CN219692244U - Piston - Google Patents

Abstract

The utility model relates to the technical field of diaphragm pump accessories, and provides a piston which comprises a mounting cylinder with an opening at one side, wherein a column-shaped hole is formed in one side, far away from the opening, of the mounting cylinder, two symmetrical connecting rods are fixedly connected to one side of the mounting cylinder, a limit sleeve is fixedly connected to one side, far away from the mounting cylinder, of the two connecting rods, and a piston rod which is positioned in the same central axis with the mounting cylinder is connected in a sliding and penetrating manner in the limit sleeve. The annular limiting block can be held by hand and rotated, so that the annular limiting block can move towards the direction of the piston block through the cooperation of threads, then the piston rod is pulled by hand to pull the piston block out of the mounting cylinder, and the piston block is detached from the piston rod, so that the piston block can be quickly disassembled and assembled, and the maintenance efficiency of the piston block is improved.

Description

Piston

Technical Field

The utility model relates to the technical field of diaphragm pump accessories, in particular to a piston.

Background

The piston is used as a key component of a hydraulic end of the diaphragm pump, and the main body structure of the piston is composed of a piston core, a piston gland, a sealing ring group, a piston gland stud, a gasket and the like. In the working process of the diaphragm pump, the piston and the piston rod are locked through a thin and thick nut after being assembled, and the reciprocating motion is realized under the driving force action of a power end crankshaft and a connecting rod.

The piston with the traditional structure mainly comprises members such as a piston, a piston ring, a supporting ring, a piston rod and the like, piston covers are respectively arranged on two sides of the piston, and are assembled with a piston core by piston cover studs, nuts and gaskets, the piston is provided with a piston ring or a colloid sealing ring to prevent fluid leakage, and the piston is provided with a plurality of assembly parts, and the sealing ring on the piston needs to be replaced after long-term friction damage.

Disclosure of Invention

The present utility model is directed to a piston that solves the above-mentioned problems with the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a piston, is open-ended installation section of thick bamboo including one side, and installation section of thick bamboo is kept away from its open-ended one side and has been seted up the columnar order hole, one side fixedly connected with two symmetrical connecting rods of installation section of thick bamboo, one side common fixedly connected with spacing sleeve of installation section of thick bamboo is kept away from to two connecting rods, the interior slip alternate connection of spacing sleeve has the piston rod that is located same axis with the installation section of thick bamboo, and one side of piston rod extends to in the installation section of thick bamboo and can dismantle fixedly connected with peg graft the piston block in the installation section of thick bamboo, and the annular stopper that can carry out the back-and-forth movement has been cup jointed through the screw thread on the piston rod.

Preferably, the circumferential surface of the piston block is provided with an annular groove, and a silica gel ring which is abutted against the inner wall of the mounting cylinder is sleeved in the annular groove, and the piston block can replace the silica gel ring after being detached from one side of the piston rod.

Preferably, one side fixedly connected with connecting sleeve of piston piece, one side of piston rod is pegged graft in the connecting sleeve, and the screw thread groove has been seted up to one side of piston rod, alternates on the connecting sleeve and is connected with one side and peg graft at screw thread groove internal connection bolt through the screw thread, after unscrewing connecting bolt from the screw thread inslot, can take out piston piece from one side of piston rod to reach the effect of dismantling.

Preferably, the circumferential surface of the piston rod is tapped with a section of internal thread, and the inner wall of the annular limiting block is tapped with an external thread corresponding to the internal thread, so that the annular limiting block can form a threaded fit connection on the piston rod.

Preferably, the distance between the annular limiting block and the limiting sleeve is not smaller than the distance formed between the piston block and the opening at one side of the mounting cylinder, so that the piston block cannot be separated from the mounting cylinder when moving in the mounting cylinder.

Preferably, the periphery side of annular stopper has seted up anti-skidding line.

Compared with the prior art, the utility model has the beneficial effects that:

the annular limiting block can be held by hand and rotated, so that the annular limiting block can move towards the direction of the piston block through the cooperation of threads, then the piston rod is pulled by hand to pull the piston block out of the mounting cylinder, and the piston block is detached from the piston rod, so that the piston block can be quickly disassembled and assembled, and the maintenance efficiency of the piston block is improved.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic plan view of the present utility model;

FIG. 3 is a schematic view of the cross-sectional structure of FIG. 2 taken along the line A-A in accordance with the present utility model;

FIG. 4 is a schematic view of the piston block of the present utility model in a removed condition;

in the figure: 1. a mounting cylinder; 2. a cylindrical hole; 3. a connecting rod; 4. a limit sleeve; 5. a piston rod; 6. a piston block; 61. a silica gel ring; 62. a connecting sleeve; 63. a connecting bolt; 7. an annular limiting block.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

It will be apparent that numerous specific details are set forth in the following description in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced in other ways than as described herein, and therefore the present utility model is not limited to the specific embodiments of the present disclosure.

Referring to fig. 1-4, the present utility model provides a piston: including one side for open-ended installation section of thick bamboo 1, and installation section of thick bamboo 1 has been seted up to one side of its open-ended, and one side fixedly connected with two symmetrical connecting rods 3 of installation section of thick bamboo 1, one side common fixedly connected with spacing sleeve 4 of installation section of thick bamboo 1 is kept away from to two connecting rods 3, spacing sleeve 4 sliding alternate connection has piston rod 5 that is located same axis with installation section of thick bamboo 1, and one side of piston rod 5 extends to installation section of thick bamboo 1 and can dismantle fixedly connected with piston block 6 of grafting in installation section of thick bamboo 1, and annular stopper 7 that can carry out the fore-and-aft movement have been cup jointed through the screw thread on piston rod 5, through such design, when piston block 6 slides in installation section of thick bamboo 1, piston rod 5 can drive annular stopper 7 and also can conflict to spacing sleeve 4, when needs to dismantle piston block 6 and maintain, can hold annular stopper 7 and rotate by hand, make it can be through the cooperation of screw thread and remove towards piston block 6, then the manual pulling 5 can follow installation section of thick bamboo 1 and pull out piston block 6 on piston rod 6 can dismantle piston block 6, can improve piston rod 6 and repair efficiency promptly.

Specifically, as shown in fig. 4, an annular groove is formed in the circumferential surface of the piston block 6, a silica gel ring 61 abutting against the inner wall of the mounting cylinder 1 is sleeved in the annular groove, the silica gel ring 61 can play a role in preventing fluid leakage, and the piston block 6 can replace the silica gel ring 61 after being detached from one side of the piston rod 5.

The specific connection mode between the piston rod 5 and the piston block 6 is as follows, one side of the piston block 6 is fixedly connected with a connecting sleeve 62, one side of the piston rod 5 is spliced in the connecting sleeve 62, one side of the piston rod 5 is provided with a threaded groove, one side of the connecting sleeve 62 is connected with a connecting bolt 63 spliced in the threaded groove through threads, so that the piston block 6 can form fixed connection on one side of the piston rod 5, and after the connecting bolt 63 is screwed out of the threaded groove, the piston block 6 can be taken out from one side of the piston rod 5, so that the disassembling effect is achieved.

It should be noted that, the circumferential surface of the piston rod 5 is tapped with a section of internal thread, and the inner wall of the annular stopper 7 is tapped with an external thread corresponding to the internal thread, so that the annular stopper 7 can form a threaded fit connection on the piston rod 5, and the annular stopper 7 can move back and forth along the length direction of the piston rod 5.

Meanwhile, the distance between the annular limiting block 7 and the limiting sleeve 4 is not smaller than the distance formed between the piston block 6 and the opening at one side of the mounting cylinder 1, so that the piston block 6 cannot be separated from the mounting cylinder 1 when moving in the mounting cylinder 1, and the annular limiting block 7 can be rotated to move towards the direction of the piston block 6 when the piston block 6 needs to be dismounted, and therefore the distance between the annular limiting block 7 and the limiting sleeve 4 can be larger than the distance formed between the piston block 6 and the opening at one side of the mounting cylinder 1, and the piston block 6 can be moved out of the mounting cylinder 1.

Furthermore, the outer circumferential side of the annular limiting block 7 is provided with anti-slip lines to prevent the phenomenon of hand slip when the annular limiting block 7 is held to rotate.

Claims (6)

1. A piston, characterized in that: including one side for open-ended installation section of thick bamboo (1), and installation section of thick bamboo (1) has been kept away from its open-ended one side and has been seted up column hole (2), one side fixedly connected with two symmetrical connecting rods (3) of installation section of thick bamboo (1), one side common fixedly connected with spacing sleeve (4) of installation section of thick bamboo (1) is kept away from to two connecting rods (3), it is connected with piston rod (5) that are located same axis with installation section of thick bamboo (1) to alternate in spacing sleeve (4), and one side of piston rod (5) extends to installation section of thick bamboo (1) in and can dismantle fixedly connected with piston block (6) of pegging graft in installation section of thick bamboo (1), and annular stopper (7) that can carry out back-and-forth movement have been cup jointed through the screw thread on piston rod (5).

2. A piston as claimed in claim 1, wherein: an annular groove is formed in the circumferential surface of the piston block (6), and a silica gel ring (61) which is abutted against the inner wall of the mounting cylinder (1) is sleeved in the annular groove.

3. A piston as claimed in claim 1, wherein: one side of the piston block (6) is fixedly connected with a connecting sleeve (62), one side of the piston rod (5) is inserted into the connecting sleeve (62), a thread groove is formed in one side of the piston rod (5), and one side of the connecting sleeve (62) is inserted and connected with an inner connecting bolt (63) inserted in the thread groove through threads.

4. A piston as claimed in claim 1, wherein: the circumferential surface of the piston rod (5) is provided with a section of internal thread, and the inner wall of the annular limiting block (7) is provided with external threads corresponding to the internal thread.

5. A piston as claimed in claim 1, wherein: the interval between the annular limiting block (7) and the limiting sleeve (4) is not smaller than the interval formed between the piston block (6) and the opening at one side of the mounting cylinder (1).

6. A piston as claimed in claim 1, wherein: the outer periphery side of the annular limiting block (7) is provided with anti-slip lines.