Energy-saving hydraulic drive air compressor

Abstract

The invention relates to an energy-saving hydraulic drive air compressor, and belongs to the technical field of air compressors, the energy-saving hydraulic drive air compressor comprises a shell, a main piston, a main shaft and a compression piston, a control chamber and an air chamber which are mutually independent are arranged in the shell, the main piston is slidably arranged in the control chamber, and the compression piston is slidably arranged in the air chamber; the sectional area of the air chamber is larger than that of the control chamber, a baffle ring plug is arranged in the air chamber in a sliding mode, the outer diameter of the baffle ring plug is equal to the outer diameter of the compression piston, and the inner diameter of the baffle ring plug is smaller than the outer diameter of the main piston. The connecting rod slidably penetrates through the shell and extends into the air chamber, sliding rods slidably penetrate through the connecting rod, the multiple sliding rods are connected with the baffle ring plug, and an adjusting assembly used for adjusting sliding and fixing of the sliding rods is arranged on the connecting rod. The air compressor has the advantages that hydraulic oil is saved, and the air compression efficiency is improved to a certain extent.

Description

Technical Field

[0001] The present application relates to the technical field of air compressors, and in particular to an energy-saving hydraulically driven air compressor. Background Art

[0002] Air compressor, also known as air compressor, is a mechanical device that stores energy by compressing gas. Air compressors can be divided into hydraulic drive, electric drive, internal combustion engine drive, etc. according to the driving mode. Among them, hydraulic drive air compressor drives the compressor to work through the hydraulic system. It has the advantages of low energy loss and light weight, and is widely used in industrial and household air conditioners.

[0003] In the related art, a Chinese patent document with publication number CN111075684A discloses a hydraulically driven air compressor, including a housing, a main piston, a first piston and a main shaft, wherein a control chamber and a first air chamber are provided inside the housing, wherein the main piston is slidably arranged in the control chamber, and the first piston is slidably arranged in the first air chamber; the main shaft is located inside the housing and slides through the main piston in the axial direction, and the first piston is connected to the end of the main shaft, and the main piston can drive the main shaft to move synchronously in the axial direction, and when the main piston moves to the terminal position of the control chamber, the main shaft can move axially relative to the main piston, so that the two sides of the main piston are alternately connected with the high-pressure oil, and the first air inlet and the first exhaust hole are simultaneously connected with the first working air chamber, and the cross-sectional area of ​​the main piston is larger than the cross-sectional area of ​​the first piston. By respectively providing a P port connected to the hydraulic pump and a T port connected to the oil return tank on the housing, and the P port and the T port are alternately connected with the control chambers on both sides of the main piston, the main piston is driven to move axially back and forth by means of hydraulic pressure, and then the first piston is driven to repeatedly compress air in the first air chamber to perform work.

[0004] With regard to the above-mentioned related technologies, in order to ensure that the force exerted on the main piston is greater than the force exerted on the first piston under the action of the same pressure oil, the cross-sectional area of ​​the first air chamber needs to be designed to be smaller than the cross-sectional area of ​​the control chamber. However, due to the limitation of the cross-sectional area of ​​the control chamber, the air compression efficiency is low. Summary of the invention

[0005] The invention discloses an energy-saving hydraulically driven air compressor, which helps to compress more air under the condition of the same cross-sectional area of ​​a control room, save hydraulic oil, and improve air compression efficiency to a certain extent.

[0006] The present application provides an energy-saving hydraulically driven air compressor, which adopts the following technical solution: The camshaft is an air compressor according to claim 1, wherein the camshaft is an air compressor and the camshaft is actuated to move the camshafts and the camshafts are connected to the camshafts. The camshafts are connected to the camshafts by the camshafts. The camshafts are connected to the camshafts by the camshafts.

[0007] Furthermore, the adjustment assembly includes a first spring arranged in the connecting rod, a rack arranged on the sliding rod, a gear slidably arranged in the connecting rod, and an adjusting member arranged on the connecting rod, the first spring is used to push the sliding rod to slide in a direction away from the connecting rod, the length direction of the rack is parallel to the sliding direction of the sliding rod, the sliding direction of the gear is perpendicular to the length direction of the rack, the gear is used to mesh with the rack, and the adjusting member is used to adjust the gear to slide in a direction close to or away from the rack.

[0008] Furthermore, there are two gears in the connecting rod, and the adjusting member corresponds to the gears one by one. A synchronization plate is provided between the two gears in the connecting rod. The adjusting member includes a second spring arranged in the connecting rod and an abutment block slidably penetrated on the connecting rod. The second spring is used to push the gear to slide in a direction close to the rack. The abutment block is connected to the gear. When the gear is meshed with the rack, the abutment block extends out of the side of the connecting rod close to the rack. The side of the abutment block away from the gear is an arc surface, and the arc surface bulges outward in the direction away from the gear. When the main piston moves to the terminal position of the control chamber, one of the abutment blocks on the connecting rod abuts against the inner wall of the shell to press the abutment block to disengage the gear from the rack.

[0009] Furthermore, an opening is provided on the outer wall of the connecting rod close to the rack, and the opening corresponds to the abutment block one by one. The abutment block is slidably inserted into the corresponding opening, and the opening is covered with an elastic rubber, which seals the opening, and the arc surface of the abutment block abuts against the corresponding elastic rubber.

[0010] Furthermore, the stop ring plug includes a stop plug and an abutment ring, the stop plug is connected to a plurality of sliding rods, the outer diameter of the stop plug is equal to the outer diameter of the compression piston, the inner diameter of the stop plug is smaller than the outer diameter of the main piston, the abutment ring is arranged on a side of the stop plug close to the compression piston, the outer diameter of the abutment ring is smaller than the outer diameter of the main piston, and the abutment ring is used to abut against a side of the compression piston close to the main piston.

[0011] Furthermore, the abutment ring is slidably arranged on a side of the stopper close to the compression piston, the sliding direction of the abutment ring is parallel to the axial direction of the abutment ring, and the stopper is provided with a sliding component for adjusting the sliding of the abutment ring.

[0012] Furthermore, the sliding assembly includes a third spring arranged in the stopper, a connecting rope arranged on the abutment ring, and a pulling member arranged on the synchronization plate, the third spring is used to push the abutment ring to slide in a direction away from the stopper, the elastic force of the third spring is greater than the elastic force of the first spring, the pulling member is used to pull or loosen the connecting rope, and when the third spring is in a natural state, the distance from the side of the abutment ring away from the stopper to the stopper is less than 1 mm.

[0013] Furthermore, the pulling member includes a first magnet arranged on a synchronization plate and a second magnet slidably arranged in a sliding rod, the first magnet is used to adsorb and fix the second magnet, the sliding direction of the second magnet is parallel to the axial direction of the main shaft, the end of the connecting rope away from the abutment ring slides through the stopper and the sliding rod to connect with the second magnet, when the first magnet and the second magnet are adsorbed and fixed, the side of the abutment ring close to the compression piston is flush with the side of the stopper close to the compression piston, and when the gear is meshed with the rack, the first magnet and the second magnet are adsorbed and fixed.

[0014] Furthermore, the sliding rod includes a connecting section and a guiding section, the connecting section is connected to the retaining ring plug, the connecting section seals the inside of the corresponding connecting rod, the guiding section is arranged on the side of the connecting section away from the retaining ring plug, the guiding section is slidably connected in the corresponding connecting rod, and the rack is arranged on the guiding section.

[0015] Furthermore, the cross section of the connecting rod is rectangular.

[0016] The energy-saving hydraulically driven air compressor of the present application has at least the following beneficial effects: When the main piston drives the main shaft to move synchronously, the sliding rod and the connecting rod are relatively fixed by adjusting the assembly, thereby realizing relative fixation between the connecting rod, the sliding rod, the retaining ring plug and the main piston. Since the retaining ring plug is located on the side of the compression piston close to the main piston, the retaining ring plug can bear part of the force of the high-pressure liquid oil for the compression piston during the process of the main piston driving the main shaft to move synchronously. Since the retaining ring plug and the main piston are relatively fixed, the force exerted on the retaining ring plug will not be transferred to the compression piston, so that under the action of the same pressure oil, the force exerted on the compression piston is smaller than the force exerted on the main piston, so that the force exerted on the main piston is greater than the force exerted on the compression piston. When the main piston has not moved to the terminal position of the control chamber, the main shaft will not slide relative to the main piston, thereby ensuring the synchronous advancement of the main piston and the compression piston. When the main piston moves to the terminal position of the control chamber, the compression piston will continue to move under the action of the high-pressure liquid to achieve alternating connection between the two sides of the main piston and the high-pressure oil. At this time, the sliding rod is adjusted by the adjusting component to slide to ensure that the retaining ring plug is in contact with the compression piston. When the alternating connection of the high-pressure liquid oil on both sides of the main piston is completed, the main piston drives the main shaft and the compression piston to move in the opposite direction synchronously again. The sliding rod and the connecting rod are relatively fixed by the adjusting component to achieve the blocking of the high-pressure liquid oil by the retaining ring plug, so that the force acting on the main piston is always greater than the force acting on the compression piston, while the cross-sectional area of ​​the air chamber is expanded, which helps to compress more air when the cross-sectional area of ​​the control chamber is the same as that in the relevant technology, thereby improving the air compression efficiency to a certain extent; while meeting the same compression amount, hydraulic oil is saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments of the present invention or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a cross-sectional view of the overall structure of an embodiment of the present application.

[0019] Figure 2 It is a structural cross-sectional view of the retaining ring plug in the embodiment of the present application.

[0020] Figure 3 yes Figure 2 Enlarged view of part A.

[0021] Figure 4 It is a schematic diagram of the local structure of an embodiment of the present application, mainly used to show the overall structure of the abutment block.

[0022] Explanation of the reference numerals in the accompanying drawings: 1. housing; 2. main piston; 3. main shaft; 4. compression piston; 5. control chamber; 6. air chamber; 7. retaining ring plug; 71. retaining plug; 72. abutment ring; 8. connecting rod; 9. sliding rod; 91. connecting section; 92. guide section; 10. first spring; 11. rack; 12. gear; 13. synchronization plate; 14. second spring; 15. abutment block; 16. opening; 17. elastic rubber; 18. third spring; 19. connecting rope; 20. first magnet; 21. second magnet; 22. sliding groove; 23. telescopic rod; 24. annular groove. DETAILED DESCRIPTION

[0023] The following combination Figure 1-Figure 4 This application is described in further detail.

[0024] The present application embodiment discloses an energy-saving hydraulically driven air compressor. Figure 1 The energy-saving hydraulically driven air compressor includes a housing 1, a main piston 2, a main shaft 3 and a compression piston 4. The interior of the housing 1 is provided with a control chamber 5 and an air chamber 6 which are independent of each other. The main piston 2 is slidably arranged in the control chamber 5, and the compression piston 4 is slidably arranged in the air chamber 6. The main shaft 3 is slidably penetrated on the main piston 2, and the compression piston 4 is fixedly connected to the end of the main shaft 3. Specifically, the main piston 2 can drive the main shaft 3 to move axially synchronously. When the main piston 2 moves to the terminal position of the control chamber 5, the main shaft 3 can move axially relative to the main piston 2, so that the two sides of the main piston 2 are alternately connected with the high-pressure oil. Among them, the specific structure of the main piston 2, the specific structure of the main shaft 3, the oil circuit structure for realizing the alternating connection of the high-pressure oil on both sides of the main piston 2, and the connection structure between the main piston 2 and the main shaft 3 are all the same as those in the related art, and will not be elaborated here.

[0025] Reference Figure 1 A one-way air inlet and exhaust hole are arranged on the side of the air chamber 6 away from the control chamber 5, so that the compression piston 4 can compress the air; the cross-sectional area of ​​the air chamber 6 is larger than the cross-sectional area of ​​the control chamber 5, the cross-sectional area of ​​the compression piston 4 is larger than the cross-sectional area of ​​the main piston 2, a retaining ring plug 7 is slidingly arranged in the air chamber 6, the retaining ring plug 7 is annular and is coaxially arranged with the main shaft 3, the main shaft 3 is located in the retaining ring plug 7, the retaining ring plug 7 is located on the side of the compression piston 4 close to the main piston 2, the retaining ring plug 7 is used to abut against the side of the corresponding compression piston 4 close to the main piston 2, the outer diameter of the retaining ring plug 7 is equal to the outer diameter of the compression piston 4 so as to abut against the inner wall of the air chamber 6, and the inner diameter of the retaining ring plug 7 is smaller than the outer diameter of the main piston 2.

[0026] Reference Figure 1 and Figure 2, multiple connecting rods 8 are fixed on the main piston 2, and the connecting rods 8 extend in the direction close to the compression piston 4. The length direction of the connecting rods 8 is parallel to the axial direction of the main shaft 3. The connecting rods 8 slide through the housing 1 and extend into the air chamber 6. In the embodiment of the present application, the retaining ring plug 7 corresponds to two symmetrically arranged connecting rods 8, and the arrangement direction of the two connecting rods 8 is not parallel to the plane where the oil circuit structure on the housing 1 is located; in other embodiments, the number of connecting rods 8 can be set as needed. The connecting rods 8 are staggered with the oil circuit structure in the housing 1, so as not to affect the flow of high-pressure oil in the oil circuit, ensuring that when the main piston 2 moves to the terminal position of the control chamber 5, the main shaft 3 can move axially relative to the main piston 2, so that the two sides of the main piston 2 are alternately connected with the high-pressure oil.

[0027] Reference Figure 1 and Figure 2 A sliding groove 22 is provided on the side of each connecting rod 8 close to the compression piston 4, and a sliding rod 9 is slidably arranged in the sliding groove 22. The sliding direction of the sliding rod 9 is parallel to the axial direction of the main shaft 3. The ends of the multiple sliding rods 9 away from the main piston 2 are fixedly connected to the retaining ring plug 7, and an adjusting component for adjusting the sliding and fixing of the sliding rod 9 is provided on the connecting rod 8.

[0028] When the main piston 2 drives the main shaft 3 to move synchronously, the sliding rod 9 and the connecting rod 8 are relatively fixed by adjusting the assembly, thereby realizing the relative fixation between the connecting rod 8, the sliding rod 9, the retaining ring plug 7 and the main piston 2. Since the retaining ring plug 7 is located on the side of the compression piston 4 close to the main piston 2, during the synchronous movement of the main piston 2 and the main shaft 3, the retaining ring plug 7 can bear part of the force of the high-pressure liquid oil for the compression piston 4, and the retaining ring plug 7 is relatively fixed to the main piston 2 and will not transfer the force to the compression piston 4, so that under the action of the same pressure oil, the area of ​​the main piston 2 affected by the hydraulic oil is larger than the area of ​​the compression piston 4 affected by the hydraulic oil, and the force exerted on the main piston 2 is greater than the force exerted on the compression piston 4; when the main piston 2 has not moved to the terminal position of the control chamber 5, the main shaft 3 will not slide relative to the main piston 2, thereby ensuring the synchronous advancement of the main piston 2 and the compression piston 4.

[0029] When the main piston 2 moves to the terminal position of the control chamber 5, the compression piston 4 will continue to move under the action of the high-pressure liquid to achieve alternating connection between the two sides of the main piston 2 and the high-pressure oil. At this time, the sliding rod 9 is adjusted by the adjusting component to slide to ensure that the retaining ring plug 7 is in contact with the compression piston 4; when the alternating connection of the high-pressure liquid on both sides of the main piston 2 is completed, the main piston 2 drives the main shaft 3 and the compression piston 4 to move in opposite directions synchronously, and then the sliding rod 9 and the connecting rod 8 are relatively fixed through the adjusting component, thereby ensuring that the retaining ring plug 7 blocks the high-pressure liquid, so that the force applied to the main piston 2 is always greater than the force applied to the compression piston 4 while expanding the cross-sectional area of ​​the air chamber 6, which helps to compress more air when the cross-sectional area of ​​the control chamber 5 is the same as that in the relevant technology, thereby improving the air compression efficiency to a certain extent; compared with the relevant technology, while meeting the same compression amount, the amount of hydraulic oil is saved, achieving the effect of energy saving, and it is convenient to be widely used in industrial and household air conditioners.

[0030] Reference Figure 1 In order to improve the air compression efficiency, two compression pistons 4 are provided, and the air chambers 6 correspond to the compression pistons 4 one by one. The two compression pistons 4 are respectively fixed at the two ends of the main shaft 3. The two air chambers 6 are located on both sides of the control chamber 5. The two ends of the main shaft 3 extend into the two air chambers 6 respectively. The retaining ring plugs 7 correspond to the air chambers 6 one by one. The connecting rods 8 at both ends of the main piston 2 are symmetrically arranged so that each retaining ring plug 7 corresponds to two sliding rods 9; during the movement of the main piston 2, air compression can be performed through the compression pistons 4 at both ends.

[0031] Reference Figure 1 and Figure 2 In order to prevent the high-pressure oil from entering the connecting rod 8, the sliding rod 9 includes a connecting section 91 and a guiding section 92. The connecting section 91 is fixedly connected to the retaining ring plug 7. The cross-sectional area of ​​the connecting section 91 matches the cross-sectional area of ​​the sliding groove 22, so that the connecting section 91 seals the corresponding connecting rod 8. The guiding section 92 is integrally formed on the side of the connecting section 91 away from the retaining ring plug 7. The guiding section 92 is slidably connected in the corresponding sliding groove 22 along the length direction of the connecting rod 8. The cross-sectional area of ​​the guiding section 92 is smaller than the cross-sectional area of ​​the sliding groove 22, and the guiding section 92 is located on the side of the connecting section 91 close to the main shaft 3. Specifically, a guiding rail is provided between the guiding section 92 and the inner wall of the sliding groove 22 to guide the sliding of the guiding section 92. The notch of the sliding groove 22 is closed by the connecting section 91, so that the high-pressure oil is not easy to enter the connecting rod 8.

[0032] Reference Figure 2 and Figure 3In order to facilitate the adjustment of the sliding rod 9 to slide and fix, the adjustment component includes a first spring 10, a rack 11, a gear 12 and an adjustment member. The first spring 10 corresponds to the connecting rod 8 one by one. The first spring 10 is located in the corresponding sliding groove 22. The first spring 10 is located on the side of the guide section 92 away from the connecting section 91. One end of the first spring 10 is fixed to the bottom wall of the corresponding sliding groove 22, and the other end is fixed to the side of the corresponding guide section 92 away from the connecting section 91. The first spring 10 is used to push the guide section 92 and the connecting section 91 to slide in the direction away from the connecting rod 8; the rack 11 is fixed on the guide section 92. The length direction of the rack 11 is parallel to the sliding direction of the sliding rod 9; the gear 12 is slidably arranged in the sliding groove 22, and the sliding direction of the gear 12 is perpendicular to the length direction of the rack 11. In order to facilitate the sliding of the gear 12, a telescopic rod 23 is fixed between the gear 12 and the inner wall of the sliding groove 22 away from the rack 11. The telescopic direction of the telescopic rod 23 is parallel to the sliding direction of the gear 12. The gear 12 cannot rotate. The gear 12 is used to mesh with the rack 11. The adjusting piece is arranged on the connecting rod 8, and the adjusting piece is used to adjust the gear 12 to slide in a direction close to or away from the rack 11.

[0033] Reference Figure 2 and Figure 3 There are two gears 12 in the connecting rod 8, the telescopic rod 23 corresponds to the gears 12 one by one, the adjusting piece corresponds to the gears 12 one by one, the two gears 12 correspond to the two ends of the rack 11, one of the gears 12 in the connecting rod 8 is aligned with the control chamber 5, and the other is aligned with the corresponding air chamber 6; a synchronization plate 13 is fixed between the two gears 12 in the connecting rod 8, so that the two gears 12 slide synchronously toward or away from the rack 11.

[0034] Reference Figure 3 and Figure 4 In order to facilitate the adjustment of the gear 12 to slide in the direction close to or away from the rack 11, the adjustment member includes a second spring 14 and an abutment block 15. The second spring 14 is located in the telescopic rod 23. The second spring 14 corresponds to the telescopic rod 23 one by one. The extension direction of the second spring 14 is parallel to the telescopic direction of the telescopic rod 23. One end of the second spring 14 is fixed to the inner wall of the sliding groove 22, and the other end is fixed to the telescopic end of the telescopic rod 23. The second spring 14 is used to push the gear 12 to slide in the direction close to the rack 11. When the gear 12 is engaged with the rack 11, the second spring 14 is in a compressed state.

[0035] Reference Figure 3 and Figure 4, the abutment block 15 is slidably penetrated on the side of the connecting rod 8 close to the rack 11, and an opening 16 for the abutment block 15 to pass through is opened on the side of the connecting rod 8 close to the rack 11, and the opening 16 corresponds to the abutment block 15 one by one, and the abutment block 15 is door-shaped, and the rack 11 is located in the abutment block 15, and the abutment block 15 corresponds to the gear 12 one by one. Both ends of the abutment block 15 are fixedly connected to the gear 12 through a support rod (not marked in the figure). When the gear 12 is meshed with the rack 11, the side of the abutment block 15 away from the gear 12 extends out of the corresponding opening 16; the side of the abutment block 15 away from the gear 12 is an arc surface, and the arc surface bulges outward in the direction away from the gear 12. When the main piston 2 moves to the terminal position on one side of the control chamber 5, the abutment block 15 on the connecting rod 8 in the air chamber 6 close to one side of the main piston 2, which is away from the air inlet hole, passes through the housing 1 (refer to Figure 1 ) to press the abutment block 15 to disengage the gear 12 from the rack 11, and the abutment block 15 on the connecting rod 8 near the air inlet in the air chamber 6 on the far side of the main piston 2 abuts against the inner wall where the corresponding connecting rod 8 passes through the housing 1 to press the abutment block 15 to disengage the gear 12 from the rack 11. Thus, when the main piston 2 moves to the terminal position at either end of the control chamber 5, one of the abutment blocks 15 on the connecting rod 8 will abut against the inner wall of the housing 1.

[0036] When the main piston 2 gradually moves to the terminal position at one end of the control chamber 5, the arc surface of one of the abutment blocks 15 on each connecting rod 8 gradually slides relative to the inner wall of the corresponding connecting rod 8 passing through the housing 1, so as to press the abutment block 15 to move toward the inside of the connecting rod 8, and continue to compress the second spring 14, so that the abutment block 15 drives the gear 12 away from the rack 11, and the two gears 12 in each connecting rod 8 are disengaged from the rack 11 through the synchronization plate 13. At this time, the gear 12 releases the restriction on the rack 11, and the main piston 2 approaches one end. The sliding rod 9 in the side air chamber 6, under the pushing action of the first spring 10 and the force of the hydraulic oil, causes the retaining ring plug 7 to move synchronously with the compression piston 4 in the direction away from the connecting rod 8, while the sliding rod 9 in the air chamber 6 on the side away from the main piston 2, under the abutment of the corresponding compression piston 4, follows the corresponding compression piston 4 to move synchronously in the direction close to the connecting rod 8. Therefore, when the main shaft 3 and the main piston 2 slide relative to each other, the retaining ring plugs 7 in the two air chambers 6 can move synchronously with the corresponding compression piston 4 to ensure that the retaining ring plugs 7 abut against the compression piston 4.

[0037] When the main piston 2 drives the main shaft 3 and the compression piston 4 to move synchronously, the main piston 2 leaves the terminal position of the control chamber 5, so that the abutment block 15 is disengaged from the inner wall of the housing 1, and then the abutment block 15 and the gear 12 move in the opposite direction under the action of the second spring 14, so that the gear 12 engages with the rack 11, thereby limiting the movement of the rack 11 and the guide section 92, and realizing the relative fixation of the retaining ring plug 7 and the main piston 2, so that during the movement of the main piston 2, the force exerted on the retaining ring plug 7 can act on the main piston 2 without affecting the compression piston 4, so as to ensure that under the action of the same pressure oil, the force exerted on the main piston 2 is always greater than the force exerted on the compression piston 4, so that the main shaft 3 will not slide relative to the main piston 2.

[0038] Reference Figure 2 and Figure 3 Each opening 16 is covered with an elastic rubber 17 , which seals the opening 16 , and the arc surface of the abutment block 15 abuts against the corresponding elastic rubber 17 . The setting of the elastic rubber 17 prevents high-pressure liquid oil from entering the interior of the connecting rod 8 .

[0039] Reference Figure 1 and Figure 3 The cross sections of the connecting rod 8 and the sliding rod 9 are both rectangular, which facilitates the installation of the abutment block 15 and facilitates the relative sliding between the arc surface of the abutment block 15 and the inner wall of the shell 1.

[0040] Reference Figure 2 and Figure 3 Further, the stopper ring plug 7 includes a stopper plug 71 and an abutting ring 72. The stopper plug 71 is fixedly connected to the connecting sections 91 of the two corresponding sliding rods 9. The outer diameter of the stopper plug 71 is equal to the outer diameter of the compression piston 4. The inner diameter of the stopper plug 71 is smaller than the outer diameter of the main piston 2. The side of the stopper plug 71 close to the compression piston 4 is provided with an annular groove 24. The outer diameter of the annular groove 24 is smaller than the outer diameter of the main piston 2. The inner diameter of the annular groove 24 is larger than the inner diameter of the stopper 71. The abutting ring 72 is arranged in the annular groove 24. The abutting ring 72 is used to abut against the side of the compression piston 4 close to the main piston 2. Thereby reducing the contact area between the stopper ring plug 7 and the compression piston 4 to avoid causing force on the compression piston 4.

[0041] Reference Figure 2 and Figure 3 In order to facilitate the existence of a certain gap between the retaining ring plug 7 and the compression piston 4 during the movement of the main piston 2, the abutment ring 72 is slidably arranged in the annular groove 24, and the abutment ring 72 seals the notch of the annular groove 24. The sliding direction of the abutment ring 72 is parallel to the axial direction of the abutment ring 72. A sliding component for adjusting the sliding of the abutment ring 72 is provided on the retaining plug 71.

[0042] Reference Figure 2 and Figure 3In order to facilitate the adjustment of the sliding of the abutment ring 72, the sliding assembly includes a third spring 18, a connecting rope 19 and a pulling member. The third spring 18 is located in the annular groove 24. The third spring 18 corresponds to the sliding rod 9 one by one. One end of the third spring 18 is fixed to the bottom wall of the annular groove 24, and the other end is fixed to the abutment ring 72 away from the corresponding compression piston 4 (refer to Figure 1 ), the third spring 18 is used to push the abutment ring 72 to slide in the direction away from the stopper 71, and the elastic force of the third spring 18 is greater than the elastic force of the first spring 10; the connecting rope 19 corresponds to the connecting rod 8 one by one, and the end of the connecting rope 19 is fixed to the side of the abutment ring 72 away from the corresponding compression piston 4, and the pulling member is arranged on the synchronization plate 13 in the sliding groove 22, and the pulling member is used to pull or loosen the connecting rope 19. When the third spring 18 is in a natural state, the distance from the side of the abutment ring 72 away from the stopper 71 to the side of the stopper 71 close to the corresponding compression piston 4 is less than 1 mm.

[0043] Reference Figure 2 and Figure 3 , to facilitate pulling or loosening the connecting rope 19, the connecting rope 19 corresponds to the sliding rod 9 one by one, and the pulling member includes a first magnet 20 and a second magnet 21, the first magnet 20 is fixed on the synchronous plate 13 in the corresponding sliding groove 22, the first magnet 20 is located on the side of the synchronous plate 13 close to the connecting section 91, and the second magnet 21 is slidably arranged on the side of the corresponding connecting section 91 close to the bottom wall of the sliding groove 22, and the sliding direction of the second magnet 21 is parallel to the axial direction of the main shaft 3, the first magnet 20 is used to adsorb and fix the second magnet 21, and the adsorption force between the first magnet 20 and the second magnet 21 is greater than the elastic force of the two third springs 18, and the end of the connecting rope 19 away from the abutment ring 72 slides through the stopper 71 and the sliding rod 9 to be connected with the second magnet 21, when the first magnet 20 and the second magnet 21 are adsorbed and fixed, the side of the abutment ring 72 close to the compression piston 4 is flush with the side of the stopper 71 close to the compression piston 4, and when the gear 12 is engaged with the rack 11, the first magnet 20 and the second magnet 21 are adsorbed and fixed.

[0044] When the main piston 2 moves to the terminal position on one side of the control chamber 5, the gear 12 is disengaged from the rack 11, and the first magnet 20 is disengaged from the second magnet 21 through the synchronization plate 13. As the tension of the second magnet 21 on the connecting rope 19 decreases, the compressed third spring 18 pushes the abutment ring 72 to move away from the corresponding compression piston 4, so that the abutment ring 72 abuts against the corresponding compression piston 4. Since the elastic force of the third spring 18 is greater than the elastic force of the first spring 10, the abutment ring 72 is in a state of extending out of the annular groove 24 and abutting against the compression piston 4. When the compression piston 4 moves to the terminal position of the air chamber 6, the two sides of the main piston 2 are in contact with the high pressure After the oil forms alternating connection, the main piston 2 moves in the opposite direction, then the gear 12 meshes with the rack 11, and drives the first magnet 20 to align with the second magnet 21 through the synchronous plate 13, and then the first magnet 20 absorbs and fixes the second magnet 21, so that the connecting rope 19 pulls the abutment ring 72 into the annular groove 24, so that there is a gap of less than 1 mm between the entire baffle ring plug 7 and the corresponding compression piston 4, so that the baffle ring plug 7 can not only block a part of the force of the high-pressure liquid oil for the corresponding compression piston 4, but also have no effect on the compression piston 4, thereby ensuring that under the action of the same pressure oil, the force acting on the main piston 2 is greater than the force acting on the compression piston 4.

[0045] The implementation principle of the embodiment of the present application is: when the main piston 2 drives the main shaft 3 to move synchronously, the gear 12 is meshed with the rack 11, so that the sliding rod 9 and the connecting rod 8 are relatively fixed, and the first magnet 20 is adsorbed and fixed with the corresponding second magnet 21, so that the abutment ring 72 and the baffle 71 are flush with the side close to the compression piston 4. At this time, there is a gap of less than 1 mm between the entire baffle ring plug 7 and the corresponding compression piston 4. During the sliding process of the main piston 2, since the baffle ring plug 7 is located on the side of the compression piston 4 close to the main piston 2, the compression piston 4 can withstand part of the force of the high-pressure liquid oil, so that under the action of the same pressure oil, the force applied to the main piston 2 is greater than the force applied to the compression piston 4, so that when the main piston 2 has not moved to the terminal position of the control chamber 5, the main shaft 3 will not slide relative to the main piston 2, thereby ensuring the synchronous advancement of the main piston 2 and the compression piston 4.

[0046] When the main piston 2 moves to the terminal position on one side of the control chamber 5, one of the abutment blocks 15 on each connecting rod 8 presses the gear 12 under the abutment of the inner wall of the shell 1, so that the gear 12 is disengaged from the rack 11, and the synchronous plate 13 drives the first magnet 20 to disengage from the second magnet 21. At this time, the stopper 71 in the air chamber 6 on the side close to the main piston 2 will slide synchronously with the corresponding compression piston 4 in the direction away from the main piston 2 under the thrust of the first spring 10 and the action of the high-pressure liquid oil, and the corresponding abutment ring 72 slides under the action of the third spring 18, and the abutment ring 72 abuts against the corresponding compression piston 4. The stopper 71 and the abutment ring 72 in the air chamber 6 on the side away from the main piston 2 also move synchronously with the corresponding compression piston 4 under the action of the corresponding compression piston 4 moving in the direction close to the main piston 2, and then the compression piston 4 moves to the terminal position of the corresponding air chamber 6, so that the two sides of the main piston 2 are alternately connected with the high-pressure oil.

[0047] After the high-pressure oil on both sides of the main piston 2 is alternately connected, the main piston 2 drives the main shaft 3 and the compression piston 4 to move in the opposite direction, so that the abutment block 15 on the connecting rod 8 is separated from the inner wall of the shell 1, and the abutment block 15 and the gear 12 are reset under the action of the second spring 14, and the gear 12 and the rack 11 are meshed again, so that the sliding rod 9 and the connecting rod 8 are relatively fixed, thereby realizing the relative fixation between the stopper 71 and the main piston 2, and the first magnet 20 is adsorbed and fixed with the corresponding second magnet 21, so that the abutment ring 72 and the stopper 71 are flush with the side close to the compression piston 4. At this time, the entire stopper ring plug 7 is aligned with the corresponding compression piston 4. There is a gap of less than 1 mm between the plug 4 to ensure that the retaining ring plug 7 blocks the high-pressure liquid oil, and the hydraulic oil between the retaining ring plug 7 and the compression piston 4 will not generate a large force on the compression piston 4. In this way, under the action of the same pressure oil, the force exerted on the main piston 2 is greater than the force exerted on the compression piston 4. At the same time, the cross-sectional area of ​​the air chamber 6 is expanded, which helps to compress more air when the cross-sectional area of ​​the control chamber 5 is the same as that in the related technology, thereby improving the air compression efficiency to a certain extent; and when the same compression amount is met, the amount of hydraulic oil is saved, achieving an energy-saving effect.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An energy-saving hydraulically driven air compressor, comprising a housing (1), a main piston (2), a main shaft (3) and a compression piston (4), wherein the housing (1) is provided with a control chamber (5) and an air chamber (6) which are independent of each other, wherein the main piston (2) is slidably arranged in the control chamber (5), wherein the compression piston (4) is slidably arranged in the air chamber (6), wherein the main shaft (3) is slidably arranged on the main piston (2), and wherein the compression piston (4) is connected to the end of the main shaft (3 ... and wherein the main shaft (3) is slidably arranged on the main piston (2), and wherein the compression piston (4) is connected to the end of the main shaft (3), and wherein the main shaft (3) is slidably arranged on the main piston (2), and wherein the compression piston (4) is connected to the end of the main shaft (3), and wherein the main shaft (3) is slidably arranged on the main piston (2), and wherein the compression piston (4) is The cross-sectional area of ​​the air chamber (6) is larger than the cross-sectional area of ​​the control chamber (5). A retaining ring plug (7) is slidably arranged in the air chamber (6). The retaining ring plug (7) is used to abut against a side of the compression piston (4) close to the main piston (2). The outer diameter of the retaining ring plug (7) is equal to the outer diameter of the compression piston (4). The inner diameter of the retaining ring plug (7) is smaller than the outer diameter of the main piston (2). The main piston (2) is provided with a plurality of connecting rods (8). The connecting rods (8) slide through the housing (1) and extend into the air chamber (6). A sliding rod (9) is slidably arranged in the connecting rod (8). The sliding direction of the sliding rod (9) is parallel to the axial direction of the main shaft (3). The plurality of sliding rods (9) are connected to the retaining ring plug (7). An adjusting component for adjusting the sliding and fixing of the sliding rod (9) is arranged on the connecting rod (8).

2. The energy-saving hydraulically driven air compressor according to claim 1, characterized in that: The adjustment component comprises a first spring (10) arranged in the connecting rod (8), a rack (11) arranged on the sliding rod (9), a gear (12) slidably arranged in the connecting rod (8), and an adjustment member arranged on the connecting rod (8); the first spring (10) is used to push the sliding rod (9) to slide in a direction away from the connecting rod (8); the length direction of the rack (11) is parallel to the sliding direction of the sliding rod (9); the sliding direction of the gear (12) is perpendicular to the length direction of the rack (11); the gear (12) is used to mesh with the rack (11); and the adjustment member is used to adjust the gear (12) to slide in a direction close to or away from the rack (11).

3. The energy-saving hydraulically driven air compressor according to claim 2, characterized in that: There are two gears (12) in the connecting rod (8), the adjusting member corresponds to the gears (12) one by one, a synchronizing plate (13) is provided between the two gears (12) in the connecting rod (8), the adjusting member comprises a second spring (14) provided in the connecting rod (8) and an abutment block (15) slidably penetrated on the connecting rod (8), the second spring (14) is used to push the gear (12) to slide in a direction close to the rack (11), the abutment block (15) is connected to the gear (12), When the gear (12) is meshed with the rack (11), the abutment block (15) extends out of the side of the connecting rod (8) close to the rack (11); the side of the abutment block (15) away from the gear (12) is an arc surface, and the arc surface is convex in the direction away from the gear (12); when the main piston (2) moves to the terminal position of the control chamber (5), one of the abutment blocks (15) on the connecting rod (8) abuts against the inner wall of the housing (1) to press the abutment block (15) to disengage the gear (12) from the rack (11).

4. The energy-saving hydraulically driven air compressor according to claim 3, characterized in that: An opening (16) is provided on the outer wall of the connecting rod (8) near the rack (11), the opening (16) corresponds to the abutment block (15) one by one, the abutment block (15) is slidably inserted into the corresponding opening (16), the opening (16) is covered with an elastic rubber (17), the elastic rubber (17) seals the opening (16), and the arc surface of the abutment block (15) abuts against the corresponding elastic rubber (17).

5. The energy-saving hydraulically driven air compressor according to claim 3, characterized in that: The retaining ring plug (7) comprises a retaining plug (71) and an abutting ring (72). The retaining plug (71) is connected to a plurality of sliding rods (9). The outer diameter of the retaining plug (71) is equal to the outer diameter of the compression piston (4). The inner diameter of the retaining plug (71) is smaller than the outer diameter of the main piston (2). The abutting ring (72) is arranged on a side of the retaining plug (71) close to the compression piston (4). The outer diameter of the abutting ring (72) is smaller than the outer diameter of the main piston (2). The abutting ring (72) is used to abut against a side of the compression piston (4) close to the main piston (2).

6. The energy-saving hydraulically driven air compressor according to claim 5, characterized in that: The abutment ring (72) is slidably arranged on a side of the stopper (71) close to the compression piston (4); the sliding direction of the abutment ring (72) is parallel to the axial direction of the abutment ring (72); and a sliding assembly for adjusting the sliding of the abutment ring (72) is arranged on the stopper (71).

7. The energy-saving hydraulically driven air compressor according to claim 6, characterized in that: The sliding assembly comprises a third spring (18) arranged in the stopper (71), a connecting rope (19) arranged on the abutment ring (72) and a pulling member arranged on the synchronization plate (13); the third spring (18) is used to push the abutment ring (72) to slide in a direction away from the stopper (71); the elastic force of the third spring (18) is greater than the elastic force of the first spring (10); the pulling member is used to pull or loosen the connecting rope (19); when the third spring (18) is in a natural state, the distance from the side of the abutment ring (72) away from the stopper (71) to the stopper (71) is less than 1 mm.

8. The energy-saving hydraulically driven air compressor according to claim 7, characterized in that: The pulling member comprises a first magnet (20) arranged on the synchronous plate (13) and a second magnet (21) slidably arranged in the sliding rod (9), the first magnet (20) is used to adsorb and fix the second magnet (21), the sliding direction of the second magnet (21) is parallel to the axial direction of the main shaft (3), the end of the connecting rope (19) away from the abutment ring (72) slides through the stopper (71) and the sliding rod (9) to be connected with the second magnet (21), when the first magnet (20) and the second magnet (21) are adsorbed and fixed, the side of the abutment ring (72) close to the compression piston (4) is flush with the side of the stopper (71) close to the compression piston (4), and when the gear (12) is meshed with the rack (11), the first magnet (20) and the second magnet (21) are adsorbed and fixed.

9. The energy-saving hydraulically driven air compressor according to claim 2, characterized in that: The sliding rod (9) includes a connecting section (91) and a guiding section (92), wherein the connecting section (91) is connected to the retaining ring plug (7), and the connecting section (91) seals the interior of the corresponding connecting rod (8). The guiding section (92) is arranged on a side of the connecting section (91) away from the retaining ring plug (7), and the guiding section (92) is slidably connected in the corresponding connecting rod (8), and the rack (11) is arranged on the guiding section (92).

10. An energy-saving hydraulically driven air compressor according to any one of claims 1 to 9, characterized in that: The cross section of the connecting rod (8) is rectangular.

Images