CN216617861U

CN216617861U - Novel water seal of plunger pump device

Info

Publication number: CN216617861U
Application number: CN202123325956.3U
Authority: CN
Inventors: 潘昱颖
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-22
Filing date: 2021-12-22
Publication date: 2022-05-27
Anticipated expiration: 2031-12-22

Abstract

The utility model provides a water seal device of a novel plunger pump, and belongs to the technical field of plunger pumps. It has solved the stuffing box and the plunger portion of current plunger pump and has appeared sealed wearing and tearing and reveal the problem that can not in time discover. This novel water seal of plunger pump, including the pump body and gearbox body, the both ends of the pump body have linked firmly the pump cover that has the pump chamber respectively, the plunger that slides and set up has in the pump body between the pump chamber of two pump covers, output shaft in the gearbox body stretches into in the pump body and drives the plunger at the pump body reciprocal sliding displacement between the pump chamber of two pump covers, be provided with between the pump chamber of plunger and the pump cover that corresponds and make plunger and corresponding pump cover form sliding seal's seal assembly, be provided with the detection structure that is used for detecting the pump chamber weeping of pump cover between seal assembly and the pump cover that corresponds. The utility model can find whether leakage exists in time, can lead the water seal seat sleeve and the water seal ring of the plunger dynamic seal mill to be replaced in time, and has convenient disassembly and maintenance, stable structure and convenient use.

Description

Novel water seal of plunger pump device

Technical Field

The utility model belongs to the technical field of plunger pumps, and relates to a water seal device of a novel plunger pump.

Background

Plunger pump generally comprises power end and fluid end, and its power end is rotated by motor drive gearbox, and the output shaft of gearbox drives the plunger and makes reciprocating motion, disposes the business turn over valves in the fluid end, and the valves generally is including being sealed complex disk seat and case, and wherein the case is opened by liquid pressure, relies on the pressure of spring to make the case fall again on the disk seat and realize closing, if chinese patent number is: "201720346329.2", the authorization notice number is: CN206785614U a plunger pump valves, its concrete structure include valve chamber body and open and close the subassembly, open and close the subassembly including be equipped with the passway and fixed connection in the valve plate of valve chamber body inner wall, wear to locate the valve plate and rotate the synchronizing shaft who connects in valve chamber body, radially be fixed in the synchronizing shaft and sealed the rotary valve that cooperates the valve plate, the rotary valve is driven the rotation by the synchronizing shaft and is realized sealing and switching on the passway.

In the structure, the movable valve plate and the valve plate in the opening and closing assembly need to be in gapless fit, the precision requirement of production and manufacturing is better, the production and manufacturing are inconvenient, the existing plunger pump is common equipment for conveying high-viscosity fluid, the pump body and the pump cover of the plunger pump bear huge pressure, and a sealing element in the dynamic seal for plunger movement is easy to damage; for example, Chinese patent numbers are: the "201420807527.0" authorization notice number is: CN204371642U said a seal assembly for plunger pump, its concrete structure is a pump cylinder body with plunger hole and a plunger portion with one end extending into the plunger hole, and also includes a stuffing box and a pressing cover, the stuffing box is cylindrical, one end of the stuffing box extends into the seal chamber, the other end is placed outside the seal chamber, the seal chamber is an annular cavity between the plunger portion and the opposite peripheral surface of the plunger hole, one end of the stuffing box extending into the seal chamber has an annular flange extending radially inward; the outer peripheral surface of the stuffing box is in clearance fit with the inner peripheral surface of the plunger hole; the end face of the annular flange facing the outside of the plunger pump, the inner circumferential surface of the stuffing box and the outer circumferential surface of the plunger part form a stuffing cavity; the center of the pressing cover is provided with a through hole, and the pressing cover is sleeved on the plunger part through the through hole; the anti-seepage sealing device is arranged in the stuffing cavity and is compressed by the compression cover, and the sealing ring is arranged between the stuffing box and the pump cylinder body.

In foretell structure, the sealed effect of this stuffing box and plunger portion is better, nevertheless does not set up the detection structure between this stuffing box and the pump cylinder body, and when using for a long time, this stuffing box and plunger portion appear sealed wearing and tearing and reveal can not in time discover, influence plunger pump's whole use, and structural stability is relatively poor, uses inconveniently.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provides a novel water seal device of a plunger pump, which has the advantages of reasonable and simple structural design, stable structure, capability of immediately finding the abrasion condition of a dynamic seal on a plunger through a detection structure and convenience in use.

The purpose of the utility model can be realized by the following technical scheme: the utility model provides a water seal of novel plunger pump, includes the pump body and the gear box body that links firmly with the pump body, the both ends of the pump body link firmly the pump cover that has the pump chamber respectively, the pump body between the pump chamber of two pump covers has the plunger that slides and set up in, the output shaft in the gear box extend into the pump body and drive the plunger in the pump body and reciprocate sliding displacement between the pump chamber of two pump covers, a serial communication port, the pump chamber of plunger and the pump cover that corresponds between be provided with and make plunger and the pump cover that corresponds form sliding seal's seal assembly, seal assembly and the pump cover that corresponds between be provided with the detection structure that is used for detecting the pump chamber weeping of pump cover.

The water seal device of the novel plunger pump is mainly characterized in that a sealing assembly is arranged between a plunger and a pump cavity of a corresponding pump cover, and the plunger and the corresponding pump cover are sealed in a targeted sliding manner through the sealing assembly, so that the structure is stable, and the sealing effect is good; a detection structure is arranged between the sealing assembly and the corresponding pump cover, so that the sealing condition of the relative sliding seal between the plunger and the corresponding pump cover can be found in time through the detection structure, the structure is stable, and the use is convenient; when the pump is actually used, the pump cavities of the two pump covers slide and displace in a reciprocating manner to enable the pump cavities of the two pump covers to form pressure difference to carry out conveying work in the pump.

In foretell a novel plunger pump's water seal assembly, seal assembly include the water seal seat cover, the pump body on have the outside first butt joint groove that sets up of level, the pump cover on have the inside second butt joint groove that sets up of level, this first butt joint groove and second butt joint groove relative distribution, the water seal seat cover be located between the pump body and the pump cover, the inner of water seal seat cover wear to locate in the first butt joint groove of the pump body, the outer end of water seal seat cover wear to locate in the second butt joint groove of pump cover, the plunger slide and wear to locate the water seal seat cover in, the inner of plunger and water seal seat cover between set up the oil seal ring, the outer end of plunger and water seal seat cover between set up the water seal ring. During actual manufacturing, a circular driving cavity is arranged in the pump body, a first butt joint groove of the pump body is communicated with the driving cavity, and a second butt joint groove of the pump cover is communicated with a pump cavity of the pump cover; set up oil seal ring, water seal ring and enable plunger and the pump body and form effectual relative slip's oil blanket sealed, make plunger and pump cover form effectual relative slip's water seal sealed, stable in structure, it is convenient to produce, make, change.

In foretell water seal of novel plunger pump, the inner wall of the inner of water seal seat cover on have the interior step of assembling, oil seal ring axial assemble in the interior step of assembling of the inner of water seal seat cover on and this oil seal ring radial elasticity supports and leans on and form the movive seal on the plunger, the inner wall of the outer end of water seal seat cover on have the exterior step of assembling, water seal ring axial assemble in the exterior step of assembling of the outer end of water seal seat cover on and this water seal ring radial elasticity supports and leans on and forms the movive seal on the plunger. When actual manufacturing, this water seal ring's quantity sets up two, and these two water seal ring axial support lean on distribute on the outer assembly step of the outer end of water seal seat cover, and the purpose that sets up like this ensures to form good leakproofness between the outer end of water seal seat cover and the plunger, stable in structure, and sealed effect is better.

In foretell a novel plunger pump's water seal arrangement, the outer wall of the outer end of water seal seat cover on be provided with the ring channel, the ring channel in be provided with the sealing washer, when the outer end of water seal seat cover wears to establish the second butt joint groove of assembly in the pump cover, the cell wall in the second butt joint groove of this sealing washer and pump cover forms static seal. The purpose of setting up like this is to ensure the leakproofness between pump cover and the water seal seat cover, has good sealing performance, stable in structure.

In foretell water seal arrangement of novel plunger pump, the outer wall at the middle part that detects the structure and include the water seal seat cover on have the annular and detect the groove, the annular of water seal seat cover detect the tank bottom circumference interval distribution in groove and have the apopore that radially runs through the setting, the cell wall in the first butt joint groove of the pump body on be provided with the hole that leaks, the apopore of water seal seat cover and the hole intercommunication that leaks of the cell wall in the first butt joint groove of the pump body. When the pump is used for a long time, the situation that sealing is not tight between the plunger and the pump cover can be presumed by liquid flowing out of the water leakage hole in the groove wall of the first butt joint groove of the pump body, the pump cover can be detached on the pump body, and the water seal ring between the plunger and the water seal seat cover is replaced.

In the water seal device of the novel plunger pump, the middle position of the plunger is provided with a drive groove which is arranged in an inwards concave manner, an eccentric wheel is arranged in the drive groove, and an output shaft in the speed changing box body extends into the pump body and is fixedly connected with the eccentric wheel in the axial direction. In actual use, the output shaft in the gearbox body drives the plunger to perform reciprocating sliding displacement in the pump body through the rotation of the eccentric wheel and the abutting fit of the driving groove of the plunger.

Compared with the prior art, the water seal device of the novel plunger pump has the advantages that: structural design is reasonable, simple, and the static seal effect of this water seal seat cover and pump cover and the dynamic seal effect of this water seal seat cover and plunger are better, are provided with on the water seal seat cover and detect the apopore and be used for detecting the condition that water seal seat cover and plunger dynamic seal wearing and tearing were revealed, can in time discover whether to have and reveal, enable the water seal ring that water seal seat cover and plunger dynamic seal ground to obtain in time changing, dismantle easy maintenance, stable in structure, convenient to use.

Drawings

Fig. 1 is a schematic sectional structure diagram of a water seal device of the novel plunger pump.

Fig. 2 is a schematic sectional structure diagram of the water seal device of the plunger pump.

Fig. 3 is a schematic sectional structure view of the water seal seat sleeve in the water seal device of the plunger pump.

In the figure, 1, a pump body; 2. a transmission case; 3. a pump chamber; 4. a pump cover; 5. a plunger; 6. a water seal seat sleeve; 7. an oil seal ring; 8. a water seal ring; 9. a seal ring; 10. an annular detection groove; 11. a water outlet hole; 12. a water leakage hole; 13. an eccentric wheel.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1, fig. 2 and fig. 3, the water seal device of the novel plunger 5 pump mainly comprises a pump body 1 and a transmission case body 2, wherein the pump body 1 is a hydraulic end, the transmission case body 2 is a power end, the pump body 1 is fixedly connected with the transmission case body 2, two ends of the pump body 1 are fixedly connected with pump covers 4 with pump cavities 3 respectively, a plunger 5 which is arranged in a sliding manner is arranged in the pump body 1 between the pump cavities 3 of the two pump covers 4, an output shaft in the transmission case body 2 extends into the pump body 1 and drives the plunger 5 to perform reciprocating sliding displacement between the pump cavities 3 of the two pump covers 4 in the pump body 1, and a sealing assembly which enables the plunger 5 and the corresponding pump cover 4 to form sliding sealing is arranged between the plunger 5 and the pump cavity 3 of the corresponding pump cover 4; in actual manufacturing, the specific implementation structure of the sealing assembly is as follows: the pump mainly comprises a water seal seat sleeve 6, wherein a first butt joint groove which is horizontally arranged outwards is formed in a pump body 1, a second butt joint groove which is horizontally arranged inwards is formed in a pump cover 4, the first butt joint groove and the second butt joint groove are distributed oppositely, the water seal seat sleeve 6 is positioned between the pump body 1 and the pump cover 4, the inner end of the water seal seat sleeve 6 is arranged in the first butt joint groove of the pump body 1 in a penetrating mode, the outer end of the water seal seat sleeve 6 is arranged in the second butt joint groove of the pump cover 4 in a penetrating mode, a plunger 5 is arranged in the water seal seat sleeve 6 in a sliding mode, an oil seal ring 7 is arranged between the plunger 5 and the inner end of the water seal seat sleeve 6, and a water seal ring 8 is arranged between the plunger 5 and the outer end of the water seal seat sleeve 6; specifically, an inner assembly step is arranged on the inner wall of the inner end of the water seal seat sleeve 6, the oil seal ring 7 is axially assembled on the inner assembly step of the inner end of the water seal seat sleeve 6, the oil seal ring 7 radially and elastically abuts against the plunger 5 to form dynamic seal, an outer assembly step is arranged on the inner wall of the outer end of the water seal seat sleeve 6, the water seal ring 8 is axially assembled on the outer assembly step of the outer end of the water seal seat sleeve 6, and the water seal ring 8 radially and elastically abuts against the plunger 5 to form dynamic seal; an annular groove is formed in the outer wall of the outer end of the water seal seat sleeve 6, a sealing ring 9 is arranged in the annular groove, and when the outer end of the water seal seat sleeve 6 is arranged in the second butt joint groove of the pump cover 4 in a penetrating mode, the sealing ring 9 and the groove wall of the second butt joint groove of the pump cover 4 form static sealing.

During actual manufacturing, a detection structure for detecting leakage of the pump cavity 3 of the pump cover 4 is arranged between the sealing assembly and the corresponding pump cover 4; the specific implementation mode of the detection structure is as follows: the outer wall in the middle of water seal seat cover 6 is provided with an annular detection groove 10, the circumferential interval distribution of the groove bottom of the annular detection groove 10 of the water seal seat cover 6 is provided with water outlet holes 11 which radially penetrate through the detection groove, the groove wall of the first butt joint groove of the pump body 1 is provided with water leakage holes 12, and the water outlet holes 11 of the water seal seat cover 6 are communicated with the water leakage holes 12 of the groove wall of the first butt joint groove of the pump body 1.

In actual manufacturing, a drive groove which is arranged in a concave manner is formed in the middle of the plunger 5, an eccentric wheel 13 is arranged in the drive groove, and an output shaft in the gearbox body 2 extends into the pump body 1 and is axially and fixedly connected with the eccentric wheel 13.

Those not described in detail in this specification are within the skill of the art. The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Claims

1. A water seal device of a novel plunger pump comprises a pump body (1) and a gearbox body (2) fixedly connected with the pump body (1), two ends of the pump body (1) are respectively fixedly connected with pump covers (4) with pump cavities (3), a plunger (5) which is arranged in a sliding way is arranged in the pump body (1) between the pump cavities (3) of the two pump covers (4), an output shaft in the gearbox body (2) extends into the pump body (1) and drives a plunger (5) to perform reciprocating sliding displacement between pump cavities (3) of the two pump covers (4) in the pump body (1), it is characterized in that a sealing component which leads the plunger (5) and the corresponding pump cover (4) to form sliding seal is arranged between the plunger (5) and the pump cavity (3) of the corresponding pump cover (4), and a detection structure for detecting leakage of the pump cavity (3) of the pump cover (4) is arranged between the sealing assembly and the corresponding pump cover (4).

2. The water seal device of the novel plunger pump according to claim 1, the sealing assembly comprises a water seal seat sleeve (6), a first butt joint groove which is horizontally arranged outwards is arranged on the pump body (1), a second butt joint groove which is horizontally arranged inwards is arranged on the pump cover (4), the first butt joint groove and the second butt joint groove are distributed oppositely, the water seal seat sleeve (6) is positioned between the pump body (1) and the pump cover (4), the inner end of the water seal seat sleeve (6) is arranged in the first butt joint groove of the pump body (1) in a penetrating way, the outer end of the water seal seat sleeve (6) is arranged in the second butt joint groove of the pump cover (4) in a penetrating way, the plunger (5) is slidably arranged in the water seal seat sleeve (6) in a penetrating way, an oil seal ring (7) is arranged between the plunger (5) and the inner end of the water seal seat sleeve (6), and a water seal ring (8) is arranged between the outer ends of the plunger (5) and the water seal seat sleeve (6).

3. The water seal device of a novel plunger pump according to claim 2, characterized in that the inner wall of the inner end of the water seal seat cover (6) is provided with an inner assembling step, the oil seal ring (7) is axially assembled on the inner assembling step of the inner end of the water seal seat cover (6) and the oil seal ring (7) radially and elastically abuts against the plunger (5) to form dynamic seal, the inner wall of the outer end of the water seal seat cover (6) is provided with an outer assembling step, the water seal ring (8) is axially assembled on the outer assembling step of the outer end of the water seal seat cover (6) and the water seal ring (8) radially and elastically abuts against the plunger (5) to form dynamic seal.

4. The water seal assembly of a novel plunger pump according to claim 3, characterized in that the outer wall of the outer end of the water seal seat cover (6) is provided with an annular groove, the annular groove is internally provided with a sealing ring (9), and when the outer end of the water seal seat cover (6) is arranged in the second butt joint groove of the pump cover (4) in a penetrating manner, the sealing ring (9) and the groove wall of the second butt joint groove of the pump cover (4) form a static seal.

5. The water seal assembly of a novel plunger pump according to claim 4, wherein the detection structure comprises an annular detection groove (10) formed in the outer wall of the middle portion of the water seal seat sleeve (6), water outlet holes (11) radially penetrating the detection groove (10) are circumferentially distributed at intervals at the bottom of the annular detection groove of the water seal seat sleeve (6), water leakage holes (12) are formed in the groove wall of the first butt joint groove of the pump body (1), and the water outlet holes (11) of the water seal seat sleeve (6) are communicated with the water leakage holes (12) in the groove wall of the first butt joint groove of the pump body (1).

6. The water seal assembly of a novel plunger pump according to claim 5, wherein a drive groove is concavely arranged in the middle of the plunger (5), an eccentric wheel (13) is arranged in the drive groove, and an output shaft in the gearbox body (2) extends into the pump body (1) and is axially fixedly connected with the eccentric wheel (13).