Membrane pump air valve floating ball control device

Abstract

The utility model discloses a diaphragm pump air valve floating ball control device which comprises an air valve for controlling a diaphragm pump main air path to work. An air valve rod for controlling the air valve to be opened and closed is arranged on the air valve; the diaphragm pump air valve floating ball control device further comprises a floating ball control mechanism for controlling the air valve rod to stretch out and draw back to open and close the air valve; the floating ball control mechanism comprises a driving handle hinged to the air valve, and a floating ball assembly is fixedly assembled and connected to the driving handle. The floating ball assembly comprises a floating ball, and the top of the floating ball is fixedly connected with a driving arm for pushing the driving handle to rotate; by means of the mode, the driving handle, the driving arm and the floating ball structure are used for controlling the air valve on the diaphragm pump to be opened and closed in the working process of the diaphragm pump. According to the mode, work of the diaphragm pump does not need to be manually monitored, and the diaphragm pump stops working immediately once the water level drops until the diaphragm pump cannot normally pump water, so that the diaphragm pump is protected, and investment of labor cost in the operation process of the diaphragm pump is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of diaphragm pump control, and in particular relates to a diaphragm pump air valve float control device. Background Art

[0002] A diaphragm pump is a type of pump that uses compressed air as its power source to achieve suction and pressure delivery in the diaphragm chamber of the diaphragm pump.

[0003] During the operation of the diaphragm pump, compressed air enters through the air valve on the main air path. When the diaphragm pump is in operation, the air valve is always in operation. Specifically, in the operation state, the air valve stem that controls the opening or closing of the air valve is retracted into the air valve to keep the air flow channel in the air valve connected. When the air valve stem is extended, the air flow channel in the air valve is in a sealed state, and the air path is blocked.

[0004] When the diaphragm pump is put into water and the water level drops below the diaphragm pump, the water inlet on the diaphragm pump raises the water level, so the diaphragm pump cannot pump water. The diaphragm pump is always in working state at this time, and once the operator forgets to turn off the diaphragm pump, the diaphragm pump will keep working ineffectively. In this state, the service life of the diaphragm pump is greatly reduced because water cannot enter the diaphragm pump.

[0005] Therefore, in the actual working process, the diaphragm pump can only be supervised by operators in turn. Once the water level drops to the point where the diaphragm pump cannot pump, the diaphragm pump is immediately shut down. Obviously, the disadvantages of this method are very obvious, which is reflected in the fact that once the diaphragm pump is continuously operated for a long time, a large amount of human resources are needed to supervise and monitor the work of the diaphragm pump. Utility Model Content

[0006] Based on the above background, the purpose of the utility model is to provide a diaphragm pump air valve float control device.

[0007] In order to achieve the above objectives, the utility model adopts the following technical solutions:

[0008] A diaphragm pump air valve float control device, comprising an air valve for controlling the operation of a main air path of the diaphragm pump;

[0009] The air valve is provided with an air valve stem for controlling the opening and closing of the air valve, and the diaphragm pump air valve float control device also includes a float control mechanism for controlling the extension and retraction of the air valve stem to open and close the air valve;

[0010] The float control mechanism comprises a driving handle hinged on the air valve, and a float assembly is fixedly assembled and connected to the driving handle;

[0011] The float assembly comprises a float, and a driving arm for driving the driving handle to rotate is fixedly connected to the top of the float;

[0012] Under normal water level, the float has upward buoyancy, the driving handle presses against the air valve stem, and compressed air enters the control diaphragm pump through the air valve, and the diaphragm pump works. When the water level drops, the float continues to drop until the air valve stem pulls the driving handle away from the air valve stem, the air valve closes, and the diaphragm pump stops working.

[0013] Preferably, the bottom of the air valve is fixedly connected with a hinge seat, and the inner end of the driving handle is fixedly connected with a pair of hinge ears;

[0014] A hinge shaft is fixedly connected between the hinge ears, and the hinge shaft is hinged on the hinge seat.

[0015] Preferably, the outer end of the driving handle is fixedly connected to a pair of external ear seat plates, a pin rod is hinged between the external ear seat plates, and the driving arm is fixedly connected to the pin rod.

[0016] Preferably, the float and the driving arm are detachably connected via an elastic locking structure.

[0017] Preferably, the elastic locking structure comprises a locking seat fixedly connected to the top of the floating ball, and a locking groove is provided on the locking seat;

[0018] The elastic locking structure also includes a card seat fixedly connected to the bottom position of the driving arm;

[0019] The card seat is locked in the locking groove through a plurality of elastic locking protrusions.

[0020] Preferably, the lock seat is provided with a plurality of lock holes cooperating with the elastic lock protrusions, and the elastic lock protrusions are elastically stuck in the lock holes.

[0021] Preferably, the elastic locking protrusion comprises a curved locking portion and a columnar portion integrally formed with the curved locking portion, and a sliding groove slidably connected to the columnar portion is provided on the clamping seat;

[0022] The inner end of the columnar portion is fixedly connected with a spring, and the spring is fixedly connected in the slide groove.

[0023] Preferably, after the card seat is connected to the locking slot, it is fixed by a pin structure;

[0024] The pin rod structure comprises a polygonal pin rod fixedly connected in the lock seat, and a matching pin groove is provided at the bottom of the lock seat;

[0025] The pin rod is inserted into the pin groove.

[0026] Preferably, the transverse cross-section of the pin rod is a regular hexagon.

[0027] The utility model has the following beneficial effects:

[0028] 1. During operation, under normal water level, the float has buoyancy. Under the action of buoyancy, the driving arm pushes the driving handle upward, and the driving handle presses against the valve stem. Compressed air enters the control diaphragm pump through the valve, and the diaphragm pump works. When the water level drops, the float continues to drop until the valve stem pulls the driving handle away from the valve stem, the valve closes, and the diaphragm pump stops working. Specifically, when the water level drops, the float continues to drop with the water level. During the drop, the float slowly pulls the driving handle downward through the driving arm until the driving handle no longer presses against the valve stem. At this time, the valve stem extends out of the valve and the valve closes.

[0029] The above method can be used to control the opening and closing of the air valve on the diaphragm pump by using the above driving handle, driving arm and floating ball structure during the operation of the diaphragm pump. This method can realize the operation of the diaphragm pump without manual monitoring, and once the water level drops to the point where the diaphragm pump cannot pump water normally, the diaphragm pump will stop working immediately, thus not only protecting the diaphragm pump, but also reducing the investment in labor costs during the operation of the diaphragm pump.

[0030] 2. It is possible to easily replace floats of different types to meet the needs of different air valves. The connection in the above manner is highly stable. The float is not easy to shake after being connected, and the driving arm is highly stable. Therefore, the driving handle is highly stable, and the stability of the valve stem is highly lifted. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0032] Figure 1 It is a schematic diagram of the overall structure in an embodiment of the utility model;

[0033] Figure 2 This is a schematic diagram of the structure of the driving handle in the embodiment of the utility model;

[0034] Figure 3 This is a schematic diagram of the structure of the elastic lock structure in the embodiment of the utility model;

[0035] Figure 4 This is a schematic diagram of the structure of the elastic locking protrusion in the embodiment of the utility model;

[0036] Figure 5 It is a schematic diagram of the structure of the elastic locking protrusion in the locking state in the embodiment of the utility model.

[0037] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0040] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0041] Example 1

[0042] like Figure 1-5 As shown, a diaphragm pump air valve float control device includes an air valve 1 that controls the operation of the main air path of the diaphragm pump. Specifically, the air valve 1 is a conventional air valve 1 used on an existing diaphragm pump, and its main structure includes a valve body and an air valve stem 11 installed on the valve body. The air valve stem 11 is used to control the opening and closing of the air valve 1. Specifically, when the air valve stem 11 is retracted into the valve body, the valve body is in an open state. Under normal circumstances, the air valve stem 11 extends out of the valve body and the air valve 1 is in a closed state.

[0043] In order to control the operation of the diaphragm pump according to the water level during the operation of the diaphragm pump, the following improvements are made:

[0044] The float ball control device of the diaphragm pump air valve 1 also includes a float ball control mechanism 2 for controlling the extension and retraction of the air valve stem 11 to open and close the air valve 1 .

[0045] Specifically, the float control mechanism 2 includes a driving handle 22 hinged on the air valve 1, and the specific hinge method is: the bottom of the air valve 1 is fixedly connected to an articulated seat 21, and the inner end of the driving handle 22 is fixedly connected to a pair of articulated ears; an articulated shaft is fixedly connected between the articulated ears, and the articulated shaft is hinged on the articulated seat 21. At the same time, a float assembly is fixedly assembled and connected to the driving handle 22; the float assembly includes a float 24 (specifically, the float 24 is a sealed sphere with a hollow interior, and the float 24 generates an upward buoyancy when the diaphragm pump is placed in water), and the top of the float 24 is fixedly connected to a driving arm 23 that drives the driving handle 22 to rotate. The specific method is: the outer end of the driving handle 22 is fixedly connected to a pair of external ear seat plates, a pin shaft rod is hinged between the external ear seat plates, and the driving arm 23 is fixedly connected to the pin shaft rod.

[0046] Under normal water level, the float 24 has buoyancy. Under the action of buoyancy, the driving arm 23 pushes the driving handle 22 upward, and the driving handle 22 presses against the air valve stem 11. Compressed air enters the control diaphragm pump through the air valve 1, and the diaphragm pump works. When the water level drops, the float 24 continues to drop to the air valve stem 11 to pull the driving handle 22 away from the air valve stem 11, the air valve 1 is closed, and the diaphragm pump stops working. Specifically, when the water level drops, the float 24 continues to drop with the water level. During the drop, the float 24 slowly pulls the driving handle 22 downward through the driving arm 23 until the driving handle 22 no longer presses against the air valve stem 11. At this time, the air valve stem 11 extends out of the air valve 1 and the air valve 1 is closed.

[0047] Through the above method, the driving handle 22, the driving arm 23, and the floating ball 24 structure are used to control the opening and closing of the air valve 1 on the diaphragm pump during the operation of the diaphragm pump. This method realizes the operation of the diaphragm pump without manual monitoring, and once the water level drops to the point where the diaphragm pump cannot pump water normally, the diaphragm pump immediately stops working, thereby not only protecting the diaphragm pump, but also reducing the investment in labor costs during the operation of the diaphragm pump.

[0048] Example 2

[0049] like Figure 1-5 As shown, this embodiment is based on the structure of the first embodiment, in order to replace the floating ball 24 of different types, such as the floating ball 24 of different sizes. 浮力 =ρVg, therefore, the buoyancy of the float 24 is different due to different volumes, and thus the force of the driving handle 22 to lift the valve stem 11 is different. Different valve models 1 are adapted to different valve stems 11 (the force required to push the valve stem 11 on different valves 1 into the valve 1 to close the valve 1 is different). The float 24 and the driving arm 23 are detachably connected via an elastic locking structure.

[0050] Therefore, the elastic locking structure enables convenient detachable replacement of different floats 24 .

[0051] Specifically, the elastic locking structure includes a locking seat 33 fixedly connected to the top of the floating ball 24, and a locking groove of a columnar structure is provided on the locking seat 33; the corresponding elastic locking structure also includes a disc-shaped clamping seat 31 fixedly connected to the bottom of the driving arm 23. The clamping seat 31 is locked in the locking groove through a plurality of elastic locking protrusions 32.

[0052] Specifically, the lock seat 33 is provided with a plurality of lock holes 331 that cooperate with the elastic lock protrusion 32, and the elastic lock protrusion 32 is elastically clamped in the lock hole 331. The elastic lock protrusion 32 includes a curved lock portion and a columnar portion integrally formed with the curved lock portion, and the clamping seat 31 is provided with a slide groove that is slidably connected to the columnar portion; the inner end of the columnar portion is fixedly connected to a spring 321, and the spring 321 is fixedly connected in the slide groove.

[0053] During operation, when the card holder 31 is pressed into the lock slot, the elastic lock protrusion 32 is compressed and inserted into the slide slot. When the elastic lock protrusion 32 encounters the lock hole 331, the curved lock portion is immediately locked and limited in the lock hole 331 under the action of the spring. When disassembling, the operator presses the curved lock portion, and the curved lock portion withdraws from the lock hole 331, which is convenient for disassembly.

[0054] At the same time, in order to improve the stability of the float 24 and avoid shaking between the float 24 and the drive arm 23 (the float 24 is in motion as the water level changes), the above-mentioned socket 31 is connected to the locking groove and fixed by a pin rod structure.

[0055] Specifically, the pin rod structure includes a polygonal pin rod 34 (specifically a regular hexagon, with a regular hexagonal cross-section) fixedly connected to the lock seat 33, and correspondingly, a matching pin groove (not shown) is provided at the bottom center of the card seat 31. When the card seat 31 is inserted, the pin rod 34 is inserted into the pin groove, and when the pin rod 34 hits the top of the pin groove, the elastic locking protrusion 32 is locked.

[0056] Through the above method, different types of floats 24 can be easily replaced to meet the needs of different air valves 1, and the connection stability of the above method is high. The float 24 is not easy to shake after being connected, and the driving arm 23 has high stability, so the driving handle 22 has high stability, and its stability in lifting the air valve stem 11 is high.

[0057] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A diaphragm pump air valve float control device, comprising an air valve for controlling the operation of a main air path of a diaphragm pump; The gas valve is provided with a gas valve stem for controlling the opening and closing of the gas valve, and is characterized in that: The diaphragm pump air valve float control device also includes a float control mechanism for controlling the air valve stem to extend and retract to open and close the air valve; The float control mechanism comprises a driving handle hinged on the air valve, and a float assembly is fixedly assembled and connected to the driving handle; The float assembly comprises a float, and a driving arm for driving the driving handle to rotate is fixedly connected to the top of the float; Under normal water level, the float has upward buoyancy, the driving handle presses against the air valve stem, and compressed air enters the control diaphragm pump through the air valve, and the diaphragm pump works. When the water level drops, the float continues to drop until the air valve stem pulls the driving handle away from the air valve stem, the air valve is closed, and the diaphragm pump stops working; the bottom of the air valve is fixedly connected with an articulated seat, and the inner end of the driving handle is fixedly connected with a pair of articulated ears; An articulation shaft is fixedly connected between the articulated ears, and the articulation shaft is hinged on the articulation seat; the outer end of the driving handle is fixedly connected to a pair of external ear seat plates, a pin shaft rod is hinged between the external ear seat plates, and the driving arm is fixedly connected to the pin shaft rod.

2. The diaphragm pump air valve float control device according to claim 1, characterized in that: The float ball and the driving arm are detachably connected via an elastic locking structure.

3. The diaphragm pump air valve float control device according to claim 2, characterized in that: The elastic lock structure comprises a lock seat fixedly connected to the top of the float, and a lock groove is provided on the lock seat; The elastic locking structure also includes a card seat fixedly connected to the bottom position of the driving arm; The card seat is locked in the locking groove through a plurality of elastic locking protrusions.

4. The diaphragm pump air valve float control device according to claim 3, characterized in that: The lock seat is provided with a plurality of lock holes matched with the elastic lock protrusions, and the elastic lock protrusions are elastically clamped in the lock holes.

5. The diaphragm pump air valve float control device according to claim 3, characterized in that: The elastic locking protrusion comprises a curved locking portion and a columnar portion integrally formed with the curved locking portion, and the clamping seat is provided with a sliding groove slidably connected to the columnar portion; The inner end of the columnar portion is fixedly connected with a spring, and the spring is fixedly connected in the slide groove.

6. The diaphragm pump air valve float control device according to claim 5, characterized in that: After the card holder is connected to the lock slot, it is fixed by a pin structure; The pin rod structure comprises a polygonal pin rod fixedly connected in the lock seat, and a matching pin groove is provided at the bottom of the lock seat; The polygonal pin rod is inserted into the pin groove.

7. The diaphragm pump air valve float control device according to claim 6, characterized in that: The cross-sectional shape of the polygonal pin rod is a regular hexagon.

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