Pump cavity transmission assembly and diaphragm pump

Abstract

The utility model discloses a pump cavity transmission assembly and a diaphragm pump. The pump cavity transmission assembly comprises a cavity, a plurality of pump covers, a pump shaft and a plurality of transmission parts, the cavity is hollow and is provided with a plurality of peripheral side walls which are sequentially connected and distributed in the circumferential direction, cavity holes are formed in the peripheral side walls, and the cavity holes in the two oppositely-arranged peripheral side walls are oppositely arranged; the multiple pump covers cover the multiple cavity holes in a one-to-one correspondence mode. The pump shaft is at least partially arranged in the cavity in a penetrating manner; the multiple transmission parts are sequentially arranged in the cavity in the axial direction of the pump shaft, one end of each transmission part is rotationally connected to the pump shaft, the other end of each transmission part is arranged at the corresponding cavity hole in a covering mode, a working cavity is formed between the other end of each transmission part and the corresponding pump cover, and the multiple transmission parts are arranged in a consistent mode. According to the diaphragm pump, the diaphragm pump is more stable in working, less in generated vibration and noise, higher in working efficiency, more compact in structure and smaller in size.

Description

Technical Field

[0001] This utility model relates to the technical field of diaphragm pumps, specifically to a pump chamber transmission assembly and a diaphragm pump. Background Technology

[0002] A diaphragm pump is a transfer pump that uses the movement of a diaphragm to transport liquid or gaseous media. A working chamber is formed between the diaphragm and the pump cover. The reciprocating movement of the diaphragm changes the volume of the working chamber, thus drawing in and expelling liquid or gas. Each diaphragm has an outlet and an inlet; the outlet connects to an outlet pipe, and the inlet connects to an inlet pipe, thus achieving the inhalation and exhalation of gas at the diaphragm. In multi-sided pump chambers, because each side of the chamber has a diaphragm and a pump cover, the overall size of the diaphragm pump increases, increasing cost. Furthermore, because each diaphragm has radial movement, the movement of multiple diaphragms cannot be guaranteed to be stable and uniform, leading to pump vibration and unstable operation. Utility Model Content

[0003] In order to solve the above-mentioned technical problems, the main purpose of this utility model is to provide a pump chamber transmission assembly and a diaphragm pump, which aims to solve the problems of large size, high cost and unstable operation of traditional diaphragm pumps.

[0004] To achieve the above objectives, this utility model proposes a pump chamber transmission assembly, comprising:

[0005] The cavity is hollow and has multiple peripheral sidewalls arranged sequentially along the circumference. Each peripheral sidewall has a cavity hole, and the cavities on two peripheral sidewalls arranged opposite each other are arranged opposite each other.

[0006] Multiple pump covers are installed one-to-one at each of the aforementioned cavity holes;

[0007] The pump shaft is at least partially inserted into the cavity.

[0008] Multiple transmission components are arranged sequentially in the cavity along the axial direction of the pump shaft. One end of each transmission component is rotatably connected to the pump shaft, and the other end of each transmission component is covered at the corresponding cavity hole and forms a working chamber with the corresponding pump cover. The multiple transmission components are arranged in a consistent manner.

[0009] Optionally, each of the transmission components is eccentrically connected to the pump shaft; and / or,

[0010] The number of the peripheral sidewalls is even.

[0011] Optionally, each of the transmission components includes:

[0012] An eccentric component is fixedly sleeved on the outside of the pump shaft;

[0013] The bearing is sleeved on the outside of the eccentric component;

[0014] The transmission rod has one end sleeved on the outer circumference of the bearing;

[0015] A diaphragm is connected to the other end of the transmission rod and covers the corresponding cavity.

[0016] The bearings of the multiple transmission components are arranged side by side along the axial direction of the pump shaft.

[0017] Optionally, the two eccentric members of the two transmission components, which are located at the two opposing cavities, are integrally formed.

[0018] Optionally, each of the eccentric components includes a connecting post and an eccentric hole eccentrically disposed on the connecting post. The eccentric hole is sleeved on the outer peripheral side of the pump shaft, and the bearing is sleeved on the outer peripheral side of the corresponding connecting post.

[0019] Optionally, multiple cavity holes arranged on the same arc along the circumference of the cavity are set as a group, and multiple transmission components arranged corresponding to a group of cavity holes are set as a group of transmission components, and multiple transmission rods in a group of transmission components are arranged at intervals along the circumference of the pump shaft.

[0020] Optionally, multiple transmission rods in a group of transmission components are identical and all are arranged in a bent shape.

[0021] Optionally, each of the transmission rods is screwed to the corresponding diaphragm.

[0022] Optionally, each of the cavities has a groove on its periphery, each of the diaphragms has a protrusion, each protrusion is engaged in the corresponding groove, and the pump cover is pressed against the outside of the diaphragm.

[0023] This utility model also provides a diaphragm pump, including the above-mentioned pump chamber transmission assembly.

[0024] The technical solution provided by this utility model has the following beneficial effects:

[0025] The pump chamber transmission assembly provided by this utility model includes a cavity, multiple pump covers, a pump shaft, and multiple transmission components. Each pump cover is correspondingly installed on one of the multiple cavity holes of the cavity and cooperates with one of the multiple transmission components to form multiple working chambers, thereby providing multiple power sources for gas or liquid transport. Furthermore, each of the multiple transmission components is housed within the cavity and is sequentially arranged along the axial direction of the pump shaft within the cavity. One end of each transmission component is rotatably connected to the pump shaft, and the other end of each transmission component covers the corresponding cavity hole, so that under the rotational action of the same pump shaft... This device can drive multiple transmission components to move, thereby causing gas or liquid to flow within the working chamber, providing power for the flow of gas or liquid in the delivery pipeline. Furthermore, the multiple transmission components are arranged in a consistent manner, with the cavity holes on the two opposing sidewalls of the cavity also arranged opposite each other. This allows the transmission components to be symmetrically arranged on both sides of the pump shaft. Therefore, when the diaphragm pump is working, the multiple transmission components are evenly distributed, resulting in more stable operation, less vibration and noise, and higher working efficiency. Moreover, the parallel arrangement of multiple transmission components makes the structure more compact, resulting in a smaller overall size of the diaphragm pump. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0027] Figure 1 A schematic diagram of an embodiment of a diaphragm pump provided by this utility model;

[0028] Figure 2 for Figure 1 A cross-sectional structural diagram of the diaphragm pump described herein;

[0029] Figure 3 for Figure 1 Enlarged cross-sectional view of the diaphragm and pump cover as described above;

[0030] Figure 4 for Figure 1 Another cross-sectional view of the diaphragm pump described herein;

[0031] Figure 5 for Figure 1 A schematic diagram of one embodiment of the eccentric component.

[0032] Explanation of icon numbers:

[0033] 1000-Diaphragm pump; 100-Pump chamber transmission assembly; 1-Cavity; 11-Cavity hole; 12-Groove; 2-Pump cover; 3-Pump shaft; 4-Transmission component; 41-Eccentric part; 411-Connecting column; 412-Eccentric hole; 42-Bearing; 43-Transmission rod; 44-Diaphragm; 441-Protrusion.

[0034] The realization of the purpose, functional characteristics and excellent effects of this utility model will be further explained below in conjunction with specific embodiments and accompanying drawings. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] It should be noted that if the embodiments of this utility model involve directional indication, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0037] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0038] This utility model provides a pump chamber drive assembly 100, which is suitable for a diaphragm pump 1000. For details, please refer to... Figures 1 to 2In this embodiment, the pump chamber transmission assembly 100 includes a cavity 1, multiple pump covers 2, a pump shaft 3, and multiple transmission components 4. The cavity 1 is hollow and has multiple peripheral sidewalls arranged sequentially along the circumference. Each peripheral sidewall has a cavity hole 11, and the cavity holes 11 on two peripheral sidewalls arranged opposite each other are arranged oppositely. The multiple pump covers 2 are correspondingly covered at the multiple cavity holes 11. The pump shaft 3 is at least partially inserted into the cavity 1. The multiple transmission components 4 are arranged sequentially along the axial direction of the pump shaft 3 in the cavity 1. One end of each transmission component 4 is rotatably connected to the pump shaft 3, and the other end of each transmission component 4 is covered at the corresponding cavity hole 11 and forms a working chamber between it and the corresponding pump cover 2. The multiple transmission components 4 are arranged in a consistent manner.

[0039] In this embodiment, the pump cover 2 is correspondingly installed on multiple cavity holes 11 of the cavity 1 and cooperates with multiple transmission components 4 to form multiple working chambers, thereby providing multiple power sources for gas or liquid transportation. Furthermore, multiple transmission components 4 are housed within the cavity 1 and are sequentially arranged along the axial direction of the pump shaft 3 within the cavity 1. One end of each transmission component 4 is rotatably connected to the pump shaft 3, and the other end of each transmission component 4 is installed on the corresponding cavity hole 11, so that the rotation of the same pump shaft 3 can drive multiple transmission components 4 to move. The movement of each of the transmission components 4 drives the gas or liquid to flow within the working chamber, providing power for the gas or liquid to flow within the delivery pipeline. Furthermore, the multiple transmission components 4 are arranged in a consistent manner, with the cavity holes 11 on the two opposing sidewalls of the cavity 1 also arranged opposite each other. This allows the transmission components 4 to be symmetrically arranged on both sides of the pump shaft 3. Therefore, when the diaphragm pump 1000 is working, the multiple transmission components 4 are evenly distributed, resulting in more stable operation, less vibration and noise, and higher working efficiency. Moreover, the parallel arrangement of the multiple transmission components 4 makes the structure more compact, thus reducing the overall size of the diaphragm pump 1000.

[0040] To better generate suction power within each of the working chambers, preferably, each transmission component 4 has a radial travel along the pump shaft 3. The movement of each transmission component 4 causes a change in the volume of each working chamber, thereby generating suction power. Preferably, each transmission component 4 is eccentrically connected to the pump shaft 3. Rotation of the pump shaft 3 drives each transmission component 4 to generate a radial travel along the pump shaft 3, thus generating suction power. Furthermore, since the multiple transmission components 4 have identical structures and are all connected to the pump shaft 3, the working consistency of the multiple transmission components 4 is better. During operation of the diaphragm pump 1000, the entire system will not shift, resulting in better stability and more stable operation of the diaphragm pump 1000.

[0041] The cavity 1 is polygonal in shape, having multiple peripheral sidewalls. Preferably, as shown... Figure 1 As shown, the number of peripheral sidewalls is even, and more preferably, the number of peripheral sidewalls is an even number greater than or equal to 4. For example, the cavity 1 is a tetrahedron, hexahedron, octahedron, etc., so that every two peripheral sidewalls are arranged opposite each other. Therefore, the number of transmission components 4 is also an even number, which can better arrange them evenly and symmetrically along the circumference of the pump shaft 3. During operation, the forces exerted on the pump shaft 3 by the two symmetrical transmission components 4 can cancel each other out, making the pump shaft 3 more balanced and thus more stable during operation.

[0042] Specifically, in combination Figure 2 and Figure 4 As shown, for each of the transmission components 4, each transmission component 4 includes an eccentric member 41, a bearing 42, a transmission rod 43, and a diaphragm 44. The eccentric member 41 is fixedly sleeved on the outside of the pump shaft 3; the bearing 42 is sleeved on the outside of the eccentric member 41; one end of the transmission rod 43 is sleeved on the outer periphery of the bearing 42; the diaphragm 44 is connected to the other end of the transmission rod 43 and covers the corresponding cavity 11; the bearings 42 of the multiple transmission components 4 are arranged side by side along the axial direction of the pump shaft 3. The rotation of the pump shaft 3 can drive the eccentric member 41 to rotate together. Under the pushing action of the eccentric member 41, the bearing 42 is driven to produce a radial displacement along the pump shaft 3, so that the transmission rod 43 can move radially along the pump shaft 3, thereby driving the diaphragm 44 to move radially along the pump shaft 3, so as to change the volume of the working chamber. Furthermore, each of the diaphragm sheets 44 is integrally formed, and at least the portion surrounding the working chamber has elastic deformability. By moving the transmission rod 43, pressure is applied to the diaphragm sheet 44, causing the diaphragm sheet 44 to undergo elastic deformation to draw in external conveying pipes, thereby providing airflow power.

[0043] Preferably, the two eccentric members 41 of the two transmission components 4 located at the two opposing cavity holes 11 are integrally formed. Taking the cavity 1 as a tetrahedron as an example, the cavity 1 has two opposing peripheral sidewalls along the vertical direction and two opposing peripheral sidewalls along the horizontal direction. In this case, four transmission components 4 are also provided, and preferably, the four transmission components 4 are evenly spaced along the circumference of the pump shaft 3. In the two transmission components 4 connected to the two opposing cavity holes 11 along the vertical direction, the two eccentric members 41 are integrally formed. In the two transmission components 4 connected to the two opposing cavity holes 11 along the horizontal direction, the two eccentric members 41 are integrally formed. Furthermore, the eccentric directions of the two integrally formed eccentric members 41 are symmetrically arranged radially along the pump shaft 3, making the radial movement of the two transmission components 4 more consistent and symmetrical during operation, thereby resulting in a more balanced force on the pump shaft 3.

[0044] Depending on different design requirements, the number of corresponding cavity holes 11 and transmission components 4 varies. Multiple cavity holes 11 arranged on the same arc along the circumference of the cavity 1 are defined as a group, and multiple transmission components 4 corresponding to a group of cavity holes 11 are defined as a group of transmission components 4. Multiple transmission rods 43 in a group of transmission components 4 are arranged at intervals along the circumference of the pump shaft 3. Taking the cavity 1 as a tetrahedron as an example, the bearings 42 of the four transmission components 4 are arranged side-by-side sequentially along the axial direction of the pump shaft 3. Therefore, each bearing 42 is not radially aligned with its corresponding cavity hole 11. The multiple transmission rods 43 in a group of transmission components 4 are identical and all arranged in a bent shape, which better ensures the stability of the diaphragm pump 1000 operation, and also simplifies the structure and makes assembly easier.

[0045] Preferably, combined with Figure 1 and Figure 2 As shown, two sets of cavity holes 11 can be provided, and the two sets of cavity holes 11 are arranged at intervals along the axial direction of the pump shaft 3. Correspondingly, two sets of transmission components 4 are also provided, and the two sets of transmission components 4 are arranged in a one-to-one correspondence with the two sets of cavity holes 11. Moreover, the two sets of transmission components 4 are completely identical, which makes manufacturing more convenient and makes it easier to ensure the stable operation of the diaphragm pump 1000.

[0046] Specifically, in combination Figure 2 and Figure 5As shown, each of the eccentric components 41 includes a connecting post 411 and an eccentric hole 412 eccentrically disposed on the connecting post 411. The eccentric hole 412 is sleeved on the outer periphery of the pump shaft 3, and the bearing 42 is sleeved on the outer periphery of the corresponding connecting post 411. The connecting post 411 is cylindrical, and the eccentric hole 412 is through-hole disposed along the axial direction of the pump shaft 3. The bearing 42 allows one end of the transmission rod 43 to be sleeved on the outside of the connecting post 411. Thus, when the pump shaft 3 rotates, it can drive the connecting post 411 to rotate together, causing the bearing 42 to generate radial displacement along the pump shaft 3 under the action of eccentric force. This, in turn, causes the transmission rod 43 and the diaphragm 44 to generate radial displacement along the pump shaft 3.

[0047] Preferably, each of the transmission rods 43 is screwed to its corresponding diaphragm 44. Each diaphragm 44 has a connecting end and a closing end arranged opposite each other along the radial direction of the pump shaft 3. The connecting end is screwed to the transmission rod 43 to facilitate the assembly and disassembly of the diaphragm 44 and the transmission rod 43. The shape of the closing end matches the shape of the cavity 11, thereby better sealing the corresponding cavity 11. Moreover, the diaphragm 44 also includes a transition section connecting the connecting end and the closing end. The diameter of the filter section gradually increases in the radial and outward direction along the pump shaft 3. Preferably, the connecting end, the closing end, and the filter section are integrally formed, which provides better strength and is easier to manufacture.

[0048] Preferably, combined with Figure 2 and Figure 3 As shown, when the cavity 11 is circular, the closed end is a disc-shaped structure adapted to the cavity 11. Each cavity 11 has a groove 12 on its periphery, and each diaphragm 44 has a locking protrusion 441. Each locking protrusion 441 is engaged within the corresponding groove 12, and the pump cover 2 is pressed against the outer side of the diaphragm 44. Specifically, the locking protrusion 441 is annularly located at the edge of the closed end and protrudes from the side of the closed end facing the pump shaft 3. By engaging the diaphragm 44 with the periphery of its closed end on the cavity 1, the diaphragm 44 is confined to the corresponding periphery of the cavity 1. When the diaphragm 44 cannot move relative to the periphery of the cavity 1, the entire transmission component 4 will not move axially or circumferentially relative to the cavity 1 and the pump shaft 3, thus better ensuring the relative positions of the multiple transmission components 4.

[0049] Furthermore, at least a portion of each pump cover 2 can extend into the cavity 11 to press against the diaphragm 44, thereby pressing the latch 441 into the corresponding groove 12. By pressing the pump cover 2 against the corresponding diaphragm 44, the diaphragm 44 will not detach from the cavity 11. Each pump cover 2 is provided with an air inlet and an air outlet. An air inlet pipe is correspondingly connected to the air inlet, and an air outlet pipe is correspondingly connected to the air outlet. Through the agitation of the diaphragm 44, airflow can enter the working chamber from the air inlet and then flow out from the air outlet.

[0050] This utility model also provides a diaphragm pump 1000, which includes the above-mentioned pump chamber transmission assembly 100. The pump chamber transmission assembly 100 makes the overall structure of the diaphragm pump 1000 more compact, smaller in size, and lower in cost. Moreover, it is more stable during operation, less prone to shaking and displacement, and has higher working efficiency.

[0051] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structure made using the contents of the present utility model specification and drawings, or directly or indirectly applied to other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A pump chamber drive assembly, characterized by, The utility model relates to a pump cavity transmission assembly, comprising: a cavity, which is hollow and has a plurality of circumferential walls connected in sequence along the circumference, each of the circumferential walls is provided with a cavity hole, and the cavity holes on two opposite circumferential walls are opposite to each other; a plurality of pump covers, each of which corresponds to the cavity hole; a pump shaft, which is at least partially arranged in the cavity; a plurality of transmission components, which are arranged in the cavity along the axial direction of the pump shaft, one end of each of the transmission components is rotationally connected to the pump shaft, the other end of each of the transmission components is arranged in the corresponding cavity hole and forms a working chamber with the corresponding pump cover, and the plurality of transmission components are arranged in unison.

2. The pump chamber drive assembly of claim 1, wherein, Each of the transmission components is eccentrically connected to the pump shaft; and / or the number of circumferential walls is even.

3. The pump chamber drive assembly of claim 1, wherein, Each of the transmission components comprises: an eccentric part, which is fixedly sleeved on the outer side of the pump shaft; a bearing, which is sleeved on the outer side of the eccentric part; a transmission rod, one end of which is sleeved on the outer circumferential side of the bearing; a diaphragm, which is connected to the other end of the transmission rod and arranged in the corresponding cavity hole; the bearings of the plurality of transmission components are arranged side by side along the axial direction of the pump shaft.

4. The pump chamber drive assembly of claim 3, wherein, The two eccentric parts of the two transmission components arranged opposite to each other are integrally arranged.

5. The pump chamber drive assembly of claim 3, wherein, Each of the eccentric parts comprises a connecting column and an eccentric hole arranged eccentrically on the connecting column, the eccentric hole is sleeved on the outer circumferential side of the pump shaft, and the bearing is sleeved on the outer circumferential side of the corresponding connecting column.

6. The pump chamber drive assembly of claim 3, wherein, A plurality of cavity holes arranged on the same circular arc along the circumference of the cavity are set as a group, the plurality of transmission components arranged corresponding to a group of cavity holes are set as a group of transmission components, and the plurality of transmission rods in a group of transmission components are arranged at intervals along the circumference of the pump shaft.

7. The pump chamber drive assembly of claim 6, wherein, The plurality of transmission rods in a group of transmission components are consistent and are all arranged in a bent shape.

8. The pump chamber drive assembly of claim 3, wherein, Each of the transmission rods is screwed with the corresponding diaphragm.

9. The pump chamber drive assembly of claim 3, wherein, The circumferential side of each of the cavity holes is provided with a groove, each of the diaphragms is provided with a clamping protrusion, each of the clamping protrusions is clamped in the corresponding groove, and the pump cover is press-connected to the outer side of the diaphragm.

10. A diaphragm pump characterized in that, The utility model relates to a pump cavity transmission assembly, comprising: any one of claims 1 to 9.

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