阅读说明：本技术 一种双螺杆空压机喷油装置 (Double screw air compressor machine fueling injection equipment ) 是由 曹步尧 于 2021-09-14 设计创作，主要内容包括：本发明涉及机械产业技术领域,且公开了一种双螺杆空压机喷油装置,包括底座、位于底座内的压缩腔、位于压缩腔内的螺杆、位于底座两端的进气口和排气口,所述底座底部靠近进气口的一端开设有喷油口I。本发明通过设计的挤压板、顶压块、阀板,使感压腔内的温度过高或过低使得喷油量加大或减小后,内部高温无法及时排出导致较大喷油量持续输出或内部持续低温导致硬性摩擦和压缩气体产生的温度无法及时增大感压腔内温度差时,能通过挤压板在转动调节弹性胶管的管径大小时,顶压块同步带动阀板进行移动,从而使阀板上的阀口大小发生同步变化,从而使输入的冷却液增大或减少,使感压腔内的温度能完成快速调节。(The invention relates to the technical field of mechanical industry, and discloses an oil injection device of a double-screw air compressor, which comprises a base, a compression cavity positioned in the base, a screw positioned in the compression cavity, an air inlet and an air outlet positioned at two ends of the base, wherein an oil injection port I is formed at one end, close to the air inlet, of the bottom of the base. According to the invention, through the designed extrusion plate, the jacking block and the valve plate, when the temperature in the pressure sensing cavity is too high or too low, so that the fuel injection quantity is increased or reduced, the internal high temperature cannot be timely discharged to cause continuous output of larger fuel injection quantity or the internal continuous low temperature causes hard friction and the temperature generated by compressed gas cannot be timely increased to increase the temperature difference in the pressure sensing cavity, the jacking block can synchronously drive the valve plate to move when the pipe diameter of the elastic rubber pipe is adjusted through rotation of the extrusion plate, so that the size of a valve port on the valve plate is synchronously changed, the input cooling liquid is increased or reduced, and the temperature in the pressure sensing cavity can be quickly adjusted.)

1. The utility model provides a double screw air compressor machine fueling injection equipment, includes base (1), is located compression chamber (2) in base (1), is located screw rod (3) of compression chamber (2), is located air inlet (4) and gas vent (5) at base (1) both ends, its characterized in that: an oil injection port I (6) is formed in one end, close to an air inlet (4), of the bottom of the base (1), three evenly distributed oil injection ports II (7) are formed in the bottom of the compression cavity (2), three evenly distributed pressure sensing cavities (8) are formed in the bottom of the base (1), a cooling ring pipe (18) is wound outside the tops of the pressure sensing cavities (8), a spring I (9) is fixedly connected to the bottom end of the pressure sensing cavity (8), a pressure sensing piston (10) is fixedly connected to the top end of the spring I (9), symmetrical magnets I (101) are fixedly connected to the middle of the pressure sensing piston (10), a reducer pipe (12) is movably sleeved in the center of the pressure sensing piston (10), an oil inlet (121) is formed in the center of the bottom end of the reducer pipe (12), an oil conveying pipe (11) is fixedly connected to the bottom end of the reducer pipe (12), and an elastic rubber pipe (13) is movably sleeved in the reducer pipe (12), the variable-diameter pipe is characterized in that symmetrical hinged rollers (14) are fixedly connected to the bottom of the variable-diameter pipe (12), squeezing plates (15) are hinged to the hinged rollers (14), springs II (17) are fixedly connected to the tops of the squeezing plates (15), uniformly distributed magnets II (16) are fixedly connected to the tops of the squeezing plates (15), a top pressing block (151) is fixedly connected to the bottom of one squeezing plate (15), uniformly distributed movable cavities (21) are formed in the bottom of the base (1), springs III (20) are fixedly connected to one ends of the movable cavities (21), a valve plate (19) is fixedly connected to one ends of the springs III (20), and a valve port (191) is formed in the valve plate (19).

2. The oil injection device of the double-screw air compressor as claimed in claim 1, wherein: the oil spout I (6) and the one end intercommunication that compression chamber (2) are close to air inlet (4), the top center in pressure sensing chamber (8) is through oil spout II (7) and compression chamber (2) intercommunication, the distance value of the top in pressure sensing chamber (8) and compression chamber (2) bottom is four centimetres, concora crush hole (801) with external intercommunication are seted up to the bottom in pressure sensing chamber (8), the outside of pressure sensing piston (10) and the inner wall laminating in pressure sensing chamber (8).

3. The oil injection device of the double-screw air compressor as claimed in claim 1, wherein: and in the direction from the air inlet (4) to the air outlet (5), the elastic force values of the three springs I (9) are gradually increased.

4. The oil injection device of the double-screw air compressor as claimed in claim 1, wherein: the reducer pipe (12) is a hollow cuboid, the length value and the width value of the reducer pipe (12) are the same, and the top end and the bottom of the reducer pipe (12) are fixedly connected with the top end and the bottom of the pressure sensing cavity (8).

5. The oil injection device of the double-screw air compressor as claimed in claim 1, wherein: the bottom end of the elastic rubber tube (13) is fixedly connected with the oil inlet (121), the top end of the elastic rubber tube (13) is fixedly connected with the bottom end of the oil spray opening II (7), and the diameter value of the elastic rubber tube (13) is half of the length value of the reducer pipe (12).

6. The oil injection device of the double-screw air compressor as claimed in claim 1, wherein: the extrusion plate (15) is attached to the elastic rubber tube (13), the width of the extrusion plate (15) is nine times of zero of the width of the reducer pipe (12), the top end of the extrusion plate (15) is arc-shaped, and the bottom surface of the top pressing block (151) is an inclined surface.

7. The oil injection device of the double-screw air compressor as claimed in claim 1, wherein: the magnetic force of the magnet II (16) is gradually reduced from top to bottom, and the opposite surfaces of the magnet II (16) and the magnet I (101) are homopolar.

8. The oil injection device of the double-screw air compressor as claimed in claim 1, wherein: and the other end of the cooling ring pipe (18) is fixedly connected with a cold liquid outlet pipe (182), and the cooling ring pipe (18) is communicated with a cooling circulation system of the air compressor through a cold liquid inlet pipe (181) and the cold liquid outlet pipe (182).

9. The oil injection device of the double-screw air compressor as claimed in claim 1, wherein: the valve plate (19) penetrates through the cold liquid inlet pipe (181) and the flat pressing hole (801) to the inner cavity of the reducer pipe (12), one end, located in the inner cavity of the reducer pipe (12), of the valve plate (19) is arc-shaped, the same end of the valve plate (19) is attached to the inclined surface of the top pressing block (151), and the valve port (191) is located in the center of the cold liquid inlet pipe (181) when the spring III (20) is compressed to the maximum extent.

Technical Field

The invention relates to the technical field of mechanical industry, in particular to an oil injection device of a double-screw air compressor.

Background

Twin-screw air compressor, compress the gas that lets in through the continuous meshing of two screws, the gaseous device of discharge high-pressure gas, at the continuous meshing in-process of two screws, compressed gas's temperature constantly rises, rigid friction between the screw rod, the rigid friction of screw rod and compression chamber, make the vibrations of air compressor machine strengthen, make gas output fluctuation big, lead to the shortening of air compressor machine life, and long-time rigid friction needs bigger input power to support the normal operating of air compressor machine, so, current air compressor mostly all can let in fluid to the compression intracavity at compression chamber front end, make in the fluid sneaks into compressed gas, make the screw rod adhere fluid formation oil film at the in-process of meshing, reduce rigid friction, reduce the thermal damage.

However, after the existing oil is introduced into the compression cylinder, if the introduction amount of the oil is too small, the introduced oil is continuously consumed by the screws along the way in the process of advancing to the exhaust port, so that the screws close to the exhaust port cannot form a normal oil film or the thickness of the oil film is low, hard friction still exists, and when the introduction amount of the oil is too large, the introduced oil cannot be completely consumed by the screws to form the oil film, so that the oil-liquid content in the discharged unit compressed gas is high, and the difficulty is improved for subsequent oil-gas separation.

Disclosure of Invention

Aiming at the defects of the conventional oil injection device for the double-screw air compressor in the background technology in the use process, the invention provides the oil injection device for the double-screw air compressor, which has the advantages of injecting oil from multiple positions, raising the temperature through rigid friction and conducting heat through the temperature of compressed gas to form a pressure difference power source, changing the pipe diameter of an elastic rubber pipe to control the output quantity of the oil and adjusting the circulating quantity of cooling liquid to control the temperature value of the power source, and solves the technical problems of uncontrollable oil input quantity, damage caused by rigid friction and increased input power caused by rigid friction in the background technology.

The invention provides the following technical scheme: a double-screw air compressor oil injection device comprises a base, a compression cavity, a screw, an air inlet and an air outlet, wherein the compression cavity is arranged in the base, the screw is arranged in the compression cavity, the air inlet and the air outlet are arranged at two ends of the base, an oil injection port I is arranged at one end, close to the air inlet, of the bottom of the base, three oil injection ports II are uniformly distributed at the bottom of the compression cavity, three pressure sensing cavities are uniformly distributed at the bottom of the base, a cooling ring pipe is wound outside the top of each pressure sensing cavity, a spring I is fixedly connected at the bottom end of each pressure sensing cavity, a pressure sensing piston is fixedly connected at the top end of the spring I, symmetrical magnets I are fixedly connected at the middle part of the pressure sensing piston, a reducer pipe is movably sleeved at the center of the pressure sensing piston, an oil inlet is arranged at the bottom center of the reducer pipe, an oil delivery pipe is fixedly connected at the bottom end of the reducer pipe, an elastic rubber pipe is movably sleeved in the reducer pipe, symmetrical hinged rollers are fixedly connected at the bottom of the reducer pipe, the articulated roller is hinged with extrusion plates, the top of each extrusion plate is fixedly connected with springs II, the top of each extrusion plate is fixedly connected with uniformly distributed magnets II, the bottom of one extrusion plate is fixedly connected with a top pressing block, the bottom of the base is provided with uniformly distributed movable cavities, one ends of the movable cavities are fixedly connected with springs III, one ends of the springs III are fixedly connected with valve plates, and valve ports are formed in the valve plates.

Preferably, the oil injection port I is communicated with one end, close to the air inlet, of the compression cavity, the center of the top end of the pressure sensing cavity is communicated with the compression cavity through the oil injection port II, the distance value between the top end of the pressure sensing cavity and the bottom end of the compression cavity is four centimeters, a flat pressure hole communicated with the outside is formed in the bottom end of the pressure sensing cavity, and the outer side of the pressure sensing piston is attached to the inner wall of the pressure sensing cavity.

Preferably, the elastic force values of the three springs I are gradually increased in the direction from the air inlet to the air outlet.

Preferably, the reducing pipe is a hollow cuboid, the length value and the width value of the reducing pipe are the same, and the top end and the bottom of the reducing pipe are fixedly connected with the top end and the bottom of the pressure sensing cavity.

Preferably, the bottom end of the elastic rubber tube is fixedly connected with the oil inlet, the top end of the elastic rubber tube is fixedly connected with the bottom end of the oil injection port II, and the diameter value of the elastic rubber tube is half of the length value of the reducer pipe.

Preferably, the extrusion plate is attached to the elastic rubber pipe, the width of the extrusion plate is nine times of zero of the width of the reducer pipe, the top end of the extrusion plate is arc-shaped, and the bottom surface of the top pressing block is an inclined surface.

Preferably, the magnetic force of the magnet II decreases gradually from top to bottom, and the opposite surfaces of the magnet II and the magnet I are homopolar.

Preferably, the other end of the cooling loop is fixedly connected with a cold liquid outlet pipe, and the cooling loop is communicated with a cooling circulation system of the air compressor through the cold liquid inlet pipe and the cold liquid outlet pipe.

Preferably, the valve plate penetrates through the cold liquid inlet pipe and the flat pressing hole to the inner cavity of the reducing pipe, one end, located in the inner cavity of the reducing pipe, of the valve plate is arc-shaped, the same end of the valve plate is attached to the inclined surface of the top pressing block, and the valve port is located in the center of the cold liquid inlet pipe when the spring III is compressed to the maximum extent.

The invention has the following beneficial effects:

1. the invention can transmit the temperature of the compressed gas in the compression cavity and the temperature generated by the hard friction of the screw rods into the pressure sensing cavity through the designed pressure sensing cavity and the pressure sensing piston, so that a pressure difference environment is formed in the pressure sensing cavity under the influence of the temperature difference, the pressure sensing piston is displaced, and meanwhile, the displacement of the pressure sensing piston can drive the magnet I and the magnets II with different magnetic force sizes to be positioned on the same straight line through the designed magnet I, the magnet II, the extrusion plates and the elastic rubber tube, so that the repulsive force between the magnet I and the magnets II is changed, the distance between the two extrusion plates is changed, the pipe diameter size of the elastic rubber tube is changed, the circulation amount of the oil in the elastic rubber tube is changed, the oil amount sprayed into the compression cavity can be self-adjusted according to the actual condition, the phenomenon that the oil component in the output gas is more due to the overlarge oil amount and the oil spraying amount is too small, so that the oil spraying amount between the two screw rods is too small, Oil film between the two screws and the compression chamber cannot be formed, resulting in hard friction damage and increased input power.

2. According to the invention, through the designed extrusion plate, the jacking block and the valve plate, when the temperature in the pressure sensing cavity is too high or too low, so that the fuel injection quantity is increased or reduced, the internal high temperature cannot be timely discharged to cause continuous output of larger fuel injection quantity or the internal continuous low temperature causes hard friction and the temperature generated by compressed gas cannot be timely increased to increase the temperature difference in the pressure sensing cavity, the jacking block can synchronously drive the valve plate to move when the pipe diameter of the elastic rubber pipe is adjusted through rotation of the extrusion plate, so that the size of a valve port on the valve plate is synchronously changed, the input cooling liquid is increased or reduced, and the temperature in the pressure sensing cavity can be quickly adjusted.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of a pressure sensing chamber according to the present invention;

FIG. 3 is a schematic diagram illustrating a temperature rise in the pressure-sensing chamber according to the present invention;

FIG. 4 is an enlarged view of a portion of the structure A shown in FIG. 2 according to the present invention.

In the figure: 1. a base; 2. a compression chamber; 3. a screw; 4. an air inlet; 5. an exhaust port; 6. an oil injection port I; 7. an oil injection port II; 8. a pressure sensing chamber; 801. flattening the hole; 9. a spring I; 10. a pressure sensing piston; 101. a magnet I; 11. an oil delivery pipe; 12. a reducer pipe; 121. an oil inlet; 13. an elastic rubber tube; 14. a hinge roller; 15. a pressing plate; 151. pressing the block; 16. a magnet II; 17. a spring II; 18. a cooling loop; 181. a cold liquid inlet pipe; 182. a cold liquid outlet pipe; 19. a valve plate; 191. a valve port; 20. a spring III; 21. a movable cavity.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, a fuel injection device for a twin-screw air compressor comprises a base 1, a compression chamber 2 located in the base 1, a screw 3 located in the compression chamber 2, an air inlet 4 and an air outlet 5 located at two ends of the base 1, wherein one end of the bottom of the base 1 close to the air inlet 4 is provided with a fuel injection port I6, a fuel injection port I6 is communicated with one end of the compression chamber 2 close to the air inlet 4, so that the fuel injection port I6 injects initial lubricating oil to enable the screw 3 close to the air inlet 4 to form an oil film, the bottom of the compression chamber 2 is provided with three fuel injection ports II7 which are uniformly distributed, the bottom of the base 1 is provided with three pressure sensing chambers 8 which are uniformly distributed, the center of the top end of each pressure sensing chamber 8 is communicated with the compression chamber 2 through the fuel injection port II7, the distance between the top end of the pressure sensing chamber 8 and the bottom end of the compression chamber 2 is four centimeters, so that heat generated by hard friction between the two screws 3, hard friction of the screw 3 and the compression chamber 2 and heat generated by gas compression can be transferred into the pressure sensing chamber 8, the bottom end of the pressure sensing cavity 8 is provided with a flat pressure hole 801 communicated with the outside, so that the air pressure at the bottom of the pressure sensing cavity 8 always keeps balance with the outside, thereby the top of the pressure sensing cavity 8 can form air pressure difference under the influence of temperature difference after being heated, the bottom end of the pressure sensing cavity 8 is fixedly connected with a spring I9, the elastic force values of three springs I9 are gradually increased in the direction from the air inlet 4 to the air outlet 5, when more heat generated by continuous compression of air in the direction towards the air outlet 5 is transferred into the pressure sensing cavity 8, the air pressure at the top of the pressure sensing cavity 8 close to the air outlet 5 is higher, the movement value of the pressure sensing piston 10 can be kept relatively stable due to the increase of the elastic force of a spring I9, the problem that the oil content in the discharged compressed air is high due to the fact that the elastic rubber tube 13 is greatly opened to eject excessive oil is avoided, the top end of the spring I9 is fixedly connected with the pressure sensing piston 10, the outer side of the pressure sensing piston 10 is attached to the inner wall of the pressure sensing cavity 8, and symmetrical magnets I101 are fixedly connected to the middle of the pressure sensing piston 10.

Referring to fig. 1-3, a reducer pipe 12 is movably sleeved at the center of a pressure sensing piston 10, the reducer pipe 12 is a hollow cuboid, the length and width of the reducer pipe 12 are the same, so that an extrusion plate 15 can move freely, the top and bottom of the reducer pipe 12 are fixedly connected with the top and bottom of a pressure sensing cavity 8, an oil inlet 121 is formed in the center of the bottom end of the reducer pipe 12, an oil delivery pipe 11 is fixedly connected with the bottom end of the reducer pipe 12, the oil delivery pipe 11 is connected with an oil system, an elastic rubber pipe 13 is movably sleeved in the reducer pipe 12, the bottom end of the elastic rubber pipe 13 is fixedly connected with the oil inlet 121, the top end of the elastic rubber pipe 13 is fixedly connected with the bottom end of an oil injection port II7, so that oil cannot enter the reducer pipe 12 to cause the problem that the extrusion plate 15 fails to move, the diameter of the elastic rubber pipe 13 is half of the length of the reducer pipe 12, so that the elastic rubber pipe 13 can be completely covered by the extrusion plate 15, when the extrusion plate 15 extrudes the elastic rubber tube 13, the deformation of the elastic rubber tube 13 cannot exceed the coverage range of the extrusion plate 15, so that the problem that the adjustment of the pipe diameter of the elastic rubber tube 13 fails is solved.

Referring to fig. 1-3, symmetrical hinge rollers 14 are fixedly connected to the bottom of the reducer pipe 12, a squeeze plate 15 is hinged to the hinge rollers 14, the squeeze plate 15 is attached to the elastic rubber tube 13, so that the squeeze plate 15 can directly act on the elastic rubber tube 13 when moving, and the elastic rubber tube 13 can be rapidly deformed correspondingly, thereby achieving rapid control of oil liquid passing amount, the width of the squeeze plate 15 is nine times of the width of the reducer pipe 12, so that the squeeze plate 15 can not be limited by the diameter of the reducer pipe 12 when moving, and meanwhile, the squeeze plate 15 can completely press the elastic rubber tube 13, thereby avoiding the deformation of the elastic rubber tube 13 exceeding the coverage of the squeeze plate 15, causing the elastic rubber tube 13 to form a new flow channel after exceeding the squeeze plate 15, and causing the oil liquid to be sprayed out from the new flow channel, the top end of the squeeze plate 15 is arc-shaped, and when the elastic rubber tube 13 is squeezed by the squeeze plate 15, the problem that hard extrusion leads to elasticity rubber tube 13 life to shorten can not appear, the top fixedly connected with spring II17 of stripper plate 15, the other end of spring II17 and the inner wall top fixed connection of reducing pipe 12, the magnet II16 of the top fixedly connected with equipartition of stripper plate 15, magnet II16 from the top down magnetic force diminishes progressively, the opposite face of magnet II16 and magnet I101 is the homopolar, make pressure sensing piston 10 at the in-process that reciprocates, magnet I101 can be in the coplanar with the magnet II16 of different magnetic force size, make the mutual repulsion of magnet I101 and the magnet II16 of different magnetic force size change, make stripper plate 15 swing, make the minimum pipe diameter of elasticity rubber tube 13 constantly change, thereby adjust the jet volume size of fluid.

Referring to fig. 1-4, a pressing block 151 is fixedly connected to the bottom of one of the pressing plates 15, the bottom surface of the pressing block 151 is an inclined surface, so that the pressing block 151 can smoothly press the valve plate 19, a cooling loop 18 is wound around the top of the pressure sensing cavity 8, one end of the cooling loop 18 is fixedly connected with a cold liquid inlet pipe 181, the other end of the cooling loop 18 is fixedly connected with a cold liquid outlet pipe 182, the cooling loop 18 is communicated with a cooling circulation system of an air compressor through the cold liquid inlet pipe 181 and the cold liquid outlet pipe 182, so that the cooling loop 18 cools the heated gas at the top of the pressure sensing cavity 8, the situation that the heated gas keeps pressure after being heated and expanded and the oil discharge quantity is continuously increased is avoided, the bottom of the base 1 is provided with uniformly distributed movable cavities 21, one end of the movable cavity 21 is fixedly connected with a spring III20, one end of the spring III20 is fixedly connected with the valve plate 19, and the valve plate 19 is provided with a valve port 191, the valve plate 19 penetrates through the cold liquid inlet pipe 181, the flat pressing hole 801 to the inner cavity of the reducer pipe 12, one end of the valve plate 19 in the inner cavity of the reducer pipe 12 is arc-shaped, the same end of the valve plate 19 is attached to the inclined surface of the top pressing block 151, the valve port 191 is positioned in the center of the cold liquid inlet pipe 181 when the spring III20 has the maximum compression amount, so that after the temperature in the pressure sensing cavity 8 is too high or too low to increase or decrease the oil injection amount, when the internal high temperature cannot be discharged in time to cause the continuous output of larger fuel injection quantity or the internal continuous low temperature causes the hard friction and the temperature generated by the compressed gas to not increase the temperature difference in the pressure sensing cavity 8 in time, when the pipe diameter of the elastic rubber pipe 13 is adjusted by rotating the extrusion plate 15, the jacking block 151 synchronously drives the valve plate 19 to move, so that the size of the valve port 191 on the valve plate 19 is changed synchronously, the input cooling liquid is increased or reduced, and the temperature in the pressure sensing cavity 8 can be adjusted quickly.

The use method (working principle) of the invention is as follows:

firstly, the double-screw air compressor is started, so that the air is input into the compression cavity 2 from the air inlet 4, the two screws 3 in the compression cavity 2 compress the air in the meshing process and gradually push the air to the air outlet 5, meanwhile, oil is sprayed from an oil spray port I6, so that the oil is mixed with compressed air, partial oil is contacted with the two screws 3 in the meshing process, oil films are formed between the two screws 3 and the compression cavity 2 by the oil, and the oil in the compressed air is gradually consumed at the moment, then, after the oil film is not formed on the screw 3 around the oil injection port II7 or the oil film is gradually consumed, the hard friction between the two screws 3, the two screws 3 and the compression chamber 2 and the temperature of the compressed gas are transmitted to the top of the pressure sensing chamber 8 below the oil injection port II7, so that the temperature of the top of the pressure sensing chamber 8 is gradually increased, and the gas expands, so that the pressure sensing piston 10 gradually moves downwards under the pressure difference;

then, the magnet I101 synchronously moves downwards to enable the magnet I101 and the magnet II16 with smaller magnetism below to be positioned on the same straight line, the repulsive force between the magnet I101 and the magnet II16 is reduced, so that the two extrusion plates 15 with the tops extruding the elastic rubber tube 13 to be attached rotate around the hinged roller 14, the minimum pipe diameter of the elastic rubber tube 13 is gradually increased, oil is sprayed out through the oil spray opening II7, the two screw rods 3 around the oil spray opening II7 are enabled to contact part of the oil in the meshing process, the oil forms oil films between the two screw rods 3, the two screw rods 3 and the compression cavity 2, at the moment, the hard friction disappears, the oil film blocks part of compressed air temperature, meanwhile, the rotation of the extrusion plate 15 enables the top pressing block 151 to extrude the valve plate 19, so that the valve plate 19 moves to one side far away from the extrusion plate 15, the caliber of the valve port 191 is synchronously enlarged, the flow of the cooling liquid input into the cooling ring pipe 18 is enlarged, and the temperature at the top of the pressure sensing cavity 8 is gradually recovered;

finally, when the temperature at the top of the pressure sensing cavity 8 is gradually recovered, the pressure sensing piston 10 is gradually lifted, the magnet I101 and the magnet II16 with the higher magnetism above are positioned on the same straight line, the repulsive force between the magnet I101 and the magnet II16 is increased, the two extrusion plates 15 rotate around the hinged roller 14 again to extrude the elastic rubber tube 13, the pipe diameter of the pressed part of the elastic rubber tube 13 is gradually reduced until the elastic rubber tube is closed, the ejection quantity of the oil is gradually reduced until the input is stopped, and finally, after the oil film near the oil injection port II7 in the compression cavity 2 is consumed again, the actions in the pressure sensing cavity 8 are repeated, and the oil is ejected.

It is noted that, herein, relational terms such as first and second, and the like may be 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. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.