Deep well water supply decompression device

Abstract

The utility model discloses a deep well water supply decompression device, and belongs to the technical field of water supply decompression. The deep well water supply pressure reducing device comprises a valve, a manual executing mechanism and an electric executing mechanism. The valve is arranged on the water supply pipeline and provided with a valve rod. The manual actuating mechanism is in transmission connection with the valve rod, and the electric actuating mechanism is in transmission connection with the valve rod; the electric actuating mechanism comprises a controller, a stepping motor and a transmission shaft, the stepping motor is horizontally arranged, the transmission shaft is vertically arranged, the bottom of the transmission shaft is connected with the valve rod, and a first worm and gear set in transmission connection with the output end of the stepping motor is arranged on the upper portion of the transmission shaft; a base is arranged above the transmission shaft, a microswitch and a cam are oppositely arranged on the base, the cam is coaxially connected with the transmission shaft, the microswitch is electrically connected with a controller, and the controller is electrically connected with the stepping motor. The running state of the valve can be monitored, and faults caused by overuse are avoided; the problem that an existing motor control valve is prone to damage is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of water supply pressure reduction, in particular to a deep well water supply pressure reduction device. Background Art

[0002] The statements herein merely provide background art related to the present invention and do not necessarily constitute prior art.

[0003] The water used for grouting, cooling and spraying in coal mines needs to be supplied from the ground. The water supply (grouting) pressure of mines with a depth of more than 1,000 meters can reach 10MPa, which is much higher than the 1-1.5MPa water supply pressure and 1.5-2.5MPa grouting pressure required underground. Excessive water supply (grouting) pressure will seriously damage pipelines and valves.

[0004] For a long time, deep well water supply (grouting) has mostly used pressure reducing valves to reduce pressure, but the pressure reducing valves are easy to damage and have poor reliability, which seriously affects the efficiency of underground work. In the prior art, a motor is used to adjust the valve opening and thus adjust the liquid level in the underground pipeline. The controller sends start and stop commands to the motor according to the pressure of the liquid in the pipeline to control the flow of the pipeline, so that the underground water supply (grouting) is stably maintained at a fixed pressure value.

[0005] However, the existing valve regulation focuses on monitoring the liquid pressure in the pipeline, while ignoring the switch state of the valve. When the valve is fully opened, if the motor is still controlled to work, it is easy to cause damage to the valve. Utility Model Content

[0006] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a deep well water supply pressure reducing device, which can monitor the opening state of the valve to avoid damage to the valve caused by excessive use, thereby affecting the deep well water supply pressure reducing.

[0007] In order to achieve the above purpose, the embodiment of the utility model provides the following technical solutions:

[0008] A deep well water supply pressure reducing device comprises a valve, a manual actuator and an electric actuator; the valve is arranged on a water supply pipeline, and a valve stem is arranged on the valve; the manual actuator is drivingly connected to the valve stem, and the electric actuator is drivingly connected to the valve stem;

[0009] Wherein, the electric actuator includes a controller, a stepper motor and a transmission shaft, the stepper motor is horizontally arranged, the transmission shaft is vertically arranged, the bottom of the transmission shaft is connected to the valve stem, the upper part of the transmission shaft is provided with a first worm gear group, and the first worm gear group is transmission-connected to the output end of the stepper motor;

[0010] A base is arranged above the transmission shaft, a micro switch and a cam are arranged on the base relatively to each other, the cam is coaxially connected with the transmission shaft, the micro switch is electrically connected with the controller, and the controller is electrically connected with the stepping motor.

[0011] In some embodiments, the first worm gear set includes a first worm gear and a first worm, and the output end of the stepper motor is provided with a driving gear;

[0012] A driven gear is sleeved on one end of the first worm, and the driving gear is meshed with the driven gear; the first worm wheel is sleeved on the transmission shaft, and the first worm wheel is drivingly connected to the first worm.

[0013] In some embodiments, the manual actuator includes a handwheel, a second worm gear and a second worm, and the second worm gear is sleeved on the transmission shaft;

[0014] The hand wheel is connected to one end of the second worm, and the second worm is drivingly connected to the second worm wheel.

[0015] In some embodiments, a crank handle is provided on the hand wheel.

[0016] In some embodiments, a housing is further included, the stepper motor is disposed on a side wall of the housing, and the first worm gear set and the transmission shaft are disposed inside the housing.

[0017] In some embodiments, a flange is provided between the housing and the valve, and the flange is sleeved on the valve stem.

[0018] In some embodiments, there are multiple micro switches, and the multiple micro switches are arranged in sequence from top to bottom; there are multiple cams, and the multiple cams are arranged in sequence from top to bottom.

[0019] In some embodiments, a mechanical instrument panel is further included, wherein a pointer of the mechanical instrument panel is coaxially connected to the transmission shaft.

[0020] In some embodiments, a pressure sensor is further included. The pressure sensor is disposed inside the water supply pipe and is electrically connected to the controller.

[0021] In some embodiments, the controller is a PLC controller.

[0022] One or more technical solutions provided in the embodiments of the present utility model have at least the following technical effects or advantages:

[0023] 1. The technical solution provided by the utility model is to set a limit switch in the electric actuator. When the valve is fully opened and closed, the limit switch generates an electrical signal to the controller, and the controller controls the stepper motor to stop working, thereby preventing excessive use of the valve and malfunction, improving the overall reliability of the device, and ensuring the normal use of deep well water supply pressure reduction.

[0024] 2. The technical solution provided by the utility model has both an electric actuator and a manual actuator for valve switching, which serve as backup solutions for each other to avoid damage to any structure affecting the normal use of the device, and thus when reducing the pressure of deep well water supply, any method can be selected for pressure reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0026] Figure 1 It is a structural schematic diagram provided by an embodiment of the utility model;

[0027] Figure 2 It is a cross-sectional schematic diagram provided by an embodiment of the utility model;

[0028] In the figure: 1. electric actuator; 2. hand wheel; 3. flange; 4. water supply pipe; 5. valve; 6. stepper motor; 7. mechanical instrument panel; 8. limit switch; 9. micro switch; 10. contact; 11. base; 12. first worm gear; 13. second worm gear; 14. second worm; 15. valve stem; 16. transmission shaft; 17. driving gear; 18. driven gear; 19. first worm; 20. cam; 21. glass observation window.

[0029] In order to show the positions of various parts, the distances or sizes between them are exaggerated and the schematic diagram is for reference only. DETAILED DESCRIPTION

[0030] It should be noted that the following detailed descriptions are all illustrative and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0031] As introduced in the background technology, the improvement of the existing pressure reducing valve for deep well water supply (grouting) is mostly focused on the improvement of the actuator, and the monitoring of the opening and closing state of the valve 5 is ignored. In order to solve the above technical problems, the utility model proposes a deep well water supply pressure reducing device, which uses a limit switch 8 composed of a micro switch 9 and a cam 20 to monitor the opening and closing state of the valve 5.

[0032] Combination Figure 1-Figure 2 The deep well water supply pressure reducing device includes a pressure sensor, a housing, a valve 5, a manual actuator and an electric actuator 1. The electric actuator 1 includes a controller, a stepper motor 6 and a transmission shaft 16. The manual actuator includes a handwheel 2, a second worm gear 13 and a second worm 14. The pressure sensor is installed inside the water supply pipe 4 to collect pressure information of the water supply pipe 4. The pressure sensor is electrically connected to the controller, and the controller is electrically connected to the stepper motor 6.

[0033] The valve 5 is installed on the water supply pipe 4, and a valve stem 15 is fixed on the valve 5; the housing is located above the valve 5, and the bottom of the housing is connected to the valve 5 through the flange 3, and the top end of the valve stem 15 passes through the flange 3 and is located inside the housing; the transmission shaft 16 is vertically installed inside the housing, located in the middle of the housing, and its bottom end is sleeved on the top end of the valve stem 15, and is fixedly connected to the valve stem 15. The stepper motor 6 is horizontally fixed to a side wall of the housing, and its output end passes through the side wall of the housing and is connected to a longitudinally arranged driving gear 17; the first worm gear 12 is sleeved on the upper part of the transmission shaft 16, and the first worm 19 is horizontally arranged inside the housing, one end of which is sleeved with a longitudinally arranged driven gear 18, and the other end of which is transmission-connected to the first worm gear 12, and the driving gear 17 and the driven gear 18 are meshed.

[0034] A base 11 is horizontally installed on the top of the transmission shaft 16, and four relatively arranged micro switches 9 and cams 20 are installed on the base 11. The four micro switches 9 are arranged in sequence from top to bottom, and the four cams 20 are arranged in sequence from top to bottom. Each cam 20 is coaxially connected to the transmission shaft 16 through a connecting shaft, wherein the first cam 20 and the second cam 20 are a group, and the angles of the two are the same. When the group of cams 20 contacts the corresponding first micro switch 9 and the second micro switch 9, it indicates that "the valve 5 is fully opened"; the third cam 20 and the fourth cam 20 are a group, and the angles of the two are the same. When the group of cams 20 contacts the corresponding third micro switch 9 and the fourth micro switch 9, it indicates that "the valve 5 is fully closed".

[0035] The angle difference between the second group of cams 20 and the first group of cams 20 is 90 degrees, representing the opening range of the valve 5; illustratively, if the micro switch 9 is in the closed position of the valve 5, the initial position of the first group of cams 20 is in the fully open position of the valve 5, and the initial position of the second group of cams 20 is in the fully closed position of the valve 5; when the valve 5 is fully closed, the valve stem 15 rotates through the transmission shaft 16 to drive the first group of cams 20 to rotate until the valve 5 is fully closed, the first group of cams 20 contacts the corresponding contact 10 of the micro switch 9, the micro switch 9 closes and sends an electrical signal representing "fully closed" to the controller; when the valve 5 is fully opened, the valve stem 15 rotates through the transmission shaft 16 to drive the second group of cams 20 to rotate until the valve 5 is fully opened, the second group of cams 20 contacts the corresponding contact 10 of the micro switch 9, the micro switch 9 closes and sends an electrical signal representing "fully opened" to the controller, so that the operator can monitor the switching state of the valve 5 well.

[0036] The handwheel 2 is installed on the other side wall of the shell, and its end extends into the side wall of the shell and is connected to the second worm 14 placed horizontally inside the shell. The second worm wheel 13 is sleeved on the middle part of the transmission shaft 16, and the second worm 14 is transmission-connected to the second worm wheel 13.

[0037] As an implementation mode, in order to facilitate the rotation of the hand wheel 2, a crank handle is installed on the hand wheel 2.

[0038] As an implementation mode, in order to facilitate the user to observe the opening of the valve 5, a mechanical instrument panel 7 is further included, and the pointer of the mechanical instrument panel 7 is coaxially connected with the transmission shaft 16. Since the transmission shaft 16 and the valve stem 15 rotate at the same angle, the opening of the valve 5 can be reflected by the mechanical instrument panel 7. The housing is provided with a glass observation window 21, and the glass observation window 21 is located above the mechanical instrument panel 7. The staff can observe the mechanical instrument panel 7 through the glass observation window 21, and thus understand the opening of the valve 5.

[0039] In this embodiment, the controller is a PLC controller, and the valve 5 is a butterfly valve.

[0040] The working method of this embodiment is as follows:

[0041] When the electric actuator 1 is used to control the valve 5, the specific process is as follows:

[0042] The pressure sensor collects the pressure information in the water supply pipe 4 and transmits it to the PLC controller. The PLC controller receives the pressure information. When the pressure information exceeds the preset threshold in the PLC controller, the PLC controller controls the stepper motor 6 to start. The stepper motor 6 rotates to drive the driving gear 17 to rotate, and then drives the driven gear 18 and the first worm 19 to rotate in the horizontal direction. The first worm 19 drives the first worm wheel 12 and the transmission shaft 16 to rotate in the vertical direction, thereby driving the valve stem 15 to rotate and open the valve 5.

[0043] When the valve 5 is fully opened or closed, the corresponding cam 20 will contact the contact 10 of the micro switch 9. At this time, the corresponding micro switch 9 is closed and sends an electrical signal to the PLC controller, and the PLC controller controls the stepper motor 6 to close.

[0044] When the manual actuator is used to control valve 5, the specific process is as follows:

[0045] The hand wheel 2 is turned, and the hand wheel 2 drives the second worm 14 to rotate, and then drives the second worm wheel 13 and the transmission shaft 16 to rotate, so as to drive the valve stem 15.

[0046] Although the above describes the specific implementation methods of the utility model in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. A deep well water supply pressure reducing device, characterized in that: It comprises a valve, a manual actuator and an electric actuator; the valve is arranged on a water supply pipeline, and a valve stem is arranged on the valve; the manual actuator is in driving connection with the valve stem, and the electric actuator is in driving connection with the valve stem; Wherein, the electric actuator includes a controller, a stepper motor and a transmission shaft, the stepper motor is horizontally arranged, the transmission shaft is vertically arranged, the bottom of the transmission shaft is connected to the valve stem, the upper part of the transmission shaft is provided with a first worm gear group, and the first worm gear group is transmission-connected to the output end of the stepper motor; A base is arranged above the transmission shaft, a micro switch and a cam are arranged on the base relatively to each other, the cam is coaxially connected with the transmission shaft, the micro switch is electrically connected with the controller, and the controller is electrically connected with the stepping motor.

2. The deep well water supply pressure reducing device according to claim 1, characterized in that: The first worm gear set includes a first worm gear and a first worm, and the output end of the stepping motor is provided with a driving gear; A driven gear is sleeved on one end of the first worm, and the driving gear is meshed with the driven gear; the first worm wheel is sleeved on the transmission shaft, and the first worm wheel is drivingly connected to the first worm.

3. The deep well water supply pressure reducing device according to claim 1, characterized in that: The manual actuator comprises a hand wheel, a second worm gear and a second worm, wherein the second worm gear is sleeved on the transmission shaft; The hand wheel is connected to one end of the second worm, and the second worm is drivingly connected to the second worm wheel.

4. The deep well water supply pressure reducing device according to claim 3, characterized in that: The hand wheel is provided with a crank handle.

5. The deep well water supply pressure reducing device according to claim 1, characterized in that: It also includes a shell, the stepper motor is arranged on the side wall of the shell, and the first worm gear set and the transmission shaft are arranged inside the shell.

6. The deep well water supply pressure reducing device according to claim 5, characterized in that: A flange is arranged between the housing and the valve, and the flange is sleeved on the valve stem.

7. The deep well water supply pressure reducing device according to claim 1, characterized in that: There are multiple micro switches, which are arranged in sequence from top to bottom; there are multiple cams, which are arranged in sequence from top to bottom.

8. The deep well water supply pressure reducing device according to claim 1, characterized in that: It also includes a mechanical instrument panel, a pointer of which is coaxially connected to the transmission shaft.

9. The deep well water supply pressure reducing device according to claim 1, characterized in that: It also includes a pressure sensor, which is arranged inside the water supply pipe and is electrically connected to the controller.

10. The deep well water supply pressure reducing device according to claim 1, characterized in that: The controller is a PLC controller.

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