Explosion-proof electric injection pump

Abstract

The invention relates to an anti-explosion electric injection pump, and belongs to the technical field of electric injection pumps, the anti-explosion electric injection pump comprises a movable base, an anti-explosion electric control box is arranged on the outer wall of the movable base, a hydraulic pump is arranged on one side of the anti-explosion electric control box, an anti-explosion motor is arranged on one side of the hydraulic pump, and an oil tank body is arranged on one side of the anti-explosion motor; a grease injection gun body connected with the hydraulic pump through a gas conveying pipe is arranged on one side of the oil tank body, an end cover tightening detection rod is arranged on the outer wall of the grease injection gun body, an oil outlet pipe is arranged at the top of the grease injection gun body, and a pressure gauge is arranged on the outer wall of the oil outlet pipe. A double-piston pressurization structure in the grease injection gun body is arranged, a piston assembly in the grease injection gun body is improved, the double-piston series connection design is adopted, high-pressure oil output by the hydraulic pump firstly pushes the first piston, then a linkage structure drives the second piston to conduct secondary pressurization, the grease injection pressure is remarkably improved, and the high-pressure grease injection working condition requirement is met; and the double pistons work cooperatively, so that the grease injection flow is more stable.

Description

Technical Field

[0001] The present invention relates to the technical field of electric injection pumps, in particular to an explosion-proof electric injection pump. Background Art

[0002] High-voltage explosion-proof motors are specialized motors designed for use in flammable and explosive environments. They produce no sparks during operation, effectively preventing explosion risks. These motors are primarily used in coal mining, petrochemicals, the chemical industry, textiles, metallurgy, and city gas, driving pumps, fans, compressors, and other equipment. They are suitable for applications such as oil extraction processes and fuel filling stations. These motors are categorized by their operating principle into explosion-proof asynchronous, synchronous, and DC motors, and by their intended use into mining and industrial applications. Their explosion-proof principles include flameproof, increased safety, and positive pressure designs. They utilize flameproof enclosures or increased safety structures to block internal arcing and heat transfer. Select models feature IP68 protection and Class F insulation standards. They cover power ranges from 0.12 to 400kW and accept voltages of 6,000V and 10,000V. Core design features include high-strength corrosion-resistant materials, specialized heat dissipation technology, and variable frequency speed regulation. Some models achieve the WE4 ultra-high efficiency rating, meeting the customized needs of petrochemical, coal mining, and other environments.

[0003] In the prior art, there is an explosion-proof electric hydraulic pump with a publication number of CN205172862U, which includes an explosion-proof motor, a pump driven by the explosion-proof motor, and a pressure limiting mechanism connected to the pump. The explosion-proof electric hydraulic pump also includes an explosion-proof box, in which a circuit consisting of wiring terminals, contactors, fuses, relays, and wires is provided, and a cable electrically connected to the explosion-proof motor is led out from the circuit in the explosion-proof box. This invention overcomes the disadvantage of existing electric hydraulic pumps that they are prone to explosions or fires when used in an environment containing flammable and explosive gases, and provides an explosion-proof electric hydraulic pump.

[0004] In the prior art, an explosion-proof chemical pump with announcement number CN205876635U includes a pump body, wherein flange end covers are respectively provided at the upper and lower ends of the pump body, a tubular water inlet is provided at the center of the end face of the flange end cover, a plurality of nuts are provided on the flange end cover along the circumference of the tubular water inlet, and a pump body outlet is provided at the lower part of one side of the pump body, and the pump body outlet is connected to the explosion-proof junction box through an explosion-proof joint; a motor housing is provided inside the pump body, a motor is provided inside the motor housing, and an explosion-proof joint outlet is provided on the motor housing that matches the pump body outlet, and the lead wire of the motor is led out through the explosion-proof joint outlet and installed on the explosion-proof junction box. The beneficial effects of this invention are as follows: through the integrated design of the motor and the pump body, the motor lead wire is directly led out from the explosion-proof joint outlet and installed on the explosion-proof junction box, and the pump body outlet is connected to the explosion-proof junction box through the explosion-proof joint, which is easy to operate, reliable and safe, and by designing the flange structure of the pump body end cover, the consumption of flange is saved, and the process is simple, reliable and safe.

[0005] However, although the existing explosion-proof electric injection pump can better perform explosion-proof treatment on the electric injection pump when in use, when the grease gun body on the electric injection pump is used, a single piston block is often used to telescope in the grease gun body, which has a poor secondary pressurization effect in the grease gun body and does not meet the requirements of high-pressure grease injection working conditions. The dual pistons do not work well together, which reduces the stability of the grease flow rate. Moreover, after the grease gun body is used, the oil outlet is often exposed to the outside, and the shielding and sealing effect of the oil outlet after use is not high, which reduces the anti-drip effect of the oil outlet of the grease gun body, pollutes the working environment and causes material waste. Moreover, when the electric injection pump is used, the various components of the injection pump are often exposed to the outside, and the sealing, noise reduction and anti-static effects of the various components are not high, which affects the stability of the use of the various components of the main pump and does not meet people's use needs. For this reason, we propose an explosion-proof electric injection pump. Summary of the Invention

[0006] In order to solve the problems mentioned in the above background, the present invention provides an explosion-proof electric injection pump to solve the problem raised in the above background technology that a single piston block is often used for telescopic movement in the grease gun body, which has poor secondary pressurization effect in the grease gun body and does not meet the requirements of high-pressure grease injection working conditions. After the grease gun body is used, the oil outlet is often exposed to the outside, and the shielding and sealing effect of the oil outlet after use is not high, which reduces the anti-drip effect of the oil outlet of the grease gun body, often exposes various components of the injection pump to the outside, and the sealing, noise reduction and anti-static effects of various components are not high.

[0007] In order to achieve the above technical objectives, the technical solutions adopted by the present invention are as follows:

[0008] An explosion-proof electric injection pump comprises a mobile base, an explosion-proof electric control box is provided on the outer wall of the mobile base, a hydraulic pump is provided on one side of the explosion-proof electric control box, an explosion-proof motor is provided on one side of the hydraulic pump, an oil tank body is provided on one side of the explosion-proof motor, a grease injection gun body connected to the hydraulic pump via an air pipe is provided on one side of the oil tank body, an end cap tightening detection rod is provided on the outer wall of the grease injection gun body, an oil outlet pipe is provided on the top of the grease injection gun body, a pressure gauge is provided on the outer wall of the oil outlet pipe, and a telescopic pull rod is slidably connected to the outer wall of the mobile base;

[0009] The inner wall of the grease injection gun body is slidably connected to a first piston block, the outer wall of the first piston block is slidably connected to a sliding block, the outer wall of the sliding block is rotatably connected to a first rotating rod, the inner wall of the grease injection gun body is slidably connected to a second piston block rotatably connected to one end of the first rotating rod, the outer wall of the first piston block is rotatably connected to the second rotating rod, and one end of the second rotating rod is rotatably connected to a connecting block slidably connected to the bottom of the second piston block;

[0010] The outer wall of the grease injection gun body is provided with a connecting pipe, one end of the connecting pipe is fixedly connected to an air cylinder, and the inner wall of the air cylinder is slidably connected to an extrusion rod. By arranging a double-piston boosting structure in the grease injection gun body: the piston assembly inside the grease injection gun body is improved, and a double-piston series design is adopted. The high-pressure oil output by the hydraulic pump first pushes the first piston, and then drives the second piston for secondary boosting through the linkage structure, which can significantly increase the grease injection pressure and meet the requirements of high-pressure grease injection working conditions. The coordinated work of the double pistons can make the grease injection flow more stable.

[0011] Preferably, the connecting pipe and the grease gun body are arranged to be interconnected, the outer wall of the oil tank body is provided with an oil replenishing pipe through a connecting pump, one end of the oil replenishing pipe is fixedly connected to the oil replenishing tank, a liquid level sensor is installed inside the oil tank body, and a flow control valve is provided on the outer wall of the oil replenishing tank, through the intelligent oil replenishing structure of the oil tank: a liquid level sensor is installed in the oil tank, an automatic oil replenishing device is connected, the oil inlet end of the oil replenishing device is connected to an external oil source, and a flow control valve is provided, when the liquid level sensor detects that the oil level in the oil tank is lower than the set value, the oil replenishment is automatically started, and it is automatically closed when the oil level reaches the set upper limit, thereby realizing automatic and accurate replenishment of the hydraulic oil, avoiding the impact of untimely manual oil replenishment on equipment operation.

[0012] Preferably, the inner wall of the air cylinder is slidably connected to a connecting block, the outer wall of the connecting block is fixedly connected to a second spring fixedly connected to the outer wall of the pull rod, and the outer wall of the sliding block is fixedly connected to the first spring.

[0013] Preferably, a first sliding groove is provided at the connection between the outer wall of the first piston block and the sliding block, a second sliding groove is provided at the connection between the outer wall of the second piston block and the connecting block, and the outer wall contour of the connection between the first rotating rod and the second rotating rod is X-shaped.

[0014] Preferably, the extrusion rod is slidably connected to the outer wall of the grease injection gun, and the outer walls of the extrusion rod and the sliding block are both provided with sensing modules. The sliding block is arranged on the movement trajectory of the extrusion rod, and the rising distance of the first piston block is adapted to the horizontal telescopic distance of the extrusion rod.

[0015] The outer wall of the sliding rod is fixedly connected to the first protective plate, and the outer wall of the fixing block is slidably connected to the outer wall of the fixing block, and the outer wall of the sliding rod is fixedly connected to the first protective plate, and the outer wall of the fixing block is slidably connected to the second protective plate located on one side of the first protective plate, and the top of the oil outlet pipe is provided with an oil outlet, and the outer wall of the second protective plate is fixedly connected to the plug block which is plugged into the outer wall of the first protective plate. A slot is provided at the connection part of the outer wall of the first protective plate and the plug block. By arranging a grease injection gun body anti-drip structure: an elastic sealing component is added at the oil outlet of the grease injection gun body, which component is driven to open by the electric push rod under the action of grease injection pressure. After grease injection is completed, the oil outlet is automatically closed by relying on the retraction of the electric push rod, and it is tightly fitted into the oil outlet, effectively preventing liquid dripping after grease injection, avoiding pollution of the working environment and causing waste of materials.

[0016] Preferably, two groups of pull rods are provided, and the position distribution of the two groups of pull rods is symmetrical about the central axis of the lifting block. The outer wall contour of the connection part between the first protective plate and the second protective plate is larger than the outer wall contour of the oil outlet.

[0017] Preferably, a servo motor is provided on the outer wall of the movable base, a worm is fixedly connected to the output end of the servo motor, a worm is meshed with a worm wheel on the outer wall of the worm, and the rotation center of the worm wheel is fixedly connected to an explosion-proof box through a rotating shaft. Through the setting of the explosion-proof box, when the electric injection pump is driven by the movable seat to adjust the use position, in order to improve the sealing and protection effect of each component of the electric injection pump on the base and reduce the risk of static electricity when exposed to the outside, and through the setting of the cooling chamber and the vacuum chamber, each component is efficiently cooled and noise reduced, thereby improving the stability of the explosion-proof electric injection pump during long-term operation.

[0018] Preferably, the outer wall of the worm is provided with two groups of spirals, and the two groups of spirals are arranged in opposite directions. The explosion-proof box and the worm gear are both provided with two groups, and the position distribution of the two groups of explosion-proof boxes and worm gears are symmetrical about the central axis of the movable base.

[0019] Preferably, the outer wall profile of the explosion-proof box is U-shaped, a cooling cavity is provided inside the explosion-proof box, a vacuum cavity is provided inside the explosion-proof box on one side of the cooling cavity, a corresponding transparent observation port and a connection interface are provided on the outer wall of the explosion-proof box, and the cooling cavity is used to place fluorinated liquid.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention sets a double-piston boosting structure in the grease injection gun body: the piston assembly inside the grease injection gun body is improved, and a double-piston series design is adopted. The high-pressure oil output by the hydraulic pump first pushes the first piston, and then drives the second piston for secondary boosting through the linkage structure, which can significantly increase the grease injection pressure and meet the requirements of high-pressure grease injection working conditions. The coordinated work of the double pistons can make the grease injection flow more stable.

[0022] 2. The present invention provides a drip-proof structure for the grease injection gun body: an elastic sealing component is added at the oil outlet of the grease injection gun body, and the component is driven to open by an electric push rod under the action of the grease injection pressure. After the grease injection is completed, the oil outlet is automatically closed by the retraction of the electric push rod, and the oil outlet is tightly fitted, which effectively prevents liquid dripping after the grease injection is completed, avoids polluting the working environment and causing material waste.

[0023] 3. The present invention adopts an intelligent oil replenishing structure of the oil tank: a liquid level sensor is installed in the oil tank, connected to an automatic oil replenishing device, the oil inlet end of the oil replenishing device is connected to an external oil source, and a flow control valve is provided. When the liquid level sensor detects that the oil level in the oil tank is lower than the set value, the oil replenishment is automatically started, and it is automatically closed when the oil level reaches the set upper limit, thereby realizing automatic and accurate replenishment of hydraulic oil, avoiding the impact of manual oil replenishment on equipment operation.

[0024] 4. The present invention adopts the setting of an explosion-proof box. When the position of the electric injection pump is adjusted by the movable seat, the sealing and protection effect of each component of the electric injection pump on the base is improved, and the risk of static electricity when exposed to the outside is reduced. In addition, the setting of the cooling chamber and the vacuum chamber can effectively cool and reduce the noise of each component, thereby improving the stability of the explosion-proof electric injection pump during long-term operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the overall side structure of the present invention;

[0027] Figure 3 This is a schematic structural diagram of the explosion-proof box of the present invention in an open state;

[0028] Figure 4 This is a schematic diagram of the position distribution structure of the explosion-proof motor and the fuel tank body of the present invention;

[0029] Figure 5 Schematic diagram of the connection structure between the worm and the worm wheel of the present invention;

[0030] Figure 6 This is a schematic diagram of the oil replenishment pipe position distribution structure of the present invention;

[0031] Figure 7 This is a schematic diagram of the connection structure between the gas cylinder and the connecting pipe of the present invention;

[0032] Figure 8 This is a schematic structural diagram of the first piston block of the present invention in an ascending state;

[0033] Figure 9 Schematic diagram of the connection structure between the first rotating rod and the second rotating rod of the present invention;

[0034] Figure 10 Schematic diagram of the position distribution structure of the electric push rod of the present invention;

[0035] Figure 11 For the present invention Figure 4 A in the figure shows the enlarged structural diagram;

[0036] Figure 12 For the present invention Figure 9 A schematic diagram of the structure at point B in FIG.

[0037] Figure 13 For the present invention Figure 10 The enlarged structural diagram at C in FIG.

[0038] Figure 14 For the present invention Figure 7 The enlarged structural diagram at D in FIG.

[0039] Figure 15 It is a schematic diagram of the overall front view structure of the present invention;

[0040] Figure 16 It is a schematic diagram of the overall right side structure of the present invention;

[0041] Figure 17 It is a schematic diagram of the overall rear view structure of the present invention;

[0042] Figure 18 It is a schematic diagram of the overall top view of the structure of the present invention.

[0043] The reference numerals in the accompanying drawings are:

[0044] 1. Mobile base; 2. Explosion-proof electric control box; 3. Hydraulic pump; 4. Explosion-proof motor; 5. Fuel tank body; 6. Grease gun body; 7. End cap tightening detection rod; 8. Oil outlet pipe; 9. Pressure gauge; 10. Telescopic pull rod; 11. First piston block; 12. Sliding block; 13. First rotating rod; 14. Second piston block; 15. Second rotating rod; 16. Connecting block; 17. First spring; 18. Connecting pipe; 19. Air cylinder; 20. Connecting block; 21. Second spring; 22. Extrusion rod; 23. Electric push rod; 24. Lifting block; 25. Pull rod; 26. Sliding rod; 27. First protective plate; 28. Fixed block; 29. ​​Oil outlet; 30. Second protective plate; 31. Insert block; 32. Slot; 33. Oil supply pipe; 34. Oil supply tank; 35. Servo motor; 36. Worm; 37. Worm gear; 38. Explosion-proof box; 39. Cooling chamber; 40. Vacuum chamber. DETAILED DESCRIPTION

[0045] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0046] Example 1:

[0047] See also Figures 1 to 18 This embodiment provides an explosion-proof electric injection pump, comprising a mobile base 1, an explosion-proof electric control box 2 is provided on the outer wall of the mobile base 1, a hydraulic pump 3 is provided on one side of the explosion-proof electric control box 2, an explosion-proof motor 4 is provided on one side of the hydraulic pump 3, an oil tank body 5 is provided on one side of the explosion-proof motor 4, a grease injection gun body 6 connected to the hydraulic pump 3 via an air pipe is provided on one side of the oil tank body 5, an end cap tightening detection rod 7 is provided on the outer wall of the grease injection gun body 6, an oil outlet pipe 8 is provided on the top of the grease injection gun body 6, a pressure gauge 9 is provided on the outer wall of the oil outlet pipe 8, and a telescopic pull rod 10 is slidably connected to the outer wall of the mobile base 1;

[0048] The inner wall of the grease gun body 6 is slidably connected to a first piston block 11, the outer wall of the first piston block 11 is slidably connected to a sliding block 12, the outer wall of the sliding block 12 is rotatably connected to a first rotating rod 13, the inner wall of the grease gun body 6 is slidably connected to a second piston block 14 rotatably connected to one end of the first rotating rod 13, the outer wall of the first piston block 11 is rotatably connected to a second rotating rod 15, one end of the second rotating rod 15 is rotatably connected to a connecting block 16 slidably connected to the bottom of the second piston block 14;

[0049] The outer wall of the grease injection gun body 6 is provided with a connecting tube 18 , one end of which is fixedly connected to an air cylinder 19 , and the inner wall of the air cylinder 19 is slidably connected to an extrusion rod 22 .

[0050] like Figure 6-Figure 8As shown, the connecting pipe 18 and the grease injection gun body 6 are interconnected, and the outer wall of the oil tank body 5 is provided with an oil replenishing pipe 33 through the connecting pump. One end of the oil replenishing pipe 33 is fixedly connected to the oil replenishing tank 34. A liquid level sensor is installed inside the oil tank body 5, and a flow control valve is provided on the outer wall of the oil replenishing tank 34. It is beneficial to achieve the setting of mutual communication between the connecting pipe 18 and the grease injection gun body 6, so as to achieve the synchronous delivery of the gas generated by the hydraulic pump 3 to the air cylinder 19, and the synchronous extrusion movement of the extrusion rod 22, which is beneficial to the setting of the oil replenishing pipe 33 to achieve the effect of improving the automatic replenishment of the oil in the oil tank body 5.

[0051] like Figures 8-12 As shown, the inner wall of the air cylinder 19 is slidably connected to the connecting block 20, the outer wall of the connecting block 20 is fixedly connected to the second spring 21 fixedly connected to the outer wall of the pull rod 25, and the outer wall of the sliding block 12 is fixedly connected to the first spring 17, which is beneficial to achieve the effect of conveniently resetting the sliding block 12 and the second piston block 14 after movement through the setting of the second spring 21 and the first spring 17.

[0052] like Figure 14 As shown, a first sliding groove is provided at the connection between the outer wall of the first piston block 11 and the sliding block 12, a second sliding groove is provided at the connection between the outer wall of the second piston block 14 and the connecting block 16, and the outer wall profile of the connection between the first rotating rod 13 and the second rotating rod 15 is X-shaped, which is conducive to achieving the effect of strengthening the use of the piston in the grease gun body 6 through the outer wall profile of the connection between the first rotating rod 13 and the second rotating rod 15 being X-shaped.

[0053] like Figure 7 and Figure 8 As shown, the extrusion rod 22 is slidably connected to the outer wall of the grease gun body 6, and the outer walls of the extrusion rod 22 and the sliding block 12 are both provided with sensing modules. The sliding block 12 is set on the movement trajectory of the extrusion rod 22, and the rising distance of the first piston block 11 is adapted to the horizontal telescopic distance of the extrusion rod 22. It is beneficial to achieve the effect of secondary reinforcement of the rise of the second piston block 14 after the first piston block 11 rises to the corresponding height through the adaptation of the rising distance of the first piston block 11 to the horizontal telescopic distance of the extrusion rod 22.

[0054] like Figure 13As shown, the outer wall of the oil outlet pipe 8 is provided with an electric push rod 23, one end of the electric push rod 23 is fixedly connected to a lifting block 24 which is slidably connected to the outer wall of the oil outlet pipe 8, the outer wall of the lifting block 24 is rotatably connected to a pulling rod 25, the outer wall of the oil outlet pipe 8 is fixedly connected to a fixed block 28, the outer wall of the pulling rod 25 is rotatably connected to a sliding rod 26 which is slidably connected to the outer wall of the fixed block 28, the outer wall of the sliding rod 26 is fixedly connected to a first protective plate 27, the outer wall of the fixed block 28 is slidably connected to a second protective plate 30 located on one side of the first protective plate 27, an oil outlet 29 is opened at the top of the oil outlet pipe 8, the outer wall of the second protective plate 30 is fixedly connected to the first protective plate The outer wall of the guard plate 27 is connected to the plug block 31, and a slot 32 is provided at the connection part between the outer wall of the first guard plate 27 and the plug block 31. When the oil outlet 29 needs to be sealed and protected, the leakage prevention effect of the grease gun body 6 is improved. The electric push rod 23 is opened to drive the lifting block 24 to slide along the outer wall of the grease gun body 6, and drive the pull rod 25 to rotate. The pull rod 25 drives the slide bar 26 to slide along the outer wall of the fixed block 28, and drives the first guard plate 27 and the second guard plate 30 to slide in the center, so that the plug block 31 is inserted into the slot 32, so that the first guard plate 27 and the second guard plate 30 can prevent the oil outlet 29 from dripping.

[0055] like Figure 13 As shown, two groups of pull rods 25 are provided, and the position distribution of the two groups of pull rods 25 is symmetrical about the central axis of the lifting block 24. The outer wall contour of the connection between the first protective plate 27 and the second protective plate 30 is larger than the outer wall contour of the oil outlet 29. This is beneficial to achieve the effect of driving the relative sliding between the first protective plate 27 and the second protective plate 30 by setting two groups of pull rods 25 whose position distribution is symmetrical about the central axis of the lifting block 24.

[0056] like Figure 5 As shown, a servo motor 35 is provided on the outer wall of the mobile base 1, and a worm 36 is fixedly connected to the output end of the servo motor 35, and a worm gear 37 is engaged with the outer wall of the worm 36. The rotation center of the worm gear 37 is fixedly connected to the explosion-proof box 38 through a rotating shaft. When it is necessary to seal and reduce the noise of the injection pump components on the mobile base 1 through the explosion-proof box 38, the servo motor 35 can be turned on to rotate the worm 36 to drive the worm gear 37 to rotate. The rotation of the worm gear 37 drives the explosion-proof box 38 to perform relative flipping movement, and under the action of the cooling chamber 39 and the vacuum chamber 40, the various components of the injection pump are subjected to the effect of noise reduction and anti-static use.

[0057] like Figure 5As shown, the outer wall of the worm 36 is provided with two sets of spirals, and the two sets of spirals are arranged in opposite directions. There are two sets of explosion-proof boxes 38 and worm wheels 37. The position distribution of the two sets of explosion-proof boxes 38 and worm wheels 37 is symmetrical about the central axis of the mobile base 1, which is conducive to achieving the effect of driving the two sets of explosion-proof boxes 38 to flip relative to each other by setting two sets of worms 36 with opposite spirals.

[0058] like Figure 3 、 Figure 4 and Figure 11 As shown, the outer wall profile of the explosion-proof box 38 is U-shaped, a cooling chamber 39 is provided inside the explosion-proof box 38, and a vacuum chamber 40 is provided inside the explosion-proof box 38 on one side of the cooling chamber 39. The outer wall of the explosion-proof box 38 is provided with a corresponding transparent observation port and a connection interface. The cooling chamber 39 is used to place the fluorinated liquid, which is beneficial to achieve the effect of improving the noise reduction and anti-static use of the injection pump components on the mobile base 1 through the setting of the cooling chamber 39 and the vacuum chamber 40.

[0059] Working principle:

[0060] like Figure 1-18 As shown, when the explosion-proof electric injection pump is in use, first, a double-piston pressurizing structure is set in the grease injection gun body 6: the piston assembly inside the grease injection gun body 6 is improved, and a double-piston series design is adopted. The high-pressure oil output by the hydraulic pump 3 first pushes the first piston, and then drives the second piston for secondary pressurization through the linkage structure, which can significantly increase the grease injection pressure and meet the requirements of high-pressure grease injection working conditions. The coordinated work of the double pistons can make the grease injection flow more stable. When the hydraulic pump 3 transports the gas, it will first drive the first piston block 11 to move upward in the grease injection gun body 6, and then in the connecting pipe 18 Under the connection, the injection gas is delivered to the gas cylinder 19, squeezing the connecting block 20 and the second spring 21. When the first piston block 11 moves to one side of the squeezing rod 22 and stops moving, the squeezing rod 22 squeezes the sliding block 12 and the first spring 17. The sliding of the sliding block 12, through the rotation connection of the first rotating rod 13 and the second rotating rod 15, drives the connecting block 16 to slide along the outer wall of the second piston block 14, so that the second piston block 14 is pressurized for a second time, thereby increasing the grease injection pressure and meeting the requirements of high-pressure grease injection working conditions;

[0061] Next, when the oil outlet 29 needs to be sealed and protected to improve the leakage prevention effect of the grease gun body 6, the electric push rod 23 is opened, driving the lifting block 24 to slide along the outer wall of the grease gun body 6, and driving the pull rod 25 to rotate. The pull rod 25 drives the slide bar 26 to slide along the outer wall of the fixed block 28, and drives the first protective plate 27 and the second protective plate 30 to slide in the center, so that the insert block 31 is inserted into the slot 32, so that the first protective plate 27 and the second protective plate 30 can prevent the oil outlet 29 from dripping;

[0062] Finally, when it is necessary to seal and reduce the noise of the injection pump components on the mobile base 1 through the explosion-proof box 38, the servo motor 35 can be turned on to drive the worm gear 37 to rotate through the rotation of the worm 36. The rotation of the worm gear 37 drives the explosion-proof box 38 to perform relative flipping movement, and under the action of the cooling chamber 39 and the vacuum chamber 40, the various components of the injection pump can be used to reduce noise and prevent static electricity.

[0063] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, make some changes or modifications to equivalent embodiments using the technical contents disclosed above. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An explosion-proof electric injection pump, comprising a mobile base (1), characterized in that: An explosion-proof electric control box (2) is provided on the outer wall of the mobile base (1), a hydraulic pump (3) is provided on one side of the explosion-proof electric control box (2), an explosion-proof motor (4) is provided on one side of the hydraulic pump (3), an oil tank body (5) is provided on one side of the explosion-proof motor (4), a grease gun body (6) connected to the hydraulic pump (3) via an air pipe is provided on one side of the oil tank body (5), an end cover tightening detection rod (7) is provided on the outer wall of the grease gun body (6), an oil outlet pipe (8) is provided on the top of the grease gun body (6), a pressure gauge (9) is provided on the outer wall of the oil outlet pipe (8), and a telescopic pull rod (10) is slidably connected to the outer wall of the mobile base (1); The inner wall of the grease injection gun body (6) is slidably connected to a first piston block (11), the outer wall of the first piston block (11) is slidably connected to a sliding block (12), the outer wall of the sliding block (12) is rotatably connected to a first rotating rod (13), the inner wall of the grease injection gun body (6) is slidably connected to a second piston block (14) rotatably connected to one end of the first rotating rod (13), the outer wall of the first piston block (11) is rotatably connected to a second rotating rod (15), and one end of the second rotating rod (15) is rotatably connected to a connecting block (16) slidably connected to the bottom of the second piston block (14); The outer wall of the grease injection gun body (6) is provided with a connecting tube (18), one end of the connecting tube (18) is fixedly connected to an air cylinder (19), and the inner wall of the air cylinder (19) is slidably connected to an extrusion rod (22).

2. An explosion-proof electric injection pump according to claim 1, characterized in that: The connecting pipe (18) and the grease injection gun body (6) are connected to each other, and an oil replenishing pipe (33) is provided on the outer wall of the oil tank body (5) via a connecting pump. One end of the oil replenishing pipe (33) is fixedly connected to an oil replenishing tank (34). A liquid level sensor is installed inside the oil tank body (5), and a flow control valve is provided on the outer wall of the oil replenishing tank (34).

3. The explosion-proof electric injection pump according to claim 1, characterized in that: The inner wall of the air cylinder (19) is slidably connected to a connecting block (20), the outer wall of the connecting block (20) is fixedly connected to a second spring (21) fixedly connected to the outer wall of the pulling rod (25), and the outer wall of the sliding block (12) is fixedly connected to the first spring (17).

4. The explosion-proof electric injection pump according to claim 1, characterized in that: A first sliding groove is provided at a connection point between the outer wall of the first piston block (11) and the sliding block (12), a second sliding groove is provided at a connection point between the outer wall of the second piston block (14) and the connecting block (16), and an outer wall profile of a connection point between the first rotating rod (13) and the second rotating rod (15) is in an X shape.

5. The explosion-proof electric injection pump according to claim 1, characterized in that: The extrusion rod (22) is slidably connected to the outer wall of the grease injection gun body (6); the outer walls of the extrusion rod (22) and the sliding block (12) are both provided with sensing modules; the sliding block (12) is arranged on the motion trajectory of the extrusion rod (22); and the rising distance of the first piston block (11) is adapted to the horizontal telescopic distance of the extrusion rod (22).

6. The explosion-proof electric injection pump according to claim 1, characterized in that: The outer wall of the oil outlet pipe (8) is provided with an electric push rod (23), one end of the electric push rod (23) is fixedly connected to a lifting block (24) that is slidably connected to the outer wall of the oil outlet pipe (8), the outer wall of the lifting block (24) is rotatably connected to a pulling rod (25), the outer wall of the oil outlet pipe (8) is fixedly connected to a fixed block (28), the outer wall of the pulling rod (25) is rotatably connected to a sliding rod (26) that is slidably connected to the outer wall of the fixed block (28), the outer wall of the sliding rod (26) is fixedly connected to a first protective plate (27), the outer wall of the fixed block (28) is slidably connected to a second protective plate (30) located on one side of the first protective plate (27), an oil outlet (29) is provided at the top of the oil outlet pipe (8), the outer wall of the second protective plate (30) is fixedly connected to an insert block (31) that is plugged into the outer wall of the first protective plate (27), and a slot (32) is provided at the connection portion between the outer wall of the first protective plate (27) and the insert block (31).

7. The explosion-proof electric injection pump according to claim 6, characterized in that: Two groups of pull rods (25) are provided, and the positions of the two groups of pull rods (25) are symmetrical about the central axis of the lifting block (24). The outer wall profile of the connection portion between the first protective plate (27) and the second protective plate (30) is larger than the outer wall profile of the oil outlet (29).

8. The explosion-proof electric injection pump according to claim 1, characterized in that: A servo motor (35) is provided on the outer wall of the movable base (1); an output end of the servo motor (35) is fixedly connected to a worm (36); a worm wheel (37) is engaged with the outer wall of the worm wheel (36); and a rotation center of the worm wheel (37) is fixedly connected to an explosion-proof box (38) via a rotating shaft.

9. The explosion-proof electric injection pump according to claim 8, characterized in that: The outer wall of the worm (36) is provided with two groups of spirals, and the two groups of spirals are arranged in opposite directions. The explosion-proof box (38) and the worm wheel (37) are both provided with two groups, and the position distribution of the two groups of explosion-proof boxes (38) and worm wheels (37) are symmetrical about the central axis of the movable base (1).

10. The explosion-proof electric injection pump according to claim 8, characterized in that: The outer wall profile of the explosion-proof box (38) is U-shaped, a cooling cavity (39) is provided inside the explosion-proof box (38), a vacuum cavity (40) is provided inside the explosion-proof box (38) and is located on one side of the cooling cavity (39), a corresponding transparent observation port and a connection interface are provided on the outer wall of the explosion-proof box (38), and the cooling cavity (39) is used to place fluorinated liquid.

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