CN214616994U

CN214616994U - Strong sealed axial variable plunger pump box

Info

Publication number: CN214616994U
Application number: CN202120679964.9U
Authority: CN
Inventors: 阮思群; 田潇雅
Original assignee: WENLING DAZHONG PRECISION MACHINERY CO Ltd
Current assignee: WENLING DAZHONG PRECISION MACHINERY CO Ltd
Priority date: 2021-04-02
Filing date: 2021-04-02
Publication date: 2021-11-05
Anticipated expiration: 2031-04-02

Abstract

The utility model belongs to the field of plunger pumps, in particular to a strong-sealing axial variable plunger pump box body, which comprises a plunger pump box body sealing component; a sealing assembly is arranged at the connecting port of the plunger pump box body and the oil pipe; the sealing assembly comprises a pipe body, an oil sealing structure, a supporting rod, a fixing ring and a bolt sleeve; the plunger pump comprises a plunger pump box body, a plunger pump and a fixing device, wherein the side face of the plunger pump box body is fixedly connected with a pipe body, an inner ring at an opening of the pipe body is provided with a mounting groove, the bottom surface of the mounting groove is fixedly connected with a plurality of supporting rods, an oil liquid sealing structure is slidably mounted in the mounting groove, an outer ring of each supporting rod slidably penetrates through the oil liquid sealing structure, an outer ring at the top end of each supporting rod is provided with threads, an inner ring at the top of the mounting groove is slidably mounted with a fixing ring, the fixing ring is provided with a plurality of fixing holes, bolt sleeves are slidably mounted in the fixing holes, and inner rings of the bolt sleeves are in threaded fit with outer rings of the supporting rods; the plunger pump is prevented from being damaged due to the fact that oil in the plunger pump box body leaks out from the oil pipe joint.

Description

Strong sealed axial variable plunger pump box

Technical Field

The utility model relates to a plunger pump field specifically is a strong sealed axial variable plunger pump box.

Background

The plunger pump realizes oil absorption and oil pressing by means of the volume change of the sealed working cavity through the reciprocating motion of the plunger in the cylinder body.

In the process of oil absorption and oil pressing of the plunger pump, the pressure of a working cavity in a plunger pump box body is continuously changed, and a sealing piece at the connecting part of the plunger pump box body and an oil pipe is extremely easy to damage in an environment with continuously changed pressure, so that the oil in the plunger pump box body is leaked, and the plunger pump is damaged; therefore, a strongly sealed axial variable displacement plunger pump casing is proposed to address the above problems.

SUMMERY OF THE UTILITY MODEL

In order to compensate prior art not enough, the pressure that the work in the plunger pump box was held the chamber is constantly changing, and the sealing member of plunger pump box and oil pipe junction is very easily damaging in the environment that pressure constantly changes for the fluid in the plunger pump box takes place the earial drainage, causes the problem of the damage of plunger pump, the utility model provides a strong sealed axial variable plunger pump box.

The utility model provides a technical scheme that its technical problem adopted is: the utility model discloses a strong sealed axial variable plunger pump box body, which comprises a plunger pump box body sealing component; a sealing assembly is arranged at the connecting port of the plunger pump box body and the oil pipe;

the sealing assembly comprises a pipe body, an oil sealing structure, a supporting rod, a fixing ring and a bolt sleeve; the plunger pump comprises a plunger pump box body, a plunger pump and a fixing device, wherein the side face of the plunger pump box body is fixedly connected with a pipe body, an inner ring at an opening of the pipe body is provided with a mounting groove, the bottom surface of the mounting groove is fixedly connected with a plurality of supporting rods, an oil liquid sealing structure is slidably mounted in the mounting groove, an outer ring of each supporting rod slidably penetrates through the oil liquid sealing structure, an outer ring at the top end of each supporting rod is provided with threads, an inner ring at the top of the mounting groove is slidably mounted with a fixing ring, the fixing ring is provided with a plurality of fixing holes, bolt sleeves are slidably mounted in the fixing holes, and inner rings of the bolt sleeves are in threaded fit with outer rings of the supporting rods; the plunger pump is prevented from being damaged due to the fact that oil in the plunger pump box body leaks out from the oil pipe joint.

Preferably, the oil sealing structure comprises an oil sealing ring, a storage cavity is formed in the inner outer ring of the oil sealing ring, a plurality of annular grooves are formed in the inner ring of the oil sealing ring, a plurality of through holes are formed in the side wall between the storage cavity and the annular grooves, and sealing oil is filled in the storage cavity and the annular grooves; the laminating degree between fluid sealing ring and the oil pipe has been improved, the probability that the fluid seepage was come out has further been avoided.

Preferably, the oil sealing ring is provided with a plurality of sliding holes, and the inner rings of the sliding holes are sleeved on the outer ring of the supporting rod; the firmness of the oil sealing ring is improved.

Preferably, a compression ring is slidably mounted inside the mounting groove, a plurality of holes are formed in the compression ring, an inner ring of each hole is sleeved on an outer ring of the support rod, a locking nut is mounted on an outer ring of the middle of the support rod in a threaded manner, an outer ring of the bottom of the locking nut is sleeved on the inner ring of each hole, the bottom surface of the top of the locking nut extrudes the top surface of the compression ring, and the bottom surface of the compression ring extrudes the top surface of the oil sealing ring; further improve the firm degree of fluid sealing ring, better improvement fluid sealing ring's sealed effect.

Preferably, the bottom surface of the fixing ring is provided with a plurality of circular grooves, the circular grooves and the fixing holes are in the same center line, the circular grooves are communicated with the fixing holes, the inner ring of each circular groove is sleeved on the outer ring of the locking nut, and the top surface of each circular groove is fixedly connected with a rubber sealing ring; the practicability of the sealing assembly is improved, and the overall sealing effect of the sealing assembly is further improved.

Preferably, a plurality of partition plates are fixedly connected with the storage cavity and the inner part of the annular groove, and the partition plates and the through holes are alternately distributed; the leakage caused by the local damage of the oil sealing ring is avoided, and the overall safety of the sealing assembly is further improved.

The utility model discloses an useful part lies in:

1. the storage cavity and the ring groove formed in the oil sealing ring are used for storing sealing oil, when the pressure in the plunger pump box is increased, the ring groove is contracted, so that the sealing oil enters the storage cavity through the through hole, and when the pressure in the plunger pump box is reduced, the ring groove is expanded, so that the sealing oil enters the ring groove, the attaching degree between the oil sealing ring and the oil pipe is improved, and the probability of oil leakage is further avoided;

2. the oil sealing ring is pressed and fixed through the locking nut matched with the pressing ring, so that the firmness degree of the oil sealing ring is further improved, and the sealing effect of the oil sealing ring is better improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.

FIG. 1 is a schematic overall structure diagram according to a first embodiment;

FIG. 2 is a cross-sectional view of a seal assembly according to the first embodiment;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is a cross-sectional view of the seal assembly of the second embodiment;

fig. 5 is a partially enlarged view of B in fig. 4.

In the figure: 1. a plunger pump box body; 201. a pipe body; 202. mounting grooves; 203. a support bar; 204. a fixing ring; 205. a bolt sleeve; 206. an oil sealing ring; 207. a storage chamber; 208. a ring groove; 209. a through hole; 210. a slide hole; 211. pressing a ring; 212. locking the nut; 213. a circular groove; 214. a rubber seal ring; 215. a partition plate; 216. and (4) stretching the groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example one

Referring to fig. 1-3, a strong-sealing axial variable plunger pump casing includes a plunger pump casing 1 and a sealing assembly; a sealing assembly is arranged at the connecting port of the plunger pump box body 1 and the oil pipe;

the sealing assembly comprises a pipe body 201, an oil sealing structure, a supporting rod 203, a fixing ring 204 and a bolt sleeve 205; a pipe body 201 is fixedly connected to the side face of the plunger pump box body 1, an installation groove 202 is formed in the inner ring of the opening of the pipe body 201, a plurality of support rods 203 are fixedly connected to the bottom face of the installation groove 202, an oil liquid sealing structure is slidably installed inside the installation groove 202, the outer ring of each support rod 203 slidably penetrates through the oil liquid sealing structure, threads are formed in the outer ring of the top end of each support rod 203, a fixing ring 204 is slidably installed on the inner ring of the top of the installation groove 202, a plurality of fixing holes are formed in the fixing ring 204, a bolt sleeve 205 is slidably installed inside each fixing hole, and the inner ring of the bolt sleeve 205 is in threaded fit with the outer ring of each support rod 203; because the plunger pump is in the oil absorption, the in-process of pressing oil, the pressure of the work appearance chamber in the plunger pump box 1 is constantly changing, the sealing member of plunger pump box 1 and oil pipe junction, it is very easy to damage in the environment that pressure constantly changes, make the fluid in the plunger pump box 1 take place the earial drainage, cause the damage of plunger pump, therefore, through the opening part that bolt cover 205 cooperation bracing piece 203 will fix solid fixed ring 204 to mounting groove 202, make the fluid seal structure fix the bottom at mounting groove 202, make the plunger pump box 1 and oil pipe junction seal completely, thereby avoided the fluid in the plunger pump box 1 to leak out from the oil pipe junction, cause the damage of plunger pump.

The oil sealing structure comprises an oil sealing ring 206, a storage cavity 207 is formed in the outer ring of the oil sealing ring 206, a plurality of annular grooves 208 are formed in the inner ring of the oil sealing ring 206, a plurality of through holes 209 are formed in the side wall between the storage cavity 207 and the annular grooves 208, and sealing oil is filled in the storage cavity 207 and the annular grooves 208; storage chamber 207 and annular 208 storage sealing oil that offer through fluid sealing ring 206, when the pressure increase in the plunger pump box 1, annular 208 contracts for in sealing oil gets into storage chamber 207 through-hole 209, after the pressure reduction in the plunger pump box 1, annular 208 diastole, make sealing oil in getting into annular 208, thereby improved the laminating degree between fluid sealing ring 206 and the oil pipe, then further avoided the probability that fluid seepage came out.

The oil liquid sealing ring 206 is provided with a plurality of sliding holes 210, and the inner rings of the sliding holes 210 are sleeved on the outer rings of the supporting rods 203; through the sliding fit between the slide hole 210 and the support rod 203, the oil seal ring 206 is fixed at the bottom of the mounting groove 202, and therefore the firmness of the oil seal ring 206 is improved.

A press ring 211 is slidably mounted in the mounting groove 202, a plurality of holes are formed in the press ring 211, the inner rings of the holes are sleeved on the outer ring of the support rod 203, a locking nut 212 is mounted on the outer ring of the middle of the support rod 203 in a threaded manner, the outer ring of the bottom of the locking nut 212 is sleeved on the inner ring of the holes, the bottom surface of the top of the locking nut 212 extrudes the top surface of the press ring 211, and the bottom surface of the press ring 211 extrudes the top surface of the oil sealing ring 206; compress tightly oil liquid sealing ring 206 fixedly through lock nut 212 cooperation clamping ring 211 to further improved oil liquid sealing ring 206's firm degree, then better improvement oil liquid sealing ring 206's sealed effect.

The bottom surface of the fixing ring 204 is provided with a plurality of circular grooves 213, the circular grooves 213 and the fixing holes are in the same center line, the circular grooves 213 are communicated with the fixing holes, the inner ring of the circular groove 213 is sleeved on the outer ring of the locking nut 212, and the top surface of the circular groove 213 is fixedly connected with a rubber sealing ring 214; the collision between the fixing ring 204 and the locking nut 212 is avoided through the round groove 213, so that the practicability of the sealing assembly is improved; through the rubber sealing ring 214, the overall sealing effect of the sealing assembly is further improved.

A plurality of partition plates 215 are fixedly connected inside the storage cavity 207 and the annular groove 208, and the partition plates 215 and the through holes 209 are alternately distributed; through the baffle 215 that sets up, separate into a plurality of individual cavitys with storage chamber 207 and annular 208 to avoided causing the emergence of seepage because of the local damage of fluid sealing ring 206, further improved seal assembly's whole security then.

Example two

Referring to fig. 4 to 5, as another implementation manner of the present invention, in a first comparative example, a plurality of stretching grooves 216 are formed in a bottom surface of the mounting groove 202, and an inner portion of each stretching groove 216 is slidably engaged with a bottom surface of the oil sealing ring 206; through the stretching groove 216, the oil sealing ring 206 can be expanded, so that the damage to the oil sealing ring 206 caused by overlarge pressure in the plunger pump box body 1 is avoided.

The working principle is as follows: firstly, inserting an oil sealing ring 206 into a mounting groove, enabling a sliding hole 210 to be sleeved on the outer ring of a supporting rod 203, then installing a pressing ring 211 on the top of the oil sealing ring 206, enabling a hole of the pressing ring 211 to be sleeved on the outer ring of the supporting rod 203, screwing a locking nut 212 on a threaded area of the supporting rod 203, pressing and fixing the pressing ring 211, then installing a fixing ring 204 into the mounting groove, enabling the supporting rod 203 to be inserted into a fixing hole of the fixing ring 204, screwing a bolt sleeve 205 on the top of the supporting rod 203, and locking and fixing the fixing ring 204;

afterwards, when the pressure in the plunger pump box body 1 is increased, the ring groove 208 contracts, so that the sealing oil enters the storage cavity 207 through the through hole 209, and after the pressure in the plunger pump box body 1 is reduced, the ring groove 208 expands, so that the sealing oil enters the ring groove 208, so that the attaching degree between the oil sealing ring 206 and the oil pipe is improved, the probability of oil leakage is avoided, and the sealing performance of the plunger pump box body 201 is improved.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.

Claims

1. The utility model provides a strong sealed axial variable plunger pump box which characterized in that: comprises a sealing component of a plunger pump box body (1); a sealing assembly is arranged at the connecting port of the plunger pump box body (1) and the oil pipe;

the sealing assembly comprises a pipe body (201), an oil sealing structure, a supporting rod (203), a fixing ring (204) and a bolt sleeve (205); the utility model provides a plunger pump box, including plunger pump box body (1), side rigid coupling body (201), mounting groove (202) are seted up to the opening part inner circle of body (201), a plurality of bracing pieces (203) of bottom surface rigid coupling of mounting groove (202), the inside slidable mounting fluid seal structure of mounting groove (202), the outer lane of bracing piece (203) slides and runs through fluid seal structure, the screw thread is seted up to the top outer lane of bracing piece (203), the solid fixed ring (204) of top inner circle slidable mounting of mounting groove (202), gu fixed ring (204) set up a plurality of fixed orificess, the inside slidable mounting bolt cover (205) of fixed orifices, the inner circle of bolt cover (205) and the outer lane screw-thread fit of bracing piece (203).

2. A strong sealed axial variable displacement plunger pump casing as claimed in claim 1, wherein: the fluid seal structure includes fluid sealing ring (206), storage chamber (207) is seted up to the inside outer lane of fluid sealing ring (206), a plurality of annuluses (208) are seted up to the inside inner circle of fluid sealing ring (206), a plurality of through-holes (209) are seted up to the lateral wall between storage chamber (207) and annuluses (208), storage chamber (207) has sealed oil with the inside filling of annuluses (208).

3. A strong sealed axial variable displacement plunger pump casing as claimed in claim 2, wherein: the oil sealing ring (206) is provided with a plurality of sliding holes (210), and the inner rings of the sliding holes (210) are sleeved on the outer ring of the supporting rod (203).

4. A strong sealed axial variable displacement plunger pump casing as claimed in claim 2, wherein: the inside slidable mounting clamping ring (211) of mounting groove (202), a plurality of holes are seted up in clamping ring (211), the inner circle in hole overlaps the outer lane at bracing piece (203), middle part outer lane screw thread installation lock nut (212) of bracing piece (203), the inner circle in hole is overlapped in the bottom outer lane of lock nut (212), the top surface of top bottom surface extrusion clamping ring (211) of lock nut (212), the top surface of the bottom surface extrusion fluid sealing ring (206) of clamping ring (211).

5. A strong sealed axial variable displacement plunger pump casing as claimed in claim 4, wherein: a plurality of circular grooves (213) are formed in the bottom surface of the fixing ring (204), the circular grooves (213) and the fixing holes are in the same center line, the circular grooves (213) are communicated with the fixing holes, the inner ring of each circular groove (213) is sleeved on the outer ring of the corresponding locking nut (212), and the top surface of each circular groove (213) is fixedly connected with a rubber sealing ring (214).

6. A strong sealed axial variable displacement plunger pump casing as claimed in claim 5, wherein: the storage cavity (207) and the annular groove (208) are fixedly connected with a plurality of partition plates (215), and the partition plates (215) and the through holes (209) are alternately distributed.