CN214118445U

CN214118445U - Completely opposite-moving type piston compressor structure

Info

Publication number: CN214118445U
Application number: CN202022455216.0U
Authority: CN
Inventors: 赵大帅; 吕金刚; 丁兆国; 杨兰
Original assignee: BENGBU GAOKE ENERGY EQUIPMENT CO LTD
Current assignee: BENGBU GAOKE ENERGY EQUIPMENT CO LTD
Priority date: 2020-10-28
Filing date: 2020-10-28
Publication date: 2021-09-03
Anticipated expiration: 2030-10-28

Abstract

The utility model discloses a complete opposite-moving type piston compressor structure, including bent axle and first piston mechanism and second piston mechanism, the connecting rod of first piston mechanism and second piston mechanism is installed on the different crank throw of bent axle, and the cross head slidable mounting of first piston mechanism is inside the cross head of second piston mechanism, and the piston rod of first piston mechanism runs through piston and the piston rod of second piston mechanism, and in the course of the work, produced reciprocal inertial force of compressor and moment of inertia reach complete balance, are applicable to various piston compressor model. The utility model provides a completely to dynamic formula piston compressor structure will be to another row of dynamic formula compressor and put into self and be listed as, forms two and is listed as coaxial structure, can replace prior art's outer to dynamic formula piston compressor structure, makes the unit operation more steady, and area is little, and spare part is small in quantity, low in production cost, and the discharge capacity is bigger in the model of the same kind.

Description

Completely opposite-moving type piston compressor structure

Technical Field

The utility model relates to a compressor technical field especially relates to a complete opposite action formula piston compressor structure.

Background

The compressor unit operates by driving the crankshaft of the compressor to rotate by the driving equipment (motor, diesel engine, etc.) of the compressor unit, and then the crankshaft drives the components such as connecting rod, crosshead, piston rod, piston, etc. to move. The crankshaft of the compressor unit can be composed of one or more crank throws, the crank throws drive the big end of the connecting rod to rotate, the rotating motion of the connecting rod is converted into the reciprocating motion of the crosshead and the piston component, and the piston component completes the gas compression process in the cylinder, so that the gas pressurization effect is achieved.

In the prior model design, a structure of a double-acting piston compressor is adopted, so that the occupied area is large, the reciprocating inertia moment cannot be balanced, a plurality of machined parts are provided, and the production cost is high. In this process, there are many drawbacks, including in particular: the number of parts is large, and the assembly workload is increased; the whole machine of the opposite-moving type compressor occupies a large area and has high investment cost; the volume of the double-acting compressor is large under the same discharge capacity, and the production and transportation cost is high; the opposite-moving type compressor cannot balance the reciprocating inertia moment, vibration is easy to generate, and the service life of a bearing is shortened.

SUMMERY OF THE UTILITY MODEL

For the technical problem who exists among the solution background art, the utility model provides a complete opposite moving type piston compressor structure.

The utility model provides a complete opposite moving type piston compressor structure, include: the crankshaft comprises a first crank throw, a second crank throw and a third crank throw, and the second crank throw is arranged opposite to the first crank throw and the third crank throw and is positioned between the first crank throw and the third crank throw;

the first piston mechanism comprises a first connecting rod, a first crosshead pin, a first nut, a first piston rod and a first piston; the big end of the first connecting rod is rotatably arranged on a second crank throw of the crankshaft, and the small end of the first connecting rod is rotatably arranged in the first crosshead through a first crosshead pin; the first end of the first piston rod is connected to the end part of the first crosshead through a first nut, and the first piston is coaxially connected to the second end of the first piston rod;

the second piston mechanism comprises a second connecting rod, a second cross head pin, a second nut, a second piston rod and a second piston; the big ends of the two second connecting rods are respectively and rotatably arranged on a first crank throw and a third crank throw of the crankshaft, and the small ends are respectively and rotatably arranged on the outer side of the second cross head through second cross head pins; the first end of the second piston rod is connected to the end part of the second cross head through a second nut, and the second piston is coaxially connected to the second end of the second piston rod;

the first piston mechanism and the second piston mechanism are positioned on the same side of the crankshaft; the first crosshead is coaxially arranged inside the second crosshead, and the first piston rod coaxially penetrates through the second piston rod and the second piston.

Preferably, still include the cylinder, first piston and second piston all cooperate to install and divide into three work air cavity at the cylinder inside and with the cylinder, are equipped with three business turn over gas ports respectively corresponding to three work air cavities on the cylinder.

Preferably, a first packing structure matched with the second piston rod is arranged in the assembling through hole at the end part of the cylinder.

Preferably, a second packing structure cooperating with the first piston rod is provided in the fitting through hole of the second piston.

Preferably, the connector box is further included, and the second letter head is slidably mounted in the connector box.

Preferably, a crankcase is further included, and the crankshaft is rotatably mounted on the crankcase.

Preferably, the engine further comprises a cylinder, a connecting box and a crankcase, wherein the connecting box is connected between the cylinder and the crankcase.

The utility model also provides a piston compressor, including above-mentioned complete butt joint formula piston compressor structure.

The utility model provides a complete opposite-moving type piston compressor structure, including bent axle and first piston mechanism and second piston mechanism, the connecting rod of first piston mechanism and second piston mechanism is installed on the different crank throw of bent axle, and the cross head slidable mounting of first piston mechanism is inside the cross head of second piston mechanism, and the piston rod of first piston mechanism runs through the piston and the piston rod of second piston mechanism, and in the course of the work, produced reciprocal inertia force of compressor and moment of inertia reach complete balance, are applicable to various piston compressor models. The utility model provides a completely to dynamic formula piston compressor structure will be to another row of dynamic formula compressor and put into self and be listed as, forms two and is listed as coaxial structure, can replace prior art's outer to dynamic formula piston compressor structure, makes the unit operation more steady, and area is little, and spare part is small in quantity, low in production cost, and the discharge capacity is bigger in the model of the same kind.

Drawings

Fig. 1 is a schematic structural diagram of a structure of a fully-opposed piston compressor according to the present invention.

Fig. 2 is a schematic structural view of a crankshaft.

Fig. 3 is a sectional view taken along line a-a of fig. 1.

Fig. 4 is a schematic structural diagram of two piston mechanisms in the first limit position according to the embodiment of the present invention.

Fig. 5 is a schematic structural diagram of two piston mechanisms in the second extreme position according to the embodiment of the present invention.

Detailed Description

As shown in fig. 1-5, fig. 1 is a schematic structural view of a structure of a complete-opposition type piston compressor according to the present invention, fig. 2 is a schematic structural view of a crankshaft, and fig. 3 is a sectional view taken along a line a-a in fig. 1.

Referring to fig. 1 to 3, the present invention provides a complete opposite-acting piston compressor structure, including: the device comprises a cylinder 4, a connecting box 5, a crankcase 6, a crankshaft 1, a first piston mechanism and a second piston mechanism; the connecting box 5 is connected between the cylinder 4 and the crankcase 6;

the crankshaft 1 is rotatably mounted in a crankcase 6. The crankshaft 1 comprises a first crank throw 11, a second crank throw 12 and a third crank throw 13, the three crank throws are located on the same plane, the second crank throw 12 is opposite to the first crank throw 11 and the third crank throw 13, the second crank throw 12 is located between the first crank throw 11 and the third crank throw 13, and two crank pins on the first crank throw 11 and the third crank throw 13 are coaxially arranged.

The first piston mechanism includes a first connecting rod 21, a first crosshead 22, a first crosshead pin 23, a first nut 24, a first piston rod 25, and a first piston 26; the big end of the first connecting rod 21 is rotatably arranged on the second crank throw 12 of the crankshaft 1, and the small end is rotatably arranged inside the first crosshead 22 through a first crosshead pin 23; a first piston rod 25 is attached at a first end to the end of the first crosshead 22 by a first nut 24 and a first piston 26 is coaxially attached to a second end of the first piston rod 25.

The second piston mechanism comprises a second connecting rod 31, a second crosshead 32, a second crosshead pin 33, a second nut 34, a second piston rod 35 and a second piston 36; the big end ends of the two second connecting rods 31 are respectively and rotatably arranged on the first crank throw 11 and the third crank throw 13 of the crankshaft 1, and the small end ends are respectively and rotatably arranged outside the second crosshead 32 through a second crosshead pin 33; a first end of a second piston rod 35 is connected to the end of the second crosshead 32 through a second nut 34, and a second piston 36 is coaxially connected to a second end of the second piston rod 35.

The first piston mechanism and the second piston mechanism are positioned on the same side of the crankcase 6, and the first piston 26 and the second piston 36 are both arranged inside the cylinder 4 in a matching way; the second crosshead 32 is slidably mounted in the connecting box 5, the first crosshead 22 is coaxially mounted inside the second crosshead 32, and the first piston rod 25 coaxially penetrates through the second piston rod 35 and the second piston 36; the first crosshead 22 linearly reciprocates in the second crosshead 32, and the first piston rod 25 linearly reciprocates in the second piston rod 35 and the second piston 36.

For better sealing, a first packing structure engaged with the second piston rod 35 is provided on the inner wall of the fitting through-hole of the end portion of the cylinder 4, and a second packing structure engaged with the first piston rod 25 is provided on the inner wall of the fitting through-hole of the second piston 36.

In order to realize the gas compression function of the double pistons, the cylinder 4 is divided into three working air chambers by the first piston 26 and the second piston 36, and three air inlets and three air outlets are respectively arranged on the peripheral wall of the cylinder 4 corresponding to the three working air chambers.

The embodiment of the utility model provides a complete opposite moving type piston compressor structure, refer to fig. 3 to 5, in the course of the work, rotate through bent axle 1, two piston mechanism reciprocating motion to realize gas compression, its concrete process is as follows:

in the initial state, the two piston mechanisms are in the working state shown in fig. 3;

referring to fig. 4, the first piston mechanism moves rightward, the second piston mechanism moves leftward, the working air chambers located at both sides complete an exhaust process, and the working air chamber located in the middle completes an intake process.

Referring to fig. 5, the first piston mechanism moves leftward, the second piston mechanism moves rightward, the working air chambers located in the middle perform an exhaust process, and the working air chambers located at both sides perform an intake process.

The reciprocating motion is realized, thereby realizing the continuous working process.

Based on the utility model discloses the complete butt-moving type piston compressor structure that above-mentioned embodiment provided, the utility model discloses still provide a piston compressor, including above-mentioned complete butt-moving type piston compressor structure in this piston compressor, it has above-mentioned beneficial effect equally.

The above, only be 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 familiar with the technical field of the present invention discloses the technical scope of the present invention is first, according to the technical solution of the present invention and the design of the present invention, equivalent replacement or change should be included in the first protection scope of the present invention.

Claims

1. A fully opposed piston compressor construction comprising: the piston type engine comprises a crankshaft (1), a first piston mechanism and a second piston mechanism, wherein the crankshaft (1) comprises a first crank throw (11), a second crank throw (12) and a third crank throw (13), and the second crank throw (12) is arranged opposite to the first crank throw (11) and the third crank throw (13) and is positioned between the first crank throw and the third crank throw;

the first piston mechanism comprises a first connecting rod (21), a first crosshead (22), a first crosshead pin (23), a first nut (24), a first piston rod (25) and a first piston (26); the big end of the first connecting rod (21) is rotatably arranged on a second crank throw (12) of the crankshaft (1), and the small end is rotatably arranged in a first crosshead (22) through a first crosshead pin (23); a first end of a first piston rod (25) is connected to the end part of the first crosshead (22) through a first nut (24), and a first piston (26) is coaxially connected to a second end of the first piston rod (25);

the second piston mechanism comprises a second connecting rod (31), a second cross head (32), a second cross head pin (33), a second nut (34), a second piston rod (35) and a second piston (36); the big end ends of the two second connecting rods (31) are respectively and rotatably arranged on a first crank throw (11) and a third crank throw (13) of the crankshaft (1), and the small end ends are respectively and rotatably arranged on the outer side of a second cross head (32) through a second cross head pin (33); the first end of a second piston rod (35) is connected to the end of a second crosshead (32) through a second nut (34), and a second piston (36) is coaxially connected to the second end of the second piston rod (35);

the first piston mechanism and the second piston mechanism are positioned on the same side of the crankshaft (1); the first crosshead (22) is coaxially mounted inside the second crosshead (32), and the first piston rod (25) coaxially penetrates through the second piston rod (35) and the second piston (36).

2. A structure of a fully opposed piston compressor according to claim 1, further comprising a cylinder (4), wherein the first piston (26) and the second piston (36) are both installed inside the cylinder (4) in a matching manner and divide the cylinder (4) into three working air chambers, and three air inlets and three air outlets are respectively provided on the cylinder (4) corresponding to the three working air chambers.

3. A fully opposed piston compressor arrangement according to claim 2, characterized in that a first packing seal cooperating with the second piston rod (35) is provided in the assembly through hole at the end of the cylinder (4).

4. A fully opposed piston compressor arrangement according to claim 1, characterized in that a second packing seal arrangement cooperating with the first piston rod (25) is provided in the assembly through hole of the second piston (36).

5. A fully opposed piston compressor arrangement according to claim 1, further comprising a connecting box (5), the second crosshead (32) being slidably mounted in the connecting box (5).

6. A fully opposed piston compressor arrangement according to claim 1, further comprising a crankcase (6), the crankshaft (1) being rotatably mounted on the crankcase (6).

7. A fully opposed piston compressor arrangement according to claim 1, further comprising a cylinder (4), a connecting box (5) and a crankcase (6), the connecting box (5) being connected between the cylinder (4) and the crankcase (6).

8. Piston compressor, characterized in that it comprises a fully opposed piston compressor arrangement according to any one of claims 1 to 7.