CN219754785U - Slide way hole protection device for reciprocating pump crankcase - Google Patents

Abstract

The utility model discloses a protection device for a slide way hole of a reciprocating pump crankcase, which comprises a crankcase, an oil seal framework, a cylinder sleeve and a connecting rod sliding block, wherein the oil seal framework is arranged on the crankcase; the cylinder sleeve is arranged inside the crankcase, the connecting rod sliding block is arranged inside the cylinder sleeve, the side surfaces of the crankcase, the cylinder sleeve and the connecting rod sliding block are connected through an oil seal framework, the oil seal framework is designed to be of a three-layer boss structure, and connecting rod sliding block holes are formed in the middle of the oil seal framework and correspond to the positions of the connecting rod sliding block. According to the utility model, a set of cylinder sleeve devices matched with the sliding block materials is configured in the reciprocating process of the sliding block of the reciprocating pump, so that the service life of a power end of the reciprocating pump is prolonged, the damage of a box body caused by friction of a sliding block sliding way is solved, and the technical effect of protecting a sliding way hole of a crank case of the reciprocating pump is realized; meanwhile, the utility model ensures the technical effect that the cylinder sleeve is not extruded and fallen and deformed by the sliding block in a mode of fixing the side face of the oil seal framework, thereby ensuring the stable operation of the cylinder sleeve.

Description

Slide way hole protection device for reciprocating pump crankcase

Technical Field

The utility model belongs to the field of engineering elements, and particularly relates to a protection device for a slide way hole of a reciprocating pump crankcase.

Background

In the traditional power mechanism, the crankshaft drives the sliding block to output power forward through 500r/min reciprocating transmission, in the output process, the sliding block directly acts on the box body to perform reciprocating motion, wherein friction mainly depends on an oil film of lubricating oil for protection, but in the long-time reciprocating process, friction between the sliding block and the oil film can directly lead to the box body sliding block Kong Sunshang of the power transmission structure. The power transmission reciprocating mechanism must be replaced at this time, and the cost of the box is quite expensive, wherein the replacement of the box also needs to disassemble and assemble the power transmission reciprocating mechanism, and the manual workload is quite large. It is therefore important to design a slide device that reduces friction.

Chinese patent CN206111365U discloses a cross-type screw cylinder liner; the straight-through double-opening cylinder sleeve comprises a straight-through double-opening cylinder sleeve body, wherein a first flange and a second flange are arranged at one end of the cylinder sleeve body, a groove is formed between the first flange and the second flange, and a plurality of reinforcing ribs are arranged at the other end of the cylinder sleeve body; the cylinder sleeve comprises a cylinder sleeve body, and is characterized in that the cylinder sleeve body is provided with at least two oil holes which are uniformly distributed along the circumferential direction of the cylinder sleeve body, the inner wall of the cylinder sleeve body is provided with a plurality of inclined grooves, and the oil holes are connected with ports of the inclined grooves; the other end of cylinder liner body has a plurality of strengthening ribs, and the structural design of strengthening rib has improved the intensity of cylinder liner, in the use, can add the oil through the oil filler point in to the chute, and oil enters into inside the cylinder liner body through the chute, improves the lubrication degree, reduces the grinding degree, reduces the harm to the cylinder liner, increase of service life, but its in use, because the design of chute can bring unnecessary friction again.

Chinese patent CN106089690a discloses a portable mud pump cylinder liner, including first cylinder liner and second cylinder liner, first cylinder liner upper end be equipped with first chimb, be equipped with a plurality of first screw hole on the first chimb, second cylinder liner upper end be equipped with the second chimb, be equipped with a plurality of second screw hole on the second chimb, first screw hole with second screw hole mutually match. The first cylinder sleeve and the second cylinder sleeve are connected through bolts, and a plurality of grooves are uniformly distributed on the inner circular surface of the first cylinder sleeve from the upper end to the lower end.

Although the method provides the design of the cylinder sleeve, the design for reducing friction is rarely carried out in the slideway hole of the crank case of the reciprocating pump, the aperture of the slideway hole of the crank case of the reciprocating pump is small, and the sliding block is easy to fall off due to pushing, so that how to design a protection device for the slideway hole of the crank case of the reciprocating pump is particularly important.

Disclosure of Invention

In order to solve the problems, the slide way device capable of reducing friction is designed, meanwhile, the slide way device is ensured not to fall off and deform due to extrusion of the sliding block, and further the technical effect of protecting slide way holes of a crank case of a reciprocating pump is achieved.

In order to achieve the effects, the utility model designs a protection device for a slide way hole of a crank case of a reciprocating pump.

A slide way hole protecting device for a reciprocating pump crankcase comprises a crankcase, an oil seal framework, a cylinder sleeve and a connecting rod sliding block;

the cylinder sleeve is arranged in the crankcase;

the connecting rod sliding block is arranged in the cylinder sleeve;

the side surfaces of the crank case, the cylinder sleeve and the connecting rod sliding block are connected through an oil seal framework.

Preferably, the cylinder sleeve is also provided with a lubricating oil hole.

Preferably, the outer diameter of the cylinder sleeve is the same as the inner diameter of the crankcase, and the outer diameter of the connecting rod slide block is the same as the inner diameter of the cylinder sleeve.

Preferably, the diameters of the cylinder sleeve and the crankcase are gradually increased.

Preferably, the oil seal framework is of a three-layer boss structure, and a connecting rod sliding block hole is formed in the middle of the oil seal framework and corresponds to the position of the connecting rod sliding block.

Preferably, the oil seal framework and the connecting rod sliding block are in nested connection in an oil seal mode.

Preferably, the diameter of the hole of the connecting rod sliding block in the oil seal framework is the same as that of the connecting rod sliding block.

Preferably, the oil seal framework is connected with the crankcase through hexagon socket head cap screws.

Preferably, a first sealing element is further arranged between the cylinder sleeve and the crankcase, and a second sealing element is further arranged between the cylinder sleeve and the oil seal framework.

Preferably, the cylinder sleeve is made of CrMoCu30 material or material with the same performance.

The utility model has the following advantages and effects:

1. according to the utility model, a set of cylinder sleeve devices matched with the sliding block materials is configured in the reciprocating process of the sliding block of the reciprocating pump, so that the service life of the power end of the reciprocating pump is prolonged, the problem that the box body is damaged due to friction of the sliding rail holes at the sliding block part is solved, and the technical effect of protecting the sliding rail holes of the crank case of the reciprocating pump is realized in the reciprocating process.

2. According to the utility model, the oil seal framework is designed into a three-layer boss structure, each layer is connected with the corresponding connecting sliding block, the cylinder sleeve and the crankcase, so that the internal stability of the connecting sliding block, the cylinder sleeve and the crankcase is ensured, and the technical effect that the cylinder sleeve is not extruded and separated and deformed due to the sliding block is ensured by the side fixing mode of the oil seal framework, so that the stable operation of the cylinder sleeve is ensured.

3. According to the utility model, through designing the cylinder sleeve, the use cost of replacing the box body is reduced, and under the condition of abrasion of the crankcase, only the protection device is needed to be replaced, so that the cost is low, the efficiency is high, and the normal operation of the reciprocating pump equipment in the coal mine is further ensured.

4. According to the utility model, the technical effect that the device is convenient for supplementing lubricating oil is realized by designing the lubricating oil hole on the cylinder sleeve, an oil film is better formed in the reciprocating process, so that a crankcase is protected, and meanwhile, the cylinder sleeve is prepared by adopting the CrMoCu30 material, so that the stability of the cylinder sleeve is further increased.

5. According to the utility model, the outer circle of the box body hole is gradually enlarged, the outer surface is provided with the step hole, the design is convenient, the sealing is convenient, the outer circle of the cylinder sleeve is small to large in size, the cylinder sleeve is convenient to insert into the box body, and the radial direction of the cylinder sleeve is fixed; the rear end is connected with the oil seal, so that the axial direction of the cylinder sleeve is fixed.

The foregoing description is only an overview of the present utility model, and is intended to provide a better understanding of the technical means of the present utility model, so that the present utility model may be practiced according to the teachings of the present specification, and so that the above-mentioned and other objects, features and advantages of the present utility model may be better understood, and the following detailed description of the preferred embodiments of the present utility model will be presented in conjunction with the accompanying drawings.

The above and other objects, advantages and features of the present utility model will become more apparent to those skilled in the art from the following detailed description of the specific embodiments of the present utility model when taken in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.

FIG. 1 is a diagram of the overall placement of a crankcase slideway aperture protector for a reciprocating pump in accordance with the present utility model;

FIG. 2 is a design of a cylinder liner for a reciprocating pump crankcase slide hole protection device according to the present utility model;

FIG. 3 is a rear view of an oil seal skeleton for a reciprocating pump crankcase slideway aperture protection device provided by the utility model;

FIG. 4 is a side view of an oil seal skeleton for a reciprocating pump crankcase slideway aperture protection device provided by the utility model;

reference numerals: 1. a crankcase; 2. cylinder sleeve; 3. a connecting rod slide block; 4. a first seal; 5. a second seal; 6. an oil seal; 7. an oil seal framework; 8. a hexagon socket head cap screw; 9. a lubrication oil hole; 10. and a connecting rod slide block hole.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of 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, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. In the following description, specific details such as specific configurations and components are provided merely to facilitate a thorough understanding of embodiments of the utility model. It will therefore be apparent to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the utility model. In addition, descriptions of well-known functions and constructions are omitted in the embodiments for clarity and conciseness.

It should be appreciated that reference throughout this specification to "one embodiment" or "this embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present utility model. Thus, the appearances of the "one embodiment" or "this embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.

The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: the terms "/and" herein describe another associative object relationship, indicating that there may be two relationships, e.g., a/and B, may indicate that: the character "/" herein generally indicates that the associated object is an "or" relationship.

The term "at least one" is herein merely an association relation describing an associated object, meaning that there may be three kinds of relations, e.g., at least one of a and B may represent: a exists alone, A and B exist together, and B exists alone.

It is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprise," "include," or any other variation thereof, are intended to cover a non-exclusive inclusion.

Example 1

The embodiment mainly introduces a specific design of a slide way hole protection device for a reciprocating pump crankcase.

A slide way hole protecting device for a reciprocating pump crankcase comprises a crankcase 1, an oil seal framework 7, a cylinder sleeve 2 and a connecting rod sliding block 3;

the cylinder sleeve 2 is arranged inside the crankcase 1;

the connecting rod sliding block 3 is arranged inside the cylinder sleeve 2;

the side surfaces of the crank case 1, the cylinder sleeve 2 and the connecting rod sliding block 3 are connected through an oil seal framework 7. Referring to fig. 1 for specific structure, fig. 1 is a schematic diagram showing the overall placement of a protection device for a slide way hole of a crank case of a reciprocating pump according to the present utility model.

Further, a lubrication oil hole 9 is further formed in the cylinder sleeve 2. Referring to fig. 2 for specific structure, fig. 2 is a design diagram of a cylinder liner for a slide way hole protection device of a reciprocating pump crankcase according to the utility model.

Further, the outer diameter of the cylinder sleeve 2 is the same as the inner diameter of the crankcase 1, and the outer diameter of the connecting rod sliding block 3 is the same as the inner diameter of the cylinder sleeve 2.

Further, the diameters of the cylinder sleeve 2 and the crankcase 1 are gradually increased.

Furthermore, the oil seal framework 7 is of a three-layer boss structure, and a hexagonal cylindrical head screw 8 in the bottom layer of the oil seal framework is connected with the crankcase 1; the middle layer of the oil seal framework is connected with the cylinder sleeve, and a second sealing piece 5 is arranged at the connecting position; the top layer of the oil seal framework is embedded into a gap between the front end of the connecting sliding block and the cylinder sleeve and is connected with the connecting sliding block through a sealing piece.

And a connecting rod slide block hole 10 is arranged in the middle of the oil seal framework 7 and corresponds to the position of the connecting rod slide block 3. Referring to fig. 3 and 4, fig. 3 is a rear view of an oil seal framework for a protection device for a slide way hole of a crank case of a reciprocating pump according to the present utility model; fig. 4 is a side view of an oil seal skeleton for a reciprocating pump crankcase slideway hole protection device.

Furthermore, the oil seal framework 7 is connected with the connecting rod sliding block 3 in a nested manner through the oil seal 6.

Further, the diameter of the connecting rod sliding block hole 10 in the oil seal framework 7 is the same as the diameter of the connecting rod sliding block 3.

Further, a first sealing piece 4 is further arranged between the cylinder sleeve 2 and the crankcase 1, and a second sealing piece 5 is further arranged between the cylinder sleeve 2 and the oil seal framework 7.

Further, the cylinder sleeve 2 is made of CrMoCu30 material.

According to the utility model, through designing the cylinder sleeve, the use cost of replacing the box body is reduced, and under the condition of abrasion of the crankcase, only the protection device is needed to be replaced, so that the cost is low, the efficiency is high, and the normal operation of the reciprocating pump equipment in the coal mine is further ensured.

According to the utility model, the oil seal framework is designed into a three-layer boss structure, each layer is connected with the corresponding connecting sliding block, the cylinder sleeve and the crankcase, so that the internal stability of the connecting sliding block, the cylinder sleeve and the crankcase is ensured, and the technical effect that the cylinder sleeve is not extruded and separated and deformed due to the sliding block is ensured by the side fixing mode of the oil seal framework, so that the stable operation of the cylinder sleeve is ensured.

According to the utility model, the technical effect that the device is convenient for supplementing lubricating oil is realized by designing the lubricating oil hole on the cylinder sleeve, an oil film is better formed in the reciprocating process, so that a crankcase is protected, and meanwhile, the cylinder sleeve is prepared by adopting the CrMoCu30 material, so that the stability of the cylinder sleeve is further increased.

According to the utility model, the outer circle of the box body hole is gradually enlarged, the outer surface is provided with the step hole, the design is convenient, the sealing is convenient, the outer circle of the cylinder sleeve is small to large in size, the cylinder sleeve is convenient to insert into the box body, and the radial direction of the cylinder sleeve is fixed; the rear end is connected with the oil seal, so that the axial direction of the cylinder sleeve is fixed.

Example 2

Based on the above embodiment 1, this embodiment mainly describes the verification of the comparison effect of the present utility model with the existing crankcase slideway hole protection device.

The prior art is like Chinese patent CN106089690A, which aims to solve the problems that the replacement of a cylinder sleeve is complicated and the friction between a piston and the cylinder sleeve is difficult to reduce, and provides a portable mud pump cylinder sleeve with a lubricating system to solve the problems; the concrete design includes first cylinder liner and second cylinder liner, first cylinder liner upper end be equipped with first chimb, be equipped with a plurality of first screw hole on the first chimb, second cylinder liner upper end be equipped with the second chimb, be equipped with a plurality of second screw hole on the second chimb, first screw hole with the second screw hole match each other, first cylinder liner and second cylinder liner pass through bolted connection, its characterized in that: the inner circular surface of the first cylinder sleeve is uniformly provided with a plurality of grooves from the upper end to the lower end; further, the cross section of the groove is triangular, and the width length of the groove with the triangular cross section is far smaller than the axial length of the piston; further, a first through hole is formed in the side face of the first cylinder sleeve, a second through hole is formed in the side face of the second cylinder sleeve, and the first through hole and the second through hole are communicated with each other; further, the aperture of the first through hole is far smaller than the axial length of the piston, but obviously the first through hole has the great disadvantage that a single cylinder sleeve adopts a mode of combining multiple components and is not suitable for a small environment such as a slide way hole of a reciprocating pump crankcase, meanwhile, the slide way hole is internally provided with the cylinder sleeve nested on the sliding block, but a fixing device cannot be designed, so that the sliding block is extruded to cause the damage of the cylinder sleeve in the advancing and pushing process of the sliding block, and further an adding device cannot protect the whole state, so that serious resource waste is formed.

In the reciprocating process of the reciprocating pump sliding block, a set of cylinder sleeve device matched with the sliding block material is arranged, so that the service life of the power end of the reciprocating pump is prolonged, the problem that the box body is damaged due to friction of the sliding way of the power part is solved, and the technical effect of protecting the sliding way hole of the crank case of the reciprocating pump is realized in the reciprocating process. Meanwhile, the utility model ensures the technical effect that the cylinder sleeve is not extruded and fallen and deformed by the sliding block in a mode of fixing the side face of the oil seal framework, thereby ensuring the stable operation of the cylinder sleeve.

The above description is only of the preferred embodiments of the present utility model and it is not intended to limit the scope of the present utility model, but various modifications and variations can be made by those skilled in the art. Variations, modifications, substitutions, integration and parameter changes may be made to these embodiments by conventional means or may be made to achieve the same functionality within the spirit and principles of the present utility model without departing from such principles and spirit of the utility model.

Claims (9)

1. The slide way hole protection device for the reciprocating pump crankcase is characterized by comprising a crankcase (1), an oil seal framework (7), a cylinder sleeve (2) and a connecting rod sliding block (3);

the cylinder sleeve (2) is arranged in the crankcase (1);

the connecting rod sliding block (3) is arranged in the cylinder sleeve (2);

the side surfaces of the crankcase (1), the cylinder sleeve (2) and the connecting rod sliding block (3) are connected through an oil seal framework (7);

the oil seal framework (7) is of a three-layer boss structure, and a connecting rod sliding block hole (10) is formed in the middle of the oil seal framework (7) and corresponds to the position of the connecting rod sliding block (3).

2. The protection device for the slideway holes of the crankcase of the reciprocating pump according to claim 1, wherein the cylinder sleeve (2) is also provided with a lubricating oil hole (9).

3. The protection device for the slideway holes of the crankcase of the reciprocating pump according to claim 1, wherein the external diameter of the cylinder sleeve (2) is the same as the internal diameter of the crankcase (1), and the external diameter of the connecting rod sliding block (3) is the same as the internal diameter of the cylinder sleeve (2).

4. A crankcase slide hole protection device for a reciprocating pump according to any of claims 1 or 3, characterized in that the diameters of the cylinder liner (2) and the crankcase (1) are gradually increased.

5. The protection device for the slide way hole of the crank case of the reciprocating pump according to claim 1, wherein the oil seal framework (7) is connected with the connecting rod sliding block (3) in a nested way through an oil seal (6).

6. A protection device for a slide way hole of a crank case of a reciprocating pump according to claim 1, characterized in that the diameter of a connecting rod slide block hole (10) in the oil seal skeleton (7) is the same as the diameter of the connecting rod slide block (3).

7. A slide way hole protecting device for a reciprocating pump crankcase according to any one of claims 1 or 6, characterized in that the oil seal skeleton (7) is connected with the crankcase (1) by means of a hexagon socket head cap screw (8).

8. The protection device for the slide way hole of the crank case of the reciprocating pump according to claim 1, wherein a first sealing element (4) is further arranged between the cylinder sleeve (2) and the crank case (1), and a second sealing element (5) is further arranged between the cylinder sleeve (2) and the oil seal framework (7).

9. A protection device for a crankcase slideway aperture of a reciprocating pump, according to any of claims 1, 3 or 8, characterized in that the cylinder liner (2) is made of CrMoCu30 material.