CN208431121U - A kind of sealing pressure stabilizing mud pump with plunger - Google Patents

Abstract

The utility model discloses a kind of sealing pressure stabilizing mud pump with plunger, belong to mud pump technical field, including transmission component, plunger, sealing lubrication component and clack box component, clack box component includes cabinet, setting inlet on the side wall of the box body and liquid outlet, setting in the intracorporal cabinets cavity of case, the right end of plunger is located in the box body intracavitary, liquid feed valve, liquid valve are equipped in cabinet, liquid feed valve is connected with inlet, and liquid valve is connected with liquid outlet；Transmission component includes transmission component supporting box, transmission device, the left mounting hole of plunger, the left sealing shroud of plunger；Sealing lubrication component includes metallic sleeve gasket, non-metallic fibers sealing element, lubrication assembly；Liquid feed valve is connected by a connecting spring with liquid feed valve, liquid valve.The utility model slush pump can solve the topic that mud pump plunger difficulty of processing in the prior art is big, cost is high, sealing effect is bad, pump pressure is unstable, service life is short.

Description

A kind of sealing pressure stabilizing mud pump with plunger

Technical field

The utility model relates to pump technical field more particularly to a kind of slush pumps.

Background technique

Slush pump is very important production equipment in oilfield applications, is the important component of drilling equipment, it is main It is achievable to oilwell water shutoff displacement of reservoir oil operation for oil field deep well and shallow well operation, it may also be used for cementing plug, envelope when oil well It alters, well-flushing, sand washing and well cementing operation, close, long-range conveying pressure testing of crude oil etc..

The plunger of existing slush pump selects metal material to be made, and since plunger will move repeatedly, bears certain high pressure, Therefore plunger is frequently with the structure of integral type, although this structure good rigidity, pressure resistance, impact resistance will make its table when manufacturing The indexs such as precision, the flatness of sealing surface of face screw thread meet design requirement, and difficulty of processing is very big, replace inconvenience, because This cost is very high.Also there is the plunger using composite construction, such as ceramics are compound with metal plunger, due to consider ceramics and metal The difference of thermal expansivity often needs plunger being made into hollow structure, reduces the rigidity of plunger, meanwhile, this plunger is to processing The requirement of precision is high, and sealing difficulty is big, and cost is also high.Plunger, sealing ring, liquid feed valve, liquid valve of slush pump etc. be high temperature, It works under high pressure, high-speed condition operating condition, pump pressure is uneven, it is very short to will cause these device lifetimes, and these components are most Number is metal material, and surface is easily corroded, wears, it is necessary to be regularly replaced, otherwise easy leakage, part are easy failure, cause to pacify Full hidden danger.Therefore, above type of pump operation maintenance cost is high, always could not be from basic although people design a lot of ways It is upper to solve the problems, such as.

Utility model content

The purpose of this utility model is that in view of the deficiencies of the prior art, providing a kind of sealing pressure stabilizing mud pump with plunger, solve The problem that mud pump plunger difficulty of processing certainly in the prior art is big, cost is high, replacement is inconvenient.

The technical solution adopted in the utility model is as follows.

A kind of sealing pressure stabilizing mud pump with plunger, including transmission component, plunger, sealing lubrication component and clack box component, clack box Component includes that cabinet, setting inlet on the side wall of the box body and liquid outlet, setting exist in the intracorporal cabinets cavity of case, setting Plunger right mounting hole on the left side wall of cabinet is set with the right installation of plunger that central axes are laterally arranged on the right mounting hole of plunger Set, the right end of plunger are located in the box body intracavitary, liquid feed valve, liquid valve are equipped in cabinet, liquid feed valve is connected with inlet, liquid valve It is connected with liquid outlet.

The transmission component includes transmission component supporting box, transmission device, the left mounting hole of plunger, the left sealing shroud of plunger, Transmission device is located in transmission component supporting box, and the right side wall of transmission component supporting box is equipped with the left mounting hole of plunger；It passes The right side of dynamic device is equipped with the plunger of an opening to the right and is inserted into hole, and the radially inner peripheral surface in plunger insertion hole is equipped with and column The screw thread of screw thread on the outer radial periphery surface of the left end of plug to adaptation；The central axes of the left mounting hole of plunger, plunger central axes, Plunger be inserted into hole central axes and the right mounting hole of plunger central axes on the same line；The right end of plunger passes through the right installation of plunger It packs into cabinets cavity, the left end of plunger passes through the left mounting hole of plunger and is threadedly coupled screw thread with the plunger of transmission device insertion hole Connection；The left sealing shroud of plunger is sleeved on the right end of plunger and is connected with the right side of supporting box；The radial direction of the left sealing shroud of plunger Inner peripheral surface is equipped with transmission component sealing device.

Further, sealing lubrication component includes metallic sleeve gasket, non-metallic fibers sealing element, lubrication assembly；The right peace of plunger Some is located in the right mounting hole of plunger encapsulation, and a part is located at the left side wall of cabinet with the right side；In being fixed in the middle part of plunger The radially inner peripheral surface of the blocking disk that axis is overlapped with the central axes of plunger, the right end of the inner hole of the right installation set of plunger is equipped with spiral shell Line, the diameter of the left end of metallic sleeve gasket are less than the diameter of its right end, set on the outer radial periphery surface of the left end of metallic sleeve gasket There are the screw thread being adapted with the screw thread of the inner hole of the right end of the right installation set of plunger, the right end of metallic sleeve gasket and the right installation set of plunger Inner hole thread connection；Stop to be equipped in the space of disk, plunger, metallic sleeve gasket composition in the inner hole of the right installation set of plunger Non-metallic fibers sealing element；Pressure spring is connected between non-metallic fibers sealing element and blocking disk；Lubrication assembly includes lubricating oil Bucket, oil pump, oil water separator, the right installation set quartile of plunger is in the left side wall on the outer radial periphery surface of right half of clack box component Fuel feed hole, the oil outlet being connected to non-metallic fibers sealing element being connected to equipped with one with non-metallic fibers sealing element, lubricating oil Bucket, fuel feed hole, oil outlet, oil water separator pass sequentially through pipeline and are connected to form closed circuit, between Lubricating oil barrel and fuel feed hole Pipeline or oil water separator and Lubricating oil barrel between pipeline be equipped with oil pump.

Further, the non-metallic fibers sealing element is v-seal part.The left and right both ends of non-metallic fibers sealing element are each Equipped with mud retaining ring.

Further, the pipeline between oil outlet and oil water separator is equipped with silt filtering apparatus.

Further, cabinet be equipped with the central axes that are connected respectively with cabinets cavity liquid inlet hole on the same line, Valve module mounting hole is connected outside the separate cabinets cavity end of valve module mounting hole and cabinet；The liquid feed valve includes fixing Inlet valve seat and inlet valve, inlet valve holddown spring, inlet valve holddown spring limit base on liquid inlet hole；Inlet valve seat Water inlet is connected with the inlet of cabinet；Inlet valve is arranged on the water outlet of inlet valve seat；One end of inlet valve holddown spring It is connected with the separate inlet valve seat end of inlet valve, the other end and the inlet valve holddown spring limit base phase of inlet valve holddown spring Even；Inlet valve holddown spring limit base, inlet valve holddown spring are located in the cabinets cavity of cabinet.

The liquid valve includes the water outlet valve seat being arranged in valve module mounting hole, outlet valve, outlet valve holddown spring, pressure Tight valve deck；Water outlet valve seat is fixed on the close cabinets cavity end of valve module mounting hole；The side wall for compressing valve deck is equipped with and liquid out The connected fluid hole of mouth；The water inlet of water outlet valve seat is connected with the cabinets cavity of cabinet, and water outlet valve seat is arranged in outlet valve On water outlet；One end of outlet valve holddown spring is connected with the separate water outlet valve seat end of outlet valve, outlet valve holddown spring it is another One end is connected with a compression valve deck, compresses valve deck and is mounted on the separate cabinets cavity end of valve module mounting hole；Inlet valve compresses Spring retainer seat is connected by a connecting spring with water outlet valve seat；The rigidity of connecting spring is greater than inlet valve holddown spring, water valve The rigidity of holddown spring.

Further, inlet valve seat, water outlet valve seat are in circle ring column structure；Inlet valve holddown spring limit base includes water inlet Valve holddown spring limit base ontology and be connected to inlet valve holddown spring limit base ontology close inlet valve seat end annulus column The separate inlet valve seat end of the sleeve of body shape, inlet valve holddown spring is connected and is located at inlet valve holddown spring limit base ontology In the sleeve of circle ring column shape.Connecting spring plays flexible adjustment pump function, and sleeve plays position-limiting action.

Further, valve deck male screw thread is compressed on valve module mounting hole be connected with the fastening screw for the valve deck that is fixed and clamped.

Further, transmission component sealing device includes the mud-scraping ring that the inner hole left end of the left sealing shroud of plunger is arranged in, setting Oil sealing on the inner hole of the left sealing shroud of plunger on the left of mud-scraping ring.

Further, the outer radial periphery surface of the left end of the right installation set of plunger, which is equipped with, tightens set.It covers, can adjust equipped with tightening The right installation set of plunger is controlled to the pressure of plunger.

Further, slush pump includes pressure release component, and pressure release component includes being connected in cabinet on the side wall of cabinet Outer relief hole, relief hole are equipped with valve.Equipped with pressure relief device, can quick pressure releasing, it is convenient that clack box component internal is overhauled.It is logical Cross relief hole, can also residual slip inside bleeder box assembly, inside cleaning clack box.

The beneficial effects of the utility model are: being equipped with sealing lubrication component, the lubrication to plunger, close can be well realized Envelope, especially, sealing lubrication component can to caused by the movement as high pressure in cabinet, plunger housing along plunger radial periphery The mud that surface is taken out of is cleared up by oil water separator, improves lubrication, sealing effect, and increase slush pump uses the longevity Life.Sealing lubrication component passes through the oily plunger of oil pump, moreover it is possible to play the role of cooling, can also extend sealing element and plunger Service life；When non-metallic fibers sealing part abrasion is serious, the mud leaked can be observed in time by oil water separator, To replace non-metallic fibers sealing element in time.Using connecting spring control inlet valve holddown spring limit base, mass flow discrepancy, When pressure instability, the stroke of flexible adjustment liquid feed valve has the function that stablize pump pressure, so that is set up in protection pump well makes With safety, the service life of slush pump is extended.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model sealing one preferred embodiment of pressure stabilizing mud pump with plunger.

Fig. 2 is the structural schematic diagram of shaft insertion hole in plunger.

Fig. 3 is the partial enlarged view of the part A of Fig. 1.

Fig. 4 is the partial enlarged view of the part B of Fig. 1.

Fig. 5 is the partial enlarged view of the part E of Fig. 4.

Fig. 6 is the partial enlarged view of the part F of Fig. 4.

Fig. 7 is the partial enlarged view of the C portion of Fig. 1.

Fig. 8 is the partial enlarged view of the part D of Fig. 1.

Fig. 9 is the structural schematic diagram of the utility model sealing one preferred embodiment of pressure stabilizing mud pump with plunger.

Figure 10 is the partial enlarged view of the part G of Fig. 9.

Figure 11 is the partial enlarged view of the part H of Fig. 9.

Figure 12 is the partial enlarged view of the part I of Figure 11.

Wherein: cabinet -11；Inlet -12；Liquid outlet -13；The right installation set -14 of plunger；Liquid feed valve -15；Liquid valve -16； Tighten set -18；Cabinets cavity -19；Liquid inlet hole -110；Valve module mounting hole -17；The right mounting hole -111 of plunger；Plunger -2；Pressure Spring -21；Stop disk -22；Transmission component supporting box -31；Transmission device -32；The left sealing shroud -33 of plunger；Plunger is inserted into hole- 34；Mud-scraping ring -36；Oil sealing -37；Metallic sleeve gasket -41；Non-metallic fibers sealing element -42；Mud retaining ring -43；Lubricating oil barrel -44； Oil pump -45；Oil water separator -46；Fuel feed hole -47；Oil outlet -48；Pipeline -49；Silt filtering apparatus -410；Inlet valve seat- 51；And inlet valve -52；Inlet valve holddown spring -53；Inlet valve holddown spring limit base -54；It is discharged valve seat -55；And water outlet Valve -56；Outlet valve holddown spring -57；Compress valve deck -58；Connecting spring -59；Fastening screw -510；Sleeve -511.

Relief hole -61；Valve -62.

Specific embodiment

In the following, being described further in conjunction with the accompanying drawings and embodiments to the utility model.

Embodiment 1.As shown in Fig. 1 to Figure 10, a kind of sealing pressure stabilizing mud pump with plunger, including it is transmission component, plunger 2, close Seal lubrication assembly and clack box component, clack box component includes cabinet 11, the inlet 12 on the side wall that cabinet 11 is arranged in and liquid out Mouth 13, the cabinets cavity 19 being arranged in cabinet 11, the right mounting hole 111 of plunger being arranged on the left side wall of cabinet 11, plunger The right installation set 14 of plunger that central axes are laterally arranged is set on right mounting hole 111, the right end of plunger 2 is located in the box body chamber 19 It is interior, liquid feed valve 15, liquid valve 16 are equipped in cabinet 11, liquid feed valve 15 is connected with inlet 12, liquid valve 16 and 13 phase of liquid outlet Even.

The transmission component includes that transmission component supporting box 31, transmission device 32, the left mounting hole 35 of plunger, a plunger left side are close Big envelope 33, transmission device 32 are located in transmission component supporting box 31, and the right side wall of transmission component supporting box 31 is equipped with column Fill in left mounting hole 35；The right side of transmission device 32 is equipped with the plunger of an opening to the right and is inserted into hole 34, and plunger is inserted into hole 34 Radially inner peripheral surface is equipped with the screw thread on the outer radial periphery surface of the left end of plunger 2 to the screw thread of adaptation；The left installation of plunger The central axes in hole 35, the central axes of plunger 2, plunger are inserted into the central axes in hole 34 and the central axes of the right mounting hole 111 of plunger same On one straight line；The right end of plunger 2 passes through the right installation set 14 of plunger and enters cabinets cavity 19, and the left end of plunger 2 passes through the left peace of plunger Dress hole 35 is simultaneously threadedly coupled threaded connection with the plunger of transmission device 32 insertion hole 34；The left sealing shroud 33 of plunger is sleeved on plunger 2 Right end and be connected with the right side of supporting box 31；It is close that the radially inner peripheral surface of the left sealing shroud 33 of plunger is equipped with transmission component Seal apparatus.

Sealing lubrication component includes metallic sleeve gasket 41, non-metallic fibers sealing element 42, lubrication assembly；The right installation set of plunger 14 some be located in the right mounting hole 111 of plunger, a part be located at cabinet 11 left side wall with the right side；The middle part of plunger 2 is fixed The blocking disk 22 for thering are central axes to be overlapped with the central axes of plunger 2, the radially inner circumference of the right end of the inner hole of the right installation set 14 of plunger Surface is equipped with screw thread, and the diameter of the left end of metallic sleeve gasket 41 is less than the diameter of its right end, the diameter of the left end of metallic sleeve gasket 41 Be equipped with the screw thread adaptable with the screw thread of the inner hole of the right end of the right installation set 14 of plunger to peripheral surface, metallic sleeve gasket 41 with The inner hole thread of the right end of the right installation set 14 of plunger connects；Stop disk 22, plunger 2, gold in the inner hole of the right installation set 14 of plunger Belong in the space that sealing shroud 41 forms and non-metallic fibers sealing element 42 is installed；Non-metallic fibers sealing element 42 and blocking disk 22 Between be connected with pressure spring 21；Lubrication assembly includes Lubricating oil barrel 44, oil pump 45, oil water separator 46, and the right installation set 14 of plunger is divided It is connected to equipped with one with non-metallic fibers sealing element 42 positioned at the left side wall of clack box component with the outer radial periphery surface of right half The oil outlet 48 that fuel feed hole 47, one is connected to non-metallic fibers sealing element 42, Lubricating oil barrel 44, fuel feed hole 47, oil outlet 48, oil Separator 46 passes sequentially through pipeline 49 and is connected to form closed circuit, pipeline 49 or oil between Lubricating oil barrel 44 and fuel feed hole 47 Pipeline 49 is equipped with oil pump 45 between separator 46 and Lubricating oil barrel 44.Sealing lubrication component passes through the oily plunger of oil pump 2, moreover it is possible to play the role of cooling, can also extend the service life of sealing element and plunger 2；When non-metallic fibers sealing part abrasion is serious When, the mud leaked can be observed in time by oil water separator, to replace non-metallic fibers sealing element in time.

The diameter of blocking 22 right part of disk of plunger 2 is greater than the diameter of blocking 22 left part of disk of plunger 2.Resistance The diameter for keeping off disk 22 is greater than the diameter of the right installation set 14 of plunger.

Cabinet 11 be equipped with the central axes that are connected respectively with cabinets cavity 19 liquid inlet hole 110 on the same line, Valve module mounting hole 17 is connected outside 19 end of separate cabinets cavity of valve module mounting hole 17 and cabinet 11；The liquid feed valve 15 include that the inlet valve seat 51 being fixed on liquid inlet hole 110 and inlet valve 52, inlet valve holddown spring 53, inlet valve compress bullet Spring limit base 54；The water inlet of inlet valve seat 51 is connected with the inlet 12 of cabinet 11；Inlet valve 52 is arranged in inlet valve seat 51 Water outlet on and salable/blow-by inlet valve seat 51 water outlet；One end of inlet valve holddown spring 53 and inlet valve 52 51 end of separate inlet valve seat be connected, the other end of inlet valve holddown spring 53 is connected with inlet valve holddown spring limit base 54； Inlet valve holddown spring limit base 54, inlet valve holddown spring 53 are located in the cabinets cavity 19 of cabinet 11.

The liquid valve 16 includes water outlet valve seat 55, the outlet valve 56, outlet valve pressure being arranged in valve module mounting hole 17 Tight spring 57 compresses valve deck 58；Water outlet valve seat 55 is fixed on 19 end of close cabinets cavity of valve module mounting hole 17；Compress valve deck 58 side wall is equipped with the fluid hole being connected with liquid outlet 13；It is discharged 19 phase of cabinets cavity of the water inlet and cabinet 11 of valve seat 55 Connection, outlet valve 56 are arranged on the water outlet of water outlet valve seat 55, and outlet valve 56 is salable/water outlet of blow-by water outlet valve seat 55 Mouthful；One end of outlet valve holddown spring 57 is connected with separate 55 end of water outlet valve seat of outlet valve 56, outlet valve holddown spring 57 The other end is connected with a compression valve deck 58, compresses valve deck 58 and is mounted on 19 end of separate cabinets cavity of valve module mounting hole 17； Inlet valve holddown spring limit base 54 is connected by a connecting spring 59 with water outlet valve seat 55；The rigidity of connecting spring 59 be greater than into The rigidity of water valve holddown spring 53, water valve holddown spring 57.

The internal diameter in wear-resistant sleeve insertion hole 34 gradually reduces from right to left, and the shape and wear-resistant sleeve of the left end of plunger 2 are inserted into hole 34 shape is adapted.Liquid inlet hole 110, valve module mounting hole 17, the central axes of connecting spring 59 are on the same line and vertical Directly in the central axes of plunger 2.

Transmission component sealing device includes the mud-scraping ring 36 that the inner hole left end of the left sealing shroud 33 of plunger is arranged in, is arranged in column Fill in the oil sealing 37 in 36 left side of mud-scraping ring on the inner hole of left sealing shroud 33.

The non-metallic fibers sealing element 42 is v-seal part.The left and right both ends of non-metallic fibers sealing element 42 are respectively provided with Mud retaining ring 43.

The outer radial periphery surface of the left end of the right installation set 14 of plunger, which is equipped with, tightens set 18.It covers, can regulate and control equipped with tightening Pressure of the right installation set 14 of plunger to plunger 2.

Inlet valve seat 51, water outlet valve seat 55 are in circle ring column structure；Inlet valve holddown spring limit base includes inlet valve Holddown spring limit base ontology 512 and 51 end of close inlet valve seat for being connected to inlet valve holddown spring limit base ontology 512 The sleeve 511 of circle ring column shape, 51 end of separate inlet valve seat of inlet valve holddown spring 53 and inlet valve holddown spring limit base Ontology 512 is connected and is located in the sleeve 511 of circle ring column shape.Connecting spring 59 plays flexible adjustment pump function, sleeve 511 Play position-limiting action.

58 male screw thread of valve deck is compressed on valve module mounting hole 17 is connected with the fastening screw for the valve deck 58 that is fixed and clamped 510。

Central axes of the central axes of liquid inlet hole 110 and valve module mounting hole 17 perpendicular to plunger inner shaft 22.

Equipped with sealing lubrication component, the lubrication to plunger housing, sealing, especially, sealing lubrication can be well realized Component can be to the mud taken out of caused by the movement as high pressure in cabinet, plunger housing along plunger housing outer radial periphery surface It is cleared up by oil water separator, improves lubrication, sealing effect, increase the service life of slush pump.

Embodiment 2.As depicted in figs. 11-12, the present embodiment and the difference of embodiment 1 are: oil outlet 48 and water-oil separating Pipeline 49 between device 46 is equipped with silt filtering apparatus 410.

Slush pump includes pressure release component, and pressure release component includes being connected to inside and outside cabinet 11 on the side wall of cabinet 11 Relief hole 61, relief hole 61 are equipped with valve 62.Equipped with multiple pressure relief devices, can quick pressure releasing, it is convenient to clack box component internal Maintenance.By relief hole, can also residual slip inside bleeder box assembly can also be in slush pump inside cleaning clack box Medium is put it clean when not in use, oxidation and winter is avoided to freeze.

Embodiment enumerated above is not to described in the utility model only for understanding that the utility model is used The restriction of technical solution, the those of ordinary skill in relation to field on the basis of the technical solution described in claim, can also make A variety of variations or deformation out, all equivalent variations or deformation should all cover the utility model claims it It is interior.Place is not described in detail for the utility model, is the well-known technique of those skilled in the art of the present technique.

Claims (9)

1. a kind of sealing pressure stabilizing mud pump with plunger, including transmission component, plunger (2), sealing lubrication component and clack box component, clack box Component includes cabinet (11), the inlet (12) being arranged on the side wall of cabinet (11) and liquid outlet (13), is arranged in cabinet (11) the right mounting hole of plunger (111) of cabinets cavity (19), setting on the left side wall of cabinet (11) in, the right mounting hole of plunger (111) the right installation set of plunger (14) that central axes are laterally arranged is set on, the right end of plunger (2) is located in the box body chamber (19) It is interior, liquid feed valve (15), liquid valve (16) are equipped in cabinet (11), liquid feed valve (15) is connected with inlet (12), liquid valve (16) It is connected with liquid outlet (13), it is characterised in that:

The transmission component includes transmission component supporting box (31), transmission device (32), the left mounting hole of plunger (35), a plunger left side Sealing shroud (33), transmission device (32) are located in transmission component supporting box (31), the right side of transmission component supporting box (31) Wall is equipped with the left mounting hole of plunger (35)；The right side of transmission device (32) is equipped with the plunger of an opening to the right and is inserted into hole (34), the radially inner peripheral surface of plunger insertion hole (34) is equipped with and the screw thread on the outer radial periphery surface of the left end of plunger (2) To the screw thread of adaptation；The central axes of the left mounting hole of plunger (35), the central axes of plunger (2), plunger insertion hole (34) central axes On the same line with the central axes of the right mounting hole of plunger (111)；The right end of plunger (2) enters across the right installation set of plunger (14) Cabinets cavity (19), the left end of plunger (2) pass through the left mounting hole of plunger (35) and are inserted into hole with the plunger of transmission device (32) (34) it is threadedly coupled；The left sealing shroud of plunger (33) is sleeved on the right end of plunger (2) and the right side with supporting box (31) Side is connected；The radially inner peripheral surface of the left sealing shroud of plunger (33) is equipped with transmission component sealing device；

Sealing lubrication component includes metallic sleeve gasket (41), non-metallic fibers sealing element (42), lubrication assembly；The right installation set of plunger (14) some is located in the right mounting hole of plunger (111), and a part is located at the left side wall of cabinet (11) with the right side；Plunger (2) Middle part is fixed with the blocking disk (22) that central axes are overlapped with the central axes of plunger (2), the inner hole of the right installation set of plunger (14) The radially inner peripheral surface of right end is equipped with screw thread, and the diameter of the left end of metallic sleeve gasket (41) is less than the diameter of its right end, and metal is close The outer radial periphery surface of the left end of big envelope (41) is equipped with to be adapted with the screw thread of the inner hole of the right end of the right installation set of plunger (14) Screw thread, metallic sleeve gasket (41) connect with the inner hole thread of the right end of the right installation set of plunger (14)；The right installation set of plunger (14) Inner hole in stop disk (22), plunger (2), metallic sleeve gasket (41) composition space in non-metallic fibers sealing element is installed (42)；Pressure spring (21) are connected between non-metallic fibers sealing element (42) and blocking disk (22)；Lubrication assembly includes lubricating oil Bucket (44), oil pump (45), oil water separator (46), the right installation set of plunger (14) quartile in clack box component left side wall with right half Outer radial periphery surface be equipped with a fuel feed hole (47), one close with non-metallic fibers being connected to non-metallic fibers sealing element (42) Sealing (42) connection oil outlet (48), Lubricating oil barrel (44), fuel feed hole (47), oil outlet (48), oil water separator (46) according to It is secondary that closed circuit is connected to form by pipeline (49), pipeline (49) or grease point between Lubricating oil barrel (44) and fuel feed hole (47) Oil pump (45) are equipped with from pipeline (49) between device (46) and Lubricating oil barrel (44).

2. a kind of sealing pressure stabilizing mud pump with plunger as described in claim 1, it is characterised in that: the non-metallic fibers sealing element It (42) is v-seal part；The left and right both ends of non-metallic fibers sealing element (42) are respectively provided with mud retaining ring (43).

3. a kind of sealing pressure stabilizing mud pump with plunger as described in claim 1, it is characterised in that: oil outlet (48) and water-oil separating Pipeline (49) between device (46) is equipped with silt filtering apparatus (410).

4. a kind of sealing pressure stabilizing mud pump with plunger as described in claim 1, it is characterised in that: cabinet (11) equipped with respectively with Liquid inlet hole (110), the valve module mounting hole (17) of the central axes that cabinets cavity (19) is connected on the same line, valve module It is connected outside separate cabinets cavity (19) end of mounting hole (17) and cabinet (11)；The liquid feed valve (15) includes being fixed on liquid Body on hole (110) inlet valve seat (51) and inlet valve (52), inlet valve holddown spring (53), inlet valve holddown spring limit Seat (54)；The water inlet of inlet valve seat (51) is connected with the inlet (12) of cabinet (11)；Inlet valve (52) is arranged in inlet valve On the water outlet of seat (51)；One end of inlet valve holddown spring (53) and the separate inlet valve seat (51) of inlet valve (52) hold phase Even, the other end of inlet valve holddown spring (53) is connected with inlet valve holddown spring limit base (54)；Inlet valve holddown spring limit Position seat (54), inlet valve holddown spring (53) are located in the cabinets cavity (19) of cabinet (11)；

The liquid valve (16) includes the water outlet valve seat (55) being arranged in valve module mounting hole (17), outlet valve (56), water outlet Valve holddown spring (57) compresses valve deck (58)；Water outlet valve seat (55) is fixed on the close cabinets cavity of valve module mounting hole (17) (19) it holds；The side wall for compressing valve deck (58) is equipped with the fluid hole being connected with liquid outlet (13)；It is discharged the water inlet of valve seat (55) It is connected with the cabinets cavity (19) of cabinet (11), outlet valve (56) setting is on the water outlet of water outlet valve seat (55)；Outlet valve Separate water outlet valve seat (55) end of one end of holddown spring (57) and outlet valve (56) is connected, outlet valve holddown spring (57) it is another One end compresses valve deck (58) with one and is connected, and compresses the separate cabinets cavity (19) that valve deck (58) are mounted on valve module mounting hole (17) On end；Inlet valve holddown spring limit base (54) is connected by a connecting spring (59) with water outlet valve seat (55)；Connecting spring (59) rigidity is greater than the rigidity of inlet valve holddown spring (53), water valve holddown spring (57).

5. a kind of sealing pressure stabilizing mud pump with plunger as claimed in claim 4, it is characterised in that: inlet valve seat (51), outlet valve Seat (55) is in circle ring column structure；Inlet valve holddown spring limit base includes inlet valve holddown spring limit base ontology (512) And it is connected to the sleeve of the circle ring column shape at close inlet valve seat (51) end of inlet valve holddown spring limit base ontology (512) (511), separate inlet valve seat (51) end of inlet valve holddown spring (53) and inlet valve holddown spring limit base ontology (512) phase Even and it is located in the sleeve (511) of circle ring column shape.

6. a kind of sealing pressure stabilizing mud pump with plunger as claimed in claim 5, it is characterised in that: valve module mounting hole is pressed on (17) Tight valve deck (58) male screw thread is connected with the fastening screw (510) for the valve deck that is fixed and clamped (58).

7. a kind of sealing pressure stabilizing mud pump with plunger as described in claim 1, it is characterised in that: transmission component sealing device includes It is arranged and is scraped on the inner hole of the left sealing shroud of plunger (33) in the mud-scraping ring (36) of the inner hole left end of the left sealing shroud of plunger (33), setting Oil sealing (37) on the left of mud collar (36).

8. a kind of sealing pressure stabilizing mud pump with plunger as described in claim 1, it is characterised in that: a left side for the right installation set of plunger (14) The outer radial periphery surface at end, which is equipped with, tightens set (18).

9. a kind of sealing pressure stabilizing mud pump with plunger as described in claim 1, it is characterised in that: slush pump includes pressure release component, Pressure release component includes the relief hole (61) being connected to inside and outside cabinet (11) on the side wall of cabinet (11), on relief hole (61) Equipped with valve (62).