Large-flow high-pressure process diaphragm pump

Abstract

The utility model belongs to fluid machinery, and discloses a large-flow high-pressure process diaphragm pump which comprises a motor driving mechanism, a pump body, N transmission assemblies, a pump head seat and N diaphragm pump head mechanisms, the N transmission assemblies are jointly arranged in the pump body, and each transmission assembly comprises an eccentric rotating mechanism and a plunger reciprocating mechanism. The motor driving mechanism is in transmission fit with the N eccentric slewing mechanisms at the same time, the N plunger reciprocating mechanisms are connected with the pump head base at the same time, the pump head base is connected with the N diaphragm pump head mechanisms at the same time, N independent transition flow channels are formed in the pump head base, and the N plunger reciprocating mechanisms, the N transition flow channels and the N diaphragm pump head mechanisms are in one-to-one correspondence. According to the diaphragm pump, a plurality of transmission assemblies are installed on one pump body, the plunger reciprocating mechanism and the diaphragm pump head mechanism are connected through the pump head base, the problem of communication between the inner cavity of the cylinder body and the working cavity of the pump head is solved through the transition flow channel, the size of the diaphragm pump is reduced, and the problem that the occupied space is large is solved.

Description

Technical Field

[0001] The utility model relates to the field of fluid machinery, in particular to a large-flow and high-pressure process diaphragm pump. Background Art

[0002] A diaphragm pump usually includes a motor drive mechanism, an eccentric rotating mechanism, a plunger reciprocating mechanism, a pump body, a diaphragm pump head mechanism and other structures. The motor drive mechanism drives the eccentric rotating mechanism to move, and the eccentric rotating mechanism drives the plunger in the plunger reciprocating mechanism to reciprocate. The plunger drives the diaphragm of the diaphragm pump head mechanism to deform. The deformation of the diaphragm will change the volume of the pump chamber, thereby achieving the purpose of conveying the medium.

[0003] At present, some manufacturers connect multiple diaphragm pumps in parallel to achieve large flow and high pressure. However, since each diaphragm pump has a pump body, the three pump bodies together are too large and take up too much space. Utility Model Content

[0004] The purpose of the utility model is to provide a method to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A large-flow, high-pressure process diaphragm pump, comprising a motor drive mechanism, a pump body, N transmission assemblies, a pump head seat and N diaphragm pump head mechanisms, wherein the N transmission assemblies are arranged together in the pump body, the transmission assembly comprises an eccentric rotary mechanism and a plunger reciprocating mechanism in transmission cooperation, the motor drive mechanism is simultaneously in transmission cooperation with the N eccentric rotary mechanisms, the N plunger reciprocating mechanisms are simultaneously connected to the pump head seat, the pump head seat is simultaneously connected to the N diaphragm pump head mechanisms, N independent transition flow channels are provided in the pump head seat, the N plunger reciprocating mechanisms, the N transition flow channels and the N diaphragm pump head mechanisms correspond one to one, the inner cavity of the cylinder body of the plunger reciprocating mechanism is connected to the pump head working cavity of the diaphragm pump head mechanism through the transition flow channel;

[0007] At least one of the N transmission assemblies is non-coaxially arranged with the corresponding diaphragm pump head mechanism, and the spacing between adjacent transmission assemblies is smaller than the spacing between adjacent diaphragm pump head mechanisms;

[0008] N is an integer greater than 1.

[0009] Furthermore, the N eccentric rotating mechanisms share one eccentric wheel shaft, and the eccentric wheel shaft is in transmission cooperation with the motor driving mechanism, and has N eccentric wheels arranged at intervals thereon.

[0010] Furthermore, the N pump head seats are flat plate structures, which are sandwiched between the pump body and the N diaphragm pump head mechanisms.

[0011] Furthermore, N is 3, 3 transmission assemblies are arranged side by side, and 3 diaphragm pump head mechanisms are arranged side by side.

[0012] Furthermore, an intermediate transition flow channel is provided in the middle of the pump head seat along the axial direction of the diaphragm pump, and the intermediate transition flow channel is used to connect the plunger reciprocating mechanism and the diaphragm pump head mechanism located in the middle.

[0013] Furthermore, side transition flow channels are respectively opened on both sides of the pump head seat along the horizontal radial direction of the diaphragm pump, and the side transition flow channels are used to connect the plunger reciprocating mechanism and the diaphragm pump head mechanism located on both sides.

[0014] Furthermore, N transmission assemblies are arranged side by side in the pump body.

[0015] Furthermore, N of the diaphragm pump head mechanisms are arranged closely side by side.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1) The utility model installs multiple transmission assemblies through one pump body, which has a simpler structure, reduces the volume, and solves the problem of large occupied space;

[0018] 2) The utility model connects the plunger reciprocating mechanism and the diaphragm pump head mechanism through the pump head seat, and solves the communication problem between the inner cavity of the cylinder body and the working cavity of the pump head through the transition flow channel, so that the transmission assembly on the side and the corresponding diaphragm pump head mechanism are non-coaxially installed, thereby making the overall structure of the utility model more compact and occupying less space. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model.

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model.

[0021] Figure 3 It is a schematic diagram of the pump head seat structure in the utility model.

[0022] Figure 4 It is a schematic diagram of the cross-sectional structure of the pump head seat in the utility model.

[0023] Figure 5 It is a schematic diagram of the eccentric wheel shaft structure of the utility model.

[0024] In the figure: a motor drive mechanism 1, a pump body 2, an eccentric rotating mechanism 3, an eccentric wheel shaft 300, a plunger reciprocating mechanism 4, a pump head seat 5, an intermediate transition flow channel 500, a side transition flow channel 501, a diaphragm pump head mechanism 6, and a plug 7. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-Figure 5 A large-flow, high-pressure process diaphragm pump comprises a motor drive mechanism 1, a pump body 2, three transmission assemblies, a pump head seat 5 and three diaphragm pump head mechanisms 6. The three transmission assemblies are jointly arranged in the pump body 2. The transmission assembly comprises an eccentric rotary mechanism 3 and a plunger reciprocating mechanism 4 that are transmission-coordinated. The motor drive mechanism 1 is simultaneously transmission-coordinated with the three eccentric rotary mechanisms 3. The three plunger reciprocating mechanisms 4 are simultaneously connected to the pump head seat 5. The pump head seat 5 is simultaneously connected to the three diaphragm pump head mechanisms 6. Three independent transition flow channels are provided in the pump head seat 5. The three plunger reciprocating mechanisms 4, the three transition flow channels and the three diaphragm pump head mechanisms 6 correspond one to one. The inner cavity of the cylinder of the plunger reciprocating mechanism 4 is connected to the pump head working cavity of the diaphragm pump head mechanism 6 through the transition flow channel. The middle transmission assembly is coaxially arranged with the middle diaphragm pump head mechanism 6 , the transmission assemblies on both sides are non-coaxially arranged with the diaphragm pump head mechanism 6 on the same side, and the spacing between adjacent transmission assemblies is smaller than the spacing between adjacent diaphragm pump head mechanisms 6 .

[0027] It can be understood that in the above technical solution, the utility model installs multiple transmission assemblies through a pump body 2, which has a simpler structure, reduces the volume, and solves the problem of large space occupation. And generally speaking, in the radial direction, the space occupied by the diaphragm pump head mechanism 6 is larger than the transmission assembly. If the transmission assembly and the corresponding diaphragm pump head mechanism are installed coaxially, the spacing between adjacent transmission assemblies will become larger, thereby making the pump body 2 larger. The utility model connects the plunger reciprocating mechanism 4 and the diaphragm pump head mechanism 6 through the pump head seat 5, and solves the communication problem between the inner cavity of the cylinder body and the working cavity of the pump head through the transition flow channel, so that the side transmission assembly and the corresponding diaphragm pump head mechanism 6 are non-coaxially installed, thereby making the overall structure of the utility model more compact and occupying less space.

[0028] Continue reading Figure 2 In one embodiment of the present invention, three transmission assemblies are arranged horizontally side by side, and three diaphragm pump head mechanisms 6 are also arranged horizontally side by side and close together.

[0029] Continue reading Figure 2-Figure 4In one embodiment of the utility model, the pump head seat 5 is a vertically arranged flat plate structure, which is sandwiched between the pump body 2 and the three diaphragm pump head mechanisms 6. An intermediate transition flow channel 500 is provided in the middle of the pump head seat 5 along the axial direction of the diaphragm pump, and the inner cavity of the cylinder body of the plunger reciprocating mechanism 4 located in the middle is connected with the pump head working cavity of the diaphragm pump head mechanism 6 also located in the middle through the intermediate transition flow channel 500. Side transition flow channels 501 are provided on both sides of the pump head seat 5 along the horizontal radial direction of the diaphragm pump, and the inner cavity of the cylinder body of the plunger reciprocating mechanism 4 located on both sides is connected with the pump head working cavity of the diaphragm pump head mechanism 6 also located on both sides through the side transition flow channels 501.

[0030] Among them, one end of the side transition flow channel 501 passes through to the outside of the pump head seat 5, and a plug 7 is screwed into this end of the side transition flow channel 501. When the plug 7 is rotated, the plug 7 will move in the side transition flow channel 501, thereby adjusting the medium pressure in the side transition flow channel 501.

[0031] Continue reading Figure 2 and Figure 5 In one embodiment of the present utility model, three eccentric rotating mechanisms 3 share an eccentric wheel shaft 300, and the eccentric wheel shaft 300 is in transmission cooperation with the motor drive mechanism 1, and has three eccentric wheels 301 arranged at intervals.

[0032] It should be noted that in other embodiments of the present invention, the number and arrangement of the transmission assembly and diaphragm pump head mechanism 6 can be adjusted as needed.

[0033] During operation, the motor drive mechanism 1 drives the three eccentric rotary mechanisms 3 to move at the same time, and the eccentric rotary mechanism 3 drives the plunger in the corresponding plunger reciprocating mechanism 4 to reciprocate. The plunger drives the diaphragm of the corresponding diaphragm pump head mechanism 6 to deform through hydraulic pressure. The deformation of the diaphragm will change the volume of the pump chamber, thereby achieving the purpose of conveying the medium.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-flow, high-pressure process diaphragm pump, characterized in that: The pump comprises a motor drive mechanism (1), a pump body (2), N transmission assemblies, a pump head seat (5) and N diaphragm pump head mechanisms (6), wherein the N transmission assemblies are arranged together in the pump body (2), and the transmission assembly comprises an eccentric rotary mechanism (3) and a plunger reciprocating mechanism (4) in transmission cooperation, the motor drive mechanism (1) is simultaneously in transmission cooperation with the N eccentric rotary mechanisms (3), the N plunger reciprocating mechanisms (4) are simultaneously connected to the pump head seat (5), the pump head seat (5) is simultaneously connected to the N diaphragm pump head mechanisms (6), N independent transition flow channels are provided in the pump head seat (5), the N plunger reciprocating mechanisms (4), the N transition flow channels and the N diaphragm pump head mechanisms (6) are in one-to-one correspondence, and the cylinder body cavity of the plunger reciprocating mechanism (4) is connected to the pump head working cavity of the diaphragm pump head mechanism (6) through the transition flow channel; At least one of the N transmission assemblies is non-coaxially arranged with the corresponding diaphragm pump head mechanism (6), and the spacing between adjacent transmission assemblies is smaller than the spacing between adjacent diaphragm pump head mechanisms (6); N is an integer greater than 1.

2. A high-flow, high-pressure process diaphragm pump according to claim 1, characterized in that: The N eccentric rotary mechanisms (3) share an eccentric wheel shaft (300), the eccentric wheel shaft (300) is in transmission cooperation with the motor drive mechanism (1), and has N eccentric wheels (301) arranged at intervals thereon.

3. A high-flow, high-pressure process diaphragm pump according to claim 1, characterized in that: The N pump head seats (5) are flat plate structures and are sandwiched between the pump body (2) and the N diaphragm pump head mechanisms (6).

4. A high-flow, high-pressure process diaphragm pump according to claim 1, characterized in that: The N is 3, the three transmission assemblies are arranged side by side, and the three diaphragm pump head mechanisms (6) are arranged side by side.

5. A high-flow, high-pressure process diaphragm pump according to claim 4, characterized in that: An intermediate transition flow channel (500) is provided in the middle of the pump head seat (5) along the axial direction of the diaphragm pump, and the intermediate transition flow channel (500) is used to connect the plunger reciprocating mechanism (4) and the diaphragm pump head mechanism (6) located in the middle.

6. A high-flow, high-pressure process diaphragm pump according to claim 4, characterized in that: Side transition flow channels (501) are respectively provided on both sides of the pump head seat (5) along the horizontal radial direction of the diaphragm pump, and the side transition flow channels (501) are used to connect the plunger reciprocating mechanism (4) and the diaphragm pump head mechanism (6) located on both sides.

7. A high flow and high pressure process diaphragm pump according to claim 1, characterized in that: N transmission assemblies are arranged side by side in the pump body (2).

8. A high flow and high pressure process diaphragm pump according to claim 1, characterized in that: The N diaphragm pump head mechanisms (6) are arranged closely side by side.

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