Control device of pneumatic diaphragm pump

Abstract

The utility model discloses a control device of a pneumatic diaphragm pump. The control device comprises a pneumatic controller, a normally closed pneumatic control valve and the pneumatic diaphragm pump, a reversing valve air port of the pneumatic diaphragm pump is connected with a Z port of the air controller, an A port of the air controller is connected with a signal port of the normally closed air control valve, an A port of the normally closed air control valve is connected with a compressed air inlet of the pneumatic diaphragm pump, and compressed air is introduced into a P port of the normally closed air control valve and a P port of the air controller; the pneumatic diaphragm pump is pneumatically controlled through the combination of the pneumatic controller and the normally closed pneumatic control valve, so that safety control can be carried out in special environments such as dust, flammable and explosive gas and the like, and the functions of controlling the pneumatic diaphragm pump to start and stop, recording the cycle number, presetting the cycle number, accurately controlling the output quantity and the like can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field related to pneumatic diaphragm pump control, in particular to a control device for a pneumatic diaphragm pump. Background Art

[0002] The pneumatic diaphragm pump is a new type of conveying machinery and one of the most innovative pumps in China. Powered by compressed air, it can handle a variety of corrosive liquids. Due to its excellent performance, it has been widely used in daily life. Existing pneumatic diaphragm pumps are controlled by electronic controllers, which can pose safety risks in environments with dust, flammable, or explosive gases. Utility Model Content

[0003] In order to solve the problem in the prior art that the existing pneumatic diaphragm pump is controlled by an electronic controller, but the electronic controller has safety hazards in special environments such as dust, flammable and explosive gases, the utility model provides a control device for a pneumatic diaphragm pump.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0005] The utility model discloses a control device for a pneumatic diaphragm pump, comprising an air controller, a normally closed air control valve and a pneumatic diaphragm pump;

[0006] The reversing valve air port of the pneumatic diaphragm pump is connected to the Z port of the air controller, the A port of the air controller is connected to the signal port of the normally closed air control valve, the A port of the normally closed air control valve is connected to the compressed air inlet of the pneumatic diaphragm pump, and compressed air is introduced into the P port of the normally closed air control valve and the P port of the air controller.

[0007] As a preferred technical solution of the utility model, the pneumatic controller includes a control box, which is equipped with a pneumatic counter, a knob manual valve, a button manual valve, a normally open pneumatic control valve, a four-way connector and a through-plate connector;

[0008] There are three bulkhead joints, which are respectively denoted as bulkhead joint P, bulkhead joint A and bulkhead joint Z;

[0009] The Z port of the pneumatic counter is connected to the through-plate connector Z; the A port of the pneumatic counter is connected to the signal port of the normally open air-controlled valve, the A interface of the normally open air-controlled valve is connected to the through-plate connector A, the Y port of the pneumatic counter is connected to the A port of the button manual valve, the A port of the knob manual valve is connected to the 1 interface of the four-way connector, the 2 interface of the four-way connector is connected to the P port of the pneumatic counter, the 3 interface of the four-way connector is connected to the P port of the button manual valve, and the 4 interface of the four-way connector is connected to the P port of the normally open air-controlled valve.

[0010] As a preferred technical solution of the present invention, the pneumatic counter is provided with a first display port for displaying the number of completed cycles, and a second display port for displaying the preset number of cycles.

[0011] As a preferred technical solution of the present invention, when the number of cycles is equal to a preset number, the P port and the A port of the pneumatic counter are connected.

[0012] As an optimal technical solution of the present invention, when the knob switch on the knob manual valve is closed, there is no pressure input to the P port of the air controller, and at the same time there is no pressure output from the A port of the air controller, the normally closed air control valve connected to the pneumatic diaphragm pump is in a closed state, and the pneumatic diaphragm pump stops working.

[0013] As an optimal technical solution of the present utility model, when the knob switch on the knob manual valve is turned on, when the number of cycles is not equal to the preset number of cycles, there is no pressure output from port A of the pneumatic counter, the normally open air control valve in the air controller is in the open state, and compressed air is output from port A of the air controller, so that the normally closed air control valve connected to the pneumatic diaphragm pump is opened, and the pneumatic diaphragm pump is input with compressed air and starts working.

[0014] The beneficial effects of the utility model are:

[0015] 1. The control device of this pneumatic diaphragm pump uses a combination of an air controller and a normally closed air control valve to pneumatically control the pneumatic diaphragm pump. This allows for safe control in special environments such as dust, flammable and explosive gases, and can also control the start and stop of the pneumatic diaphragm pump, record the number of cycles, pre-set the number of cycles, and accurately control the output.

[0016] 2. The control device of this pneumatic diaphragm pump is provided with a specific air controller, wherein the air controller includes a pneumatic counter, a knob manual valve, a button manual valve, a normally open air control valve, a four-way joint and a through-plate joint. When the knob switch on the knob manual valve is turned on and the number of cycles is not equal to the preset number of cycles, there is no pressure output from port A of the pneumatic counter, the normally open air control valve in the air controller is in an open state, and compressed air is output from port A of the air controller, causing the normally closed air control valve connected to the pneumatic diaphragm pump to open, and the pneumatic diaphragm pump to have compressed air input and start working. When the knob switch on the knob manual valve is turned off, there is no pressure input from port P of the air controller, and at the same time, there is no pressure output from port A of the air controller, the normally closed air control valve connected to the pneumatic diaphragm pump is in a closed state, and the pneumatic diaphragm pump stops working. In the present utility model, since the delivery volume of the pneumatic diaphragm pump in each cycle is certain, the output volume of the diaphragm pump is accurately controlled according to the preset number of cycles. The utility model can remotely control the start and stop of the diaphragm pump in an electricity-free environment, and can accurately control the output of the pneumatic diaphragm pump by pre-setting the number of cycles. The recorded number of diaphragm pump cycles can also be used as a reference for the repair and maintenance of the diaphragm pump, thereby improving the convenience of using the pneumatic diaphragm pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 This is a structural diagram of a control device for a pneumatic diaphragm pump of the utility model;

[0019] Figure 2 This is a structural diagram of an air controller of a control device for a pneumatic diaphragm pump of the utility model;

[0020] Figure 3 The utility model is a front schematic diagram of a pneumatic counter of a control device of a pneumatic diaphragm pump.

[0021] In the figure: 1. Air controller; 101. Control box; 102. Pneumatic counter; 103. Knob manual valve; 104. Push-button manual valve; 105. Normally open air-controlled valve; 106. Four-way connector; 107. First display port; 108. Second display port; 2. Normally closed air-controlled valve; 3. Pneumatic diaphragm pump. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0023] Example: Figure 1 、 Figure 2 and Figure 3 As shown, the utility model is a control device for a pneumatic diaphragm pump, comprising an air controller 1, a normally closed air control valve 2 and a pneumatic diaphragm pump 3;

[0024] The reversing valve air port of the pneumatic diaphragm pump 3 is connected to the Z port of the air controller 1, the A port of the air controller 1 is connected to the signal port of the normally closed air-controlled valve 2, and the A port of the normally closed air-controlled valve 2 is connected to the compressed air inlet of the pneumatic diaphragm pump 3. Compressed air is introduced into the P interface of the normally closed air-controlled valve and the P interface of the air controller 1. This utility model pneumatically controls the pneumatic diaphragm pump 3 through the combination of the air controller 1 and the normally closed air-controlled valve 2, so that it can be safely controlled in special environments such as dust, flammable and explosive gases, and can realize the functions of controlling the pneumatic diaphragm pump 3 to start, stop, record the number of cycles, pre-set the number of cycles and accurately control the output.

[0025] The pneumatic controller 1 includes a control box 101, in which a pneumatic counter 102, a knob manual valve 103, a button manual valve 104, a normally open pneumatic control valve 105, a four-way connector 106 and a through-plate connector are installed;

[0026] There are three bulkhead joints, which are respectively denoted as bulkhead joint P, bulkhead joint A and bulkhead joint Z;

[0027] The Z port of the pneumatic counter 102 is connected to the through-plate connector Z; the A port of the pneumatic counter 102 is connected to the signal port of the normally open air control valve 105, the A port of the normally open air control valve 105 is connected to the through-plate connector A, the Y port of the pneumatic counter 102 is connected to the A port of the button manual valve 104, the A port of the knob manual valve 103 is connected to the 1 port of the four-way connector 106, the 2 port of the four-way connector 106 is connected to the P port of the pneumatic counter 102, and the 3 port of the four-way connector 106 is connected to the . The back port P of the pneumatic counter 102 represents the input port, and A represents the output port. When the number of cycles is equal to the preset number, P and A are connected; Y represents reset, and when there is pressure in Y, the number of cycles in the counter is cleared to zero. Z represents the pulse signal input port. During operation, the reversing valve at one end of the pneumatic diaphragm pump 3 cycles between pressure and no pressure, achieving reciprocating motion. Therefore, connecting the Z port of the pneumatic counter 102 to the reversing valve port with an air pipe can drive the pneumatic counter 102 to achieve counting. Furthermore, the air cavity of the pump head of the pneumatic diaphragm pump 3 also cycles between pressure and no pressure, so the Z port of the pneumatic counter 102 can also be connected to the air cavity of the pneumatic diaphragm pump 3. The Z port of the air controller 1 is connected to the Z port of the pneumatic diaphragm pump. The effects of connecting the ventilation port and the single-side diaphragm inner cavity interface are the same.

[0028] The pneumatic counter 102 is provided with a first display port 107 for displaying the number of completed cycles, and a second display port 108 for displaying the preset number of cycles.

[0029] When the number of cycles is equal to the preset number, the P port and the A port of the pneumatic counter 102 are connected. By setting a specific air controller 1, the air controller 1 includes a pneumatic counter 102, a knob manual valve 103, a button manual valve 104, a normally open air control valve 105, a four-way connector 106 and a plate-through connector.

[0030] Working principle: When the knob switch on the knob manual valve 103 is turned on, and when the number of cycles is not equal to the preset number of cycles, there is no pressure output from port A of the pneumatic counter 102, the normally open air control valve 105 in the air controller 1 is in the open state, and compressed air is output from port A of the air controller 1, causing the normally closed air control valve 2 connected to the pneumatic diaphragm pump 3 to open, and the pneumatic diaphragm pump 3 is input with compressed air and starts working. When the knob switch on the knob manual valve 103 is turned off, there is no pressure input from port P of the air controller 1, and at the same time, there is no pressure output from port A of the air controller 1, the normally closed air control valve 2 connected to the pneumatic diaphragm pump 3 is in the closed state, and the pneumatic diaphragm pump 3 stops working. In the present utility model, since the delivery volume of the pneumatic diaphragm pump 3 in each cycle is fixed, the output volume of the diaphragm pump in one operation is accurately controlled according to the preset number of cycles. The utility model can remotely control the start and stop of the diaphragm pump in an electricity-free environment, and can accurately control the output of the pneumatic diaphragm pump 3 by pre-setting the number of cycles. The recorded diaphragm pump cycle number can also be used as a reference for the maintenance of the diaphragm pump, thereby improving the convenience of using the pneumatic diaphragm pump 3.

[0031] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A control device for a pneumatic diaphragm pump, characterized in that: It comprises an air controller (1), a normally closed air control valve (2) and a pneumatic diaphragm pump (3); The reversing valve air port of the pneumatic diaphragm pump (3) is connected to the Z port of the air controller (1), the A port of the air controller (1) is connected to the signal port of the normally closed air control valve (2), the A port of the normally closed air control valve (2) is connected to the compressed air inlet of the pneumatic diaphragm pump (3), and compressed air is introduced into the P port of the normally closed air control valve and the P port of the air controller (1).

2. A control device for a pneumatic diaphragm pump according to claim 1, characterized in that: The air controller (1) comprises a control box (101), wherein the control box (101) is provided with a pneumatic counter (102), a knob manual valve (103), a button manual valve (104), a normally open air control valve (105), a four-way connector (106) and a through-plate connector; There are three bulkhead joints, which are respectively denoted as bulkhead joint P, bulkhead joint A and bulkhead joint Z; The Z port of the pneumatic counter (102) is connected to the through-plate connector Z; the A port of the pneumatic counter (102) is connected to the signal port of the normally open air control valve (105); the A port of the normally open air control valve (105) is connected to the through-plate connector A; the Y port of the pneumatic counter (102) is connected to the A port of the button manual valve (104); the A port of the knob manual valve (103) is connected to the 1 port of the four-way connector (106); the 2 port of the four-way connector (106) is connected to the P port of the pneumatic counter (102); the 3 port of the four-way connector (106) is connected to the P port of the button manual valve (104); and the 4 port of the four-way connector (106) is connected to the P port of the normally open air control valve (105).

3. A control device for a pneumatic diaphragm pump according to claim 2, characterized in that: The pneumatic counter (102) is provided with a first display port (107) for displaying the number of completed cycles, and a second display port (108) for displaying the preset number of cycles.

4. The control device of a pneumatic diaphragm pump according to claim 2, characterized in that: When the number of cycles is equal to the preset number, the P port and the A port of the pneumatic counter (102) are connected.

5. The control device of a pneumatic diaphragm pump according to claim 2, characterized in that: When the knob switch on the knob manual valve (103) is closed, there is no pressure input to the P port of the air controller (1), and at the same time, there is no pressure output from the A port of the air controller (1), the normally closed air control valve (2) connected to the pneumatic diaphragm pump (3) is in a closed state, and the pneumatic diaphragm pump (3) stops working.

6. The control device of a pneumatic diaphragm pump according to claim 2, characterized in that: When the knob switch on the knob manual valve (103) is turned on and the number of cycles completed is not equal to the preset number of cycles, there is no pressure output from port A of the pneumatic counter (102), the normally open air control valve (105) in the air controller (1) is in an open state, compressed air is output from port A of the air controller (1), and the normally closed air control valve (2) connected to the pneumatic diaphragm pump (3) is opened, and the pneumatic diaphragm pump is input with compressed air and starts working.

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