Air inlet and outlet module for pneumatic diaphragm pump

Abstract

According to the air inlet and outlet module for the pneumatic diaphragm pump, the first output end of an external air source enters the first air inlet channel through the air inlet nozzle and the limiting hole, and the sealing plug in the first air inlet channel is pushed to abut against the air inlet end of the air guide pipe. When the air pressure in the first air inlet channel is too large, the wide end of the sealing plug elastically deforms due to the annular extrusion groove, so that air flow enters the space between the sealing plug and the annular connecting plate through a gap between the wide end of the sealing plug and the inner wall of the air inlet channel, and is discharged into a first air cavity of an external pneumatic diaphragm pump through the first air injection hole. When compressed air is compressed in the second air cavity, a driving piston shaft in the pneumatic diaphragm pump moves, so that the air pressure of the second air cavity in the pneumatic diaphragm pump is increased; and the air enters the second air inlet channel through the second air injection hole, enters the air outlet channel through the air guide pipe in the second air inlet channel, the air leakage through hole in the air guide pipe and the air guide cavity, and is finally discharged through the air outlet nozzle.

Description

Technical Field

[0001] This utility model relates to the field of air inlet and outlet of pneumatic diaphragm pumps, and in particular to air inlet and outlet modules for pneumatic diaphragm pumps. Background Technology

[0002] A pneumatic diaphragm pump is a new type of liquid transfer machine powered by compressed air. The working principle is as follows: high-pressure air alternately compresses and drives the diaphragms on both sides, converting the pressure potential energy of the gas into the kinetic energy of the diaphragms' reciprocating motion; a central connecting rod links the two diaphragms to move synchronously in opposite directions. When one diaphragm is pressurized and discharges material, the one-way valve of its connected chamber opens to discharge material to the outlet, while the other diaphragm is pulled back, creating negative pressure in its chamber and drawing in material. At the end of the stroke, the air distribution mechanism automatically switches the air pressure direction, driving the diaphragm to move in the opposite direction. This cycle repeats continuously, achieving continuous intake and discharge of the medium.

[0003] However, the core structure of a pneumatic diaphragm pump consists of the pump body and the inlet reversing valve. The pump body includes key components such as the diaphragm assembly, small shaft assembly, flow divider, and ball valve seat, which work in conjunction with the air supply pipeline, control valve, pressure gauge, and liquid transfer pipeline. Traditional pneumatic diaphragm pumps, such as the technology protected by the patent application number CN201410367496.6 entitled "Pneumatic Diaphragm Pump," have complex and costly modular structures for air injection and venting. Utility Model Content

[0004] Therefore, it is necessary to provide an air inlet / outlet module for a pneumatic diaphragm pump to address the technical problems of complex and costly module structures for traditional pneumatic diaphragm pumps for air injection and exhaust.

[0005] An air inlet / outlet module for a pneumatic diaphragm pump includes: a receiving block, two air guiding mechanisms, and an air outlet.

[0006] One end of the receiving block is provided with an air outlet channel, and the air outlet end of the air outlet channel is an air outlet hole; the receiving block has two air inlets symmetrically opened on both sides of the air outlet hole; the interior of the receiving block has two air inlets symmetrically opened on both sides of the air outlet channel, and one end of the air inlet channel is a limiting hole, the size of which is smaller than the air inlet channel; each air inlet hole is connected to an air inlet channel through a limiting hole; the end of the receiving block away from the air inlet hole has two connecting holes, each connecting hole being connected to the end of an air inlet channel away from the air inlet hole; the interior of the end of the receiving block away from the air inlet hole has two air guide chambers, and the end of each air inlet channel away from the air inlet hole is connected to the air outlet channel through an air guide chamber; two air injection holes are symmetrically opened on both sides of one side of the receiving block; each air injection hole is connected to the middle area of ​​an air inlet channel; each air injection hole is connected to an air chamber of an external pneumatic diaphragm pump.

[0007] Two air guiding mechanisms are symmetrically arranged; each air guiding mechanism is correspondingly located at one of the air intake channels; each air guiding mechanism includes an air inlet, an air plug, an air guiding pipe, a sealing ring, and a sealing plug; each air inlet is correspondingly located at one of the air inlets and is detachably connected to the receiving block; each air plug is correspondingly located at one of the connecting holes and is detachably connected to the receiving block; each air guiding pipe is correspondingly located within one of the air intake channels; two annular connecting plates are provided in the middle area of ​​the air guiding pipe, the two annular connecting plates and the outer wall of the air guiding pipe form an annular sealing groove, the sealing ring is adapted to the annular sealing groove, and the sealing ring is received within the annular sealing groove; the air guiding pipe is connected to the inner wall of the air intake channel through the two annular connecting plates. Each of the sealing rings is in sealing contact with the inner wall of the air intake channel; one end of each air guide tube is in sealing connection with a plug; a venting hole is provided on the outer wall of the air guide tube between the plug and the annular connecting plate; each sealing plug is disposed in the end of the air intake channel near the air intake hole, the sealing plug has a frustum structure, the tip of the sealing plug is disposed near the limiting hole to seal and block the limiting hole; the wide end of the sealing plug is near the air guide tube to block the air intake end of the air guide tube; the wide end of the sealing plug is adapted to the air intake channel, the sealing plug is inserted into the air intake channel and slidably connected to the receiving block; an annular extrusion groove is provided around the air guide tube at the wide end of the sealing plug.

[0008] The air outlet is located at the air outlet and is detachably connected to the receiving block.

[0009] In one embodiment, the vent is a threaded hole.

[0010] In one embodiment, the air inlet is a threaded hole.

[0011] In one embodiment, the connecting hole is a threaded hole.

[0012] In one embodiment, both of the annular connecting plates are integrally formed with the air guide tube.

[0013] In one embodiment, the sealing ring is a soft rubber ring.

[0014] In one embodiment, the sealing ring is a soft silicone ring.

[0015] In one embodiment, the sealing plug is a soft rubber plug.

[0016] In one embodiment, the sealing plug is a soft silicone plug.

[0017] In one embodiment, the receiving block has a cuboid structure.

[0018] During operation, the air inlet / outlet module of the aforementioned pneumatic diaphragm pump connects the first output end of the external air source to an air inlet, and the second output end of the external air source to another air inlet. The air outlet is connected to an external exhaust pipe. Specifically, the first output end of the external air source enters the first air intake channel through the air inlet and the limiting hole, pushing the sealing plug in the first air intake channel against the air inlet end of the air guide pipe. When the air pressure in the first air intake channel is too high, due to the annular compression groove, the wide end of the sealing plug undergoes elastic deformation, allowing airflow to enter between the sealing plug and the annular connecting plate through the gap between the wide end of the sealing plug and the inner wall of the air intake channel, and then be discharged into the first air chamber of the external pneumatic diaphragm pump through the first air injection hole. The movement of the drive piston shaft within the pneumatic diaphragm pump increases the air pressure in the second air chamber. Compressed air from this second chamber enters the second intake channel through the second injection port, then flows through the air guide pipe within the second intake channel, through a vent hole in the guide pipe, into the outlet channel, and finally exits through the outlet nozzle. The working principle of injecting air from the second output end of the external air source is the same. The first and second output ends of the external air source alternately inject air to cooperate with the operation of the external pneumatic diaphragm pump. The aforementioned pneumatic diaphragm pump uses a simple, ingenious, and low-cost air inlet / outlet module. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the air inlet / outlet module for a pneumatic diaphragm pump in one embodiment;

[0020] Figure 2 This is a cross-sectional view of the air inlet / outlet module for a pneumatic diaphragm pump in one embodiment, showing its operating state.

[0021] Figure 3 This is a cross-sectional view of the air inlet / outlet module for a pneumatic diaphragm pump in one embodiment, showing its operating state. Detailed Implementation

[0022] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below. In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0026] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0027] Please refer to the following: Figures 1 to 3 This utility model provides an air inlet / outlet module 10 for a pneumatic diaphragm pump. The air inlet / outlet module 10 for a pneumatic diaphragm pump includes: a receiving block 100, two air guiding mechanisms 200 and an air outlet 300.

[0028] In this embodiment, the receiving block 100 has a cuboid structure. One end of the receiving block 100 has an air outlet channel 101, and the air outlet end of the air outlet channel 101 is an air outlet hole 102. In this embodiment, the air outlet hole 102 is a threaded hole. Two air inlets 103 are symmetrically formed on both sides of the air outlet hole 102 on the receiving block 100. In this embodiment, the air inlets 103 are threaded holes. Two air inlets 104 are symmetrically formed on both sides of the air outlet channel 101 inside the receiving block 100. One end of each air inlet 104 is a limiting hole 105, the size of which is smaller than that of the air inlet 104. Each air inlet hole 103 is connected to an air inlet channel 104 via a corresponding limiting hole 105. Two connecting holes 106 are formed on the end of the receiving block 100 away from the air inlet hole 103, and each connecting hole 106 is connected to the end of an air inlet channel 104 away from the air inlet hole 103. In this embodiment, the connecting hole 106 is a threaded hole. Two air guide chambers 107 are formed inside the receiving block 100 at the end furthest from the air inlet 103. Each air inlet channel 104, at the end furthest from the air inlet 103, is connected to the air outlet channel 101 through one of the air guide chambers 107. Two air injection holes 108 are symmetrically formed on both sides of one side of the receiving block 100. Each air injection hole 108 is connected to the middle region of an air inlet channel 104. Each air injection hole 108 is also connected to one air chamber of an external pneumatic diaphragm pump.

[0029] Two air guiding mechanisms 200 are symmetrically arranged. Each air guiding mechanism 200 is correspondingly located at an air intake channel 104. Each air guiding mechanism 200 includes an air inlet 210, a plug 220, an air guiding pipe 230, a sealing ring 240, and a sealing plug 250. Each air inlet 210 is correspondingly located at an air inlet 103 and detachably connected to a receiving block 100. Each plug 220 is correspondingly located at a connecting hole 106 and detachably connected to a receiving block 100. Each air guiding pipe 230 is correspondingly located within an air intake channel 104. Two annular connecting plates 231 are provided in the middle region of the air guiding pipe 230. In this embodiment, both annular connecting plates 231 are integrally formed with the air guiding pipe 230. The two annular connecting plates 231, combined with the outer wall of the air guiding pipe 230, form an annular sealing groove 201. The sealing ring 240 is adapted to the annular sealing groove 201 and is housed within the annular sealing groove 201. The air guide tube 230 is connected to the inner wall of the air intake channel 104 via two annular connecting plates 231, and each sealing ring 240 is in sealing contact with the inner wall of the air intake channel 104. In this embodiment, the sealing ring 240 is a soft rubber ring. In another embodiment, the sealing ring 240 is a soft silicone ring. One end of each air guide tube 230 is sealed to a plug 220. A venting hole 202 is provided on the outer wall of the air guide tube 230 located between the plug 220 and the annular connecting plate 231. Each sealing plug 250 is correspondingly disposed in the end of the air intake channel 104 near the air intake hole 103. The sealing plug 250 has a frustum structure, and its tip is positioned near the limiting hole 105 to seal and block the limiting hole 105. The wide end of the sealing plug 250 is positioned near the air guide tube 230 to block the air intake end of the air guide tube 230. In this embodiment, the sealing plug 250 is a soft rubber plug. In another embodiment, the sealing plug 250 is a soft silicone plug. The wide end of the sealing plug 250 is adapted to the air intake channel 104, and the sealing plug 250 is inserted into the air intake channel 104 and slidably connected to the receiving block 100. The wide end of the sealing plug 250 has an annular extrusion groove 203 around the air guide tube 230.

[0030] The air outlet 300 is located at the air outlet 102 and is detachably connected to the receiving block 100.

[0031] During operation, the air inlet / outlet module 10 of the aforementioned pneumatic diaphragm pump connects the first output end of the external air source to an air inlet 210 and the second output end of the external air source to another air inlet 210. The air outlet 300 is connected to an external exhaust pipe. Specifically, the first output end of the external air source enters the first air intake channel 104 through the air inlet 210 and the limiting hole 105, pushing the sealing plug 250 in the first air intake channel 104 against the air inlet end of the air guide pipe 230. When the air pressure in the first air intake channel 104 is too high, due to the annular extrusion groove 203, the wide end of the sealing plug 250 undergoes elastic deformation, allowing airflow to enter between the sealing plug 250 and the annular connecting plate 231 through the gap between the wide end of the sealing plug 250 and the inner wall of the air intake channel 104, and then discharge into the first air chamber of the external pneumatic diaphragm pump through the first air injection hole 108. The movement of the drive piston shaft within the pneumatic diaphragm pump increases the air pressure in the second air chamber. Compressed air in this second chamber enters the second air inlet channel 104 through the second injection port 108, then through the air guide pipe 230 within the second air inlet channel 104, the vent hole 202 on the air guide pipe 230, and the air guide chamber 107, eventually exiting through the air outlet 300. The working principle of the second output end of the external air source is the same as described above. The first and second output ends of the external air source alternately inject air to cooperate with the operation of the external pneumatic diaphragm pump. The aforementioned pneumatic diaphragm pump's air inlet / outlet module 10 has a simple, ingenious structure and is inexpensive.

[0032] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0033] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An inlet / outlet air module for a pneumatic diaphragm pump, characterized in that, include: The receiving block, two air guiding mechanisms, and an air outlet; One end of the receiving block is provided with an air outlet channel, and the air outlet end of the air outlet channel is an air outlet hole; the receiving block has two air inlets symmetrically opened on both sides of the air outlet hole; the interior of the receiving block has two air inlets symmetrically opened on both sides of the air outlet channel, and one end of the air inlet channel is a limiting hole, the size of which is smaller than the air inlet channel; each air inlet hole is connected to an air inlet channel through a limiting hole; the end of the receiving block away from the air inlet hole has two connecting holes, each connecting hole being connected to the end of an air inlet channel away from the air inlet hole; the interior of the end of the receiving block away from the air inlet hole has two air guide chambers, and the end of each air inlet channel away from the air inlet hole is connected to the air outlet channel through an air guide chamber; two air injection holes are symmetrically opened on both sides of one side of the receiving block; each air injection hole is connected to the middle area of ​​an air inlet channel; each air injection hole is connected to an air chamber of an external pneumatic diaphragm pump. Two air guiding mechanisms are symmetrically arranged; each air guiding mechanism is correspondingly located at one of the air intake channels; each air guiding mechanism includes an air inlet, an air plug, an air guiding pipe, a sealing ring, and a sealing plug; each air inlet is correspondingly located at one of the air inlets and is detachably connected to the receiving block; each air plug is correspondingly located at one of the connecting holes and is detachably connected to the receiving block; each air guiding pipe is correspondingly located within one of the air intake channels; two annular connecting plates are provided in the middle area of ​​the air guiding pipe, the two annular connecting plates and the outer wall of the air guiding pipe form an annular sealing groove, the sealing ring is adapted to the annular sealing groove, and the sealing ring is received within the annular sealing groove; the air guiding pipe is connected to the inner wall of the air intake channel through the two annular connecting plates. Each of the sealing rings is in sealing contact with the inner wall of the air intake channel; one end of each air guide tube is in sealing connection with a plug; a venting hole is provided on the outer wall of the air guide tube between the plug and the annular connecting plate; each sealing plug is disposed in the end of the air intake channel near the air intake hole, the sealing plug has a frustum structure, the tip of the sealing plug is disposed near the limiting hole to seal and block the limiting hole; the wide end of the sealing plug is near the air guide tube to block the air intake end of the air guide tube; the wide end of the sealing plug is adapted to the air intake channel, the sealing plug is inserted into the air intake channel and slidably connected to the receiving block; an annular extrusion groove is provided around the air guide tube at the wide end of the sealing plug. The air outlet is located at the air outlet and is detachably connected to the receiving block.

2. The air inlet / outlet module for a pneumatic diaphragm pump according to claim 1, characterized in that, The vent hole is a threaded hole.

3. The air inlet / outlet module for a pneumatic diaphragm pump according to claim 1, characterized in that, The air inlet is a threaded hole.

4. The air inlet / outlet module for a pneumatic diaphragm pump according to claim 1, characterized in that, The connecting hole is a threaded hole.

5. The air inlet / outlet module for a pneumatic diaphragm pump according to claim 1, characterized in that, Both of the annular connecting plates are integrally formed with the air guide pipe.

6. The air inlet / outlet module for a pneumatic diaphragm pump according to claim 1, characterized in that, The sealing ring is a soft rubber ring.

7. The air inlet / outlet module for a pneumatic diaphragm pump according to claim 1, characterized in that, The sealing ring is a soft silicone ring.

8. The air inlet / outlet module for a pneumatic diaphragm pump according to claim 1, characterized in that, The sealing plug is a soft rubber plug.

9. The air inlet / outlet module for a pneumatic diaphragm pump according to claim 1, characterized in that, The sealing plug is a soft silicone plug.

10. The air inlet / outlet module for a pneumatic diaphragm pump according to claim 1, characterized in that, The receiving block has a cuboid structure.

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