阅读说明：本技术 泵减振结构 (Vibration damping structure of pump ) 是由 卢连苗 卢勃 杨军明 陈建荣 劳科奇 于 2020-03-25 设计创作，主要内容包括：本发明公开了一种泵减振结构,涉及隔膜泵技术领域；包括位于泵内的减振弹簧,泵包括壳体、位于壳体内的用于吸水和排水的膜片、若干用于驱动膜片运动的活塞、用于支撑活塞的活塞支架、用于驱动活塞支架运动的驱动轴,活塞位于活塞支架上端面,减振弹簧上端连接在活塞支架的下端面的外缘,减振弹簧下端连接在壳体底部,驱动轴连接在活塞支架的中部,活塞与驱动轴的距离小于减振弹簧与驱动轴的距离。本发明提出一种泵减振结构,活塞支架受力均匀、减小泵的振动；使用寿命长。(The invention discloses a pump vibration reduction structure, and relates to the technical field of diaphragm pumps; including being located the damping spring of pump, the pump includes the casing, be located the diaphragm that is used for water absorption and drainage in the casing, a plurality of pistons that are used for driving the diaphragm motion, a piston support for supporting the piston, a drive shaft for driving the piston support motion, the piston is located piston support up end, the outer fringe at piston support's lower terminal surface is connected to the damping spring upper end, the damping spring lower extreme is connected in the casing bottom, the middle part at piston support is connected to the drive shaft, the distance of piston and drive shaft is less than the distance of damping spring and drive shaft. The invention provides a pump vibration damping structure, wherein a piston support is uniformly stressed, and the vibration of a pump is reduced; the service life is long.)

1. The utility model provides a pump damping structure, its characterized in that, is including being located the damping spring of pump, the pump includes the casing, be located the diaphragm that is used for water absorption and drainage in the casing, a plurality of pistons that are used for driving the diaphragm motion, the piston support that is used for supporting the piston, the drive shaft that is used for driving the piston support motion, the piston is located the piston support up end, the outer fringe of piston support's lower terminal surface is connected to the damping spring upper end, the casing bottom is connected to the damping spring lower extreme, the middle part at piston support is connected to the drive shaft, the distance of piston and drive shaft is less than the distance of damping spring and drive shaft.

2. The vibration damping structure of a pump according to claim 1, wherein the space above the diaphragm in the pump is a fluid chamber, the pump further comprises a first partition plate located in the fluid chamber and dividing the fluid chamber into an upper chamber and a lower chamber, a second partition plate located on the upper side of the first partition plate and dividing the upper chamber into a water suction chamber and a water discharge chamber, a first via hole located at the bottom of the water suction chamber, a second via hole located at the bottom of the water discharge chamber, a water suction valve plate attached to the lower side of the first via hole, a water discharge valve plate attached to the upper side of the second via hole, a water inlet located on the housing and communicated with the water suction chamber, and a water outlet located on the housing and communicated with the water discharge chamber.

3. The vibration damping structure for a pump according to claim 1, wherein an upper limit post fixedly connected to the piston holder is inserted into an upper end of the vibration damping spring, and a lower limit post fixedly connected to a bottom of the housing is inserted into a lower end of the vibration damping spring.

4. The vibration damping structure of a pump according to claim 2, wherein the top of the housing is provided with an overflow opening at a position corresponding to the drainage cavity, the upper side of the top of the housing is provided with a sink, the sink is provided with a water return opening communicated with the water suction cavity, the overflow opening and the upper cover of the sink are provided with pressure limiting valve plates, the edges of the pressure limiting valve plates are fixedly connected to the housing, the upper sides of the pressure limiting valve plates are abutted with pressing blocks, and the pressing blocks are connected with pressure limiting springs for pressing the pressing blocks towards the pressure limiting valve plates.

5. The vibration damping structure for the pump according to claim 4, wherein the top of the housing is provided with a clamping groove and a support sleeve adapted to the clamping groove, the support sleeve covers the pressing block and the pressure limiting spring, the lower end of the support sleeve is adapted to the clamping groove and clamped to the clamping groove, the pressure limiting valve plate is located in the clamping groove and pressed on the housing by the support sleeve, the upper end of the pressure limiting spring is connected to the upper end of the support sleeve, and the lower end of the pressure limiting spring is connected to the pressing block.

6. A vibration damping structure for a pump according to claim 5, wherein a cylinder is fixedly connected to the upper end of the support sleeve, a cylinder piston is slidably connected in the cylinder, a piston rod is inserted into the upper end of the support sleeve, the lower end of the piston rod is fixedly connected to the pressing block, the upper end of the piston rod is fixedly connected to the cylinder piston, a check valve is arranged on the cylinder piston and faces the upper side of the cylinder piston, an air nozzle is arranged at the upper end of the cylinder, and a pressure limiting valve is sleeved on the upper end of the air nozzle.

7. A vibration damping arrangement according to claim 6, wherein the air tap is threadedly connected to the cylinder block.

Technical Field

The invention belongs to the technical field of water purifier diaphragm booster pumps, and particularly relates to a diaphragm pump vibration reduction structure.

Background

The principle of the membrane pump is to drive a piston carrier by means of a drive shaft, which drives the piston and the membrane to move, thereby discharging the water.

The traditional piston support is only used for bearing the pressure transmitted by the diaphragm through the driving shaft, so that the stress of the piston support is uneven, the piston support is easy to damage, the service life of the pump is short, and in addition, the vibration and the noise are large.

Disclosure of Invention

The invention aims to overcome the defects of uneven stress and obvious vibration of a piston support of the conventional pump, and provides a vibration reduction structure of the pump, wherein the piston support is stressed uniformly, and the vibration of the pump is reduced.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a pump damping structure, is including being located the damping spring of pump, the pump includes the casing, be located the diaphragm that is used for water absorption and drainage in the casing, a plurality of pistons that are used for driving the diaphragm motion, the piston support that is used for supporting the piston, the drive shaft that is used for driving the piston support motion, the piston is located piston support up end, the outer fringe at piston support's lower terminal surface is connected to the damping spring upper end, the casing bottom is connected to the damping spring lower extreme, the middle part at piston support is connected to the drive shaft, the distance of piston and drive shaft is less than the distance of damping spring and drive shaft. When the piston moves upwards, the piston support bears downward pressure at the piston, the traditional piston support is stressed by only the driving bearing, so that the stress of the piston support is uneven, the damping spring is additionally arranged at the outer edge of the piston support, and the damping spring provides upward supporting force for the piston support when the piston moves upwards, so that the piston support can be supported at both the driving shaft and the damping spring, and the stress is even; the piston is located the centre of drive shaft and damping spring, and the piston support atress is reasonable, and in addition, the piston support is when up-and-down motion, and vibration and noise are great, and the spring can the damping noise reduction.

As preferred, be the fluid cavity in the pump in diaphragm top space, the pump is still including being located the fluid cavity divide into the first baffle of cavity and lower cavity with the fluid cavity, be located the second baffle that will go up the cavity separation and become the chamber that absorbs water and arrange the water cavity of first baffle upside, be located the first via hole that absorbs water the chamber bottom, be located the second via hole of arranging the water cavity bottom, the laminating is at the valve block that absorbs water of first via hole downside, the laminating is at the drain valve block of second via hole upside, be located the casing and with the water inlet that absorbs water the chamber intercommunication, be located the casing and with the delivery port that arranges the water cavity intercommunication. The structure is simple.

Preferably, the upper end of the damping spring is inserted with an upper limit column fixedly connected with the piston support, and the lower end of the damping spring is inserted with a lower limit column fixedly connected with the bottom of the shell. The stability of the damping spring is ensured.

Preferably, the top of the shell is provided with an overflow port at a position corresponding to the drainage cavity, the upper side of the top of the shell is provided with a water sink, the water sink is internally provided with a water return port communicated with the water suction cavity, the overflow port and the upper cover of the water sink are provided with pressure limiting valve plates, the edges of the pressure limiting valve plates are fixedly connected to the shell, the upper sides of the pressure limiting valve plates are abutted against a pressing block, and the pressing block is connected with a pressure limiting spring used for extruding the pressing block to the pressure limiting valve plates. Prevent the water pressure in the drainage cavity from being overlarge.

Preferably, the top of the shell is provided with a clamping groove and a supporting sleeve matched with the clamping groove, the supporting sleeve covers the pressing block and the pressure limiting spring, the lower end of the supporting sleeve is matched with the clamping groove and clamped with the clamping groove, the pressure limiting valve plate is located in the clamping groove and is extruded on the shell by the supporting sleeve, the upper end of the pressure limiting spring is connected to the upper end of the supporting sleeve, and the lower end of the pressure limiting spring is connected to the pressing block. The structure is simple.

Preferably, a cylinder body is fixedly connected to the upper end of the support sleeve, a cylinder piston is slidably connected in the cylinder body, a piston rod is inserted into the upper end of the support sleeve, the lower end of the piston rod is fixedly connected to the pressing block, the upper end of the piston rod is fixedly connected to the cylinder piston, a one-way valve is arranged on the cylinder piston and faces the upper side of the cylinder piston, an air faucet is arranged at the upper end of the cylinder body, and a pressure limiting valve is sleeved on the upper end of the air faucet. The stress of the pressure limiting spring is reduced by utilizing high-pressure air, so that the service life of the pressure limiting spring is prolonged.

Preferably, the air tap is in threaded connection with the cylinder body. The pressing block can be locked by rotating the air tap, so that the sufficient water outlet pressure is ensured.

The invention has the beneficial effects that: the invention provides a pump vibration damping structure, wherein a piston support is uniformly stressed, and the vibration of a pump is reduced; the service life is long.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

fig. 3 is a schematic diagram of the present invention with the addition of a cylinder and a cylinder piston.

In the figure: the device comprises a damping spring 1, a shell 2, a diaphragm 3, a piston 4, a piston support 5, a driving shaft 6, an upper limiting column 7, a lower limiting column 8, a first partition plate 9, a water suction cavity 10, a water discharge cavity 11, a second partition plate 12, a first through hole 13, a second through hole 14, a water suction valve piece 15, a water discharge valve piece 16, a water inlet 17, a water outlet 18, an overflow port 19, a lower water tank 20, a water return port 21, a pressure limiting valve piece 22, a pressing block 23, a pressure limiting spring 24, a supporting sleeve 25, a clamping groove 26, a cylinder body 27, a cylinder body piston 28, a piston rod 29, a one-way valve 30, an air nozzle 31 and a pressure limiting valve 32.

Detailed Description

The invention is explained in further detail below with reference to the figures and the detailed description:

example (b):

referring to fig. 1 to 3, a vibration damping structure of a pump comprises a vibration damping spring 1 located in the pump, wherein the pump comprises a housing 2, a diaphragm 3 located in the housing 2 and used for absorbing water and draining water, a plurality of pistons 4 used for driving the diaphragm 3 to move, a piston support 5 used for supporting the pistons 4, and a driving shaft 6 used for driving the piston support 5 to move, the pistons 4 are located on the upper end surface of the piston support 5, the upper end of the vibration damping spring 1 is connected to the outer edge of the lower end surface of the piston support 5, the lower end of the vibration damping spring 1 is connected to the bottom of the housing 2, the driving shaft 6 is connected to the middle of the piston support 5, and the distance between the pistons 4 and the driving shaft 6 is smaller than the distance between the vibration damping spring 1 and the driving shaft 6; an upper limiting column 7 fixedly connected with the piston support 5 is inserted into the upper end of the damping spring 1, and a lower limiting column 8 fixedly connected with the bottom of the shell 2 is inserted into the lower end of the damping spring 1.

The space above the diaphragm 3 in the pump is a fluid chamber, the pump also comprises a first clapboard 9 which is positioned in the fluid chamber and divides the fluid chamber into an upper chamber and a lower chamber, a second clapboard 12 which is positioned on the upper side of the first clapboard 9 and divides the upper chamber into a water suction chamber 10 and a water drainage chamber 11, a first via hole 13 which is positioned at the bottom of the water suction chamber 10, a second via hole 14 which is positioned at the bottom of the water drainage chamber 11, a water suction valve plate 15 which is attached to the lower side of the first via hole 13, a water drainage valve plate 16 which is attached to the upper side of the second via hole 14, a water inlet 17 which is positioned on the shell 2 and is communicated with the water suction chamber 10, and a water outlet 18 which is positioned on the shell 2 and is communicated with the water drainage chamber 11; an overflow port 19 is arranged at the top of the shell 2 at a position corresponding to the drainage cavity 11, a lower water tank 20 is arranged on the upper side of the top of the shell 2, a water return port 21 communicated with the water suction cavity 10 is arranged in the lower water tank 20, pressure limiting valve plates 22 are arranged on the overflow port 19 and the lower water tank 20 in a covering manner, the edges of the pressure limiting valve plates 22 are fixedly connected to the shell 2, a pressing block 23 is abutted against the upper side of the pressure limiting valve plates 22, and a pressure limiting spring 24 used for extruding the pressing block 23 to the pressure limiting valve plates 22 is connected to the pressing block 23; the top of the shell 2 is provided with a clamping groove 26 and a support sleeve matched with the clamping groove 26, the support sleeve covers the pressing block 23 and the pressure limiting spring 24, the lower end of the support sleeve is matched with the clamping groove 26 and clamped with the clamping groove 26, the pressure limiting valve plate 22 is positioned in the clamping groove 26 and is extruded on the shell 2 by the support sleeve, the upper end of the pressure limiting spring 24 is connected to the upper end of the support sleeve, and the lower end of the pressure limiting spring 24 is connected to the pressing block 23; a cylinder 27 is fixedly connected to the upper end of the support sleeve, a cylinder piston 28 is slidably connected in the cylinder 27, a piston rod 29 is inserted into the upper end of the support sleeve, the lower end of the piston rod 29 is fixedly connected to the pressing block 23, the upper end of the piston rod 29 is fixedly connected to the cylinder piston 28, a one-way valve 30 facing the upper side of the cylinder piston 28 is arranged on the cylinder piston 28, an air nozzle 31 is arranged at the upper end of the cylinder 27, and a pressure limiting valve 32 is sleeved on the upper end of the air nozzle 31; the air faucet 31 is screwed with the cylinder 27.

Principle of embodiment:

when the pump is in operation, the drive shaft 6 drives the piston 4 to move up and down, when the piston 4 moves down, the volume of the lower cavity becomes large, at the moment, the water suction valve piece 15 is separated from the first via hole 13, water enters the lower cavity after passing through the water inlet 17, the water suction cavity 10 and the first via hole 13, then the piston 4 moves up, the water suction valve piece 15 is attached to the first via hole 13 again, the water discharge valve piece 16 is separated from the second via hole 14, and water is extruded into the water discharge cavity 11 through the second via hole 14 under high pressure from the lower cavity and then is discharged from the water outlet 18.

In the process, when the piston moves upwards, the piston support bears downward pressure at the piston, the traditional piston support only bears the pressure by the driving shaft 6, so that the stress of the piston support is uneven, the damping spring 1 is additionally arranged at the outer edge of the piston support, and the damping spring 1 provides upward supporting force for the piston support when the piston moves upwards, so that the piston support can be supported at the driving shaft 6 and the damping spring 1 and is even in stress; in addition, when the piston support moves up and down, vibration and noise are large, and the spring can reduce vibration and noise.

In addition, when water is pressed out, the pressure in the drainage cavity 11 is easy to be larger, and at the moment, the resistance of the driving shaft 6 is also easy to be larger, so that the service life of the pump is easy to be greatly reduced; in this embodiment, when the pressure in the drainage cavity 11 is too high, the pressure limiting valve plate 22 moves upward to open the pressing block 23, the pressure limiting spring 24 contracts, the pressure limiting valve plate 22 is separated from the overflow port 19 and the lower water tank 20, and a part of water in the drainage cavity 11 flows out of the overflow port 19 and is drained into the water suction cavity 10 again through the lower water tank 20, so that the water pressure in the drainage cavity 11 is reduced.

When the pump works under high load, the water pressure in the drainage cavity 11 is often in an overhigh state, the pressure limiting spring 24 is in a state of repeatedly stretching and retracting for the last time, and the pressure limiting spring 24 is easy to lose efficacy; an improvement is proposed.

When the press block 23 moves up and down, the piston rod 29 is driven to move up and down, air continuously enters the cylinder body 27 through the one-way valve 30, so that the air pressure in the cylinder body 27 is continuously increased, the downward pressure of the piston rod 29 on the press block 23 is increased, the pressure of the pressure limiting spring 24 is greatly reduced, and the service life of the pressure limiting spring 24 is greatly prolonged.

When the air pressure in the cylinder 27 reaches a certain level, the air in the cylinder 27 is discharged from the pressure limiting valve 32 through the air nozzle 31.

Although the pressure limiting valve plate 22 can reduce the pressure of the drain cavity 11, the water outlet pressure of the water outlet 18 is also reduced. When a large water outlet pressure is needed, the air tap 31 is rotated and abuts against the upper side of the cylinder piston 28, and the pressing block 23 abuts against the pressure limiting valve plate 22, so that the pressure limiting valve plate 22 is prevented from deforming, the pressure in the drainage cavity cannot be reduced, and the water outlet pressure of the water outlet 18 is ensured.