Pneumatic two-way diaphragm pump

Abstract

The utility model discloses a pneumatic two-way diaphragm pump and relates to the field of water pumps. The device comprises diaphragm pump bodies, a pneumatic system is fixedly connected between the diaphragm pump bodies, a replaceable diaphragm assembly is slidably connected into the diaphragm pump bodies, a piston rod is slidably connected into the pneumatic system, a fixing plate is fixedly connected to the front end of the piston rod, and the replaceable diaphragm assembly comprises a diaphragm head, a diaphragm piece and a diaphragm back plate. One end of the diaphragm piece is fixedly connected to the diaphragm head, the other end of the diaphragm piece is fixedly connected to the diaphragm back plate, and the fixing plate is fixedly connected to the diaphragm back plate. According to the device, after the diaphragm piece is damaged after being used for a long time, the diaphragm piece can be quickly disassembled and replaced with a new diaphragm piece, the first type sealing ring and the second type sealing ring are matched with flanges to be in threaded connection, so that the sealing performance and the waterproofness are high, the anti-collision soft cushion arranged on the diaphragm pump body can reduce the speed and power of the diaphragm for impacting the side wall, and damage is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to water pump technical field, concretely is pneumatic bidirectional diaphragm pump. BACKGROUND

[0002] Pneumatic bidirectional diaphragm pump is a kind of new negative pressure diaphragm pump, pneumatic bidirectional diaphragm pump adopts compressed air, nitrogen or natural gas as power source, can pump and transport various corrosive liquid, liquid with particle, high viscosity, volatile, flammable, liquid of toxic liquid etc.Pneumatic bidirectional diaphragm pump's working principle is mainly based on the compression of gas and the reciprocating motion of diaphragm.Overall, as a kind of new conveying machinery, pneumatic bidirectional diaphragm pump has extensive application prospect.

[0003] The core component of the existing pneumatic bidirectional diaphragm pump is a diaphragm pump, but in the existing use process, due to the collision of the diaphragm with the outer cavity and the inner cavity of the diaphragm, and due to the erosion of the liquid in the pump body, the diaphragm will be damaged over time, and the existing diaphragm is difficult to install and disassemble. To solve the above problems, the utility model provides a pneumatic bidirectional diaphragm pump. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies of the prior art, the utility model provides a pneumatic bidirectional diaphragm pump, which solves the problem that the core component of the existing pneumatic bidirectional diaphragm pump is a diaphragm pump, but in the existing use process, due to the collision of the diaphragm with the outer cavity and the inner cavity of the diaphragm, and due to the erosion of the liquid in the pump body, the diaphragm will be damaged over time, and the existing diaphragm is difficult to install and disassemble.

[0005] To achieve the above purpose, the utility model is realized by the following technical scheme: a pneumatic bidirectional diaphragm pump, comprising a diaphragm pump body, a pneumatic system fixedly connected between the diaphragm pump body, a replaceable diaphragm assembly slidably connected in the diaphragm pump body, wherein a piston rod is slidably connected in the pneumatic system, and a fixed plate is fixedly connected to the front end of the piston rod, wherein the replaceable diaphragm assembly comprises a diaphragm head, a diaphragm piece and a diaphragm back plate, one end of the diaphragm piece is fixedly connected to the diaphragm head, the other end of the diaphragm piece is fixedly connected to the diaphragm back plate, and the fixed plate is fixedly connected to the diaphragm back plate.

[0006] Preferably, the diaphragm piece comprises a diaphragm outer ring, a diaphragm main body, a diaphragm inner ring and a type one sealing ring, the diaphragm outer ring is fixedly connected to the outer end of the diaphragm main body, the diaphragm inner ring is fixedly connected to the inner end of the diaphragm main body, and the type one sealing ring is fixedly connected to both ends of the diaphragm inner ring.

[0007] Preferably, the diaphragm back plate is fixedly connected with a type two sealing ring at the front end, and the diaphragm back plate is provided with a type two fixed bolt.

[0008] Preferably, a fixed sealing cavity is formed in the diaphragm head, the diaphragm inner ring is fixedly connected in the fixed sealing cavity, and the diaphragm back plate is fixedly connected in the fixed sealing cavity through the second type of fixed bolt.

[0009] Preferably, the fixed plate is provided with the first type of fixed bolt, and the fixed plate is fixedly connected to the back end of the diaphragm head through the first type of fixed bolt.

[0010] Preferably, the diaphragm pump body is fixedly connected with an anti-collision soft pad.

[0011] Preferably, the diaphragm pump body is fixedly connected with a diaphragm pump pipeline at the upper end and the lower end, the diaphragm pump pipeline is fixedly connected with an input pipe at the lower end, and the diaphragm pump pipeline is fixedly connected with an output pipe at the upper end.

[0012] The utility model discloses a pneumatic bidirectional diaphragm pump, and has the beneficial effects as follows: the pneumatic bidirectional diaphragm pump sets the diaphragm piece into replaceable diaphragm assembly, combines the diaphragm head, diaphragm piece and diaphragm back plate, can quickly disassemble and replace the new diaphragm piece when the diaphragm piece is damaged after long -term use, and the cooperation flange screw thread connection of the first type of sealing ring and the second type of sealing ring makes the sealing property and waterproof property high, and the anti -collision soft pad set up on the diaphragm pump body can slow down the speed and power of diaphragm impact side wall, and reduce damage. ACCURATE DRAWINGS

[0013] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will be briefly introduced the drawing needed to be used in the embodiment or prior art description, and obviously, the drawing in the following description is only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creating labor.

[0014] Figure 1 It is the whole front structure schematic diagram of the utility model;

[0015] Figure 2 It is the whole cross section structure schematic diagram of the utility model;

[0016] Figure 3 It is the whole structure schematic diagram of replaceable diaphragm assembly of the utility model;

[0017] Figure 4 It is the explosion structure schematic diagram of replaceable diaphragm assembly of the utility model;

[0018] Figure 5 It is the cross section structure schematic diagram of replaceable diaphragm assembly of the utility model;

[0019] Figure 6 It is the detail structure schematic diagram of replaceable diaphragm assembly of the utility model.

[0020] In the figure: 1, diaphragm pump pipeline; 11, input pipe; 12, output pipe; 2, diaphragm pump body; 21, anti-collision soft pad; 3, pneumatic system; 31, piston rod; 311, fixed plate; 312, type 1 fixed bolt; 4, replaceable diaphragm assembly; 41, diaphragm head; 411, fixed sealing cavity; 42, diaphragm piece; 421, diaphragm outer ring; 422, diaphragm main body; 423, diaphragm inner ring; 424, type 1 sealing ring; 43, diaphragm back plate; 431, type 2 sealing ring; 432, type 2 fixed bolt. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model is described clearly and completely, obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.

[0022] The embodiments of the present application provide a pneumatic bidirectional diaphragm pump, which solves the problem that the core component of the existing pneumatic bidirectional diaphragm pump is a diaphragm pump, but in the existing use process, the diaphragm collides with the diaphragm outer cavity and the diaphragm inner cavity, and the diaphragm is eroded by the liquid in the pump body, so that the diaphragm is damaged after a long time, and the existing diaphragm is difficult to install and disassemble.

[0023] In order to better understand the above technical scheme, the above technical scheme will be described in detail in combination with the drawings of the specification and specific embodiments.

[0024] The embodiments of the utility model disclose a pneumatic bidirectional diaphragm pump.

[0025] According to the drawings Figures 1-6 As shown,

[0026] The diaphragm pump body 2 is slidably connected with the replaceable diaphragm assembly 4 in the diaphragm pump body 2, wherein the piston rod 31 is slidably connected in the pneumatic system 3, and the fixed plate 311 is fixedly connected to the front end of the piston rod 31, wherein the replaceable diaphragm assembly 4 comprises a diaphragm head 41, a diaphragm piece 42 and a diaphragm back plate 43, one end of the diaphragm piece 42 is fixedly connected to the diaphragm head 41, the other end of the diaphragm piece 42 is fixedly connected to the diaphragm back plate 43, and the fixed plate 311 is fixedly connected to the diaphragm back plate 43, when the replaceable diaphragm assembly 4 is disassembled, the diaphragm head 41 and the diaphragm back plate 43 can be disassembled from the diaphragm piece 42, so that the diaphragm piece 42 can be replaced.

[0027] The diaphragm piece 42 comprises a diaphragm outer ring 421, a diaphragm main body 422, a diaphragm inner ring 423 and a type 1 sealing ring 424, the diaphragm outer ring 421 is fixedly connected to the outer end of the diaphragm main body 422, the diaphragm inner ring 423 is fixedly connected to the inner end of the diaphragm main body 422, and the type 1 sealing ring 424 is fixedly connected to both ends of the diaphragm inner ring 423. The diaphragm piece 42 is sealed by the type 1 sealing ring 424, and the type 1 sealing ring 424 is clamped in the diaphragm head 41 and the diaphragm back plate 43 respectively.

[0028] The diaphragm back plate 43 is fixedly connected with a type 2 sealing ring 431 at the front end, and the diaphragm back plate 43 is provided with a type 2 fixing bolt 432. A fixing plate 311 is provided with a type 1 fixing bolt 312, and the fixing plate 311 is fixedly connected to the back end of the diaphragm head 41 by the type 1 fixing bolt 312. The type 2 fixing bolt 432 is used for fixedly connecting the fixing plate 311, and the type 2 sealing ring 431 is used for sealing the diaphragm head 41.

[0029] The diaphragm head 41 is provided with a fixed sealing cavity 411, the diaphragm inner ring 423 is fixedly connected in the fixed sealing cavity 411, and the diaphragm back plate 43 is fixedly connected in the fixed sealing cavity 411 by the type 2 fixing bolt 432. The fixed sealing cavity 411 fixes the type 1 sealing ring 424 therein, and also serves as a connecting piece of the diaphragm head 41 and the diaphragm back plate 43, which are tightly fixed by the type 2 fixing bolt 432.

[0030] The diaphragm pump body 2 is fixedly connected with an anti-collision soft pad 21, and the diaphragm pump body 2 is fixedly connected with a diaphragm pump pipeline 1 at the upper and lower ends. The diaphragm pump pipeline 1 is fixedly connected with an input pipe 11 at the lower end, and is fixedly connected with an output pipe 12 at the upper end. The anti-collision soft pad 21 reduces the impact force of the replaceable diaphragm assembly 4 on the side wall.

[0031] Compared with the prior art, the present application has the following advantages:

[0032] The pneumatic bidirectional diaphragm pump sets the diaphragm piece 42 as a replaceable diaphragm assembly 4, and combines the diaphragm head 41, the diaphragm piece 42 and the diaphragm back plate 43, so that when the diaphragm piece 42 is damaged after long-term use, it can be quickly disassembled and replaced with a new diaphragm piece 42. The type 1 sealing ring 424 and the type 2 sealing ring 431 cooperate with the flange threaded connection to achieve high sealing and waterproof performance. The anti-collision soft pad 21 arranged on the diaphragm pump body 2 can slow down the speed and power of the diaphragm impacting the side wall, thereby reducing damage.

[0033] The basic principle and main features of the present application and the advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A pneumatic bidirectional diaphragm pump comprising a diaphragm pump body (2) between which a pneumatic system (3) is fixedly connected, characterized in that, The diaphragm pump body (2) is slidably connected with a replaceable diaphragm assembly (4); The piston rod (31) is slidably connected in the pneumatic system (3), and the front end of the piston rod (31) is fixedly connected with a fixed plate (311). The replaceable diaphragm assembly (4) comprises a diaphragm head (41), a diaphragm piece (42) and a diaphragm back plate (43). One end of the diaphragm piece (42) is fixedly connected to the diaphragm head (41), and the other end of the diaphragm piece (42) is fixedly connected to the diaphragm back plate (43), and the fixed plate (311) is fixedly connected to the diaphragm back plate (43).

2. The air-driven bidirectional diaphragm pump in accordance with claim 1, characterized in that: The diaphragm piece (42) comprises a diaphragm outer ring (421), a diaphragm main body (422), a diaphragm inner ring (423) and a type of sealing ring (424). The diaphragm outer ring (421) is fixedly connected to the outer end of the diaphragm main body (422), the diaphragm inner ring (423) is fixedly connected to the inner end of the diaphragm main body (422), and the type of sealing ring (424) is fixedly connected to both ends of the diaphragm inner ring (423).

3. The air-driven bidirectional diaphragm pump in accordance with claim 2, characterized in that: The diaphragm back plate (43) is fixedly connected with a type of sealing ring (431) at the front end, and the diaphragm back plate (43) is provided with a type of fixing bolt (432) inside.

4. The air-driven bidirectional diaphragm pump in accordance with claim 3, characterized in that: The diaphragm head (41) is provided with a fixed sealing cavity (411) inside, the diaphragm inner ring (423) is fixedly connected inside the fixed sealing cavity (411), and the diaphragm back plate (43) is fixedly connected inside the fixed sealing cavity (411) through the type of fixing bolt (432).

5. The air-driven bidirectional diaphragm pump in accordance with claim 1, characterized in that: The fixed plate (311) is provided with a type of fixing bolt (312) inside, and the fixed plate (311) is fixedly connected to the back end of the diaphragm head (41) through the type of fixing bolt (312).

6. The air-driven bidirectional diaphragm pump in accordance with claim 1, characterized in that: The diaphragm pump body (2) is fixedly connected with an anti-collision soft pad (21).

7. The air-driven bidirectional diaphragm pump in accordance with claim 1, characterized in that: The diaphragm pump body (2) is fixedly connected with a diaphragm pump pipeline (1) at both ends, the diaphragm pump pipeline (1) is fixedly connected with an input pipe (11) at the lower end, and the diaphragm pump pipeline (1) is fixedly connected with an output pipe (12) at the upper end.

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