Composite overflow regulation and control valve

Abstract

The utility model relates to the technical field of overflow control valves, and discloses a composite overflow control valve which comprises a valve shell, the top of the valve shell is fixedly connected with a brake motor, the output end of the brake motor is fixedly connected with a first gear, and the left side of the top of the valve shell is in threaded connection with an adjusting pipe. A pressurizing block is fixedly connected to the bottom end of the adjusting pipe, a conical head rod is slidably connected to the inner wall of the adjusting pipe, a first spring is fixedly connected to the bottom of the pressurizing block, and a sealing ring is fixedly connected to the bottom of the first spring. According to the utility model, the output end of the brake motor drives the other two gears meshed and connected with the upper gear to adjust the adjusting pipe and increase the pressure of the spring, so that the pressure required to be changed by the valve can be adjusted by the motor, and the valve cores of the two shunting pipelines can quickly release liquid with high pressure in the pipelines; and damage to the pipeline is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of overflow valves, in particular to a composite overflow control valve. Background Art

[0002] The overflow valve is used in the hydraulic system of construction machinery to play the role of overload protection and pressure regulation. By adjusting the spring pressure of the overflow valve, the maximum working pressure of the hydraulic system can be set. When the system pressure reaches the set value, the overflow valve opens and discharges the excess oil back to the tank, thereby keeping the system pressure stable near the set value. When the system fails or an abnormal situation occurs, the overflow valve can automatically open to prevent the system pressure from being too high and damaging the equipment.

[0003] When the hydraulic system is not in operation, the valve core of the direct-acting relief valve is tightly pressed against the valve seat under the action of the spring force, completely isolating the oil inlet and the oil outlet. At this time, the oil in the system cannot flow out through the relief valve. When the system pressure gradually increases, the liquid pressure acting on the bottom of the valve core overcomes the spring force, and the valve core begins to move upward. The oil flows from the oil inlet through the gap between the valve core and the valve seat into the oil outlet, and then returns to the oil tank, so that the pressure in the pipeline is maintained at a relatively stable level.

[0004] When the overflow valve is used in mechanical operation, the liquid pressure inside the pipeline will change due to changes in the mechanical operation. At this time, it needs to be manually regulated. Since the parts inside the hydraulic valve are relatively delicate, the corresponding pressure needs to be calculated and fine adjustments need to be made. In addition, the hydraulic valve is set inside the machine, and it is more cumbersome to adjust it, which delays the efficiency of work. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a composite overflow control valve, which aims to improve the problem in the prior art that the overflow valve needs to be manually adjusted multiple times due to changes in internal pressure during operation.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a compound overflow control valve, including a valve housing, the top of the valve housing is fixedly connected to a brake motor, the output end of the brake motor is fixedly connected to gear one, the gear one is meshed with gear two, the bottom of the gear two is rotatably connected to a pulley, the top left side of the valve housing is threadedly connected to an adjusting tube, the top of the adjusting tube is fixedly connected to gear three, the gear three is meshed with the gear two, the bottom end of the adjusting tube is fixedly connected to a pressure block, the inner wall of the adjusting tube is slidably connected to a cone head rod, the bottom of the pressure block is fixedly connected to spring one, the bottom of the spring one is fixedly connected to a sealing ring, the sealing ring passes through the outer wall of the cone head rod, and a diversion mechanism is provided inside the valve housing, and the diversion mechanism is used for secondary diversion of the valve.

[0007] As a further description of the above technical solution:

[0008] The diverter mechanism includes a diverter valve housing, which is fixedly connected to the bottom of the inner wall of the valve housing, a second spring is fixedly connected to the top of the inner wall of the diverter valve housing, a valve core is fixedly connected to the bottom of the second spring, and the left and right sides of the bottom end of the inner wall of the diverter valve housing are fixedly connected to limit blocks, and sliding grooves are provided on both sides of the outer wall of the valve core, and the sliding grooves are slidably connected to the limit blocks. An overflow channel 2 is provided at the bottom of the inner wall of the valve housing, and the bottom of the valve core fits in with the corner of the overflow channel 2.

[0009] As a further description of the above technical solution:

[0010] An input port is provided on the left side of the bottom of the valve housing, and an output port is provided on the right side of the bottom of the valve housing.

[0011] As a further description of the above technical solution:

[0012] A filter tube is fixedly connected to the inner wall of the input port, and a rubber pad is fixedly connected to the bottom of the output port and the input port.

[0013] As a further description of the above technical solution:

[0014] A pressure measuring device is fixedly connected to the inner wall of the overflow channel 2, and an overflow channel 1 is opened in the middle of the inner wall of the valve housing, and the right side of the overflow channel 1 is connected to the overflow channel 2.

[0015] As a further description of the above technical solution:

[0016] A speed meter is fixedly connected to the top right side of the valve housing, the bottom end of the speed meter passes through the valve housing and is arranged on the inner wall of the overflow channel 1, and a data module is fixedly connected to the rear side of the speed meter.

[0017] As a further description of the above technical solution:

[0018] A protective cover is fixedly connected to the top of the valve housing, and an inspection plate is fixedly connected to the right side of the protective cover.

[0019] As a further description of the above technical solution:

[0020] A pressure gauge is fixedly connected to the right side of the valve housing, and mounting feet are fixedly connected to the front and rear sides of the valve housing. A plurality of bolt holes are provided at the bottom of the mounting feet.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, the output end of the brake motor drives the other two gears meshing with the upper gear to adjust the regulating tube. The regulating tube is threadedly connected to the valve housing. When the top gear rotates, it can push the pressure block below to move downward, increase the pressure of the spring, and increase the pressure that pushes the cone head rod upward, so that the motor can adjust the pressure required to change the valve, avoiding the need for manual control and saving working time.

[0023] 2. In the present invention, a diverter valve is also provided inside the valve. The spring provided inside the diverter valve shell can make the valve core slide up and down on its inner wall. When the pressure of the circulating liquid is greater than the elastic force of the internal spring, the valve core moves upward, and the liquid can enter the output port through the overflow pipe below. When the liquid pressure is less than the elastic force of the spring, the valve core will not move and the overflow pipe below will be sealed. When the pressure in the pipe suddenly increases, it can be quickly released to avoid damage to the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a three-dimensional schematic diagram of a composite overflow control valve proposed by the utility model;

[0025] Figure 2 This is a cross-sectional view of a composite overflow control valve proposed by the present utility model;

[0026] Figure 3 for Figure 2 A magnified view of point A;

[0027] Figure 4 This is a partial structural diagram of a composite overflow control valve proposed by the present invention;

[0028] Figure 5 The figure is a side view of a composite overflow control valve proposed by the utility model.

[0029] Legend:

[0030] 1. Valve housing; 2. Diverter mechanism; 201. Diverter valve housing; 202. Spring 2; 203. Valve core; 204. Slide; 205. Limit block; 206. Overflow channel 2; 3. Brake motor; 4. Gear 1; 5. Gear 2; 6. Pulley; 7. Regulating tube; 8. Gear 3; 9. Cone rod; 10. Pressure block; 11. Spring 1; 12. Sealing ring; 13. Filter tube; 14. Input port; 15. Output port; 16. Rubber pad; 17. Pressure gauge; 18. Overflow channel 1; 19. Speed meter; 20. Data module; 21. Protective cover; 22. Inspection card; 23. Pressure gauge; 24. Mounting foot; 25. Bolt hole. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Reference Figure 1 、 Figure 2 and Figure 4 , the utility model provides an embodiment: a composite overflow control valve, including a valve housing 1, the top of the valve housing 1 is fixedly connected to a brake motor 3, the output end of the brake motor 3 is fixedly connected to a gear 1 4, the gear 1 4 is meshedly connected to a gear 2 5, and the bottom of the gear 2 5 is rotatably connected to a pulley 6, the top left side of the valve housing 1 is threadedly connected to an adjusting tube 7, the top of the adjusting tube 7 is fixedly connected to a gear 3 8, the gear 3 8 is meshed with the gear 2 5, the bottom end of the adjusting tube 7 is fixedly connected to a pressure block 10, the inner wall of the adjusting tube 7 is slidably connected to a cone head rod 9, the bottom of the pressure block 10 is fixedly connected to a spring 11, the bottom of the spring 11 is fixedly connected to a sealing ring 12, the sealing ring 12 passes through the outer wall of the cone head rod 9, and a diverter mechanism 2 is provided inside the valve housing 1. The diverter mechanism 2 is used for secondary diversion of the valve, an input port 14 is provided on the left side of the bottom of the valve housing 1, and an output port 15 is provided on the right side of the bottom of the valve housing 1;

[0033] Specifically, when the brake motor 3 rotates, the gear 1 4 connected at the top drives the gear 2 5 to rotate, and the pulley 6 connected to the bottom of the gear 2 5 can make the gear 2 5 rotate in place. The top of the adjusting tube 7 is fixed with a gear 3 8. When the gear 2 5 rotates, it drives the gear 3 8, thereby making the adjusting tube 7 move up and down. The adjusting tube 7 can push the pressurizing block 10 to move in the cavity opened inside the valve housing 1. The top of the cone head rod 9 can slide up and down on the inner wall of the adjusting tube 7. The spring 11 on the outer wall of the cone head rod 9 can make the cone head rod 9 slide up and down when the pressure changes. The sealing ring 12 fixed on the outer wall of the cone head rod 9 can seal the cavity on the outer wall of the cone head rod 9 when it is not moving to prevent liquid from entering. The input port 14 and output port 15 opened at the bottom of the valve housing 1 can allow liquid to enter from the left. When the pressure increases, it flows back to the oil tank from the output port 15 on the right.

[0034] Reference Figure 2 、 Figure 3 and Figure 4 , the utility model provides an embodiment: the diverter mechanism 2 includes a diverter valve housing 201, the diverter valve housing 201 is fixedly connected to the bottom of the inner wall of the valve housing 1, the top of the inner wall of the diverter valve housing 201 is fixedly connected to a spring 202, the bottom of the spring 202 is fixedly connected to a valve core 203, the left and right sides of the bottom end of the inner wall of the diverter valve housing 201 are fixedly connected to limit blocks 205, and the outer wall of the valve core 203 is provided with sliding grooves 204 on both sides, the sliding grooves 204 are slidably connected to the limit blocks 205, the bottom of the inner wall of the valve housing 1 is provided with an overflow channel 206, the bottom of the valve core 203 is matched with the corner of the overflow channel 206, the inner wall of the overflow channel 206 is fixedly connected with a pressure gauge 17, and the middle part of the inner wall of the valve housing 1 is provided with an overflow channel 18, and the right side of the overflow channel 18 is communicated with the overflow channel 206;

[0035] Specifically, the diverter valve housing 201 fixed inside the valve housing 1 plays a fixing role for the diverter mechanism 2, and the sliding grooves 204 opened on both sides of the valve core 203 fit into the two limit blocks 205 fixed at the bottom of the diverter valve housing 201, so that the valve core 203 can slide up and down inside the diverter valve housing 201, but will not separate from the diverter valve housing 201. The spring 202 placed inside the diverter valve housing 201 exerts downward pressure on the valve core 203. When the liquid pressure inside the valve body is less than the spring 202, the valve core 203 remains in position and seals the corner of the overflow channel 206. When the liquid pressure inside the valve body is greater than the spring 202, the valve core 203 moves upward, and the liquid can enter the output port 15 through the overflow channel 206. The end of the overflow channel 1 18 is connected to the overflow channel 206. When the pressure suddenly increases, the pressure inside the valve body can be quickly released to reduce the internal pressure.

[0036] Reference Figure 1 、 Figure 2 and Figure 5 The present utility model provides an embodiment in which a filter tube 13 is fixedly connected to the inner wall of the input port 14, a rubber pad 16 is fixedly connected to the bottom of the output port 15 and the input port 14, a speed meter 19 is fixedly connected to the top right side of the valve housing 1, the bottom end of the speed meter 19 passes through the valve housing 1 and is arranged on the inner wall of the overflow channel 18, a data module 20 is fixedly connected to the rear side of the speed meter 19, a protective cover 21 is fixedly connected to the top of the valve housing 1, an inspection plate 22 is fixedly connected to the right side of the protective cover 21, a pressure gauge 23 is fixedly connected to the right side of the valve housing 1, and mounting feet 24 are fixedly connected to the front and rear sides of the valve housing 1, and a plurality of bolt holes 25 are provided at the bottom of the mounting feet 24;

[0037] Specifically, the filter tube 13 arranged inside the input port 14 can simply filter the liquid entering the valve body. The rubber pad 16 fixed at the bottom of the output port 15 and the input port 14 can increase the sealing effect during installation. The bottom of the speed meter 19 is arranged inside the overflow channel 18, which can monitor the flow rate of the liquid in the channel and adjust the valve. The protective cover 21 fixed on the top of the valve housing 1 provides dust protection for the device on the top of the valve. The inspection plate 22 fixed on the right side of the protective cover 21 can record the last inspection time of the staff. The pressure gauge 23 can intuitively show the pressure of the liquid inside the valve body. The multiple bolt holes 25 opened on the mounting foot 24 can facilitate the installation of the valve.

[0038] Working principle: When the brake motor 3 drives the gear 1 4 on the output end to rotate, the gear 2 5 and gear 3 8 meshing with it rotate synchronously, so that the regulating tube 7 moves up and down, and the regulating tube 7 can push the pressure block 10 to move in the cavity opened inside the valve housing 1. The top of the cone head rod 9 can slide up and down on the inner wall of the regulating tube 7. The sealing ring 12 fixed on the outer wall of the cone head rod 9 can seal the cavity on the outer wall of the cone head rod 9 when it is not moving, so as to prevent liquid from entering. When the liquid pressure moves the cone head rod 9 upward, the sealing ring 12 moves away from the overflow channel 18, so that the liquid can enter the interior and then be discharged from the output port 15 connected to the end. The brake motor 3 adjusts the pressure of the liquid circulation inside the valve body through the pressure adjustment of the spring 11, thereby eliminating the time wasted in manually adjusting the valve pressure.

[0039] In addition, the valve core 203 inside the diverter valve housing 201 has slide grooves 204 on both sides, and the slide grooves 204 fit with the two limit blocks 205 fixed at the bottom of the diverter valve housing 201, so that the valve core 203 can slide up and down inside the diverter valve housing 201, but will not separate from the diverter valve housing 201. The spring 202 placed inside the diverter valve housing 201 applies downward pressure on the valve core 203. When the liquid pressure inside the valve body is less than the spring 202, the valve core 203 maintains its position and seals the corner of the overflow channel 206. When the liquid pressure inside the valve body is greater than the spring 202, the valve core 203 moves upward, and the liquid can enter the output port 15 through the overflow channel 206. The cooperation of the two overflow pipes can enable the valve to quickly release the liquid to the output port 15 when facing a sudden increase in internal liquid pressure, thereby avoiding damage to internal parts due to excessive pressure.

[0040] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A composite overflow control valve, comprising a valve housing (1), characterized in that: The top of the valve housing (1) is fixedly connected to a brake motor (3), the output end of the brake motor (3) is fixedly connected to a gear 1 (4), the outer wall of the gear 1 (4) is meshedly connected to a gear 2 (5), the bottom of the gear 2 (5) is rotatably connected to a pulley (6), the left side of the top of the valve housing (1) is threadedly connected to an adjustment tube (7), the top of the adjustment tube (7) is fixedly connected to a gear 3 (8), and the gear 3 (8) is meshedly connected to the gear 2 (5). The bottom end of the regulating tube (7) is fixedly connected to a pressure block (10), the inner wall of the regulating tube (7) is slidably connected to a cone head rod (9), the bottom of the pressure block (10) is fixedly connected to a spring 1 (11), the bottom of the spring 1 (11) is fixedly connected to a sealing ring (12), the sealing ring (12) passes through the outer wall of the cone head rod (9), and a diversion mechanism (2) is provided inside the valve housing (1), and the diversion mechanism (2) is used for secondary diversion of the valve.

2. A compound overflow control valve according to claim 1, characterized in that: The diversion mechanism (2) includes a diversion valve housing (201), the diversion valve housing (201) is fixedly connected to the bottom of the inner wall of the valve housing (1), the top of the inner wall of the diversion valve housing (201) is fixedly connected to a second spring (202), the bottom of the second spring (202) is fixedly connected to a valve core (203), the left and right sides of the bottom end of the inner wall of the diversion valve housing (201) are fixedly connected to limit blocks (205), the outer wall of the valve core (203) is provided with sliding grooves (204) on both sides, the sliding grooves (204) are slidably connected to the limit blocks (205), the bottom of the inner wall of the valve housing (1) is provided with a second overflow channel (206), and the bottom of the valve core (203) fits in the corner of the second overflow channel (206).

3. The compound overflow control valve according to claim 1, characterized in that: An input port (14) is provided on the left side of the bottom of the valve housing (1), and an output port (15) is provided on the right side of the bottom of the valve housing (1).

4. A compound overflow control valve according to claim 3, characterized in that: The inner wall of the input port (14) is fixedly connected to a filter tube (13), and the output port (15) and the bottom of the input port (14) are fixedly connected to a rubber pad (16).

5. The compound overflow control valve according to claim 2, characterized in that: A pressure measuring device (17) is fixedly connected to the inner wall of the overflow channel 2 (206), and an overflow channel 1 (18) is opened in the middle of the inner wall of the valve housing (1), and the right side of the overflow channel 1 (18) is connected to the overflow channel 2 (206).

6. The composite overflow control valve according to claim 5, characterized in that: A speed meter (19) is fixedly connected to the top right side of the valve housing (1), the bottom end of the speed meter (19) passes through the valve housing (1) and is arranged on the inner wall of the overflow channel (18), and a data module (20) is fixedly connected to the rear side of the speed meter (19).

7. The composite overflow control valve according to claim 1, characterized in that: A protective cover (21) is fixedly connected to the top of the valve housing (1), and an inspection plate (22) is fixedly connected to the right side of the protective cover (21).

8. The composite overflow control valve according to claim 1, characterized in that: A pressure gauge (23) is fixedly connected to the right side of the valve housing (1), and mounting feet (24) are fixedly connected to the front and rear sides of the valve housing (1). A plurality of bolt holes (25) are provided at the bottom of the mounting feet (24).

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