CN210218056U

CN210218056U - Novel diaphragm pump

Info

Publication number: CN210218056U
Application number: CN201921273799.6U
Authority: CN
Inventors: Yumei Bao; 包玉美
Original assignee: Shenzhen Tianya Peer Technology Co Ltd
Current assignee: Zhejiang Tianya peer technology Co.,Ltd.
Priority date: 2019-08-08
Filing date: 2019-08-08
Publication date: 2020-03-31
Anticipated expiration: 2029-08-08

Abstract

The utility model belongs to the technical field of the diaphragm pump, especially, be a novel diaphragm pump, which comprises a pump body, the front end housing is installed to the top side screw thread of the pump body, the through-hole has been seted up to the top side of front end housing, slidable mounting has the plunger in the through-hole, the top of plunger extends to outside the through-hole and is connected with actuating mechanism, the bottom of plunger extends to in the pump body and the fixed mounting piston, fixed mounting has the support ring on the inner wall of the pump body, install the rubber diaphragm in the support ring, medium import and medium export are installed respectively to the both sides of the pump body, medium import and medium export all are linked together with the. The utility model discloses a set up top board and holding down plate, realize the protection to the rubber diaphragm, prolong the life cycle of diaphragm, the surface of rubber diaphragm is provided with depressed part and protrusion protection portion, and when the rubber diaphragm received the impact, the piston can prevent to reveal in addition, and then prolongs the life of diaphragm pump, reduces the overhaul of the equipments cost.

Description

Novel diaphragm pump

Technical Field

The utility model relates to a diaphragm pump technical field especially relates to a novel diaphragm pump.

Background

Diaphragm pumps, also known as control pumps, are the main type of actuator that is operated by power to vary the fluid flow by receiving a control signal from a modulation unit. The high-pressure resistant diaphragm pump is suitable for various corrosive liquids, liquid with particles, high viscosity, volatility, flammability and extremely toxic liquid, a diaphragm inside a traditional diaphragm pump main body is easily and frequently damaged after being impacted by high-pressure liquid for a long time, a medium cavity at a hydraulic end of the diaphragm pump is under a high-pressure condition, and due to the reciprocating action of a plunger, the diaphragm bears alternating stress, the diaphragm is bent forwards to deform and is tightly attached to the surface of the medium cavity, the diaphragm is easy to deform and damage due to high-pressure extrusion to influence the service life, and therefore the high-pressure resistant diaphragm pump main body is provided to solve the problems existing above.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a novel diaphragm pump.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a novel diaphragm pump, which comprises a pump body, the front end housing is installed to the top side screw thread of the pump body, the through-hole has been seted up on the top side of front end housing, slidable mounting has the plunger in the through-hole, the top of plunger extends outside the through-hole and is connected with actuating mechanism, the bottom of plunger extends to in the pump body and the fixed mounting piston, fixed mounting has the support ring on the inner wall of the pump body, install the rubber diaphragm in the support ring, medium import and medium outlet are installed respectively to the both sides of the pump body, medium import and medium outlet all are linked together with the pump body is.

Preferably, a fixing plate is installed on the bottom side of the front end cover, a plurality of first springs are fixedly installed on the bottom side of the fixing plate, the lower ends of the first springs are connected with the same upper pressing plate, and the plunger penetrates through the fixing plate and the upper pressing plate.

Preferably, the piston is sleeved with a sealing ring, and the sealing ring is connected with the inner wall of the pump body in a sliding and sealing manner.

Preferably, the rubber diaphragm is provided with a concave part and a convex protection part.

Preferably, a first one-way valve is installed in the medium inlet, a second one-way valve is installed in the medium outlet, and the flow directions of the first one-way valve and the second one-way valve are from left to right.

Preferably, a fixed cylinder is fixedly mounted on the top side of the rear end cover, a slide rod is slidably mounted in the fixed cylinder, a lower pressing plate is fixedly mounted on the top end of the slide rod and extends out of the fixed cylinder, a second spring is fixedly mounted at the bottom end of the lower pressing plate, the second spring is sleeved on the slide rod, and the bottom end of the second spring is fixedly connected with the top side of the fixed cylinder.

Compared with the prior art, the beneficial effects of the utility model are that: through setting up the holding down plate, when making the rubber diaphragm take place to the flexography, can reduce the deformation range under the effect of holding down plate, and can help the rubber diaphragm to reset, realize the protection to the rubber diaphragm, the life cycle of extension diaphragm, the surface of rubber diaphragm is provided with depressed part and protrusion protection part, when the rubber diaphragm receives the impact, its middle part intensity can be strengthened to the protrusion protection part, in order to prevent that it from being strikeed badly in long-term use, many impact rubber diaphragm's power all can be differentiated partly by the structure of depressed part simultaneously, in addition the piston can prevent to reveal, avoid direct and front end housing contact striking when the top board protection piston moves, and then the life of extension diaphragm pump, reduce the equipment maintenance cost.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a rubber diaphragm according to the present invention;

in the figure: 1. a pump body; 2. a front end cover; 3. a through hole; 4. a plunger; 5. a piston; 6. a support ring; 7. a rubber diaphragm; 8. a recessed portion; 9. a protruding guard; 10. a media inlet; 11. a first check valve; 12. a media outlet; 13. a second one-way valve; 14. a fixed cylinder; 15. a slide bar; 16. a lower pressing plate; 17. a second spring; 18. a rear end cap; 19. a fixing plate; 20. an upper pressure plate; 21. a first spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a novel diaphragm pump comprises a pump body 1, a front end cover 2 is installed on the top side of the pump body 1 in a threaded mode, a through hole 3 is formed in the top side of the front end cover 2, a plunger 4 is installed in the through hole 3 in a sliding mode, the top end of the plunger 4 extends out of the through hole 3 and is connected with a driving mechanism, the bottom end of the plunger 4 extends into the pump body 1 and is fixedly provided with a piston 5, a support ring 6 is fixedly installed on the inner wall of the pump body 1, a rubber diaphragm 7 is installed in the support ring 6, a medium inlet 10 and a medium outlet 12 are installed on two sides of the pump body 1 respectively, the medium inlet 10 and the medium outlet 12 are communicated with the interior of the pump body 1, a rear end cover 18 is installed on the bottom side of the pump body 1, when the rubber diaphragm 7 is deflected and deformed, the deformation amplitude can be reduced under the action of a lower pressure, prolong the life cycle of diaphragm, the surface of rubber diaphragm 7 is provided with depressed part 8 and protruding guard portion 9, when rubber diaphragm 7 received the impact, its middle part intensity can be strengthened to protruding guard portion 9, in order to prevent that it from being strikeed badly in long-term use, many impact rubber diaphragm's power all can be differentiated by the structure of depressed part 8 and fall partly simultaneously, piston 5 can prevent to reveal in addition, upper plate 20 avoids direct and front end housing 2 to contact the striking when protecting the piston motion, and then the life of extension diaphragm pump, reduce the equipment maintenance cost.

Specifically, a fixing plate 19 is installed on the bottom side of the front end cover 2, a plurality of first springs 21 are fixedly installed on the bottom side of the fixing plate 19, the lower ends of the plurality of first springs 21 are connected with the same upper pressing plate 20, and the plunger 4 penetrates through the fixing plate 19 and the upper pressing plate 20.

Specifically, a sealing ring is sleeved on the piston 5 and is in sliding sealing connection with the inner wall of the pump body 1.

Specifically, the rubber diaphragm 7 is provided with a concave portion 8 and a convex protection portion 9.

Specifically, a first check valve 11 is installed in the medium inlet 10, a second check valve 13 is installed in the medium outlet 12, and the flow directions of the first check valve 11 and the second check valve 13 are both from left to right.

Specifically, a fixed cylinder 14 is fixedly installed on the top side of the rear end cover 18, a sliding rod 15 is slidably installed in the fixed cylinder 14, the top end of the sliding rod 15 extends out of the fixed cylinder 14 and is fixedly installed with a lower pressing plate 16, a second spring 17 is fixedly installed at the bottom end of the lower pressing plate 16, the second spring 17 is sleeved on the sliding rod 15, and the bottom end of the second spring 17 is fixedly connected with the top side of the fixed cylinder 14.

The working principle is as follows: when the device is used, liquid enters the interior of the pump body 1 through the medium inlet 10, the driving mechanism drives the plunger 4 to move up and down, when the plunger 4 drives the piston 5 to rise to be in contact with the upper pressure plate 20, the first spring 21 can protect the piston 5, when the plunger 4 drives the piston 5 to move downwards, the piston 5 pushes hydraulic oil, the hydraulic oil pushes the rubber diaphragm 7 to deflect and deform downwards, when the rubber diaphragm 7 deflects and deforms forwards, the lower pressure plate 16 can be contacted with the lower pressure plate 16, the lower pressure plate 16 can compress the second spring 17 under the pushing action of the downward deformation force of the rubber diaphragm 7, when the elastic force of the second spring 17 is balanced with the downward deformation force of the rubber diaphragm 7, the rubber diaphragm 7 stops moving, the downward deflection deformation of the rubber diaphragm 7 cannot be caused to be tightly attached to the inner surface of the pump body 1, the deformation damage of the rubber diaphragm 7 is caused, the surface of the rubber diaphragm 7 is provided with the concave part, when the rubber diaphragm 7 is impacted, most of the force is concentrated on the middle part of the rubber diaphragm 7, the convex protection part 9 strengthens the strength of the middle part of the rubber diaphragm 7 to prevent the rubber diaphragm from being impacted and damaged in the long-term use process, when the rubber diaphragm 7 is impacted and swelled by the impact, a part of the force impacting the rubber diaphragm 7 is differentiated by the structure of the concave part 8, and the piston 5 prevents the liquid from leaking.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A novel diaphragm pump, comprising a pump body (1), characterized in that: front end housing (2) are installed to the top side screw thread of the pump body (1), through-hole (3) have been seted up on the top side of front end housing (2), slidable mounting has plunger (4) in through-hole (3), the top of plunger (4) extends to through-hole (3) outer and is connected with actuating mechanism, the bottom of plunger (4) extends to in the pump body (1) and fixed mounting piston (5), fixed mounting has support ring (6) on the inner wall of the pump body (1), install rubber diaphragm (7) in support ring (6), medium import (10) and medium export (12) are installed respectively to the both sides of the pump body (1), medium import (10) and medium export (12) all are linked together with pump body (1) inside, rear end cap (18) are installed to the bottom side of the pump body (1).

2. A novel diaphragm pump of claim 1 wherein: the fixed plate (19) is installed to the bottom side of front end housing (2), and the bottom side fixed mounting of fixed plate (19) has a plurality of first springs (21), and the low end of a plurality of first springs (21) all is connected with same top board (20), and fixed plate (19) and top board (20) are run through to plunger (4).

3. A novel diaphragm pump of claim 1 wherein: and the piston (5) is sleeved with a sealing ring, and the sealing ring is connected with the inner wall of the pump body (1) in a sliding and sealing manner.

4. A novel diaphragm pump of claim 1 wherein: and a concave part (8) and a convex protection part (9) are arranged on the rubber diaphragm (7).

5. A novel diaphragm pump of claim 1 wherein: install first check valve (11) in medium import (10), install second check valve (13) in medium export (12), the circulation direction of first check valve (11) and second check valve (13) is from left to right.

6. A novel diaphragm pump of claim 1 wherein: the top side fixed mounting of rear end cover (18) has a fixed section of thick bamboo (14), and slidable mounting has slide bar (15) in fixed section of thick bamboo (14), and the top of slide bar (15) extends to fixed section of thick bamboo (14) outer and fixed mounting has holding down plate (16), and the bottom fixed mounting of holding down plate (16) has second spring (17), and second spring (17) cover is established on slide bar (15), the bottom of second spring (17) and the top side fixed connection of fixed section of thick bamboo (14).