TWI653396B - Diaphragm pump - Google Patents

Abstract

A diaphragm type pump device includes a motor unit and a main body unit. The main unit includes a base, an input tube and an output tube connected to the base, a diaphragm, a two-valve piece, and a supplemental valve. The base has a first buffer space, a second buffer space, an input space for connecting the input tube, an output space for connecting the output tube, and a flow path connecting the input space and the second buffer space. And a reserved air passage for the air supply valve. The diaphragm is disposed between the flow channel and the motor unit, and the valve plates are respectively disposed between the input space and the flow channel, and between the second buffer space and the flow channel to control the space and the flow channel Connected or not. The invention can reduce the vibration between fluids and increase the buffering margin of the temporary fluid to increase the suction flow rate.

Description

Diaphragm pump

The present invention relates to a suction device, and more particularly to a diaphragm type pump device.

Referring to FIG. 1, a conventional diaphragm type pump 1 includes a main housing 10 defining an inner space 101, a power mechanism 11 mounted in the inner space 101, a closed inner space 101, and a connection. a diaphragm 12 of the power mechanism 11 , a casing 13 covering the main casing 10 and defining a working space 102 together with the diaphragm 12 , and an inlet valve plate 14 disposed in the working space 102 . And an outlet valve piece 15. The working space 102 has an inlet flow channel 103, an outlet flow channel 104, and a pressure zone 105 between the inlet flow channel 103 and the outlet flow channel 104. The inlet valve piece 14 is disposed in the inlet flow passage 103, and the outlet valve piece 15 is disposed in the outlet flow passage 104. The diaphragm 12 is interposed between the pressure zone 105 and the inner space 101, and is deformed by the power mechanism 11 to change the distribution of the pressure zone 105 such that the pressure zone 105 communicates with the inlet flow channel 103 to generate a negative Pressing, causing external fluid to draw fluid through the inlet valve plate 13 through the inlet flow passage 103, or causing the pressure zone 105 to communicate with the outlet flow passage 104 to generate a positive pressure, so that fluid in the pressure zone 105 flows through the outlet flow The passage 104 discharges fluid through the outlet valve plate 15.

However, when the fluid enters the working space 102 via the inlet valve piece 14, the surrounding components are violently struck, and the fluids that are successively entered are disturbed with each other, so that the diaphragm type pump 1 generates vibration as a whole, and thus is not small. noise. The vibration described not only affects the stability of the diaphragm type 1 but also affects the connection relationship between the devices connected to the upstream and downstream of the diaphragm type pump 1, and must be reduced. In addition, the suction flow rate of the diaphragm type pump 1 is directly related to the operation of the working space 102 and the power mechanism 11, and how to effectively increase the flow rate of suction is also one of the main subjects for improving the performance of the suction device.

Accordingly, it is an object of the present invention to provide a diaphragm type pump apparatus which can reduce vibration, noise, and increase flow rate.

Accordingly, the diaphragm type pump device of the present invention comprises a motor unit and a main body unit connected to the motor unit.

The main unit includes a base, an input pipe connected to the base, an output pipe connected to the base, a diaphragm disposed between the base and the motor unit, a two-valve piece, and a complement Air valve.

The pedestal has a first buffer space, a second buffer space spaced apart from the first buffer space, an input space connected to the first buffer space and having an input port, and a second buffer space And having an output space of an output port, a flow path connected between the input space and the second buffer space, and a reserved air channel connected between the input space and the outside world. The input pipe is an input port connected to the input space, and the output pipe is an output port connected to the output space.

The diaphragm is disposed between the flow channel and the motor unit, and the valve plates are respectively disposed between the input space and the flow channel, and between the second buffer space and the flow channel for controlling The input space and the flow channel, and the second buffer space and the flow channel are connected or not.

The air supply valve is disposed in the reserved air passage to control whether external air is introduced into the input space.

The effect of the invention is that when the fluid enters the input space via the input pipe, a part of the fluid first enters the first buffer space, and then enters the flow channel through the valve plate on the same side, and the fluid then passes through another A valve piece enters the second buffer space and is output from the output tube from the output space. Through the design of the first buffer space and the second buffer space, a buffering effect can be generated at both the input end and the output end of the fluid, in addition to reducing the vibration generated by the collision between the fluids, and preventing the connected pipeline from falling off due to vibration. The buffering margin of the temporary storage fluid of the main body unit can also be increased, thereby increasing the suction flow rate of the pump. And the air supply valve introduces a small amount of outside air into the input space through the reserved air passage, and generates a turbulent flow by the introduced air and the existing fluid in the input space, and buffers the fluid and the diaphragm to avoid the The fluid in the input space strikes the surrounding components or resonates with the surrounding components to produce a specific frequency for noise reduction purposes.

Referring to FIG. 2 and FIG. 3, an embodiment of the diaphragm type pump device of the present invention includes a motor unit 2 and a main body unit 3 connected to the motor unit 2. The motor unit 2 is operative to provide power to operate the body unit 3 to draw liquid or gas. The main body unit 3 includes a base 31, an input pipe 32 connected to the base 31, an output pipe 33 connected to the base 31, and a diaphragm disposed between the base 31 and the motor unit 2. 34. Two valve plates 35 for generating an opening and closing effect, a buffer sheet 36 attached to the base 31, an air supply valve 37 attached to the base 31, and a set of the air supply valve A retaining ring 38 on the gas valve 37.

Referring to FIG. 4 and FIG. 5, the pedestal 31 has a first buffer space 311, a second buffer space 312 spaced apart from the first buffer space 311, and a first buffer space 311 and an input port. An input space 313 of the 318, an output space 314 connected to the second buffer space 312 and having an output port 319, a flow path 315 connected between the input space 313 and the second buffer space 312, and a setting The support column 316 in the first buffer space 311 and a reserved air channel 300 connected between the input space and the outside world. The first buffer space 311 has a first fluid region 411 between the corresponding buffer sheet 36 and the input space 313, and a first air region 412 located on the other side of the corresponding buffer sheet 36, that is, The first air zone 412 and the first fluid zone 411 are respectively located on opposite sides of the corresponding buffer sheet 36. The second buffer space 312 has a second fluid region 421 between the corresponding buffer sheet 36 and the output space 314, and a second air region 422 on the other side of the corresponding buffer sheet 36. The air zone 422 and the second fluid zone 421 are respectively located on opposite sides of the corresponding buffer sheet 36.

The input pipe 32 is an input port 318 connected to the input space 313, and the output pipe 33 is an output port 319 connected to the output space 314. The diaphragm 34 is disposed between the flow path 315 and the motor unit 2, and the valve plates 35 are respectively disposed between the input space 313 and the flow path 315, and the second buffer space 312 and the flow Between the paths 315, the input space 313 and the flow path 315 are controlled, and the second buffer space 312 is connected to the flow path 315. The buffer sheets 36 are disposed in the first buffer space 311 and the second buffer space 312, respectively, and are disposed facing the flow direction of the fluid. Among them, the buffer sheets 36 are made of a flexible material having elasticity. The support column 316 is protruded toward the corresponding buffer sheet 36 in the first buffer space 311 in a direction parallel to the flow of fluid from the input space 313 to the first buffer space 311.

Referring to FIG. 6 and FIG. 5, the input pipe 32 and the output pipe 33 of the main body unit 3 can be respectively connected to an upstream device and a downstream device (not shown), such that the input space 313 and the output space 314. They are respectively connected to the upstream suction space and the downstream discharge space. When the motor unit 2 supplies power to activate the diaphragm 34, the fluid to be sucked into the space enters the input space 313 via the input pipe 32, and a portion enters the first fluid region of the first buffer space 311. 411, and will impact the buffer sheet 36 between the first fluid zone 411 and the first air zone 412. Referring to FIG. 6 and FIG. 7 at the same time, at this time, due to the presence of air in the first air region 412 of the first buffer space 311, the elasticity of the buffer sheet 36 is matched to generate a buffer effect on the fluid entering the first fluid region 411. In order to avoid the shock caused by the collision between the fluids entering and leaving the front and back. When the first fluid region 411 of the first buffer space 311 is filled with the pumped fluid, the deformation of the valve plate 35 due to the pressure is matched as shown in FIG. 7, and the fluid passes through the flow passage 315. And through the valve plate 35. It should be particularly noted that when the fluid passes through the valve plate 35, a negative pressure state is formed in the flow path 315, in order to prevent displacement of the buffer sheet 36 in the first buffer space 311 due to adsorption. Even if it is broken, the support post 316 is supported under the buffer sheet 36 to provide a supporting effect to prevent the cushion sheet 36 from falling off or being damaged.

Referring to Figures 7 and 8, the fluid in the flow path 315 will then cooperate with the action of the diaphragm 34 to enter the valve plate 35 between the flow path 315 and the second buffer space 312. The second buffer zone 312 is in the second fluid zone 421. At this time, the fluid also impacts the buffer sheet 36 located in the second buffer space 312. Also, due to the presence of air in the second air region 422, the buffer sheet 36 can be used to generate a buffering effect, and the front and rear access can be reduced. The fluids of the second fluid zone 421 collide with each other to generate vibration. When the second fluid zone 421 is filled with fluid, the fluid flows to the output space 314 and is output by the output pipe 33 to complete the process of pumping the fluid.

The first buffer space 311 and the second buffer space 312 are respectively designed on the side of the base 31 adjacent to the input tube 32 and adjacent to the output tube 33, as shown in FIG. 6 to FIG. Through the above-mentioned "dual-chamber" buffer design, the buffering effect can be simultaneously generated at the input end and the output end, and the main body unit 3 as a whole can generate a shockproof effect in a balanced and comprehensive manner. The buffering margin of the temporary fluid formed by the first buffer space 311 and the second buffer space 312 can be combined with the characteristic that the mutual impact between the fluids can be reduced, thereby effectively increasing the flow rate of the pumped fluid. It should be particularly noted that the excellent performance in the suction flow rate by this embodiment can produce good suction regardless of the sufficient horsepower of the motor unit 2 as shown in FIG. 2, whether it is pumping gas or liquid. performance.

Referring to FIG. 9 and FIG. 10, the reserved air passage 300 has a gas injection section 301 connected to the input space 313, and a gas injection section 301 is connected to one end of the input space 313 and is provided for the air supply valve 37. a chamber 302, and a lead-in section 303 connected between the chamber 302 and the outside. The base 31 has an inner wall surface 308 surrounding the chamber 302 of the reserved air passage 300, and an internal thread 309 formed on the inner wall surface 308. The air supply valve 37 extends along an axis and has an extending portion 371 for closing the gas injection portion 301, and a thread portion 372 extending integrally from the extending portion 371 and screwed to the internal thread 309. And an operating portion 373 integrally connected to the threaded portion 372 and exposed to the outside and operable to move the threaded portion 372 along the axis on the internal thread 309. The operating portion 373 has an operating hole 379 facing the outside and adapted for positioning by a rotating tool, and a recess 378 surrounding the axis and having a concave shape. The fixing ring 38 is disposed in the groove 378 for increasing the frictional force to ensure that the operating portion 373 is positioned in the chamber 302. The air supply valve 37 is configured to control whether the outside air is introduced into the input space 313, and the user can use a rotary tool such as a pick-up, a screwdriver or the like to position the operating hole 379 to rotate, so that the air supply valve The threaded portion 372 of the 37 is screwed or screwed out with respect to the internal thread 309, and controls whether the outside air enters the input space 313 from the lead-in section 303 through the gas injection section 301.

Referring to FIG. 9 and FIG. 11, as shown in FIG. 9, when the fluid is sucked by the embodiment, the air supply valve 37 can be screwed into the internal thread 309 by the threaded portion 372, so that the extending portion 371 is extended. The gas injection section 301 is disposed in the reserved air passage 300, and the gas injection section 301 is closed to prevent outside air from being introduced into the input space 313, thereby increasing the degree of vacuum in the input space 313 to achieve an increase in flow rate and suction. The effect of speed. If the noise is generated by the operation of the embodiment, the threaded portion 372 of the air supply valve 37 can be screwed away from the input space 313 as shown in FIG. 11, because the extension portion 371 is larger in diameter. The inner wall surface 308 is surrounded by the inner wall surface 308, so that the lead-in section 303 of the reserved air channel 300 and the chamber 302 communicate with each other, and the extending portion 371 does not close the gas-injecting portion 301, and the outside air can be self-contained. The chamber 302 enters the gas injection section 301 and is introduced into the input space 313. Referring to FIG. 11 and FIG. 12, when outside air enters the input space 313, a turbulence is generated between the pumped fluid and the specific frequency between the sucked fluid and the surrounding component, thereby Effectively eliminates noise.

In summary, the diaphragm type pumping device of the present invention can utilize the design of the first buffer space 311 and the second buffer space 312 to cooperate with the buffer sheets 36 to generate a buffering effect, thereby reducing the impact of the sucked fluids on each other. The overall shock is reduced, and the buffering margin of the temporary fluid is increased through the first buffer space 311 and the second buffer space 312, thereby increasing the flow rate of the suction fluid; and the air supply valve 37 is used to introduce a small amount of air at a timely time. The method of destroying the resonance of the specific frequency by generating the turbulence and the buffering action by the diaphragm 34 reduce the noise generated during the operation, so that the object of the present invention can be achieved.

However, the above is only the embodiment of the present invention, and the scope of the invention is not limited thereto, and all the equivalent equivalent changes and modifications according to the scope of the patent application and the patent specification of the present invention are still The scope of the invention is covered.

2‧‧‧Motor unit

3‧‧‧Main unit

300‧‧‧ reserved airway

301‧‧‧ gas injection section

302‧‧ ‧ room

303‧‧‧Introduction section

308‧‧‧ inner wall

309‧‧‧ internal thread

31‧‧‧ Pedestal

311‧‧‧First buffer space

312‧‧‧Second buffer space

313‧‧‧Input space

314‧‧‧Output space

315‧‧‧ flow path

316‧‧‧Support column

318‧‧‧ input port

319‧‧‧ output

32‧‧‧Input tube

33‧‧‧Output tube

34‧‧‧Separator

35‧‧‧ Valves

36‧‧‧buffer

37‧‧‧Inflator

371‧‧‧Extension

372‧‧‧Threaded Department

373‧‧‧Operation Department

378‧‧‧ Groove

379‧‧‧Operation hole

38‧‧‧ airtight ring

411‧‧‧First Fluid Zone

412‧‧‧First Air Zone

421‧‧‧Second fluid zone

422‧‧‧Second air zone

Other features and advantages of the present invention will be apparent from the embodiments of the present invention, wherein: FIG. 1 is a cross-sectional view showing a conventional diaphragm type pump; FIG. 2 is a perspective view showing the diaphragm type of the present invention. FIG. 3 is a perspective exploded view showing a motor unit and a main unit of the embodiment; FIG. 4 is a cross-sectional view showing the components of the main unit; FIG. 5 is a plan view, an auxiliary view 4 illustrates a first buffer space and a second buffer space of a base of the main unit; FIG. 6 is a cross-sectional view similar to FIG. 4, illustrating a case where fluid enters the first buffer space; FIG. 7 is a view similar to FIG. A cross-sectional view illustrating the flow of fluid to the flow path of the base via the first buffer space; FIG. 8 is a cross-sectional view similar to FIG. 7 illustrating the flow of fluid into the second buffer space via the flow path; FIG. Figure 1 is a partial enlarged view of a portion of Figure 9 illustrating the structure of the air supply valve; Figure 11 is a cross-sectional view of the same viewing angle as Figure 9, with reference to Figure 9 The use of the air supply valve; and Fig. 12 is a cross-sectional view of a different angle of view from Figs. 4 and 9, illustrating the relative position of the air supply valve to other components.

Claims (9)

A diaphragm type pump device comprising: a motor unit; and a main body unit connected to the motor unit and including a base having a first buffer space and a second buffer spaced from the first buffer space a space, an input space connected to the first buffer space and having an input port, an output space connected to the second buffer space and having an output port, and a communication between the input space and the second buffer space a flow channel, and a reserved airway connected between the input space and the outside, the reserved gas prop has a gas injection section connected to the input space, and a gas injection section connected to the gas injection section opposite to one end of the input space a chamber, and a lead-in section connected between the chamber and the outside; an input pipe connected to the input port of the input space; an output pipe connected to the output port of the output space; a diaphragm disposed at Between the flow path and the motor unit, two valve plates are respectively disposed between the input space and the flow channel, and between the second buffer space and the flow channel for controlling the input space and the flow channel between, The second buffer space with the communication between the flow passage or not; and a fill valve disposed in the receiving chamber of the reservation of the airway to control whether ambient air is introduced into the input space. The diaphragm type pump device of claim 1, wherein the main body unit further comprises two disposed in the first buffer space and the second buffer space respectively Medium, and a buffer sheet for buffering the impact of the fluid. The diaphragm type pump device of claim 2, wherein the buffer sheets are disposed facing the flow direction of the fluid. The diaphragm type pump device according to claim 2, wherein the buffer sheets are made of a flexible material having elasticity. The diaphragm-type pump device of claim 3, wherein the base further has a direction in the first buffer space that flows parallel to the fluid from the input space to the first buffer space, and the corresponding direction The support column of the buffer sheet protrudes. The diaphragm-type pump device of claim 3, wherein the first buffer space has a first fluid zone between the corresponding buffer sheet and the input space, and a first buffer zone on the other side of the corresponding buffer sheet. a first air zone; and the second buffer space has a second fluid zone between the corresponding buffer sheet and the output space, and a second air zone on the other side of the corresponding buffer sheet. The diaphragm type pump device according to claim 1, wherein the base further has an inner wall surface surrounding the chamber of the reserved air passage, and an internal thread formed on the inner wall surface, the air supply valve Extending along an axis, and having an extending portion for closing the gas injection portion, a thread portion extending integrally from the extending portion and screwed to the internal thread, and an integral connection to the thread portion and exposing An operating portion that is operable to move the threaded portion along the axis on the internal thread. The diaphragm type pump device according to claim 7, wherein the operation portion has an operation hole facing the outside and adapted to be positioned by a rotary tool. The diaphragm type pump device of claim 7, wherein the operating portion has a recessed groove surrounding the axis, the body unit further comprising a groove disposed on the groove for generating friction The operating portion is positioned at a stationary ring of the chamber.