Hydraulic control valve

Abstract

The utility model relates to the technical field of hydraulic control valves, and discloses a hydraulic control valve which comprises a valve body, a sliding rod is vertically connected in the valve body in a sliding mode, a rack is arranged on one side of the sliding rod, and a first bevel gear meshed with the rack is vertically connected to the top of the valve body in a rotating mode. The top of the valve body is horizontally and rotationally connected with a second bevel gear meshed with the first bevel gear, a rotating rod is arranged on the second bevel gear in a penetrating mode, the rotating rod is sleeved with a rotating plate, and a piston is arranged at the bottom of the sliding rod. When water flow in the hydraulic control valve is large, the piston is jacked upwards under fluid pressure, a sliding rod can ascend, the sliding rod drives a rack to vertically move upwards, through meshing transmission, a first bevel gear drives a second bevel gear to rotate, the second bevel gear drives a rotating rod to rotate, the rotating rod drives a rotating plate to rotate, and the flow in the valve body can be adjusted; the pressure of the liquid discharging port can be relieved in time, the liquid discharging flow is increased, and pipeline bursting is avoided.

Description

Technical Field

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

[0002] Valves are pipe accessories used to open and close pipes, control flow direction, and adjust and control the parameters (temperature, pressure, and flow) of the conveying medium. According to their functions, they can be divided into shut-off valves, check valves, regulating valves, etc. Valves are control components in fluid conveying systems, with functions such as shut-off, regulation, diversion, prevention of backflow, pressure stabilization, flow diversion, or overflow pressure relief. Valves used in fluid control systems come in a wide variety of varieties and specifications, from the simplest shut-off valves to various valves used in extremely complex automatic control systems.

[0003] For example, the Chinese patent with publication number CN215567997U and titled "A Hydraulic Control Valve" includes a valve body, which is characterized in that connecting rings are installed at both ends of the valve body, a plurality of connecting holes are opened on the connecting rings, a hydraulic mechanism is arranged at the right end of the valve body, a valve core is arranged in the valve body, a bearing seat is embedded in the left wall of the valve body, and slots are symmetrically arranged at the right end of the bearing seat, and the two slots are located at the front and rear sides of the two valve cores; a circular groove is arranged on the right wall of the valve body, a circular plate is arranged in the circular groove, a hidden groove is arranged at the left end of the circular plate, a rotating rod is installed at the left end of the hydraulic mechanism, and the rotating rod passes through the valve body and is fixedly connected to the circular plate, a movable plate is arranged in the rotating rod, and the movable plate and the rotating plate are The inner wall of the moving rod is slidably connected; a threaded rod is arranged on the upper inner part of the rotating rod, and the threaded rod passes through the moving plate and is rotatably connected to the inner wall of the rotating rod, and the threaded rod and the moving plate are threadedly connected; the moving plate and the fixed rod are slidably connected, a plug rod is installed on the left end of the moving plate, and the plug rod passes through the left end of the rotating rod, and clamping blocks are symmetrically installed on the upper and lower ends of the plug rod, a connecting groove is opened at the position of the valve core corresponding to the plug rod, and clamping grooves are symmetrically opened at both ends of the connecting groove; hollow blocks are symmetrically installed on the front and rear ends of the valve core, a limit plate is arranged in the hollow block, a positioning block is installed on the left end of the limit plate, and the positioning block passes through the hollow block, a pull rod is installed on the right end of the limit plate, and the pull rod passes through the hollow block, and a spring is arranged on the outer sleeve of the pull rod.

[0004] Although the hydraulic control valve in the above patent is practical and convenient, it also has shortcomings. When in use, the hydraulic control valve in the above patent cannot relieve the pressure of the discharge port in time and cannot discharge the liquid in time, which can easily cause the pipeline to burst and has poor safety in use. Utility Model Content

[0005] The purpose of the utility model is to provide a hydraulically controlled valve to solve the deficiencies in the above-mentioned prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: the hydraulic control valve includes a valve body, a sliding rod is vertically slidably connected in the valve body, a rack is provided on one side of the sliding rod, the top of the valve body is vertically rotatably connected to a first bevel gear meshing with the rack, the top of the valve body is horizontally rotatably connected to a second bevel gear meshing with the first bevel gear, a rotating rod is passed through the second bevel gear, a rotating plate is sleeved on the rotating rod, and a piston is provided at the bottom of the sliding rod.

[0007] Furthermore, a spring is sleeved on the slide rod, one end of the spring is fixedly connected to the top of the piston, and the other end of the spring is fixedly connected to the inner wall of the valve body.

[0008] Furthermore, an air bag is provided at the bottom of the piston.

[0009] Furthermore, a fixing plate is fixedly connected to the top of the valve body, and a rotating shaft is rotatably connected to a side of the fixing plate close to the first bevel gear. An end of the rotating shaft close to the first bevel gear is coaxially fixedly connected to the first bevel gear, and a rocker arm is sleeved on the rotating shaft. A switch and an alarm light are provided on the valve body, the rocker arm is abutted against the switch, and the switch and the alarm light are electrically connected.

[0010] Furthermore, a guide rod is vertically fixedly connected to the valve body, and the rack is slidably sleeved on the guide rod.

[0011] Compared with the prior art, the utility model provides the following beneficial effects: when the water flow in the hydraulic control valve is large, the piston is pushed upward by the fluid pressure, which can realize the rise of the sliding rod, and the sliding rod drives the rack to move vertically upward. Through meshing transmission, the first bevel gear drives the second bevel gear to rotate, the second bevel gear drives the rotating rod to rotate, and the rotating rod drives the rotating plate to rotate, which can adjust the flow rate inside the valve body, can timely relieve the pressure of the discharge port, increase the discharge flow rate, and avoid pipeline bursting. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0013] Figure 1 The overall structural diagram provided for the embodiment of the utility model;

[0014] Figure 2 A top view of the overall structure provided for an embodiment of the utility model;

[0015] Figure 3 for Figure 2 Sectional view at AA in the middle;

[0016] Figure 4 for Figure 2 Cross-sectional view at BB in the middle.

[0017] Explanation of the accompanying reference numerals: 1. valve body; 2. sliding rod; 3. rack; 4. guide rod; 5. first bevel gear; 6. second bevel gear; 7. rotating rod; 8. fixing plate; 9. rocker arm; 10. switch; 11. warning light; 12. rotating shaft; 13. spring; 14. piston; 15. airbag; 16. rotating plate. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0019] See also Figure 1-4 The utility model provides a technical solution in an embodiment: the hydraulic control valve comprises a valve body 1, a slide rod 2 is vertically slidably connected inside the valve body 1, a rack 3 is provided on one side of the slide rod 2, a first bevel gear 5 meshing with the rack 3 is vertically rotatably connected to the top of the valve body 1, a second bevel gear 6 meshing with the first bevel gear 5 is horizontally rotatably connected to the top of the valve body 1, a rotating rod 7 is passed through the second bevel gear 6, a rotating plate 16 is sleeved on the rotating rod 7, and a piston 14 is provided at the bottom of the slide rod 2.

[0020] As a preferred technical solution, a spring 13 is sleeved on the slide rod 2, one end of the spring 13 is fixedly connected to the top of the piston 14, and the other end is fixedly connected to the inner wall of the valve body 1. Specifically, when the water flow gradually decreases, the elastic potential energy of the spring 13 drives the slide rod 2 to move vertically downward, so that the rack 3 moves vertically downward, and through the cooperation between the first bevel gear 5, the second bevel gear 6 and the rotating rod 7, the rotating plate 16 rotates in the opposite direction, and the rotating plate 16 plays a role of automatic flow cutoff.

[0021] As a preferred technical solution, an air bag 15 is provided at the bottom of the piston 14. Specifically, the air bag 15 is subjected to water pressure, which enables the piston 14 to push the slide rod 2 to move vertically upward more quickly.

[0022] As a preferred technical solution, a fixed plate 8 is fixedly connected to the top of the valve body 1, and a rotating shaft 12 is rotatably connected to the side of the fixed plate 8 close to the first bevel gear 5. One end of the rotating shaft 12 close to the first bevel gear 5 is coaxially fixedly connected to the first bevel gear 5, and a rocker arm 9 is sleeved on the rotating shaft 12. A switch 10 and an alarm light 11 are provided on the valve body 1. The rocker arm 9 abuts and cooperates with the switch 10, and the switch 10 is electrically connected to the alarm light 11. Specifically, when the water flow is large, the rack 3 moves upward to drive the first bevel gear 5 to rotate, and the first bevel gear 5 drives the rocker arm 9 to rotate through the rotating shaft 12. When the water flow reaches the critical point, the rocker arm 9 abuts and squeezes the switch 10, triggering the alarm light 11, which can promptly issue an alarm to remind the staff to drain the liquid in time, avoid pipeline bursting, and improve safety in use.

[0023] As a preferred technical solution, a guide rod 4 is vertically fixedly connected to the valve body 1, and the rack 3 is slidably sleeved on the guide rod 4. Specifically, the guide rod 4 guides the movement direction of the rack 3. At the same time, since the rack 3 is fixedly connected to the sliding rod 2, it also guides the sliding rod 2 to prevent the sliding rod 2 from circumferential rotation.

[0024] Working principle: When the water flow in the hydraulic control valve is large, the piston 14 is lifted upward by the fluid pressure, which can realize the rise of the slide rod 2, and the slide rod 2 drives the rack 3 to move vertically upward. Through meshing transmission, the first bevel gear 5 drives the second bevel gear 6 to rotate, and the second bevel gear 6 drives the rotating rod 7 to rotate, and the rotating rod 7 drives the rotating plate 16 to rotate, which can adjust the internal flow of the valve body 1, can timely relieve the pressure of the discharge port, and increase the discharge flow. The first bevel gear 5 drives the rocker arm 9 to rotate through the rotating shaft 12. When it reaches the critical point of the water flow, the rocker arm 9 abuts the extrusion switch 10 and triggers the alarm light 11, which can promptly issue an alarm to remind the staff to drain the fluid in time, avoid pipeline bursting, and improve safety in use.

[0025] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A hydraulically controlled valve, characterized in that: The invention comprises a valve body (1), wherein a slide bar (2) is vertically slidably connected inside the valve body (1), a rack (3) is provided on one side of the slide bar (2), the top of the valve body (1) is vertically rotatably connected to a first bevel gear (5) meshing with the rack (3), the top of the valve body (1) is horizontally rotatably connected to a second bevel gear (6) meshing with the first bevel gear (5), a rotating rod (7) is passed through the second bevel gear (6), a rotating plate (16) is sleeved on the rotating rod (7), and a piston (14) is provided at the bottom of the slide bar (2).

2. A hydraulically controlled valve according to claim 1, characterized in that: A spring (13) is sleeved on the slide rod (2), one end of the spring (13) is fixedly connected to the top of the piston (14), and the other end of the spring (13) is fixedly connected to the inner wall of the valve body (1).

3. A hydraulically controlled valve according to claim 1, characterized in that: An air bag (15) is provided at the bottom of the piston (14).

4. A hydraulically controlled valve according to claim 1, characterized in that: A fixing plate (8) is fixedly connected to the top of the valve body (1); a rotating shaft (12) is rotatably connected to a side of the fixing plate (8) close to the first bevel gear (5); an end of the rotating shaft (12) close to the first bevel gear (5) is coaxially fixedly connected to the first bevel gear (5); a swing rod (9) is sleeved on the rotating shaft (12); a switch (10) and an alarm light (11) are provided on the valve body (1); the swing rod (9) is in abutment with the switch (10); and the switch (10) and the alarm light (11) are electrically connected.

5. A hydraulically controlled valve according to claim 1, characterized in that: A guide rod (4) is vertically fixedly connected to the valve body (1), and the rack (3) is slidably sleeved on the guide rod (4).

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