CN210623067U

CN210623067U - Piston rod of hard alloy plunger pump

Info

Publication number: CN210623067U
Application number: CN201921483996.0U
Authority: CN
Inventors: 雷林
Original assignee: Xingyu Cemented Carbide Tooling Co ltd
Current assignee: Xingyu Cemented Carbide Tooling Co ltd
Priority date: 2019-09-08
Filing date: 2019-09-08
Publication date: 2020-05-26
Anticipated expiration: 2029-09-08

Abstract

The utility model discloses a carbide plunger pump piston stick, including the piston stick, the outside cover of piston stick is equipped with the piston bush, the top cover that the outside of piston stick is located the piston bush is equipped with fixed sliding sleeve, two sets of fixed screws have been seted up to the outside bilateral symmetry of fixed sliding sleeve, and the inboard of two sets of fixed screws all is connected with fixing screw through the screw thread closure soon, the inside one side equidistance that is close to fixing screw sets up the preformed hole that the multiunit is vertical distribution of piston stick. The utility model discloses in, at first, wholly adopt integrated configuration, can realize the regulation of piston stick axial length and handle, the regulation installation of the actual helical pitch of the plunger pump of both being convenient for is used, has also promoted the suitability of piston stick simultaneously, secondly, and inside is provided with locking formula fixed knot and constructs, and the fixed processing after the piston stick axial length of being convenient for adjusts, and the operator's of both being convenient for daily operation uses, has also promoted the piston stick simultaneously and has adjusted the stability of after-fixing.

Description

Piston rod of hard alloy plunger pump

Technical Field

The utility model relates to a plunger pump subassembly technical field especially relates to a carbide plunger pump piston rod.

Background

The plunger pump is an important device of the hydraulic system. The plunger reciprocates in the cylinder body to change the volume of the sealed working cavity so as to absorb and press oil. The plunger pump has the advantages of high rated pressure, compact structure, high efficiency, convenient flow regulation and the like.

However, the existing piston rod for the plunger pump still has the defects that: adopt integral type structure mostly, be difficult to carry out piston rod axial length's regulation and fixed processing, the regulation installation of the actual helical pitch of plunger pump of being not convenient for is used, and the suitability is relatively poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the hard alloy plunger pump piston rod is provided in order to solve the problems that the axial length of the conventional plunger pump piston rod is difficult to adjust and fix, and the actual lead of the plunger pump is inconvenient to adjust, install and use.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a carbide plunger pump piston stick, includes the piston stick, the outside cover of piston stick is equipped with the piston bush, the top cover that the outside of piston stick is located the piston bush is equipped with fixed sliding sleeve, two sets of fixed screws have been seted up to fixed sliding sleeve's outside bilateral symmetry, and the inboard of two sets of fixed screws all is connected with fixing stud through the screw thread closure soon, the inside of piston stick is close to one side equidistance of fixing stud and has seted up the preformed hole that the multiunit is vertical distribution, and the internal diameter of preformed hole equals fixing stud's external diameter.

As a further description of the above technical solution:

the piston rod and the piston sleeve are in transition fit.

As a further description of the above technical solution:

the inner side of the fixed sliding sleeve is symmetrically and fixedly connected with two groups of limiting blocks which protrude inwards.

As a further description of the above technical solution:

and one side of the inside of the piston rod, which is close to the two sets of limiting blocks, is provided with a limiting groove which is vertically distributed.

As a further description of the above technical solution:

and the outer side of the top end of the piston sleeve is provided with an external thread.

As a further description of the above technical solution:

and the inner side of the bottom end of the fixed sliding sleeve is provided with an internal thread matched with the external thread for use.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses in, wholly adopt integrated configuration, this device is whole by the piston stick, piston sleeve and fixed sliding sleeve triplex, the piston stick is when the inside slip regulation that carries out vertical direction of piston sleeve, alright carry out the regulation of the whole length of piston stick and handle, adjust and handle the back, the junction between accessible fixed sliding sleeve and the piston sleeve is fixed and is handled, the regulation of the excellent axial length of piston can be realized to this kind of structure and is handled, the regulation installation of the actual helical pitch of plunger pump of both being convenient for has also promoted the suitability of piston stick simultaneously.

2. In the utility model, a locking type fixing structure is arranged inside, a fixing screw hole is arranged inside the fixing sliding sleeve, and a fixing stud is arranged at the inner side of the fixing screw hole, meanwhile, a plurality of groups of preformed holes are arranged in the piston rod, the fixed sliding sleeve is adjusted to slide outside the piston rod in the vertical direction, after the fixed sliding sleeve is adjusted to a proper length, the fixing screw bolt inside the fixing screw hole can be rotated inwards, the fixing screw bolt can slide into the reserved hole at the designated position, the fixing treatment between the piston rod and the fixing sliding sleeve is completed, then the fixing sliding sleeve is screwed on the external thread on the piston sleeve through the internal thread, the fixing treatment between the fixing sliding sleeve and the piston sleeve is completed, the structure is convenient for the fixation treatment after the axial length of the piston rod is adjusted, is convenient for the daily operation of operators to use, and simultaneously improves the stability of the fixation after the adjustment of the piston rod.

Drawings

Fig. 1 shows a schematic perspective view of a structure provided according to an embodiment of the present invention;

fig. 2 shows a schematic cross-sectional structure diagram provided according to an embodiment of the present invention;

fig. 3 shows a schematic cross-sectional view of a piston rod and a fixed sliding sleeve provided according to an embodiment of the present invention.

Illustration of the drawings:

1. a piston rod; 101. a limiting groove; 102. reserving a hole; 2. a piston sleeve; 201. an external thread; 3. fixing the sliding sleeve; 301. a limiting block; 302. fixing screw holes; 303. an internal thread; 4. and fixing the stud.

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 of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a carbide plunger pump piston stick, including piston stick 1, the outside cover of piston stick 1 is equipped with piston bush 2, the outside top cover that is located piston bush 2 of piston stick 1 is equipped with fixed sliding sleeve 3, two sets of fixed screw 302 have been seted up to the outside bilateral symmetry of fixed sliding sleeve 3, and the inboard of two sets of fixed screw 302 all is connected with fixing stud 4 through the screw thread closure, the inside one side equidistance that is close to fixing stud 4 of piston stick 1 has seted up the preformed hole 102 that the multiunit is vertical distribution, and the internal diameter of preformed hole 102 equals fixing stud 4's external diameter.

Specifically, as shown in fig. 1 and fig. 2, piston stick 1 and piston sleeve 2 are transition fit, the chooseing for use of transition fit mode, the production of rocking and skew phenomenon between piston stick 1 and the piston sleeve 2 has been reduced, thereby the stability that piston stick 1 and piston sleeve 2 are connected has been promoted, two sets of inside bellied stopper 301 of inboard symmetry fixedly connected with of fixed sliding sleeve 3, the spacing groove 101 that is vertical distribution has all been seted up to one side that the inside of piston stick 1 is close to two sets of stopper 301, the setting of stopper 301 and spacing groove 101, the production of fixed sliding sleeve 3 at the outside rotation slip phenomenon of piston stick 1 has been reduced, thereby the stability of connecting between fixed sliding sleeve 3 and the piston stick 1 has been promoted.

Specifically, as shown in fig. 1 and 3, the external thread 201 is provided on the outside of the top end of the piston sleeve 2, the internal thread 303 used in cooperation with the external thread 201 is provided on the inside of the bottom end of the fixed sliding sleeve 3, and the external thread 201 and the internal thread 303 are provided to facilitate screwing and fixing between the fixed sliding sleeve 3 and the piston sleeve 2.

The working principle is as follows: during the use, according to the actual conditions of piston pump helical pitch, slide fixed sliding sleeve 3 to the spacing groove 101 on the piston stick 1 through stopper 301 in, and carry out the sliding adjustment of vertical direction with fixed sliding sleeve 3 in the outside of piston stick 1, adjust to suitable length after, with the inboard fixing screw bolt 4 of fixed screw hole 302 internal rotation, fixing screw bolt 4 just can screw in the preformed hole 102 of the inside assigned position department of piston stick 1, just accomplished the regulation fixed processing between piston stick 1 and the fixed sliding sleeve 3, again with fixed sliding sleeve 3 through internal thread 303, close soon to the external screw thread 201 at piston bush 2 top, just accomplished the fixed processing of closing soon between fixed sliding sleeve 3 and piston bush 2, just accomplished the regulation processing of piston stick 1 axial length, alright with piston stick 1 integrated into the inside of plunger pump.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a carbide plunger pump piston stick, includes piston stick (1), its characterized in that, the outside cover of piston stick (1) is equipped with piston sleeve (2), the top cover that the outside of piston stick (1) is located piston sleeve (2) is equipped with fixed sliding sleeve (3), two sets of fixed screw (302) have been seted up to the outside bilateral symmetry of fixed sliding sleeve (3), and the inboard of two sets of fixed screw (302) all is connected with fixing stud (4) through the screw thread closure soon, one side equidistance that the inside of piston stick (1) is close to fixing stud (4) is seted up the multiunit and is the preformed hole (102) of vertical distribution, and the internal diameter of preformed hole (102) equals the external diameter of fixing stud (4).

2. A cemented carbide plunger pump piston rod according to claim 1, characterized in that the piston rod (1) and the piston sleeve (2) are transition fitted.

3. The piston rod of the hard alloy plunger pump according to claim 1, characterized in that two sets of limiting blocks (301) protruding inwards are symmetrically and fixedly connected to the inner side of the fixed sliding sleeve (3).

4. The piston rod of the hard alloy plunger pump according to claim 3, wherein one side of the interior of the piston rod (1) close to the two sets of limiting blocks (301) is provided with vertically distributed limiting grooves (101).

5. The piston rod of the hard alloy plunger pump as claimed in claim 1, wherein the piston sleeve (2) is externally threaded (201) on the top end.

6. The piston rod of the hard alloy plunger pump as claimed in claim 5, wherein the inner side of the bottom end of the fixed sliding sleeve (3) is provided with an internal thread (303) which is matched with the external thread (201) for use.