Seven-limiting quantifiable electro-hydraulic push rod three-way distribution valve

Abstract

The utility model relates to a seven-limit quantifiable electro-hydraulic push rod three-way distributing valve, which is characterized in that the inflection point of discharge ports symmetrically arranged on two sides is connected with a valve plate through a valve shaft, one end of the valve shaft is connected with a transmission mechanism, the transmission mechanism is arranged on one side of a three-way groove shell side arm, and the other end of the valve shaft is connected with a limit detection rod; the limiting detection rod is arranged on the other side of the side arm of the three-way groove shell, the transmission mechanism drives the limiting detection rod and the valve plate to rotate synchronously through the valve shaft, seven limiting switches are arranged on the other side of the side arm of the three-way groove shell, and the seven limiting switches are evenly distributed in the rotating stroke of the limiting detection rod. The utility model has the advantages that after the electro-hydraulic push rod stops acting, the indicating lamp of the corresponding limit switch is lightened, the limit switch is connected with the digital quantity input module, and the CPU module is connected with the HMI man-machine interaction screen, so that an operator can check the state information of the limit switch at any time on the HMI man-machine interaction screen or on site, namely the state of the valve plate, the operation is simple, and the working efficiency is high. The maintenance is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of material distribution, in particular to a seven-position quantitative electro-hydraulic push rod three-way material distribution valve. Background Art

[0002] The transportation of solid granules and powdered materials is often required in industries such as building materials, metallurgy, mining, light industry, and grain. In these conveying systems, the direction of material flow often needs to be changed, and three-way dispensing valves are commonly used. Existing electro-hydraulic push rod three-way dispensing valves, when stopped at any position during use, make it impossible for operators to determine the opening of the three-way dispensing valve, resulting in the inability to constantly monitor the amount of material discharged from the outlets on both sides of the three-way dispensing valve. Therefore, a seven-position, quantitative electro-hydraulic push rod three-way dispensing valve is needed to solve this existing problem. Utility Model Content

[0003] The utility model aims to provide a seven-limit quantitative electro-hydraulic push rod three-way distributing valve. During use, the operator can determine the opening of the three-way distributing valve. The structure is simple and easy to implement.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0005] A seven-limit quantitative electro-hydraulic push rod three-way dispensing valve, including a three-way groove shell, the three-way groove shell includes a feed port and a discharge port symmetrically arranged on both sides, the inflection points of the discharge ports symmetrically arranged on both sides are connected with a valve plate through a valve shaft, the valve shaft passes through the side wall of the three-way groove shell, one end of the valve shaft is fixedly connected to a transmission mechanism, the transmission mechanism is arranged on one side of the side arm of the three-way groove shell, the other end of the valve shaft is fixedly connected to a limit detection rod, the limit detection rod is arranged on the other side of the side arm of the three-way groove shell, the transmission mechanism drives the limit detection rod and the valve plate to rotate synchronously through the valve shaft, seven limit switches are arranged on the other side of the side arm of the three-way groove shell, and the seven limit switches are evenly distributed within the rotation stroke of the limit detection rod.

[0006] The rotation stroke of the limit detection rod is 90°, the angle between adjacent limit switches is 15°, and the limit detection rod is used to detect the position of the corresponding limit switch.

[0007] The transmission mechanism includes an electro-hydraulic push rod and a connecting rod. One end of the connecting rod is fixedly connected to the valve shaft, and the other end of the connecting rod is movably connected to the electro-hydraulic push rod. The movement of the electro-hydraulic push rod drives the connecting rod, and the connecting rod drives the valve shaft to rotate.

[0008] The transmission mechanism also includes a push rod support seat, the push rod support seat is fixedly connected to the three-way groove shell, and the electro-hydraulic push rod is movably connected to the push rod support seat.

[0009] The transmission mechanism, the limit detection rod and the seven limit switches are all arranged outside the three-way groove shell.

[0010] It also includes a PLC, which includes a CPU, a digital input module, and an HMI human-machine interaction screen. The seven limit switches are respectively connected to the digital input modules through ports, the CPU and the digital input module are connected through ports, and the CPU and the HMI human-machine interaction screen are connected through ports.

[0011] The limit switch has an indicator light.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The transmission mechanism drives the limit detection rod and the valve plate to rotate synchronously through the valve shaft. The limit detection rod rotates 90 degrees. Seven limit switches are set on the side arm of the three-way groove shell. The seven limit switches are evenly distributed within the rotation range of the limit detection rod. The angle between adjacent limit switches is 15 degrees. The limit detection rod is used to detect the position of the corresponding limit switch. Since the limit detection rod and the valve plate rotate synchronously, the valve plate opening is divided into 6 parts, which can determine the opening of the three-way dispensing valve. The structure is simple and easy to implement.

[0014] 2. After the operator selects the working position corresponding to the limit switch on the HMI human-machine interaction screen, the valve plate rotates toward the discharge port, and the limit detection rod rotates synchronously. When the limit detection rod detects the limit switch, the electro-hydraulic push rod stops and the indicator light on the corresponding limit switch lights up. The limit switch is connected to the digital input module, and the CPU module is connected to the HMI human-machine interaction screen. The operator can check the status information of the limit switch, that is, the valve plate status, at any time on the HMI human-machine interaction screen or on site. The operation is simple and maintenance is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of a seven-position quantitative electro-hydraulic push rod three-way dispensing valve.

[0016] Figure 2 This is a top view of a seven-position quantitative electro-hydraulic push rod three-way dispensing valve.

[0017] Figure 3 This is the rear view of a seven-position quantitative electro-hydraulic push rod three-way dispensing valve.

[0018] Figure 4 This is a distribution diagram of the limit switches of a seven-position quantitative electro-hydraulic push rod three-way dispensing valve.

[0019] In the figure: 1- three-way groove housing 2- electro-hydraulic push rod 3- push rod support seat 4- connecting rod 5- valve shaft 11- limit switch 12- limit detection rod 21- valve plate 31- cable 32- indicator light. DETAILED DESCRIPTION

[0020] The present invention will be described in detail below with reference to the accompanying drawings. However, it should be noted that the implementation of the present invention is not limited to the following embodiments.

[0021] The following examples are implemented under the premise of the technical solution of the present utility model, and provide detailed implementation methods and specific operating processes, but the scope of protection of the present utility model is not limited to the following examples. The methods used in the following examples are conventional methods unless otherwise specified.

[0022] [Example 1]

[0023] A seven-limit quantitative electro-hydraulic push rod 2 three-way dispensing valve, including a three-way groove shell 1, the three-way groove shell 1 includes a feed port 2 and a discharge port symmetrically arranged on both sides, a valve plate 21 is arranged inside the three-way groove shell 1, and is used for dividing and quantifying the internal material. Because the valve plate rotates synchronously with the valve shaft, the position where the valve plate stops is the opening ratio of the discharge port 1 and the discharge port 2 inside the three-way groove shell, that is, the discharge ratio of the material. The inflection point of the discharge port symmetrically arranged on both sides is connected to the valve plate 21 through the valve shaft 5, and the valve shaft 5 passes through the side of the three-way groove shell 1. Wall, the transmission mechanism is arranged on one side of the outer arm of the three-way groove shell 1, the transmission mechanism includes an electro-hydraulic push rod 2, a connecting rod 4, and a push rod support seat 3. One end of the valve shaft 5 is fixedly connected to one end of the connecting rod 4, and the other end of the connecting rod 4 is movably connected to the electro-hydraulic push rod 2. The movement of the electro-hydraulic push rod 2 drives the connecting rod 4, and the connecting rod 4 drives the valve shaft 5 to rotate. The valve shaft 5 drives the valve shaft 5 to drive the limit detection rod 12 and the valve plate 21 to rotate synchronously. The push rod support seat 3 is fixedly connected to the three-way groove shell 1, and the electro-hydraulic push rod 2 is movably connected to the push rod support seat 3. The limit detection rod 12 and seven limit switches are newly added equipment after the transformation; the other end of the valve shaft 5 is fixedly connected to the limit detection rod 12, and the limit detection rod 12 is arranged on the other side of the outer arm of the three-way groove shell 1, and seven limit switches are arranged on the other side of the outer arm of the three-way groove shell 1, and the seven limit switches are evenly distributed within the rotation stroke of the limit detection rod 12; the rotation stroke of the limit detection rod 12 is 90°, and the angle between adjacent limit switches is 15°. The limit detection rod 12 is used to detect the position of the corresponding limit switch. Since the limit detection rod 12 and the valve plate 21 rotate synchronously, the opening of the three-way dispensing valve can be determined; the transmission mechanism, the limit detection rod 12, and the seven limit switches are all arranged on the outside of the three-way groove shell 1, and the limit switch is provided with an indicator light 32. The workshop is equipped with a PLC, which includes a digital input module, a CPU module, and an HMI human-machine interaction screen. The digital input module and the CPU module are connected through a port, and the CPU module and the HMI human-machine interaction screen are connected through a port. Each limit switch is connected to the digital input module through a cable 31. Each limit switch has a detection status indicator light 32, and the distance between each limit switch and the limit detection rod 12 is 8 mm.

[0024] Working process:

[0025] When the three-way dispensing valve is working, the electro-hydraulic push rod performs linear reciprocating motion, pushing the connecting rod to rotate, and driving the valve shaft and valve plate to rotate, specifically including: 1) When all the materials are required to enter the discharge port 1, when the working position corresponding to the limit switch 7 is selected on the HMI human-machine interaction screen, the valve plate rotates, and the limit detection rod rotates synchronously. When the limit detection rod detects the limit switch 7, the electro-hydraulic push rod stops moving, that is, completing one movement; 2) When all the materials are required to enter the discharge port 2, when the working position corresponding to the limit switch 1 is selected on the HMI human-machine interaction screen, the valve plate rotates, and the limit detection rod rotates synchronously. When the limit detection rod detects the limit switch 7, the electro-hydraulic push rod stops moving, that is, completing one movement. After detecting the limit switch 1, the electro-hydraulic push rod stops moving, that is, completing one movement; 3) When the material is required to enter the discharge port 1 and the material ratio of the discharge port 2 is 1:5 according to the set ratio, when the working position corresponding to the limit switch 2 is selected on the HMI human-machine interaction screen, the valve plate rotates, and the limit detection rod rotates synchronously. When the limit detection rod detects the limit switch 2, the electro-hydraulic push rod stops moving: 4) When the material is required to enter the discharge port 1 and the material ratio of the discharge port 2 is 1:2 according to the set ratio, when the working position corresponding to the limit switch 3 is selected on the HMI human-machine interaction screen, the valve plate rotates, and the limit detection rod rotates synchronously. When the limit detection rod detects the limit switch 3, the electro-hydraulic push rod stops; 5) When the material is required to enter the discharge port 1 and the material ratio of the discharge port 2 is 1:1 according to the set ratio, when the working position corresponding to the limit switch 4 is selected on the HMI human-machine interaction screen, the valve plate rotates, and the limit detection rod rotates synchronously. When the limit detection rod detects the limit switch 4, the electro-hydraulic push rod stops; 6) When the material is required to enter the discharge port 1 and the material ratio of the discharge port 2 is 2:1 according to the set ratio, when the working position corresponding to the limit switch 5 is selected on the HMI human-machine interaction screen, the valve plate rotates, and the limit detection rod rotates synchronously. When the limit detection rod detects the limit switch 5, the electro-hydraulic push rod stops moving; 7) When the material is required to enter the discharge port 1 and the material ratio of the discharge port 2 is 5:1 according to the set ratio, when the working position corresponding to the limit switch 6 is selected on the HMI human-machine interaction screen, the valve plate rotates, and the limit detection rod rotates synchronously. When the limit detection rod detects the limit switch 6, the electro-hydraulic push rod stops moving; In summary, the valve plate opening is equally divided into 6 parts, that is, the material ratios of the discharge port 1 and the discharge port 2 are 1:5, 1:2, 1:1, 2:1, 5:1, and 0:6 respectively, that is, the material can be distributed according to the corresponding ratio of 0 to 6.

[0026] The transmission mechanism of the utility model drives the limit detection rod and the valve plate to rotate synchronously through the valve shaft. The rotation stroke of the limit detection rod is 90°. Seven limit switches are arranged on the side arm of the three-way groove shell. The seven limit switches are evenly distributed within the rotation stroke of the limit detection rod. The angle between adjacent limit switches is 15°. The limit detection rod is used to detect the position of the corresponding limit switch. Since the limit detection rod and the valve plate rotate synchronously, the valve plate opening is equally divided into 6 parts, so that the opening of the three-way dispensing valve can be determined. The structure is simple and easy to implement. After selecting the working position corresponding to the limit switch, the valve plate rotates toward the discharge port, and the limit detection rod rotates synchronously. When the limit detection rod detects the limit switch, the electro-hydraulic push rod stops moving, and the indicator light on the corresponding limit switch lights up. The limit switch is connected to the digital input module through a port, and the CPU module is connected to the HMI human-computer interaction screen through a communication port. The operator can view the status information of the limit switch, that is, the valve plate status, on the HMI human-computer interaction screen or on site at any time. The operation is simple and maintenance is convenient.

Claims

1. A seven-position quantitative electro-hydraulic push rod three-way dispensing valve, comprising a three-way groove shell, the three-way groove shell including a feed port and a discharge port symmetrically arranged on both sides, characterized in that: The valve plates are connected with valve shafts at the inflection points of the symmetrically arranged discharge ports on both sides. The valve shafts pass through the side walls of the three-way groove shell. One end of the valve shaft is fixedly connected with a transmission mechanism, which is arranged on one side of the three-way groove shell side arm. The other end of the valve shaft is fixedly connected with a limit detection rod, which is arranged on the other side of the three-way groove shell side arm. The transmission mechanism drives the limit detection rod and the valve plate to rotate synchronously through the valve shaft. Seven limit switches are arranged on the other side of the three-way groove shell side arm, and the seven limit switches are evenly distributed within the rotation range of the limit detection rod.

2. The seven-position quantitative electro-hydraulic push rod three-way dispensing valve according to claim 1 is characterized in that: The rotation stroke of the limit detection rod is 90°, the angle between adjacent limit switches is 15°, and the limit detection rod is used to detect the position of the corresponding limit switch.

3. The seven-position quantitative electro-hydraulic push rod three-way dispensing valve according to claim 1, characterized in that: The transmission mechanism includes an electro-hydraulic push rod and a connecting rod. One end of the connecting rod is fixedly connected to the valve shaft, and the other end of the connecting rod is movably connected to the electro-hydraulic push rod. The movement of the electro-hydraulic push rod drives the connecting rod, and the connecting rod drives the valve shaft to rotate.

4. The seven-position quantitative electro-hydraulic push rod three-way dispensing valve according to claim 3, characterized in that: The transmission mechanism further comprises a push rod support seat, the push rod support seat is fixedly connected to the three-way groove shell, and the electro-hydraulic push rod is movably connected to the push rod support seat.

5. The seven-position quantitative electro-hydraulic push rod three-way dispensing valve according to claim 1, characterized in that: The transmission mechanism, the limit detection rod and the seven limit switches are all arranged outside the three-way groove shell.

6. The seven-position quantitative electro-hydraulic push rod three-way dispensing valve according to claim 1, characterized in that: It also includes a PLC, which includes a CPU, a digital input module, and an HMI human-machine interaction screen. The seven limit switches are connected to the digital input modules through ports, the CPU and the digital input module are connected through ports, and the CPU and the HMI human-machine interaction screen are connected through ports.

7. The seven-position quantitative electro-hydraulic push rod three-way dispensing valve according to claim 6, characterized in that: The limit switch has an indicator light.

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