a hydraulic ceramic piston pump according to claim 1, characterized in that: the sealing element (7) comprises a Y-shaped sealing ring (71), a VY-shaped sealing ring (72) and a V-shaped sealing support ring (73), a first Y-shaped socket (711) is arranged at the bottom end of the Y-shaped sealing ring (71), a second Y-shaped socket (721) is arranged at the bottom end of the VY-shaped sealing ring (72), the top end of the VY-shaped sealing ring (72) is provided with a first trapezoidal bulge (722), the top of V type seal support ring (73) is equipped with trapezoidal arch of second (731), a plurality of grafting around second Y type socket (721) and the first trapezoidal arch (722) of VY type sealing washer (72), and first trapezoidal arch (722) that are located the VY type sealing washer (72) of the superiors are pegged graft mutually with first Y type socket (711) of Y type sealing washer (71), and second Y type socket (721) that are located the VY type sealing washer (72) of the lower floor are pegged graft mutually with trapezoidal arch of second (731) of V type seal support ring (73).

7. A sealing arrangement for a hydraulic ceramic piston pump according to claim 6, characterized in that: the bottom of the Y-shaped sealing ring (71) and the bottom of the VY-shaped sealing ring (72) are gradually expanded outwards, a first annular rib (712) and a second annular rib (723) are respectively arranged on the outer edges of the upper portions of the Y-shaped sealing ring (71) and the VY-shaped sealing ring (72), and the outermost ends of the first annular rib (712) and the second annular rib (723) are respectively located on the same plane with the outermost ends of the bottoms of the Y-shaped sealing ring (71) and the VY-shaped sealing ring (72).

8. A sealing arrangement for a hydraulic ceramic piston pump according to claim 6, characterized in that: and water-resistant lubricating grease is filled among the Y-shaped sealing ring (71), the VY-shaped sealing ring (72) and the V-shaped sealing support ring (73).

9. A sealing arrangement for a hydraulic ceramic piston pump according to claim 1, characterized in that: the mud-hanging device is characterized by further comprising a mud-hanging piece (8), wherein the mud-hanging piece (8) is sleeved outside the plunger (2) and is respectively positioned at the top end of the compression spiral ring (3) and the bottom end of the sealing piece (7).

10. A sealing arrangement for a hydraulic ceramic piston pump according to claim 9, characterized in that: the inner end of the mud hanging piece (8) is bent towards one side far away from the pressing spiral ring (3) or the sealing piece (7) to form a bending part (81).

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