CN219654872U

CN219654872U - Novel reciprocating type plunger rod

Info

Publication number: CN219654872U
Application number: CN202321015492.2U
Authority: CN
Inventors: 夏勤; 罗尹平
Original assignee: Guangdong Shuoqin New Materials Co ltd
Current assignee: Guangdong Shuoqin New Materials Co ltd
Priority date: 2023-04-28
Filing date: 2023-04-28
Publication date: 2023-09-08
Anticipated expiration: 2033-04-28

Abstract

The utility model relates to the technical field of plungers, in particular to a novel reciprocating plunger rod which comprises a plunger body, a plunger head, a plunger rod body and a guide assembly, wherein the plunger rod body is positioned in the plunger body, a drainage port is formed in one side of the plunger body, one end of the plunger rod body, which is far away from the drainage port, is connected with a driving plate, the driving plate is connected with external driving equipment, and a plurality of guide cylinders are arranged on the outer side wall of the plunger body.

Description

Novel reciprocating type plunger rod

Technical Field

The utility model relates to a plunger rod, in particular to a novel reciprocating plunger rod, and belongs to the technical field of plungers.

Background

The plunger is used for conveying fluid or gas in a pump or a compressor, and the plunger rod is a part in the plunger and mainly used for converting the pressure inside the plunger into the external linear motion, so that the work of the machine is realized, and the plunger rod is a moving part with frequent movement and high movement requirement.

The current plunger rod bears larger pressure and torque when in reciprocating motion in the plunger, once the plunger rod is in a shifting state during reciprocating motion, the axis of the plunger rod and the axis of the plunger rod are not coincident any more, so that the bending phenomenon of the plunger rod can occur, and the working efficiency and the service life of the plunger pump are affected.

Accordingly, there is a need for an improved novel reciprocating plunger rod that addresses the above-described problems.

Disclosure of Invention

The utility model aims to provide a novel reciprocating plunger rod, when the plunger rod body reciprocates in the plunger body, the plunger rod body is limited by a guide assembly, when the plunger rod body moves to the outer side of the plunger body, the plunger rod body is guided and limited by the limit of a buffer rod by a guide cylinder, so that the axis of the plunger rod body always coincides with the axis of the plunger body to perform horizontal movement, the bending phenomenon caused by deflection during the movement of the plunger rod is avoided, and the service life of the plunger rod body is prolonged.

In order to achieve the above purpose, the main technical scheme adopted by the utility model comprises the following steps:

the novel reciprocating type plunger rod comprises a plunger body, a plunger head, a plunger rod body and a guide assembly, wherein the plunger rod body is positioned in the plunger body, a drainage port is formed in one side of the plunger body, one end, away from the drainage port, of the plunger rod body is connected with a driving plate, the driving plate is connected with external driving equipment, a plurality of guide cylinders are arranged on the outer side wall of the plunger body, one side of the driving plate is connected with a plurality of buffer columns which are in sliding connection with the guide cylinders, and buffer springs are connected between the buffer columns and the guide cylinders;

the guide assembly comprises a guide sleeve and a plurality of guide rings, the guide sleeve is fixedly connected to the inner wall of the plunger body, the guide rings are fixedly sleeved on the outer side of the plunger rod body, and guide blocks which are in sliding connection with the inner wall of the guide sleeve are arranged on the outer circumferential wall of the guide rings.

Preferably, a plurality of connecting ribs surrounding the central axis of the plunger rod body are arranged on the circumferential outer wall of the plunger rod body, and a plurality of guide rings are sleeved on the outer sides of the connecting ribs.

Preferably, a plurality of sealing lips are arranged on the inner wall of the guide sleeve, a sealing groove is formed in the sealing lips, and a sealing ring corresponding to the sealing groove is arranged on the guide ring.

Preferably, the plunger head is connected with one end of the plunger rod body far away from the driving plate, and the plunger head is in a truncated cone shape.

Preferably, the distance between the plunger head and the inner wall of the plunger rod body is between 0.01mm and 0.05 mm.

Preferably, the outer walls of the guide ring and the guide block are provided with a wear-resistant layer, and the wear-resistant layer is a silicon carbide layer.

The utility model has at least the following beneficial effects:

1. when the plunger rod body reciprocates in the plunger body, the plunger rod body is limited through the guide assembly, when the plunger rod body moves to the outer side of the plunger rod body, the plunger rod body is guided and limited through the limit of the buffer rod by the guide cylinder, so that the axis of the plunger rod body always coincides with the axis of the plunger body to perform horizontal movement, and the phenomenon of bending caused by deflection when the plunger rod body moves is avoided.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

FIG. 1 is a schematic view of an isometric structure provided by the present utility model;

FIG. 2 is a cross-sectional view provided by the present utility model;

FIG. 3 is an enlarged schematic view of the structure shown in FIG. 2A according to the present utility model;

FIG. 4 is a cross-sectional view of a guide ring provided by the present utility model;

fig. 5 is a perspective view of a plunger rod body provided by the present utility model.

In the figure, 1, a plunger body; 101. a plunger head; 102. a plunger rod body; 103. a drainage port; 104. a driving plate; 105. a guide cylinder; 106. a buffer column; 107. a buffer spring; 2. a guide sleeve; 201. a guide ring; 202. a guide block; 3. a connecting rib; 4. a sealing lip; 401. sealing grooves; 402. a seal ring; 5. and a wear-resistant layer.

Detailed Description

The following detailed description of embodiments of the present utility model will be given with reference to the accompanying drawings and examples, by which the implementation process of how the present utility model can be applied to solve the technical problems and achieve the technical effects can be fully understood and implemented.

As shown in fig. 1-5, the novel reciprocating plunger rod provided in this embodiment includes a plunger body 1, a plunger head 101, a plunger rod body 102 and a guiding component, where the plunger rod body 102 is located inside the plunger body 1, and a drainage port 103 is formed on one side of the plunger body 1, the plunger head 101 is connected with one end of the plunger rod body 102 far away from a driving plate 104, and the plunger head 101 is in a truncated cone shape, the truncated cone-shaped plunger head 101 can better adapt to the shape of the sealing inner wall surface of the drainage port 103, improving the sealing performance, preventing leakage, and one end of the plunger rod body 102 far away from the drainage port 103 is connected with a driving plate 104, where the driving plate 104 is connected with external driving equipment to drive the plunger rod body 102 to perform reciprocating rectilinear motion inside the plunger body 1;

the outer side wall of the plunger body 1 is provided with a plurality of guide cylinders 105, one side of the driving plate 104 is connected with a plurality of buffer columns 106 which are in sliding connection with the guide cylinders 105, buffer springs 107 are connected between the buffer columns 106 and the guide cylinders 105, when the plunger rod body 102 moves to the outer side of the plunger body 1, the plunger rod body 102 at the outer side can be limited, the plunger rod body 102 is prevented from being deviated due to uneven stress caused by the plunger rod body 102 at the outer side, and when the plunger rod body 102 enters the plunger body 1, the buffer columns 106 are driven to compress the buffer springs 107 to play a buffer role, and a buffer spring 107 seat can bear the inertia force of the buffer columns 106 to slow down the movement speed of the buffer columns 106;

the guide assembly comprises a guide sleeve 2 and a plurality of guide rings 201, the guide sleeve 2 is fixedly connected to the inner wall of the plunger body 1, the guide rings 201 are fixedly sleeved on the outer side of the plunger rod body 102, guide blocks 202 which are in sliding connection with the inner wall of the guide sleeve 2 are arranged on the circumferential outer wall of the guide rings 201, when the plunger rod body 102 moves in the plunger body 1, the guide blocks 202 slide back and forth in the guide sleeve 2 to further guide and limit the plunger rod body 102, the number of the guide assemblies is in direct proportion to the length of the plunger rod body 102, and when the length of the plunger rod body 102 is longer, the number of the guide assemblies is more;

further, as shown in fig. 5, a plurality of connecting ribs 3 surrounding the central axis of the plunger rod body 102 are arranged on the circumferential outer wall of the plunger rod body 102, and a plurality of guide rings 201 are sleeved on the outer sides of the connecting ribs 3, wherein the connecting ribs 3 are made of metal materials, and the hardness is HRC50-60, so that the strength and the rigidity of the plunger rod body 102 can be improved, the bending and the torsion of the plunger rod body 102 are prevented, and the stability and the reliability of the plunger rod body in the working process are ensured;

still further, as shown in fig. 3, a plurality of sealing lips 4 are provided on the inner wall of the guide sleeve 2, a sealing groove 401 is provided on the sealing lips 4, a sealing ring 402 corresponding to the sealing groove 401 is provided on the guide ring 201, when the plunger rod body 102 drives the guide ring 201 to move towards the direction of the drainage port 103, the sealing ring 402 will be clamped into the adjacent sealing groove 401 to form a seal in the plunger body 1, thereby avoiding air leakage in the plunger body 1 when the plunger head 101 pushes liquid out of the drainage port 103;

further, as shown in fig. 2, the distance between the plunger head 101 and the inner wall of the plunger rod body 102 is between 0.01mm and 0.05mm, an excessive fit clearance can lead to the decrease of the sealing performance between the plunger head 101 and the plunger head 1, because hydraulic oil can leak out from the clearance, meanwhile, an excessive fit clearance can lead to the unstable movement of the plunger head 101, the working efficiency and the precision of the system are affected, an excessive fit clearance can lead to the increase of friction between the plunger head 101 and the plunger head 1, the energy consumption and the abrasion of the system are increased, and the fit clearance between the plunger head 101 and the inner wall of the plunger rod body 102 is preferably 0.03mm in the scheme, so that the contact surface between the plunger head 101 and the plunger head 1 can be ensured to be lubricated by the lubricating oil, thereby reducing the abrasion and friction, and enabling hydraulic oil to form a certain sealing pressure between the plunger head 101 and the plunger body 1;

further, as shown in fig. 4, the outer walls of the guide ring 201 and the guide block 202 are provided with the wear-resistant layer 5, the wear-resistant layer 5 is a silicon carbide layer, and the silicon carbide material has extremely high hardness and wear resistance, is suitable for high-temperature, high-pressure and high-speed friction environments, increases the wear resistance degree of the guide ring 201 and the guide block 202, and prolongs the service life of the guide assembly.

As shown in fig. 1 to 5, the principle of the novel reciprocating plunger rod provided in this embodiment is as follows: the driving plate 104 is connected with external driving equipment to drive the plunger rod body 102 to reciprocate in the plunger, the plunger rod body 102 slides in the guide sleeve 2 through driving the guide ring 201 and the guide block 202 when moving, the moving track of the plunger rod body 102 is limited, the plunger rod body 102 and the axis of the plunger rod body 1 are overlapped to perform horizontal movement, so that the phenomenon that the plunger rod body 102 is offset is avoided, when the plunger rod body 102 drives the guide ring 201 to move towards the direction of the drainage port 103, the sealing ring 402 is clamped into the adjacent sealing groove 401, sealing is formed in the plunger rod body 1, so that when the plunger head 101 pushes liquid out of the drainage port 103, air leakage in the plunger rod body 1 is avoided, the sealing effect in the plunger rod body 1 is improved, when the driving plate 104 drives the plunger rod body 102 to move away from the drainage port 103 and leaks out of the plunger rod body 1, the plunger rod body 102 is further limited through the limit of the guide cylinder 105, and the horizontal reciprocation of the plunger rod body 102 is ensured.

Certain terms are used throughout the description and claims to refer to particular components. Those of skill in the art will appreciate that a hardware manufacturer may refer to the same component by different names. The description and claims do not take the form of an element differentiated by name, but rather by functionality. As used throughout the specification and claims, the word "comprise" is an open-ended term, and thus should be interpreted to mean "include, but not limited to. By "substantially" is meant that within an acceptable error range, a person skilled in the art can solve the technical problem within a certain error range, substantially achieving the technical effect.

It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude that an additional identical element is present in a commodity or system comprising the element.

While the foregoing description illustrates and describes the preferred embodiments of the present utility model, it is to be understood that the utility model is not limited to the forms disclosed herein, but is not to be construed as limited to other embodiments, and is capable of numerous other combinations, modifications and environments and is capable of changes or modifications within the scope of the inventive concept as described herein, either as a result of the foregoing teachings or as a result of the knowledge or technology in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the utility model are intended to be within the scope of the appended claims.

Claims

1. The utility model provides a novel reciprocating type plunger rod, includes plunger body (1), plunger head (101), plunger rod body (102) and direction subassembly, plunger rod body (102) are located the inside of plunger body (1), just drainage mouth (103) have been seted up to one side of plunger body (1), its characterized in that: one end of the plunger rod body (102) far away from the drainage port (103) is connected with a driving plate (104), the driving plate (104) is connected with external driving equipment, a plurality of guide cylinders (105) are arranged on the outer side wall of the plunger body (1), one side of the driving plate (104) is connected with a plurality of buffer columns (106) which are in sliding connection with the guide cylinders (105), and buffer springs (107) are connected between the buffer columns (106) and the guide cylinders (105);

the guide assembly comprises a guide sleeve (2) and a plurality of guide rings (201), wherein the guide sleeve (2) is fixedly connected to the inner wall of the plunger body (1), the guide rings (201) are fixedly sleeved on the outer side of the plunger rod body (102), and guide blocks (202) which are in sliding connection with the inner wall of the guide sleeve (2) are arranged on the circumferential outer wall of the guide rings (201).

2. A novel reciprocating plunger rod according to claim 1, wherein: the outer wall of the circumference of the plunger rod body (102) is provided with a plurality of connecting ribs (3) which are arranged around the central axis of the plunger rod body (102), and a plurality of guide rings (201) are sleeved on the outer sides of the connecting ribs (3).

3. A novel reciprocating plunger rod according to claim 1, wherein: the guide sleeve is characterized in that a plurality of sealing lips (4) are arranged on the inner wall of the guide sleeve (2), a sealing groove (401) is formed in the sealing lips (4), and a sealing ring (402) corresponding to the sealing groove (401) is arranged on the guide ring (201).

4. A novel reciprocating plunger rod according to claim 1, wherein: the plunger head (101) is connected with one end, far away from the driving plate (104), of the plunger rod body (102), and the plunger head (101) is in a round table shape.

5. A novel reciprocating plunger rod according to claim 1, wherein: the distance between the plunger head (101) and the inner wall of the plunger rod body (102) is between 0.01mm and 0.05 mm.

6. A novel reciprocating plunger rod according to claim 1, wherein: and the outer walls of the guide ring (201) and the guide block (202) are provided with a wear-resistant layer (5), and the wear-resistant layer (5) is a silicon carbide layer.