Diaphragm compressor oil compensation device

Abstract

The utility model discloses an oil liquid compensation device of a diaphragm compressor, which relates to the technical field of diaphragm compressors and comprises a compensation oil pump mounting rack mounted on a crankcase, a transmission shaft penetrating through the compensation oil pump mounting rack to be in transmission connection with a crankshaft, and two groups of oil compensation pump components arranged on the compensation oil pump mounting rack, the transmission shaft is provided with a first driving part and a second driving part which are respectively used for enabling the two groups of oil supplementing pump assemblies to carry out oil feeding and oil discharging; through a set of power input, the two driving parts are adopted to output power on the two sides, the two oil supplementing pump components are driven to compensate the oil quantity of the two cylinder bodies of the diaphragm compressor at the same time, the device is compact in structure and convenient to install, oil quantity compensation of the two cylinder bodies can be achieved at the same time, and the oil supplementing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of diaphragm compressors, in particular to an oil compensation device for a diaphragm compressor. Background Art

[0002] The compensating oil pump is an important component in the oil replenishing system of the diaphragm compressor, and is mainly used to replenish the oil in the oil cylinder of the diaphragm compressor. During the normal operation of the diaphragm compressor, the amount of lubricating oil in the oil cylinder of the diaphragm compressor gradually decreases due to the consumption and loss of lubricating oil. At this time, it is necessary to replenish the lubricating oil in the oil cylinder through the compensating oil pump to ensure the normal operation of the diaphragm compressor. The existing compensating oil pump usually compensates the oil volume of one cylinder body with one compensating oil pump. To compensate the oil volume of two cylinder bodies at the same time, two compensating oil pumps are required, which requires two sets of power input, resulting in a complex equipment structure and inconvenient installation. Summary of the invention

[0003] In view of this, the purpose of the utility model is to provide an oil compensation device for a diaphragm compressor. Driven by a transmission shaft, two eccentric sleeves are rotated to push the plungers on both sides to reciprocate, so that the oil is sucked into the pump body through the main oil inlet pipe, and then injected into the cylinder to be replenished by the pump body, thereby realizing oil compensation of the cylinder body.

[0004] The diaphragm compressor oil compensation device provided by the utility model adopts the following technical solutions:

[0005] A diaphragm compressor oil compensation device includes a compensation oil pump mounting frame installed on a crankcase, a transmission shaft passing through the compensation oil pump mounting frame and connected to the crankshaft, and two groups of oil replenishment pump assemblies arranged on the compensation oil pump mounting frame, wherein the transmission shaft is provided with a first driving member and a second driving member for respectively enabling the two groups of oil replenishment pump assemblies to carry out oil intake and oil discharge.

[0006] Furthermore, the oil replenishment pump assembly includes an oil inlet valve component, an oil discharge valve component, a plunger sleeve, a plunger slidably arranged in the plunger sleeve, and a pump body, the oil inlet valve component and the oil discharge valve component are installed on the pump body, the first driving member and the second driving member respectively correspond to the plungers of the two oil replenishment pump assemblies one by one and can drive the plungers to reciprocate in the plunger sleeve so that the oil inlet valve component inlets oil and the oil discharge valve component discharges oil.

[0007] Furthermore, the first driving member and the second driving member are both eccentric sleeves, and the side walls of the first driving member and the second driving member respectively abut against the ends of the two plungers.

[0008] Furthermore, the two groups of the oil replenishment pump assemblies are arranged on both sides of the transmission shaft and are staggered in height, and the first driving member and the second driving member are assembled on the transmission shaft in a 180° staggered manner.

[0009] Furthermore, a return spring is arranged in the plunger sleeve, and two ends of the return spring are respectively connected to the plunger sleeve and the plunger.

[0010] Furthermore, the first driving member and the second driving member are both sleeved with driving bearings, and the outer rings of the driving bearings abut against the ends of the plungers.

[0011] Furthermore, a pressure plate for axially limiting the first driving member and the second driving member is provided at the top end of the transmission shaft.

[0012] In summary, the utility model includes at least one of the following beneficial effects: through a set of power input, two driving parts are used to output the power on both sides, and two oil replenishment pump components are driven to compensate the oil volume of the two cylinders of the diaphragm compressor at the same time. The device has a compact structure and is easy to install. It can realize the oil volume compensation of the two cylinders at the same time, thereby improving the oil replenishment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0014] Figure 2 It is a structural schematic diagram of the oil replenishment pump assembly according to an embodiment of the utility model.

[0015] Description of reference numerals:

[0016] 1. Compensating oil pump mounting bracket; 11. Support ear; 2. Transmission shaft; 21. First driving member; 22. Second driving member; 23. Driving bearing; 24. Pressure plate; 3. Oil replenishment pump assembly; 31. Oil valve component; 32. Oil discharge valve component; 33. Plunger sleeve; 34. Plunger; 35. Pump body; 36. Return spring. DETAILED DESCRIPTION

[0017] The following is an explanation of the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0018] The following is combined with Figure 1-2 The utility model is described in further detail.

[0019] The utility model embodiment discloses a diaphragm compressor oil compensation device. Figure 1-2The oil compensation device of the diaphragm compressor includes a compensation oil pump mounting frame 1 installed on the crankcase, a transmission shaft 2 passing through the compensation oil pump mounting frame 1 and connected to the crankshaft transmission, and two groups of oil replenishment pump assemblies 3 arranged on the compensation oil pump mounting frame 1. The transmission shaft 2 is provided with a first driving member 21 and a second driving member 22 for respectively enabling the two groups of oil replenishment pump assemblies 3 to inlet and outlet oil. Through a set of power input, the power is divided into two sides for output through the first driving member 21 and the second driving member 22, and the two oil replenishment pump components 3 are driven to compensate the oil volume of the two cylinders of the diaphragm compressor at the same time. The device has a compact structure and is easy to install. It can realize the oil volume compensation of the two cylinders at the same time, thereby improving the oil replenishment efficiency.

[0020] In this embodiment, the oil replenishment pump assembly 3 includes an oil inlet valve component 31, an oil discharge valve component 32, a plunger sleeve 33, a plunger 34 slidably arranged in the plunger sleeve 33, and a pump body 35. The oil inlet valve component 31 and the oil discharge valve component 32 are installed on the pump body 35 by means of threads. The first driving member 21 and the second driving member 22 correspond to the plungers 34 of the two oil replenishment pump assemblies 3 respectively and can drive the plungers 34 to reciprocate in the plunger sleeve 33 so that the oil inlet valve component 31 inlets oil and the oil discharge valve component 32 discharges oil. The oil inlet valve component 31 is connected to the main oil inlet valve assemblies 31 and the main oil discharge valve assemblies 32. The pipeline is connected, and the oil discharge valve component 32 is connected to the oil cylinder of the diaphragm compressor. When the driving plunger 34 moves toward the cavity in the pump body 35, the air in the cavity is squeezed and discharged from the cavity through the oil discharge valve component 32. At this time, the cavity is in a negative pressure state. At this time, the lubricating oil is sucked into the cavity from the main oil inlet pipeline through the oil inlet valve component 31. The plunger 34 moves toward the transmission shaft 2 at this time. When the plunger 34 moves toward the cavity again, the oil in the cavity is squeezed, discharged through the oil discharge valve component 32, and flows into the cylinder through the pipeline, thereby realizing oil compensation of the cylinder body.

[0021] In this embodiment, the first driving member 21 and the second driving member 22 are both eccentric sleeves with an eccentric distance of 4 mm. The side walls of the first driving member 21 and the second driving member 22 respectively abut against the ends of the two plungers 34. When the transmission shaft 2 rotates, the eccentric sleeve abuts against the end of the plunger 34. During the rotation, the eccentric sleeve pushes the plunger 34 to move inward, discharges the oil in the cavity from the oil drain valve component 32, and enables the plunger 34 to reciprocate in the plunger sleeve 33.

[0022] In this embodiment, the two groups of the oil replenishment pump assemblies 3 are arranged on both sides of the transmission shaft 2 and are staggered in height. The first driving member 21 and the second driving member 22 are assembled on the transmission shaft 2 in a 180° staggered direction to ensure the balance of the counterweight and smooth rotation during the rotation process, and respectively push the plungers 34 on both sides of the transmission shaft 2 to reciprocate.

[0023] In this embodiment, the two sides of the compensation oil pump mounting frame 1 are provided with support ears 11 of different heights for mounting the beam replenishment oil pump assembly 3. The support ears 11 of different heights can mount two groups of replenishment oil pump assemblies 3 at different heights, and the height difference between the two support ears 11 is 32 mm.

[0024] In this embodiment, a return spring 36 is provided in the plunger sleeve 33, and the two ends of the return spring 36 are respectively connected to the plunger sleeve 33 and the plunger 34. When the wide side of the eccentric sleeve rotates toward the plunger 34, the eccentric sleeve will move the plunger 34 toward the cavity in the pump body 35. During the movement, the return spring 36 is squeezed into a compressed state to discharge the oil. When the narrow side of the eccentric sleeve rotates toward the plunger 34, the plunger 34 moves toward the rotating shaft 2 under the action of the return spring 36, so that the cavity is in a negative pressure and the oil can enter the cavity.

[0025] In this embodiment, the first driving member 21 and the second driving member 22 are both provided with a driving bearing 23, and the outer ring of the driving bearing 23 abuts against the end of the plunger 34. The eccentric sleeve rotates with the transmission shaft 2, and the driving bearing 23 also rotates. The outer ring of the driving bearing 23 pushes the plunger 34 to rotate, which pushes the plunger 34 to move more smoothly, and can also reduce the friction between the eccentric sleeve and the plunger 34, and the operation is smoother.

[0026] In this embodiment, a pressure plate 24 for axially limiting the first driving member 21 and the second driving member 22 is provided at the top end of the transmission shaft 2. The pressure plate 24 can fix the two eccentric sleeves on the transmission shaft 2 to prevent the two eccentric sleeves from axial movement.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A diaphragm compressor oil compensation device, characterized in that: The invention comprises a compensating oil pump mounting frame (1) mounted on a crankcase, a transmission shaft (2) passing through the compensating oil pump mounting frame (1) and connected to the crankshaft for transmission, and two groups of oil replenishment pump assemblies (3) arranged on the compensating oil pump mounting frame (1), wherein the transmission shaft (2) is provided with a first driving member (21) and a second driving member (22) for respectively enabling the two groups of oil replenishment pump assemblies (3) to carry out oil inlet and oil outlet.

2. The diaphragm compressor oil compensation device according to claim 1, characterized in that: The oil replenishment pump assembly (3) comprises an oil inlet valve component (31), an oil discharge valve component (32), a plunger sleeve (33), a plunger (34) slidably arranged in the plunger sleeve (33), and a pump body (35); the oil inlet valve component (31) and the oil discharge valve component (32) are mounted on the pump body (35); the first driving member (21) and the second driving member (22) respectively correspond to the plungers (34) of the two oil replenishment pump assemblies (3) one by one and can drive the plungers (34) to reciprocate in the plunger sleeve (33) so that the oil inlet valve component (31) inlets oil and the oil discharge valve component (32) discharges oil.

3. The diaphragm compressor oil compensation device according to claim 2, characterized in that: The first driving member (21) and the second driving member (22) are both eccentric sleeves, and the side walls of the first driving member (21) and the second driving member (22) respectively abut against the ends of two plungers (34).

4. The diaphragm compressor oil compensation device according to claim 3, characterized in that: The two groups of the oil replenishment pump assemblies (3) are arranged on both sides of the transmission shaft (2) and are staggered in height. The first driving member (21) and the second driving member (22) are assembled on the transmission shaft (2) in a 180° staggered manner.

5. The diaphragm compressor oil compensation device according to claim 3, characterized in that: A return spring (36) is arranged in the plunger sleeve (33), and two ends of the return spring (36) are respectively connected to the plunger sleeve (33) and the plunger (34).

6. The diaphragm compressor oil compensation device according to claim 3, characterized in that: The first driving member (21) and the second driving member (22) are both sleeved with a driving bearing (23), and the outer ring of the driving bearing (23) abuts against the end of the plunger (34).

7. The diaphragm compressor oil compensation device according to claim 1, characterized in that: A pressing plate (24) for axially limiting the first driving member (21) and the second driving member (22) is provided at the top end of the transmission shaft (2).

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