CN221033046U

CN221033046U - Compressor unloader

Info

Publication number: CN221033046U
Application number: CN202322757809.6U
Authority: CN
Inventors: 潘锐
Original assignee: Chengdu Bolei Chemical Machinery Co ltd
Current assignee: Chengdu Bolei Chemical Machinery Co ltd
Priority date: 2023-10-16
Filing date: 2023-10-16
Publication date: 2024-05-28
Anticipated expiration: 2033-10-16

Abstract

The utility model relates to the technical field of unloading devices, in particular to a compressor unloading device, which comprises a valve body, wherein an adjusting mechanism is arranged on the surface of the valve body, the adjusting mechanism comprises a plunger, the top of the valve body is movably connected with a diaphragm, a spring is movably sleeved on the surface of the valve body, and the top of the diaphragm is movably connected with an upper cover. The utility model has the advantages that the indicator is arranged, so that whether the moving part of the unloader moves in place or not can be observed during working, and the unloading task is completed; the installation is simple, the connection with the valve cover of the compressor air valve is threaded connection, and the installation is simple and reliable; the elastic element membrane adopts a composite structure of chlorohydrin rubber and nylon cloth, so that not only is enough elasticity ensured, but also enough toughness is ensured, and meanwhile, the flange structure is designed on the membrane, so that the tightness of the sealing element can be ensured; the number of the O-shaped rings can be changed according to the pressure level of the compressor cylinder, so that the gas in the compressor cylinder can be ensured not to leak out.

Description

Compressor unloader

Technical Field

The utility model relates to the technical field of unloading devices, in particular to a compressor unloading device.

Background

In recent years, a new way of gas flow regulation has emerged in the field of piston compressors: the unloader is regulated, namely, the unloader is used for forcibly opening an air inlet automatic valve of a piston compressor by a mechanical mode, so that an air inlet of a corresponding cylinder is always completely opened, no compression process exists in the cylinder, and air sucked by the cylinder returns to an air inlet cavity in an air exhaust process, and the working volume displacement is zero as a result. The way of regulating the air quantity is generally used for a double-acting piston compressor, namely, the two sides of a piston are provided with the working volume with the same level, the working volume of any side can be disabled when an unloader works, even if the double-acting cylinder is changed into a single-acting cylinder, the air displacement is halved, and conversely, the air displacement of the cylinder can be restored to one hundred percent when the unloader does not work, and the unloader can be used on the two sides of the piston, so that the air displacement of the corresponding cylinder can be zero.

However, the conventional unloading device usually uses an actuating element fixed on the cylinder shell of the piston compressor and a net-shaped air inlet automatic valve with an unloading fork in the cylinder to push the unloading fork to forcibly open an air inlet valve by using a push rod in the actuating element to complete the unloading function, and as for the source of the force for pushing the push rod, pneumatic and electromagnetic modes are commonly used, namely, pneumatic bellows, pneumatic plungers or electromagnetic modes are adopted to provide power, and more pneumatic bellows type unloading devices are low in economical efficiency, so that in order to solve the technical problems, a compressor unloading device is designed.

Disclosure of utility model

The utility model aims to provide a compressor unloader, which has the advantages of higher economy, simple installation and capability of observing whether a moving part of the unloader moves in place during working, and solves the problem that the conventional unloader usually uses an actuating element fixed on a cylinder shell of a piston compressor to be matched with a net-shaped air inlet automatic valve with an unloading fork in a cylinder to push the unloading fork to forcibly open an air inlet valve by using a push rod in the actuating element so as to finish the unloading function.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a compressor unloader, includes the valve body, the surface mounting of valve body has adjustment mechanism, adjustment mechanism includes the plunger, the top swing joint of valve body has the diaphragm, the surface movable sleeve of valve body is equipped with the spring, the top swing joint of diaphragm has the upper cover, the top of upper cover runs through and is provided with bolt one, the bottom of bolt one is in proper order run through upper cover, diaphragm and disk seat and thread bush are equipped with nut two, the surface mounting of upper cover has indicating mechanism, the surface mounting of plunger has fixed establishment, fixed establishment includes the diaphragm top board, the right side thread mosaic intercommunication of upper cover has straight-through coupling first, the inner wall mounting gasket fourth of straight-through coupling first, the right side thread mosaic intercommunication of valve body has straight-through coupling second, straight-through coupling second's surface thread bush is equipped with nut three.

Preferably, the adjusting mechanism comprises an adjusting nut, the plunger penetrates through the bottom of the valve body, a first nut is sleeved on the surface of one end of the plunger outside the valve body in a threaded mode, the adjusting nut is sleeved on the surface of the bottom end of the plunger in a threaded mode, an O-shaped ring is sleeved on the surface of the plunger in a clamping mode, the surface of the O-shaped ring is in contact with the inner wall of the valve body, and the bottom of the spring is in contact with the inner wall of the valve body.

Preferably, the fixing mechanism comprises a diaphragm lower pressing plate, the top of the diaphragm lower pressing plate is in contact with the bottom of the diaphragm, the movable sleeve of the diaphragm upper pressing plate is clamped at the top of the diaphragm, the top of the plunger penetrates to the top of the diaphragm lower pressing plate and is provided with a nut IV in a threaded sleeve mode, the bottom of the diaphragm lower pressing plate is provided with a bolt II in a penetrating mode, the top of the bolt II penetrates through the diaphragm lower pressing plate and is in threaded connection with the diaphragm upper pressing plate, a first gasket is arranged between the bolt II and the diaphragm lower pressing plate, the surface of the bolt II is movably sleeved with the first gasket, and the top of the spring is in contact with the bottom of the diaphragm lower pressing plate.

Preferably, the indicating mechanism comprises a head nut and a pointer rod, the head nut is sleeved on the top of the surface of the upper cover in a threaded mode, the pointer rod is located in an inner cavity of the upper cover, a glass tube is sleeved on the top of the surface of the pointer rod, a second gasket is movably connected to the bottom of the glass tube, a third gasket is movably connected to the top of the glass tube, the bottom of the second gasket is in contact with the top of the upper cover, the top of the third gasket is in contact with the top of the inner cavity of the head nut, and the bottom of the pointer rod is inserted into the top of the upper pressing plate of the diaphragm.

Preferably, the valve body comprises a valve seat and a lower housing, the top of the valve seat is welded with the bottom of the lower housing, and the nut III is arranged on the right side of the valve seat.

Preferably, the upper cover comprises a joint and an upper housing, the bottom of the joint is welded with the top of the upper housing, the first straight-through pipe joint is arranged on the right side of the joint, and three layers of nylon canvas are arranged in the membrane for reinforcement.

Compared with the prior art, the utility model has the following beneficial effects:

1. The utility model utilizes the unloading device to adjust the displacement of the compressor, in the double-acting cylinder, by not pushing up the suction valve, or pushing up one side suction valve, or pushing up both sides suction valve at the same time, can realize 0, 50%, 100% three-stage adjustment, because the gas is continuously flowed in and out from the suction valve, the resistance loss caused by that the gas is greater than the normal work of the air valve, so the consumption of the unit gas is increased, but the total power consumption is greatly reduced, when the unloading device is adjusted and used, the remote control can be realized after the entry and the emptying of the instrument gas are controlled by the electromagnetic valve, the desired adjusting effect can be embodied in multistage compressors, because the unloading device is a moving part, the overall adjusting reliability is reduced, for the special compressor without lubrication, the special compressor needs to be considered, particularly, the compressor with flammable and explosive gas medium has higher economical efficiency because the unloading device is used for adjusting the displacement, the indicating work is the work consumed for overcoming the resistance of the full-opening air inlet valve.

2. The utility model has the advantages that the indicator is arranged, so that whether the moving part of the unloader moves in place or not can be observed during working, and the unloading task is completed; the installation is simple, the connection with the valve cover of the compressor air valve is threaded connection, and the installation is simple and reliable; the elastic element membrane adopts a composite structure of chlorohydrin rubber and nylon cloth, so that not only is enough elasticity ensured, but also enough toughness is ensured, and meanwhile, the flange structure is designed on the membrane, so that the tightness of the sealing element can be ensured; the number of the O-shaped rings can be changed according to the pressure level of the compressor cylinder, so that the gas in the compressor cylinder can be ensured not to leak out.

Drawings

FIG. 1 is a schematic view of a front view partially in cross-section of the structure of the present utility model;

FIG. 2 is a schematic top view of the adjustment nut of the present utility model;

FIG. 3 is a schematic top cross-sectional view of a first nut of the present utility model;

FIG. 4 is a schematic elevational cross-sectional view of a valve seat of the present utility model;

FIG. 5 is a schematic view in elevation and partial cross-section of a spring of the present utility model;

FIG. 6 is a schematic elevational cross-sectional view of a diaphragm of the present utility model;

FIG. 7 is a schematic elevational cross-sectional view of a fitting of the present utility model;

FIG. 8 is a schematic top view of the lower platen of the diaphragm of the present utility model;

FIG. 9 is a schematic top view of the upper platen of the membrane of the present utility model;

FIG. 10 is a schematic top view of a glass tube of the present utility model;

FIG. 11 is a schematic side cross-sectional view of a cap nut of the present utility model;

FIG. 12 is a schematic top cross-sectional view of a valve seat of the present utility model;

FIG. 13 is a schematic elevational cross-sectional view of a second straight-through coupler of the present utility model;

Fig. 14 is a schematic top cross-sectional view of a joint of the present utility model.

In the figure: 1. an adjusting nut; 2. a first nut; 3. a plunger; 4. an O-ring; 5. a valve body; 51. a valve seat; 52. a lower housing; 6. a spring; 7. a second nut; 8. a first bolt; 9. a membrane; 10. an upper cover; 101. a joint; 102. an upper housing; 11. a diaphragm lower pressure plate; 12. a second bolt; 13. a first gasket; 14. a diaphragm upper press plate; 15. a second gasket; 16. a glass tube; 17. a third gasket; 18. a seal head nut; 19. a pointer rod; 20. a gasket IV; 21. a straight-through pipe joint I; 22. a third nut; 23. a straight-through pipe joint II; 24. a nut IV; 25. an adjusting mechanism; 26. a fixing mechanism; 27. an indication mechanism.

Detailed Description

Referring to fig. 1-14, a compressor unloader comprises a valve body 5, an adjusting mechanism 25 is mounted on the surface of the valve body 5, the adjusting mechanism 25 comprises a plunger 3, a diaphragm 9 is movably connected to the top of the valve body 5, a spring 6 is movably sleeved on the surface of the valve body 5, an upper cover 10 is movably connected to the top of the diaphragm 9, a first bolt 8 penetrates through the top of the upper cover 10, a second nut 7 penetrates through the bottom end of the first bolt 8 in sequence, the diaphragm 9 and a valve seat 51 are sleeved on the bottom end of the first bolt in a threaded manner, an indicating mechanism 27 is mounted on the surface of the upper cover 10, a fixing mechanism 26 is mounted on the surface of the plunger 3, the fixing mechanism 26 comprises a diaphragm upper pressing plate 14, a first through pipe joint 21 is in threaded mosaic communication with the right side of the upper cover 10, a gasket four 20 is mounted on the inner wall of the first through pipe joint 21, a second through pipe joint 23 is in threaded mosaic communication with the right side of the valve body 5, and a third nut 22 is in threaded mosaic with the surface of the second through pipe joint 23.

Referring to fig. 1, 2, 3 and 4, the adjusting mechanism 25 includes an adjusting nut 1, a plunger 3 penetrates through the bottom of a valve body 5, a first nut 2 is sleeved on the surface of one end of the plunger 3 outside the valve body 5, the adjusting nut 1 is sleeved on the surface of the bottom end of the plunger 3, an O-shaped ring 4 is sleeved on the surface of the plunger 3, the number of the sealing between the plunger 3 and a valve seat 51 can be changed according to the pressure level of a compressor cylinder, the gas in the compressor cylinder can be prevented from leaking, the surface of the O-shaped ring 4 is in contact with the inner wall of the valve body 5, and the bottom of a spring 6 is in contact with the inner wall of the valve body 5.

Referring to fig. 1, 5, 6, 8 and 9, the fixing mechanism 26 includes a diaphragm lower plate 11, the top of the diaphragm lower plate 11 contacts with the bottom of the diaphragm 9, the diaphragm upper plate 14 is movably sleeved and clamped on the top of the diaphragm 9, by arranging the diaphragm 9 and adopting a composite structure of chlorohydrin rubber and nylon cloth, sufficient elasticity is ensured, sufficient toughness is ensured, a flange structure is designed on the diaphragm 9, tightness of a sealing element can be ensured, the top end of the plunger 3 penetrates to the top of the diaphragm lower plate 11 and is sleeved with a nut four 24 in a threaded manner, the bottom of the diaphragm lower plate 11 penetrates and is provided with a bolt two 12, the top end of the bolt two 12 penetrates through the diaphragm lower plate 11 and is in threaded connection with the diaphragm upper plate 14, a gasket one 13 is arranged between the bolt two 12 and the diaphragm lower plate 11, the gasket one 13 is movably sleeved on the surface of the bolt two 12, and the top of the spring 6 contacts with the bottom of the diaphragm lower plate 11.

Referring to fig. 1, 10 and 11, the indicating mechanism 27 includes a cap nut 18 and a pointer rod 19, the cap nut 18 is screwed on the top of the surface of the upper cover 10, the pointer rod 19 is located in the inner cavity of the upper cover 10, by setting the pointer rod 19, it can be observed whether the moving part of the unloader moves in place during working, the unloading task is completed, the top of the surface of the pointer rod 19 is sleeved with a glass tube 16, the bottom of the glass tube 16 is movably connected with a second gasket 15, the top of the glass tube 16 is movably connected with a third gasket 17, the bottom of the second gasket 15 contacts with the top of the upper cover 10, the top of the third gasket 17 contacts with the top of the inner cavity of the cap nut 18, and the bottom of the pointer rod 19 is inserted into the top of the diaphragm upper pressing plate 14.

Referring to fig. 1, 4, 12 and 13, the valve body 5 includes a valve seat 51 and a lower casing 52, the top of the valve seat 51 is welded with the bottom of the lower casing 52, and by providing the valve seat 51, the lower half of the spring 6 is limited, so as to prevent the spring 6 from moving, and the third nut 22 is installed on the right side of the valve seat 51.

Referring to fig. 1, 7 and 14, the upper cover 10 includes a joint 101 and an upper casing 102, the bottom of the joint 101 is welded with the top of the upper casing 102, the joint 101 is provided to limit the index rod 19 and not to block the index rod from moving up and down, the straight pipe joint 21 is installed on the right side of the joint 101, and three layers of nylon canvas are reinforced inside the membrane 9.

When the high-pressure gas enters the capsule through the interface at the top of the capsule, the gas pressure in the capsule is increased, the elastic membrane 9 in the capsule is deformed in the direction of pressure difference, the plunger 3 is pushed to move outwards, the unloading fork is pushed to move along the axial direction after contacting with the unloading fork on the air inlet valve, until each top fork on the unloading fork completely pushes the air inlet valve plate open, the air inlet valve cannot be closed by itself, the air inlet channel is completely opened, the gas entering the cylinder can flow back along the channel freely, the gas is not compressed and pressurized, the exhaust valve cannot be opened, so that the displacement of the working volume is zero, when the high-pressure gas is discharged out of the capsule through the same interface at the top of the capsule, the elastic membrane 9 in the capsule drives the unloader plunger 3 to restore to the original position, after the unloading fork on the air inlet valve is not pushed by the plunger 3, the unloading fork is restored to the original position by the spring 6 of the unloading fork, each top fork is separated from the air valve plate, the air valve is in the normal working state again, and the air valve is not controlled by the unloader, at the moment, the working volume is restored to the design state, and the air inlet and exhaust is normal.

To sum up: according to the compressor unloader, an adjusting nut 1, a first nut 2, a plunger 3, an O-shaped ring 4, a valve body 5, a spring 6, a diaphragm 9, an upper cover 10, a diaphragm lower pressing plate 11, a second bolt 12, a first gasket 13, a diaphragm upper pressing plate 14, a glass tube 16, a head nut 18, a pointer rod 19, a first straight-through pipe joint 21, a third nut 22, a second straight-through pipe joint 23 and a fourth nut 24 are matched, so that the problem that an existing common unloader is usually realized by that an actuating piece fixed on a cylinder shell of a piston compressor is matched with a net-shaped air inlet automatic valve with an unloading fork in a cylinder, and the unloading fork is pushed by an ejector rod in the actuating piece to forcibly open an air inlet valve, and the unloading effect is completed.

Claims

1. Compressor unloader, comprising a valve body (5), characterized in that: the surface mounting of valve body (5) has adjustment mechanism (25), adjustment mechanism (25) include plunger (3), the top swing joint of valve body (5) has diaphragm (9), the surface swing joint of valve body (5) is equipped with spring (6), the top swing joint of diaphragm (9) has upper cover (10), the top of upper cover (10) is run through and is provided with bolt one (8), the bottom of bolt one (8) is run through upper cover (10), diaphragm (9) and disk seat (51) and thread bush in proper order and is equipped with nut two (7), the surface mounting of upper cover (10) has indicating mechanism (27), the surface mounting of plunger (3) has fixed establishment (26), fixed establishment (26) include diaphragm upper pressure plate (14), the right side screw thread inlay intercommunication of upper cover (10) has straight-through coupling one (21), the inner wall mounting of straight-through coupling one (21) has gasket four (20), the right side screw thread inlay intercommunication of valve body (5) has straight-through two (23), the surface mounting of straight coupling two (23) is equipped with three thread bush (22).

2. A compressor unloader as claimed in claim 1, wherein: the adjusting mechanism (25) comprises an adjusting nut (1), the plunger (3) penetrates through the bottom of the valve body (5), a first nut (2) is sleeved on the surface of one end of the outside of the valve body (5) through threads, the adjusting nut (1) is sleeved on the surface of the bottom end of the plunger (3) through threads, an O-shaped ring (4) is sleeved on the surface of the plunger (3), the surface of the O-shaped ring (4) is in contact with the inner wall of the valve body (5), and the bottom of the spring (6) is in contact with the inner wall of the valve body (5).

3. A compressor unloader as claimed in claim 1, wherein: the fixing mechanism (26) comprises a diaphragm lower pressing plate (11), the top of the diaphragm lower pressing plate (11) is in contact with the bottom of the diaphragm (9), the diaphragm upper pressing plate (14) is movably sleeved with the top of the diaphragm (9), the top of the plunger (3) penetrates through the top of the diaphragm lower pressing plate (11) and is provided with a nut IV (24) in a threaded mode, the bottom of the diaphragm lower pressing plate (11) is provided with a bolt II (12) in a penetrating mode, the top of the bolt II (12) penetrates through the diaphragm lower pressing plate (11) and is in threaded connection with the diaphragm upper pressing plate (14), a first gasket (13) is arranged between the bolt II (12) and the diaphragm lower pressing plate (11), the surface of the bolt II (12) is movably sleeved with the first gasket (13), and the top of the spring (6) is in contact with the bottom of the diaphragm lower pressing plate (11).

4. A compressor unloader as claimed in claim 1, wherein: the indicating mechanism (27) comprises a seal head nut (18) and a pointer rod (19), wherein the seal head nut (18) is sleeved on the top of the surface of the upper cover (10) in a threaded mode, the pointer rod (19) is located in an inner cavity of the upper cover (10), a glass tube (16) is sleeved on the top of the surface of the pointer rod (19), a second gasket (15) is movably connected to the bottom of the glass tube (16), a third gasket (17) is movably connected to the top of the glass tube (16), the bottom of the second gasket (15) is in contact with the top of the upper cover (10), the top of the third gasket (17) is in contact with the top of the inner cavity of the seal head nut (18), and the bottom of the pointer rod (19) is spliced on the top of the membrane upper pressing plate (14).

5. A compressor unloader as claimed in claim 1, wherein: the valve body (5) comprises a valve seat (51) and a lower housing (52), the top of the valve seat (51) is welded with the bottom of the lower housing (52), and the nut III (22) is arranged on the right side of the valve seat (51).

6. A compressor unloader as claimed in claim 1, wherein: the upper cover (10) comprises a joint (101) and an upper housing (102), the bottom of the joint (101) is welded with the top of the upper housing (102), a first straight-through pipe joint (21) is arranged on the right side of the joint (101), and three layers of nylon canvas are arranged in the membrane (9) for reinforcement.