External pressure regulating mechanism for hydraulic lifting control valve

Abstract

The external pressure regulating mechanism for the hydraulic lifting control valve comprises a connecting pipeline, butt joint pipes are connected into the left side and the right side of the connecting pipeline in a penetrating mode, the outer ends of the butt joint pipes on the two sides are connected to an oil tank and the control valve in a penetrating mode respectively, and a flow baffle is fixedly connected into the connecting pipeline. An adjusting plate is connected to the inner side of the connecting pipeline in a nested mode, and a flow control mechanism capable of adjusting the pressure of the control valve is arranged between the adjusting plate and the flow baffle. According to the external pressure adjusting mechanism for the hydraulic lifting control valve, when a user starts a motor, the motor drives a rotating shaft to rotate, synchronously drives a driving gear to rotate and drives an adjusting plate to rotate at equal angles through a driven gear ring, and in the rotating process of the adjusting plate, an adjusting opening can correspondingly rotate, so that the pressure of the hydraulic lifting control valve is adjusted; and when the rotating angles of the adjusting ports are different, the flow of the hydraulic oil is also different, and therefore the pressure of the control valve is further adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of control valves, in particular to an external pressure regulating mechanism for a hydraulic lifting control valve. Background Art

[0002] The control valve is a control device used to adjust the flow of fluid in the industrial process. The hydraulic lifting control valve is a key component used to control the lifting action in the hydraulic system. By adjusting the flow direction, pressure and flow of the hydraulic oil, the lifting mechanism can be accurately controlled. In order to meet the lifting requirements of different working conditions, the pressure of the control valve needs to be adjusted. However, the existing control valve pressure regulating mechanism still has defects and deficiencies in some aspects that need to be improved:

[0003] For example, the application number is: CN202223257919.8d. A self-operated adjustable differential pressure control valve includes a self-operated differential pressure control valve body, the inner cavity of the self-operated differential pressure control valve body is provided with a liquid inlet cavity, the upper end of the inner cavity of the liquid inlet cavity is movably connected with a pressure plate, the bottom of the pressure plate is fixedly connected with a spring, and the bottom of the spring is fixedly connected with a floating block. The utility model has the effect of automatically adjusting the outlet opening according to the change of liquid pressure by setting a pressure plate, a spring and a floating block. The liquid moves upward in the liquid inlet cavity, pushing the floating block to move upward and squeezing the spring, thereby achieving the effect that the liquid can automatically adjust the outlet opening according to the change of liquid pressure, and solves the problem that the self-operated differential pressure control valve cannot perform the differential pressure setting operation alone. When the pressure range needs to be changed after being installed in the pipeline, a new control valve needs to be replaced. Such operation is not only time-consuming and labor-intensive, but also wastes resources and affects the flexibility of use.

[0004] The hydraulic control valve pressure regulating mechanism in the above documents is mostly regulated inside the control valve, and cannot control and regulate the amount of hydraulic oil entering. When more hydraulic oil enters, the pressure inside the control valve still increases, and the pressure regulating mechanism has certain instability;

[0005] The hydraulic control valve pressure regulating mechanism in the above document has poor sealing when docking with the hydraulic valve, and the sealing ring is easy to fall off. When the hydraulic oil is flowing, it may overflow, thus affecting the subsequent use of the hydraulic control valve.

[0006] Therefore, we propose an external pressure regulating mechanism for a hydraulic lifting control valve in order to solve the above-mentioned problems. Utility Model Content

[0007] The purpose of the utility model is to provide an external pressure regulating mechanism for a hydraulic lifting control valve, so as to solve the problems raised in the above-mentioned background technology that most of the adjustments are made inside the control valve, the amount of hydraulic oil entering cannot be controlled and regulated, and the sealing ring of the pressure regulator is not strong and easily falls off when it is connected to the hydraulic valve.

[0008] To achieve the above object, the utility model provides the following technical solution: an external pressure regulating mechanism for a hydraulic lifting control valve, comprising a connecting pipe, the left and right sides of the connecting pipe are connected with butt pipes, and the outer ends of the butt pipes on both sides are connected to the oil tank and the control valve respectively;

[0009] A baffle, wherein the baffle is fixedly connected to the inside of the connecting pipe, and an adjusting plate is nested and connected to the inside of the connecting pipe, and a flow control mechanism capable of regulating the pressure of the control valve is arranged between the adjusting plate and the baffle;

[0010] The engaging groove is arranged inside the connecting pipe, and a connecting strip is nested inside the engaging groove, and a sealing ring is fixedly connected to the outer side of the connecting strip, and a fixing mechanism is arranged between the connecting strip and the connecting pipe to prevent the sealing ring from falling off.

[0011] Furthermore, the flow control mechanism includes a main flow port, the main flow port is provided on the baffle plate, and a limiting groove is provided on the inner side of the baffle plate, and the limiting block is nested and connected inside the limiting groove;

[0012] The outer side of the adjustment plate is fixedly connected with a driven gear ring, an adjustment opening is opened on the adjustment plate, and a limit block is fixedly connected to the adjustment plate;

[0013] The outer side of the connecting pipe is fixedly connected with a fixing frame, and a rotating shaft is nested and connected on the fixing frame, and the outer end of the rotating shaft is fixedly connected with a motor;

[0014] The other end of the rotating shaft is fixedly connected with a driving gear, and the driving gear and the driven gear ring are meshed with each other.

[0015] Furthermore, the driven gear ring and the adjustment plate are an integrated structure, and the driven gear ring forms a rotating structure through a driving gear and a connecting pipe, and the driving gear is a quarter gear.

[0016] Furthermore, there are four regulating ports distributed in a ring shape about the center point of the regulating plate, and the diameters of the regulating ports increase successively, and the diameter of the main flow port is greater than the maximum diameter of the regulating port.

[0017] Furthermore, the fixing mechanism includes a slide slot, and a fixing rod is fixedly connected inside the slide slot, and a docking rod is nested and connected outside the fixing rod, and a return spring is fixedly connected between the docking rod and the slide slot, and the inner end of the docking rod is nested and connected to the connecting strip;

[0018] A material storage groove is provided at the inner end of the clamping groove, and quicklime is contained in the material storage groove.

[0019] Furthermore, the docking rod is "L"-shaped when viewed from the front, and the docking rod forms an elastic structure through a return spring and a slide groove.

[0020] Furthermore, the connecting strip and the sealing ring are an integrated structure, and the outer end of the sealing ring is in contact with the butt tube, and the connecting strip is made of low melting point rubber material.

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] 1 The user can connect the butt joint on one side of the oil tank to the butt joint on one side of the control valve through the connecting pipe. At this time, the hydraulic oil in the oil tank can enter the interior of the control valve through the butt joint and the connecting pipe, thereby completing the hydraulic lifting operation;

[0023] 2. The user can adjust the flow of hydraulic oil by rotating the adjustment plate and cooperating with the baffle plates, thereby further adjusting the pressure of the control valve;

[0024] 3. When the user starts the motor, the motor will drive the shaft to rotate, and synchronously drive the driving gear to rotate, and drive the adjustment plate to rotate at the same angle through the driven gear ring. When the adjustment plate rotates, the adjustment port will rotate accordingly, thereby limiting the main port. The flow rate of the hydraulic oil will be different when the adjustment port rotates at different angles, thereby further adjusting the pressure of the control valve;

[0025] 4. When the butt joint is connected to the inside of the connecting pipe, the sealing ring can be used to improve the sealing of the butt joint. The butt joint rod can be manually moved to move along the fixed rod. At this time, the sealing ring is connected to the inside of the engaging groove through the connecting strip. The butt joint rod is released. The butt joint rod is driven by the elastic force of the reset spring and nested and connected to the inside of the connecting strip to fix the connecting strip, thereby further improving the stability of the sealing ring and reducing the loosening of the sealing ring.

[0026] 5. When the sealing ring is loose, the connecting strip is not in close contact with the locking groove, and the storage groove is connected to the outside air. At this time, the quicklime inside the storage groove reacts with the air to dissipate heat. The connecting strip has a low melting point and melts due to the heat, filling the locking groove. At this time, the sealing ring is re-fixed to prevent the sealing ring from falling off, resulting in low sealing between the connecting pipe and the butt pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0028] Figure 2 This is a schematic diagram of the three-dimensional structure of the driving gear of the utility model;

[0029] Figure 3 This is a schematic diagram of the three-dimensional structure of the adjustment plate of the utility model;

[0030] Figure 4 This is a schematic diagram of the three-dimensional structure of the baffle of the utility model;

[0031] Figure 5 This is a schematic diagram of the three-dimensional structure of the driving gear of the utility model;

[0032] Figure 6 This is a schematic diagram of the front cross-sectional structure of the chute of the utility model;

[0033] Figure 7 It is a schematic diagram of the three-dimensional structure of the sealing ring of the utility model.

[0034] In the figure: 1. connecting pipe; 2. butt pipe; 3. baffle; 4. adjustment plate; 5. fixing frame; 6. rotating shaft; 7. motor; 8. driven gear ring; 9. main flow outlet; 10. driving gear; 11. adjustment outlet; 12. sealing ring; 13. limit groove; 14. limit block; 15. engaging groove; 16. connecting strip; 17. material storage groove; 18. reset spring; 19. butt rod; 20. slide groove; 21. fixing rod. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] Embodiment 1: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The technical solution shown in the figure, the utility model provides the following technical solution: an external pressure regulating mechanism for a hydraulic lifting control valve, a flow control mechanism is disclosed, and the control valve can be pressure-regulated by the flow control mechanism:

[0037] The baffle plate 3 is fixedly connected to the inside of the connecting pipe 1, and the inner side of the connecting pipe 1 is nested with an adjusting plate 4, and a flow control mechanism capable of regulating the pressure of the control valve is provided between the adjusting plate 4 and the baffle plate 3;

[0038] The flow control mechanism includes a main flow port 9, which is provided on the baffle plate 3, and a limiting groove 13 is provided on the inner side of the baffle plate 3, and a limiting block 14 is nested and connected inside the limiting groove 13;

[0039] The outer side of the adjustment plate 4 is fixedly connected with a driven gear ring 8, and the adjustment plate 4 is provided with an adjustment opening 11, and the adjustment plate 4 is fixedly connected with a limit block 14;

[0040] A fixing frame 5 is fixedly connected to the outer side of the connecting pipe 1, and a rotating shaft 6 is nested and connected to the fixing frame 5, and a motor 7 is fixedly connected to the outer end of the rotating shaft 6;

[0041] The other end of the rotating shaft 6 is fixedly connected with a driving gear 10, and the driving gear 10 is meshed with the driven gear ring 8;

[0042] The driven gear ring 8 and the adjustment plate 4 are an integrated structure, and the driven gear ring 8 forms a rotating structure with the connecting pipe 1 through the driving gear 10, and the driving gear 10 is a quarter gear. There are four adjustment ports 11 distributed in a ring about the center point of the adjustment plate 4, and the diameters of the adjustment ports 11 increase successively. The diameter of the main port 9 is greater than the maximum diameter of the adjustment port 11.

[0043] When the user starts the motor 7, the motor 7 will drive the rotating shaft 6 to rotate, and synchronously drive the driving gear 10 to rotate. When the driving gear 10 is rotating, it will synchronously drive the adjusting plate 4 to rotate at the same angle through the driven gear ring 8. When the adjusting plate 4 is rotating, the adjusting port 11 will rotate accordingly, thereby limiting and blocking the main port 9. The rotation angle of the adjusting port 11 is different, and the flow rate of the hydraulic oil is also different, thereby further adjusting the pressure of the control valve.

[0044] Embodiment 2: Figure 1 , Figure 6 and Figure 7 The technical solution shown in the figure, the utility model provides the following technical solution: an external pressure regulating mechanism for a hydraulic lifting control valve, a fixing mechanism is disclosed, and the sealing ring 12 can be prevented from falling off by the fixing mechanism:

[0045] The engaging groove 15 is provided inside the connecting pipe 1, and the connecting strip 16 is nested and connected inside the engaging groove 15, and the outer side of the connecting strip 16 is fixedly connected with the sealing ring 12, and a fixing mechanism is provided between the connecting strip 16 and the connecting pipe 1 to prevent the sealing ring 12 from falling off;

[0046] The fixing mechanism includes a slide groove 20, and a fixing rod 21 is fixedly connected inside the slide groove 20, and a docking rod 19 is nested and connected to the outside of the fixing rod 21. At the same time, a return spring 18 is fixedly connected between the docking rod 19 and the slide groove 20, and the inner end of the docking rod 19 is nested and connected to the connecting strip 16. The docking rod 19 is "L"-shaped when viewed from the front, and the docking rod 19 forms an elastic structure with the slide groove 20 through the return spring 18.

[0047] When the butt joint 2 is docked to the inside of the connecting pipe 1, the sealing ring 12 can be used to improve the sealing of the butt joint 2. The user can manually move the docking rod 19 to make the docking rod 19 move along the fixing rod 21. At this time, the sealing ring 12 is docked to the inside of the engaging groove 15 through the connecting strip 16. The butt joint rod 19 is released. The butt joint rod 19 is driven by the elastic force of the reset spring 18 to serve and nest into the inside of the connecting strip 16 to fix the connecting strip 16, thereby further improving the stability of the sealing ring 12 and reducing the loosening of the sealing ring 12.

[0048] Embodiment 3: Figure 6 and Figure 7 The technical solution shown in the figure, the utility model provides the following technical solution: an external pressure regulating mechanism for a hydraulic lifting control valve, a material storage tank 17 is disclosed, and the quicklime contained in the material storage tank 17 can improve the sealing performance:

[0049] A connecting pipe 1 is provided, and a butt pipe 2 is penetrated and connected inside the left and right sides of the connecting pipe 1, and the outer ends of the butt pipes 2 on both sides are respectively penetrated and connected to the oil tank and the control valve, the connecting strip 16 and the sealing ring 12 are an integrated structure, and the outer end of the sealing ring 12 is fitted with the butt pipe 2, and the connecting strip 16 is made of low melting point rubber material, and a material storage groove 17 is provided at the inner end of the engaging groove 15, and quicklime is contained in the material storage groove 17.

[0050] When the sealing ring 12 is loose, the connecting strip 16 is not in close contact with the engaging groove 15, and the material storage groove 17 is connected to the outside air. At this time, the quicklime inside the material storage groove 17 reacts with the air to dissipate heat. The connecting strip 16 has a low melting point and melts when heated, filling the engaging groove 15. At this time, the sealing ring 12 is fixed again to prevent the sealing ring 12 from falling off, resulting in a low sealing performance between the connecting pipe 1 and the butt pipe 2.

[0051] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0052] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An external pressure regulating mechanism for a hydraulic lifting control valve, comprising a connecting pipe (1), wherein the left and right sides of the connecting pipe (1) are penetrated and connected with a butt pipe (2), and the outer ends of the butt pipes (2) on both sides are penetrated and connected to an oil tank and a control valve respectively; Features: Also includes: A baffle plate (3), the baffle plate (3) being fixedly connected to the inside of the connecting pipe (1), and an adjusting plate (4) being nested and connected to the inside of the connecting pipe (1), and a flow control mechanism capable of regulating the pressure of the control valve is provided between the adjusting plate (4) and the baffle plate (3); A snap-fit ​​groove (15) is provided inside the connecting pipe (1), and a connecting strip (16) is nested and connected inside the snap-fit ​​groove (15), and a sealing ring (12) is fixedly connected to the outside of the connecting strip (16), and a fixing mechanism is provided between the connecting strip (16) and the connecting pipe (1) to prevent the sealing ring (12) from falling off.

2. The external pressure regulating mechanism for a hydraulic lift control valve according to claim 1, characterized in that: The flow control mechanism comprises a main flow opening (9), the main flow opening (9) is provided on the baffle plate (3), a limiting groove (13) is provided on the inner side of the baffle plate (3), and a limiting block (14) is nested and connected inside the limiting groove (13); The outer side of the adjustment plate (4) is fixedly connected to a driven gear ring (8), an adjustment opening (11) is provided on the adjustment plate (4), and a limit block (14) is fixedly connected to the adjustment plate (4); The outer side of the connecting pipe (1) is fixedly connected to a fixing frame (5), a rotating shaft (6) is nested and connected to the fixing frame (5), and the outer end of the rotating shaft (6) is fixedly connected to a motor (7); The other end of the rotating shaft (6) is fixedly connected with a driving gear (10), and the driving gear (10) and the driven gear ring (8) are meshed with each other.

3. The external pressure regulating mechanism for a hydraulic lift control valve according to claim 2, characterized in that: The driven gear ring (8) and the adjustment plate (4) are an integrated structure, and the driven gear ring (8) forms a rotating structure with the connecting pipe (1) through the driving gear (10), and the driving gear (10) is a quarter gear.

4. The external pressure regulating mechanism for a hydraulic lift control valve according to claim 2, characterized in that: There are four regulating ports (11) distributed in an annular manner about the center point of the regulating plate (4), and the diameters of the regulating ports (11) increase successively. The diameter of the main flow port (9) is greater than the maximum diameter of the regulating port (11).

5. The external pressure regulating mechanism for a hydraulic lift control valve according to claim 1, characterized in that: The fixing mechanism comprises a slide groove (20), and a fixing rod (21) is fixedly connected inside the slide groove (20), and a docking rod (19) is nested and connected outside the fixing rod (21), and a return spring (18) is fixedly connected between the docking rod (19) and the slide groove (20), and the inner end of the docking rod (19) is nested and connected to the connecting strip (16); A material storage groove (17) is provided at the inner end of the engaging groove (15), and quicklime is contained in the material storage groove (17).

6. The external pressure regulating mechanism for a hydraulic lift control valve according to claim 5, characterized in that: The docking rod (19) is in an "L" shape when viewed from the front, and the docking rod (19) forms an elastic structure through a return spring (18) and a slide groove (20).

7. The external pressure regulating mechanism for a hydraulic lift control valve according to claim 5, characterized in that: The connecting strip (16) and the sealing ring (12) are an integrated structure, and the outer end of the sealing ring (12) is in contact with the butt joint (2), and the connecting strip (16) is made of a low melting point rubber material.

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