Air-cooled double-acting compressor with zero-leakage sealing device

Abstract

An air-cooled double-acting compressor with a zero-leakage sealing device belongs to the technical field of compressor sealing, three machine heads are arranged on a crankcase of the compressor, each machine head comprises an air cylinder part, a filler bin part, a middle body part, a connecting part and a sealing device, a top cover is arranged at the top of each air cylinder part, and a sealing cover is arranged at the bottom of each middle body part. The bottom of the packing bin part is connected with the top of the packing bin part, the bottom of the packing bin part is connected with the top of the middle body part, the bottom of the middle body part is connected with the top of the connecting part, and the connecting part is connected with the crankcase. The sealing device comprises a top cover sealing part, an air valve sealing part, a filler bin sealing part, a middle body sealing part and a connecting part sealing part, and the connecting positions of all the parts are sealed through the sealing device. The compressor is sealed by adopting the large-bevel-angle O-shaped sealing rings at the joints of all the parts and the self-lubricating sealing shaft seals, so that the zero-leakage high sealing performance is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of compressor sealing, and in particular relates to an air-cooled double-acting compressor with a zero-leakage sealing device. Background Art

[0002] The compressor is a general-purpose machine, which is widely used in all walks of life. The sealing device of the compressor is one of the important components of the compressor. The tightness of the sealing device is related to the overall performance, power consumption and safety of the compressor. The domestic compressor sealing device has always used asbestos rubber sheet gaskets for static sealing, and skeleton oil seals for dynamic sealing. This traditional sealing device can no longer meet the current increasing requirements for compressors and needs to be improved. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of the utility model is to design an air-cooled double-acting compressor with a zero-leakage sealing device to solve the problem that the existing sealing device mentioned in the background technology cannot meet the current ever-increasing requirements for compressors.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an air-cooled double-acting compressor with a zero-leakage sealing device, wherein three heads are arranged on the crankcase of the compressor, and the heads include a cylinder part, a stuffing bin part, a middle body part, a connecting part and a sealing device, a top cover is arranged on the top of the cylinder part, and its bottom is connected to the top of the stuffing bin part, the bottom of the stuffing bin part is connected to the top of the middle body part, the bottom of the middle body part is connected to the top of the connecting part, and the connecting part is connected to the crankcase, and the sealing device includes a top cover sealing component, an air valve sealing component, a stuffing bin sealing component, a middle body sealing component and a connecting part sealing component, and the connection between the parts is sealed by the sealing device.

[0005] The cylinder part is connected to the top cover by fastening bolts, and a top cover sealing component is provided at the connection between them; a piston is provided inside the cylinder part and reciprocates in the cylinder, the piston is connected to one end of a piston rod, the other end of the piston rod passes through the stuffing bin part and the middle body part and is connected to a connecting rod in the connecting part, the other end of the connecting rod is connected to the crankshaft of the crankcase, and a bearing with a skeleton oil seal is provided at the connection between the connecting rod and the piston rod, and an air valve is provided on the side wall of the cylinder part, and the number of the air valves is four, which are symmetrically arranged in a group of two on both sides of the cylinder part, and the two air valves on the same side are arranged at intervals, and the air valve is installed on the cylinder part by fastening bolts, and an air valve sealing component is provided at the connection between each of the air valves and the cylinder part.

[0006] The stuffing bin part and the cylinder part are connected by fastening bolts, and a stuffing bin sealing component is arranged at the connection point.

[0007] The middle body part and the stuffing bin part are connected by fastening bolts, and a middle body sealing component is arranged at the connection point.

[0008] The connecting part is connected to the middle body part by fastening bolts, and a connecting part sealing component is arranged at the connection point.

[0009] The end of the crankcase is provided with a self-lubricating sealing shaft seal, the two ends of the crankcase are provided with grease-lubricated bearings A with sealing rings, and the crankshaft is provided with grease-lubricated bearings B with sealing rings.

[0010] The top cover sealing component, the air valve sealing component, the stuffing bin sealing component, the middle body sealing component and the connecting part sealing component all adopt large-angle O-shaped sealing rings.

[0011] The beneficial effects of the utility model are as follows: by adopting large-angle O-rings and self-lubricating shaft seals to seal the compressor at the joints of the components, high sealing performance with zero leakage is achieved, the working efficiency of the compressor is improved, safety hazards are avoided, and the current requirements for compressors that are constantly improving are met. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model.

[0013] Figure 2 A schematic side view of the crankcase.

[0014] In the figure: 1. cylinder part, 2. piston, 201. piston rod, 3. air valve, 4. stuffing bin part, 5. middle body part, 6. connecting part, 7. crankcase, 8. bearing with skeleton oil seal, 9. connecting rod, 10. connecting part sealing component, 11. middle body sealing component, 12. stuffing bin sealing component, 13. air valve sealing component, 14. top cover sealing component, 15. top cover, 16. self-lubricating sealing shaft seal, 17. grease-lubricated bearing A with sealing ring, 18. grease-lubricated bearing B with sealing ring. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings of this specification to clearly and completely describe the technical solution of the utility model. It should be noted that the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] See also Figure 1 - Figure 2A wind-cooled double-acting compressor with a zero-leakage sealing device, three heads are arranged on the crankcase 7 of the compressor, the heads include a cylinder part 1, a stuffing bin part 4, a middle body part 5, a connecting part 6 and a sealing device, a top cover 15 is provided on the top of the cylinder part 1, and its bottom is connected to the top of the stuffing bin part 4, the bottom of the stuffing bin part 4 is connected to the top of the middle body part 5, the bottom of the middle body part 5 is connected to the top of the connecting part 6, and the connecting part 6 is connected to the crankcase 7, the sealing device includes a top cover sealing component 14, an air valve sealing component 13, a stuffing bin sealing component 12, a middle body sealing component 11 and a connecting part sealing component 10, and the connection between the parts is sealed by the sealing device. The cylinder part 1 is connected to the top cover 15 by fastening bolts, and a top cover sealing component 14 is provided at the connection point; a piston 2 is provided inside the cylinder part 1, and the piston 2 is connected to one end of a piston rod 201, and the other end of the piston rod 201 passes through the stuffing bin part 4 and the middle body part 5 and is connected to a connecting rod 9 in the connecting part 6, and the other end of the connecting rod 9 is connected to the crankshaft of the crankcase 7, and a skeleton oil seal bearing 8 is provided at the connection point between the connecting rod 9 and the piston rod 201, and a gas valve 3 is provided on the side wall of the cylinder part 1, and the number of the gas valves 3 is four, and two groups of two are symmetrically arranged on both sides of the cylinder part 1, and the two gas valves 3 on the same side are arranged at intervals, and the gas valve 3 is installed on the cylinder part 1 by fastening bolts, and a gas valve sealing component 13 is provided at the connection point between each gas valve 3 and the cylinder part 1. The stuffing bin part 4 is connected to the cylinder part 1 by fastening bolts, and a stuffing bin sealing component 12 is provided at the connection point. The middle body part 5 is connected to the stuffing bin part 4 by fastening bolts, and a middle body sealing component 11 is provided at the connection. The connecting part 6 is connected to the middle body part 5 by fastening bolts, and a connecting part sealing component 10 is provided at the connection. The end of the crankcase 7 is provided with a self-lubricating sealing shaft seal 16, and the two ends of the crankcase 7 are provided with a grease-lubricated bearing A17 with a sealing ring, and the crankshaft is provided with a grease-lubricated bearing B18 with a sealing ring. The top cover sealing component 14, the air valve sealing component 13, the stuffing bin sealing component 12, the middle body sealing component 11 and the connecting part sealing component 10 all use large-angle O-rings.

[0017] When the utility model is in use:

[0018] The static seal adopts a large bevel O-ring, which has a large bevel to improve the sealing performance of each connection part; the dynamic seal adopts a self-lubricating seal shaft seal 16, which seals the shaft end through the cooperation of grease, replacing the original skeleton oil seal, achieving a zero leakage sealing effect, which not only has a good sealing effect but also reduces the cost and is easy to use.

[0019] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0020] The parts not described in detail in this utility model are prior art.

Claims

1. An air-cooled double-acting compressor with a zero-leakage sealing device, characterized in that: The crankcase (7) of the compressor is provided with three heads, the heads comprising a cylinder part (1), a stuffing bin part (4), a middle body part (5), a connecting part (6) and a sealing device. The top of the cylinder part (1) is provided with a top cover (15), the bottom of which is connected to the top of the stuffing bin part (4), the bottom of the stuffing bin part (4) is connected to the top of the middle body part (5), the bottom of the middle body part (5) is connected to the top of the connecting part (6), and the connecting part (6) is connected to the crankcase (7). The sealing device comprises a top cover sealing component (14), an air valve sealing component (13), a stuffing bin sealing component (12), a middle body sealing component (11) and a connecting part sealing component (10), and the connection between the parts is sealed by the sealing device.

2. The air-cooled double-acting compressor with a zero-leakage sealing device according to claim 1, characterized in that: The cylinder part (1) is connected to the top cover (15) by fastening bolts, and a top cover sealing component (14) is provided at the connection point; a piston (2) is provided inside the cylinder part (1) and reciprocates in the cylinder, and the piston (2) is connected to one end of a piston rod (201), and the other end of the piston rod (201) passes through the stuffing box part (4) and the middle body part (5) and is connected to a connecting rod (9) in the connecting part (6), and the other end of the connecting rod (9) is connected to the crankcase (7). The connecting rod (9) and the piston rod (201) are connected to a crankshaft, a bearing (8) with a skeleton oil seal is provided at the connection between the connecting rod (9) and the piston rod (201), a gas valve (3) is provided on the side wall of the cylinder, the number of the gas valves (3) is four, two of which are symmetrically arranged on both sides of the cylinder part (1), and the two gas valves (3) on the same side are arranged at intervals, the gas valve (3) is mounted on the cylinder part (1) by fastening bolts, and a gas valve sealing component (13) is provided at the connection between each gas valve (3) and the cylinder part (1).

3. The air-cooled double-acting compressor with a zero-leakage sealing device according to claim 1, characterized in that: The stuffing bin part (4) is connected to the cylinder part (1) via fastening bolts, and a stuffing bin sealing component (12) is provided at the connection.

4. The air-cooled double-acting compressor with a zero-leakage sealing device according to claim 1, characterized in that: The middle body part (5) and the stuffing bin part (4) are connected by fastening bolts, and a middle body sealing component (11) is provided at the connection point.

5. The air-cooled double-acting compressor with a zero-leakage sealing device according to claim 1, characterized in that: The connecting portion (6) is connected to the middle body portion (5) by means of fastening bolts, and a connecting portion sealing component (10) is provided at the connection point.

6. The air-cooled double-acting compressor with a zero-leakage sealing device according to claim 1, characterized in that: The end of the crankcase (7) is provided with a self-lubricating sealing shaft seal (16), the two ends of the crankcase (7) are provided with grease-lubricated bearings A (17) with sealing rings, and the crankshaft is provided with grease-lubricated bearings B (18) with sealing rings.

7. The air-cooled double-acting compressor with a zero-leakage sealing device according to claim 1, characterized in that: The top cover sealing component (14), the air valve sealing component (13), the stuffing bin sealing component (12), the middle body sealing component (11) and the connecting part sealing component (10) all use large-angle O-shaped sealing rings.

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