Electric air ball valve

Abstract

The utility model discloses an electric type air ball valve which comprises an air ball valve body, the air ball valve body comprises a handle fixedly arranged on a valve rod in a sleeved mode, the valve rod is connected with an electric control type active rotating mechanism, the electric control type active rotating mechanism comprises an installation base, an installation groove, a sliding groove and a support are arranged on the installation base, and an execution electric cylinder is arranged in the installation groove. A sliding rack is arranged in the sliding groove, and one end of the rack is connected with a piston rod of the execution electric cylinder. The rack is meshed with a gear, and a gear shaft of the gear is coaxially connected with the valve rod through a coupler. Two sets of photoelectric switches are arranged at the stroke end point where the rack slides on the support, the photoelectric switches are connected to a control panel, two control buttons and corresponding indicator lamps are arranged on the control panel, the control buttons are connected with the execution electric cylinder, and the two control buttons control stretching or retracting of the piston rod respectively. And the control panel is provided with a counter for sensing and counting the two groups of photoelectric switches. The electric air ball valve is convenient, fast and accurate to operate, high in cost performance, stable to use and long in service life.

Description

Technical Field

[0001] The utility model relates to an air valve, in particular to an electric air ball valve. Background Art

[0002] An air ball valve is installed at the top of a tank container or a tank truck to ensure the sealing during the transportation of the tank container or the tank truck and the normal air exchange during the unloading process, thereby improving the use safety of the tank container or the tank truck.

[0003] Currently, most of the widely used air ball valves on the market are air ball valves with a manually operated handle or remotely linked manually operated air ball valves. The existing manual or remotely linked operation methods have certain limitations. The former requires the operator to climb to the top of the tank to open and close the valve, and the latter uses a push-pull flexible shaft to manually open and close the air ball valve at the bottom of the tank container.

[0004] The patent document with the publication number CN209839300U and the publication date of December 24, 2019 discloses a manually operated multi-functional air valve. As Figure 1 shown, the air valve includes an air valve main body A1, a handle A2 is arranged at the front end of the air valve main body A1, and further includes a base A3, a gravity hook A4 and a hook seat A6. The air valve main body A1 is arranged at the top end of the base 3, the rear end of the hook seat A6 is connected to the right front part of the base 3, the gravity hook A4 is hinged to the handle 2, and the gravity hook A4 is engaged with the hook seat A6. It can prevent the handle from opening by itself under other external forces or severe vibrations, but it requires the operator to climb to the top of the tank to open and close the valve. The operator has certain risks and the operation is very inconvenient during the process of getting on and off the tank body.

[0005] The patent document with the publication number CN210735129U and the publication date of June 12, 2020 discloses a container valve for linkage. As Figure 2As shown in the figure, the interlocking container valve includes an air valve B1 and a bottom discharge valve B5. A dust cover B3 of the air valve is fixedly connected to the upper surface of the air valve B1. An adjustable handle B2 of the gas phase valve is fixedly connected to the outer wall of the air valve B1. A power output adjustable handle B6 is fixedly connected to the top of the bottom discharge valve B5. A valve rod is fixedly connected between the power output adjustable handle B6 and the bottom discharge valve B5. An adjustable connecting bracket B7 is fixedly connected to the top of the power output adjustable handle B6. A push-pull flexible shaft B4 is fixedly connected between the adjustable handle B2 of the gas phase valve and the adjustable connecting bracket B7. Through this interlocking system, the problem that the container is damaged due to the air valve or the dust cover of the air valve not being opened during the loading and unloading of the container can be solved. Although the operator does not need to climb the tank body, the switching resistance is large, the service life of the remote control device is limited to a certain extent, and the maintenance difficulty is relatively high.

[0006] In view of the problems of inconvenient manual operation or limited service life of remote operation, the air valve is improved to develop an air valve that is convenient, fast, accurate, cost-effective, stable in use, and has a longer service life. Utility Model Content

[0007] In view of the above-mentioned prior art, the present utility model provides an electric air ball valve, which is convenient, fast, accurate, cost-effective, stable in use, and has a longer service life.

[0008] To solve the above technical problems, an electric air ball valve proposed by the present utility model includes an air ball valve. The air ball valve includes a handle sleeved and fixed on a valve rod. The valve rod is connected to an electronically controlled active rotation mechanism. The electronically controlled active rotation mechanism includes a mounting seat. An installation groove, a sliding groove and a bracket are provided on the mounting seat. An actuating electric cylinder is provided in the installation groove. A sliding rack is provided in the sliding groove. One end of the rack is connected to the piston rod of the actuating electric cylinder. When the actuating electric cylinder works, the piston rod drives the rack to slide in the sliding groove. The rack meshes with a gear. The gear shaft of the gear is coaxially connected to the valve rod through a coupling. Two groups of photoelectric switches are provided on the bracket at the stroke end points where the rack slides. The photoelectric switches are connected to a control panel. Two control buttons and corresponding indicator lights are provided on the control panel. The control buttons are connected to the actuating electric cylinder. The two control buttons respectively control the extension or retraction of the piston rod. The control panel is provided with a counter for counting the induction of the two groups of photoelectric switches.

[0009] Further, in the electric air ball valve of the present utility model:

[0010] A dust cover is provided at the top of the air ball valve, a base is provided at the bottom of the air ball valve, and the mounting seat is fixed to the base.

[0011] The actuator electric cylinder is fixed in the mounting groove of the mounting seat through a pressing plate and a fixing member.

[0012] One end of the coupling is sleeved on the valve stem, and the other end of the coupling is sleeved on the gear shaft. The coupling is key-connected to the valve stem and the gear shaft, and is tightened by two sets of jack screws respectively.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model discloses an electric air ball valve, wherein the air ball valve part is installed on the top of the tank body, and the control panel is installed in the cab or other easily operable positions, thereby realizing remote control of the air ball valve.

[0015] The installation between the electrically-controlled active rotating mechanism and the air ball valve in the utility model is very convenient. When improving the existing air ball valve, it is only necessary to install the electrically-controlled active rotating mechanism. That is, the two sets of bolts on the side of the air ball valve need to be removed, and the whole set of electrically-controlled active rotating mechanism needs to be installed. The mounting seat and the air ball valve can be fixed on the tank at the same time, thereby improving convenience and safety.

[0016] The electrically controlled active rotating mechanism in the utility model adopts electrical control and photoelectric position sensing to jointly monitor the status of the rack, handle, valve stem and valve ball. The operator controls the corresponding mechanism action through the operation button on the control panel. Since the photoelectric switch does not participate in feedback control, the corresponding indicator light displays the mechanism action after the operation button is pressed, and the switch position is fed back only after the electrical signal of the electric cylinder and the mechanical mechanism detected by the corresponding photoelectric switch move to the corresponding position. If the operation button is pressed during operation but the photoelectric switch cannot sense the position change (for example, the indicator light is on or off, or the indicator light shows different colors), it is necessary to check the can, so as to avoid the accident of the can body being sucked and deflated, and further improve safety.

[0017] The utility model is provided with a counter, which can count the sensing times of the two groups of photoelectric switches, so that the user can grasp the switching times of the air ball valve at any time and perform maintenance in time according to the use and maintenance manual. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a manually operated air valve in the prior art;

[0019] Figure 2 It is a structural schematic diagram of a linkage-operated air valve in the prior art;

[0020] Figure 3-1 It is a structural schematic diagram of the utility model electric air ball valve;

[0021] Figure 3-2 is Figure 3-1 a partial structural explosion diagram of the shown electric air ball valve;

[0022] In the figure:

[0023] 1 - air ball valve, 2 - dust cover, 3 - handle, 4 - coupling

[0024] 5 - set screw, 6 - input shaft, 7 - gear, 8 - rack

[0025] 9 - actuating electric cylinder, 10 - bracket, 11 - photoelectric switch, 12 - pressing plate

[0026] 13 - control panel, 14 - counter, 15 - indicator light, 16 - operation button

[0027] 17 - mounting seat Specific implementation manners

[0028] The following further describes the present utility model in conjunction with the accompanying drawings and specific embodiments, but the following embodiments are by no means any limitation to the present utility model.

[0029] An electric air ball valve proposed by the present utility model, as Figure 3-1 and Figure 3-2 shown, includes an air ball valve 1. A dust cover 2 is provided at the top of the air ball valve 1, and the dust cover 2 is of a dust-proof and non-sealed structure. A base is provided at the bottom of the air ball valve 1. The air ball valve 1 includes a handle 3 sleeved and fixed on the valve stem, and the valve stem is connected with an electric-controlled active rotation mechanism.

[0030] The electric-controlled active rotation mechanism includes a mounting seat 17. The mounting seat 17 is fixed to the base of the air ball valve 1, and an installation groove, a sliding groove and a bracket 10 are provided on the mounting seat 17.

[0031] An actuating electric cylinder 9 is provided in the installation groove. The actuating electric cylinder 9 is fixed in the installation groove of the mounting seat 17 through a pressing plate 12 and a bolt fixing member. A sliding rack 8 is provided in the sliding groove. One end of the rack 8 is connected with the piston rod of the actuating electric cylinder 9. When the actuating electric cylinder 9 works, the piston rod drives the rack 8 to slide in the sliding groove. The rack 8 meshes with a gear 7, and the gear shaft 6 of the gear 7 is coaxially connected with the valve stem through a coupling 4.

[0032] One end of the coupling 4 is sleeved on the valve stem, and the other end of the coupling 4 is sleeved on the gear shaft 6. The coupling 4 is in key connection with both the valve stem and the gear shaft 6 and is respectively tightened by two groups of set screws 5.

[0033] Two sets of photoelectric switches 11 are provided at the stroke endpoints of the bracket 10 where it slides with the rack 8. The photoelectric switches 11 are connected to the control panel 13. Two control buttons 16 and corresponding indicator lights 15 are arranged on the control panel 13. The control buttons 16 are connected to the actuating electric cylinder 9. The two control buttons 16 respectively control the extension or retraction of the piston rod. The control panel 13 is provided with a counter 14 for counting the induction of the two sets of photoelectric switches 11, so as to know the number of times the air ball valve 1 is opened and closed, facilitating timely maintenance.

[0034] The air ball valve 1 is installed at the top of the tank body, and the control panel 13 is installed in the cab or other easily operable positions. As shown in Figure 3, the air ball valve 1 is in the closed position. At this time, after the photoelectric switch 11 in the closed position senses the position of the rack 8, it will control the indicator light in the closed position to light up. When it is necessary to open the air ball valve 1, pressing the open button through the control panel 13 will control the piston rod of the actuating electric cylinder 9 to extend, thereby driving the rack 8 to slide backward. At the same time, under the meshing action of the gear / rack, the gear 7, the gear shaft 6, the coupling 4, the valve stem, the handle, and the valve ball will be driven to rotate synchronously until the handle swings forward 90 degrees and then the actuating electric cylinder 9 stops. At this time, after the photoelectric switch in the open position senses the position of the rack 8, it will control the indicator light in the open position to light up, and the air ball valve 1 is in the open position; when it is necessary to close the air ball valve 1, pressing the close button through the control panel 13 can control the actuating electric cylinder 9 to retract the piston rod to drive the handle to swing backward 90 degrees to close the air ball valve 1, thereby realizing the remote control of the air ball valve. The handle is still retained in the electric air ball valve of the present invention mainly to facilitate manual control when the electric actuating component has problems. In addition, the electric actuating process of the present invention does not require programming. After the circuit is connected and operated by the operator, the control can be realized by the functions of each component itself.

[0035] For the improvement of the existing ordinary air ball valve, the customer can choose and install whether an electric control mechanism is needed. For example, if the customer purchases a remotely electrically controlled air ball valve or improves the existing air ball valve of the tank, only a set of electrically controlled active rotation mechanism needs to be installed. It is more flexible and changeable. That is, remove the two sets of bolts on the right side of the air ball valve 1, and install the whole set of electrically controlled active rotation mechanism through the coupling, and replace the long stud to fix the mounting seat and the air ball valve on the tank at the same time. Then the air ball valve can be remotely controlled through the control panel, improving the convenience and safety.

[0036] Ordinary actuators display the switch position physically, or directly use the electrical signal of the switch button to display and express the switch position. The former is not convenient for the staff to observe without loading the tank. The rear side is prone to the situation that the air ball valve cannot be opened due to special reasons after the electrical signal is changed. This situation easily causes the staff to misjudge the open and closed state of the air ball valve, resulting in accidents of tank unloading and deflation, which is less safe. The utility model adopts the method of jointly monitoring the state of the rack 8, handle 3, valve stem and valve ball by electric control and photoelectric position sensing. The switch position will only be fed back after the electric cylinder 9 gives an electrical signal and the corresponding photoelectric switch detects that the mechanical mechanism moves to the corresponding position. If the operation button is pressed but the photoelectric switch cannot sense the position change, the tank needs to be checked to avoid accidents of tank deflation, further improving safety.

[0037] The utility model is provided with a counter, which can count the induction times of the two groups of photoelectric switches, so that the user can observe the switching times of the air ball valve conveniently and perform maintenance in time according to the use and maintenance manual.

[0038] Although the utility model has been described above in conjunction with the accompanying drawings, the utility model is not limited to the above-mentioned specific embodiments, which are merely illustrative rather than restrictive. Under the guidance of the utility model, ordinary technicians in this field can make many improvements and changes without departing from the purpose of the utility model, all of which are within the protection of the utility model.

Claims

1. An electric air ball valve, comprising an air ball valve (1), wherein the air ball valve (1) comprises a handle (3) mounted on a valve stem, characterized in that: The valve stem is connected to an electrically controlled active rotating mechanism. The electrically controlled active rotating mechanism comprises a mounting seat (17), the mounting seat (17) being provided with a mounting groove, a sliding groove and a bracket (10), an actuating electric cylinder (9) being provided in the mounting groove, a sliding rack (8) being provided in the sliding groove, one end of the rack (8) being connected to a piston rod of the actuating electric cylinder (9), and when the actuating electric cylinder (9) is working, the piston rod with the rack (8) slides in the sliding groove; The rack (8) is meshed with a gear (7), and the gear shaft (6) of the gear (7) is coaxially connected to the valve stem via a coupling (4); The bracket (10) is provided with two groups of photoelectric switches (11) at the end points of the travel that slides with the rack (8); the photoelectric switches (11) are connected to a control panel (13); the control panel (13) is provided with two control buttons (16) and corresponding indicator lights (15); the control buttons (16) are connected to the actuator electric cylinder (9); the two control buttons (16) respectively control the extension or retraction of the piston rod; the control panel (13) is provided with a counter (14) for sensing and counting the two groups of photoelectric switches (11).

2. The electric air ball valve according to claim 1, characterized in that: The top of the air ball valve (1) is provided with a dust cover (2), the bottom of the air ball valve (1) is provided with a base, and the mounting seat (17) is fixed to the base.

3. The electric air ball valve according to claim 1, characterized in that: The actuator electric cylinder (9) is fixed in the mounting groove of the mounting seat (17) via a pressing plate (12) and a fixing member.

4. The electric air ball valve according to claim 1, characterized in that: One end of the coupling (4) is sleeved on the valve stem, and the other end of the coupling (4) is sleeved on the gear shaft (6). The coupling (4) is key-connected to the valve stem and the gear shaft (6) and is tightened by two sets of jack screws (5).

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