Pump cover and chemical diaphragm pump

Abstract

The utility model discloses a pump cover and chemical diaphragm pump. The pump cover includes cover main body, the cover main body has the first surface and second surface that are oppositely arranged and the lateral wall surface connected between the first surface and the second surface, the first surface is suitable for setting to the pump cavity, the second surface is suitable for connecting with the gas supply component, the lateral wall surface is arc-shaped setting at every transition corner. The technical scheme provided by the utility model sets the corner of pump cover more arc-shaped, can reduce the area of cover main body, thereby when the diaphragm pump is provided with multiple surfaces and multiple pump covers are arranged on every surface, the space occupied by the pump cover is smaller, and the volume of the whole diaphragm pump is also smaller.

Description

Technical Field

[0001] This utility model relates to the technical field of diaphragm pumps, specifically to a pump cover and a chemical 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, thereby 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. Because of the corresponding inlet and outlet ports on the pump cover, as well as the need to connect the suction and supply components, the traditional pump cover is relatively large. Therefore, in the case of a multi-chamber pump, this increases the overall size of the diaphragm pump and increases its cost. Utility Model Content

[0003] To address the aforementioned technical problems, the main objective of this utility model is to provide a pump cover and a chemical diaphragm pump, aiming to solve the problem that traditional pump covers are relatively large in size, which increases the overall volume and cost of the diaphragm pump in the case of multi-faceted pump chambers.

[0004] To achieve the above objectives, the present invention proposes a pump cover, comprising a cover body having a first surface and a second surface arranged opposite to each other, and a side wall surface connected between the first surface and the second surface. The first surface is adapted to face the pump cavity, the second surface is adapted to connect with an air supply assembly, and the side wall surface is arc-shaped at each transition corner.

[0005] Optionally, the cover body is square in shape with four corners, and the sidewalls are arc-shaped at each of the corners.

[0006] Optionally, a first annular region is formed on the cover body, and the first annular region is adapted to be connected to a gas supply component;

[0007] The cover body has an air inlet hole located in the first annular area and adapted to be connected to the air supply component, so that gas can be introduced from the air supply component into the air inlet hole, while the airflow in the air inlet hole cannot flow into the air supply component.

[0008] Optionally, the first annular region is circular, and the air inlet is eccentrically located on one side of the first annular region.

[0009] Optionally, a second annular region is formed on the cover body, the second annular region being adapted for connection of an air extraction assembly;

[0010] The cover body has an air outlet, which is located in the first annular area and is adapted to be connected to the air extraction component, so that gas can enter the air extraction component from the air outlet, while the airflow in the air extraction component cannot flow into the air outlet.

[0011] Optionally, a plurality of support ribs are provided inside the air outlet, and the plurality of support ribs are arranged in a radial pattern from the center of the air outlet inside the air outlet.

[0012] This utility model also provides a chemical diaphragm pump, comprising:

[0013] A pump casing, wherein an opening is provided on the pump casing;

[0014] The aforementioned pump cover is installed over the opening;

[0015] An air supply assembly is connected to the air inlet of the pump cover;

[0016] The air extraction assembly is connected to the air outlet of the pump cover.

[0017] Optionally, the gas supply assembly includes:

[0018] An air supply valve is located in the first annular area of ​​the pump cover and covers the air inlet hole, and a first channel is formed inside the air supply valve;

[0019] An air supply pipe is connected to the first end of the first channel, and the second end of the first channel is connected to the air inlet.

[0020] A first valve plate is disposed between the air supply valve and the cover body, and has a first blocking part that is movably disposed. The first blocking part has a first position for opening the first channel and a second position for blocking the first channel.

[0021] Optionally, the second end of the first channel is offset from the air inlet.

[0022] When the first blocking part is in the first position, the first blocking part and the air outlet are at least partially misaligned, so that airflow can flow from the first channel toward the air outlet; when the airflow flows in the opposite direction from the air outlet toward the first channel, the first blocking part can be pushed to the second position under the action of the airflow, so that the first blocking part blocks the second end of the first channel.

[0023] Optionally, the air extraction assembly includes:

[0024] An air extraction valve is located in the second annular area of ​​the pump cover and covers the air outlet. A second channel is formed inside the air extraction valve.

[0025] The suction pipe is connected to the first end of the second channel, and the second end of the second channel is connected to the air outlet.

[0026] The second valve plate is disposed between the air extraction valve and the cover body, and has a second blocking part that is movably disposed. The second blocking part has an opening position for opening the air outlet and a blocking position for blocking the air outlet.

[0027] When the airflow flows from the second channel toward the air outlet, the second blocking part is in the blocking position that closes the air outlet; when the airflow flows from the air outlet toward the second channel, the second blocking part can be pushed to the open position by the airflow to connect the air outlet and the second channel.

[0028] The technical solution provided by this utility model has the following beneficial effects:

[0029] The pump cover provided by this utility model includes a cover body with a first surface and a second surface arranged opposite to each other. The first surface is adapted to face the pump cavity, so that it can form a working chamber together with the diaphragm of the diaphragm pump. The second surface is the outer surface of the pump cover. The air supply component and the air extraction component can be connected to the second surface of the pump cover. The connection is located outside the pump cavity, which makes it easier to disassemble and assemble. Moreover, the side wall of the cover body is arc-shaped at each transition corner, making the side wall of the cover body smoother, less likely to scratch the operator, and more streamlined in shape. Compared with right-angle pump covers, the more arc-shaped corners of the pump cover can reduce the area of ​​the cover body. Therefore, when the diaphragm pump has multiple surfaces and multiple pump covers are provided on each surface, the space occupied by the pump covers is smaller, and the overall volume of the diaphragm pump is also smaller. Attached Figure Description

[0030] 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.

[0031] Figure 1 A schematic diagram of the structure of an embodiment of a pump cover provided by this utility model;

[0032] Figure 2 for Figure 1Another structural schematic diagram of the pump cover described in the figure;

[0033] Figure 3 A schematic diagram of an embodiment of a chemical diaphragm pump provided by this utility model;

[0034] Figure 4 for Figure 3 A cross-sectional structural diagram of the chemical diaphragm pump described herein;

[0035] Figure 5 for Figure 4 A magnified structural diagram of detail A in the middle;

[0036] Figure 6 for Figure 3 A schematic diagram of the exploded structure of the chemical diaphragm pump described herein;

[0037] Figure 7 for Figure 3 A schematic diagram of the structure of the first or second valve plate.

[0038] Explanation of icon numbers:

[0039] 100-Chemical diaphragm pump; 1-Pump cover; 11-Cover body; 111-First surface; 112-Second surface; 113-Side wall; 114-First annular region; 115-Second annular region; 12-Inlet; 13-Outlet; 14-Connecting post; 15-Annular rib; 16-Groove; 17-Limiting protrusion; 2-Gas supply assembly; 21-Gas supply valve; 211-First protrusion; 212-First channel; 22-Gas supply pipe; 23-First valve plate; 3-Suction assembly; 31-Suction valve; 311-Second protrusion; 312-Second channel; 32-Suction pipe; 33-Second valve plate; 331-Annular support; 332-Shielding part; 4-Pressure plate; 41-Limiting hole; 42-Mounting hole; 5-Pump casing.

[0040] 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

[0041] 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.

[0042] 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 specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0043] 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.

[0044] This utility model provides a pump cover 1, which is suitable for a chemical diaphragm pump 100. For details, please refer to... Figure 1 and Figure 2 In this embodiment, the pump cover 1 includes a cover body 11, the cover body 11 having a first surface 111 and a second surface 112 arranged opposite to each other, and a side wall surface 113 connected between the first surface 111 and the second surface 112. The first surface 111 is adapted to be disposed toward the pump cavity, the second surface 112 is adapted to be connected to the air supply assembly 2, and the side wall surface 113 is arranged in an arc shape at each transition corner.

[0045] In this embodiment, the cover body 11 has a first surface 111 and a second surface 112 arranged opposite to each other. The first surface 111 is adapted to face the pump cavity, so that it can form a working chamber together with the diaphragm of the diaphragm pump. The second surface 112 is the outer surface of the pump cover 1. The air supply component 2 and the air extraction component 3 can be connected to the second surface 112 of the pump cover 1. The connection is located outside the pump cavity, which makes it easier to disassemble and assemble. Moreover, the side wall surface 113 of the cover body 11 is arc-shaped at each transition corner, making the side wall surface 113 of the cover body 11 smoother, less likely to scratch the operator, and more streamlined in shape. Moreover, compared with right-angled pump covers 1, the corners of the pump cover 1 are more arc-shaped, which can reduce the area of ​​the cover body 11. Thus, when the diaphragm pump has multiple surfaces and multiple pump covers 1 are provided on each surface, the space occupied by the pump cover 1 is smaller, and the volume of the entire diaphragm pump is also smaller.

[0046] The shape of the cover body 11 is not specifically limited; for example, the cover body 11 can be triangular, polygonal, or irregularly shaped. Preferably, the cover body 11 is square with four corners, and the side wall 113 is arc-shaped at each corner. More preferably, the cover body 11 is square, and each corner of the cover body 11 has rounded chamfers of the same size. The entire pump cover 1 has a smoother and more rounded periphery, making installation easier, and its smaller area and space-saving design allow for a smaller overall size of the chemical diaphragm pump 100.

[0047] Furthermore, such as Figure 1 As shown, a first annular region 114 is formed on the cover body 11, and the first annular region 114 is adapted to be connected to the gas supply component 2. An air inlet 12 is provided on the cover body 11, the air inlet 12 is located in the first annular region 114 and is adapted to be connected to the gas supply component 2, so that gas can be introduced from the gas supply component 2 into the air inlet 12, and the airflow in the air inlet 12 cannot flow into the gas supply component 2, thereby allowing a smaller amount of air to enter at the air inlet 12 without accidentally venting the gas out.

[0048] Furthermore, a second annular region 115 is formed on the cover body 11, which is adapted to be connected to the air extraction component 3; an air outlet 13 is provided on the cover body 11, which is located within the first annular region 114 and is adapted to be connected to the air extraction component 3, so that gas can enter the air extraction component 3 from the air outlet 13, while the airflow in the air extraction component 3 cannot flow into the air outlet 13, so that the air outlet 13 can better exhaust the gas in the working chamber, and the gas will not flow in reverse.

[0049] This utility model also provides a chemical diaphragm pump 100, combined with Figure 3 and Figure 4 As shown, the chemical diaphragm pump 100 includes a pump housing 5, the aforementioned pump cover 1, an air supply component 2, and an air extraction component 3. An opening is provided on the pump housing 5, and the pump cover 1 is placed over the opening. The air supply component 2 is connected to the air inlet 12 of the pump cover 1, and the air extraction component 3 is connected to the air outlet 13 of the pump cover 1.

[0050] The chemical diaphragm pump 100 further includes a diaphragm sheet disposed at a corresponding opening and connected and fixed to the pump housing 5. A working chamber is formed between the diaphragm pump and the pump cover 1. The chemical diaphragm pump 100 delivers gas into the working chamber through the gas supply assembly 2, and then delivers the gas out of the working chamber through the agitation of the diaphragm sheet, and finally exhausts the gas through the gas extraction assembly 3.

[0051] Specifically, in combination Figure 3 , Figure 4 and Figure 6 As shown, the air supply assembly 2 includes an air supply valve 21, an air supply pipe 22, and a first valve plate 23. The air supply valve 21 is located within the first annular region 114 of the pump cover 1 and covers the air inlet 12. A first channel 212 is formed inside the air supply valve 21. The air supply pipe 22 is connected to the first end of the first channel 212, and the second end of the first channel 212 is connected to the air inlet 12. The first valve plate 23 is located between the air supply valve 21 and the cover body 11 and has a first blocking part that is movably arranged. The first blocking part has a first position for opening the first channel 212 and a second position for blocking the first channel 212. The movement of the first blocking part allows the first channel 212 and the second channel 312 to be opened or blocked. When airflow enters from the air supply pipe 22 toward the air inlet 12, the first blocking part is in the state of opening the first channel 212, allowing the airflow to be better delivered to the working chamber. When the airflow flows in the reverse direction from the air inlet 12 toward the first channel 212, the first blocking part will block the first channel 212, preventing the airflow from flowing in the reverse direction within the first channel 212. This allows the air supply valve 21 to form a one-way valve, better restricting the direction of airflow.

[0052] Furthermore, combined Figure 1 and Figure 5 As shown, the first annular region 114 is circular, and the air inlet 12 is eccentrically located on one side of the first annular region 114. Preferably, the air supply valve 21 is generally conical, with its larger end facing the pump housing 5, and the second end of the first channel 212 is opened on the larger end of the air supply valve 21, with an airflow gap between it and the pump housing 5.

[0053] Preferably, combined with Figure 1 and Figure 5As shown, the second end of the first channel 212 is located at the center of the first annular region 114, and the second end of the first channel 212 is offset from the air inlet 12. When the first blocking part is in the first position, the first blocking part is at least partially offset from the air outlet 13, allowing airflow to flow from the first channel 212 toward the air outlet 13. When the airflow flows in the opposite direction from the air outlet 13 toward the first channel 212, the airflow can push the first blocking part to the second position, causing the first blocking part to block the second end of the first channel 212. The air supply component 2 can flow more effectively toward the working chamber of the chemical diaphragm pump 100 for continuous air supply, and there will be no reverse flow of airflow within the air supply component 2, resulting in better airflow stability.

[0054] Preferably, combined with Figure 1 and Figure 2 As shown, the air intake 12 is roughly bean-shaped and at least partially arc-shaped, so that the first blocking part cannot completely block the air intake 12 when it is in the first position, thus better ensuring the air intake effect.

[0055] Regarding the air extraction component 3, combined with Figure 3 , Figure 4 and Figure 6 As shown, the air extraction assembly 3 includes an air extraction valve 31, an air extraction pipe 32, and a second valve plate 33. The suction valve 31 is located within the second annular region 115 of the pump cover 1 and covers the air outlet 13. A second channel 312 is formed within the suction valve 31. The suction pipe 32 is connected to the first end of the second channel 312, and the second end of the second channel 312 is connected to the air outlet 13. The second valve plate 33 is located between the suction valve 31 and the cover body 11 and has a movable second blocking part. The second blocking part has an open position for opening the air outlet 13 and a blocking position for blocking the air outlet 13. When the airflow flows from the second channel 312 toward the air outlet 13, the second blocking part is in the blocking position for closing the air outlet 13. When the airflow flows from the air outlet 13 toward the second channel 312, the second blocking part can be moved to the open position under the action of the airflow to connect the air outlet 13 and the second channel 312. The air extraction assembly 3 allows the airflow within the working chamber to flow more effectively along the air outlet 13 to the second channel 312 and then out through the air extraction pipe 32. Furthermore, the airflow will not flow in the opposite direction from the second channel 312 to the air outlet 13, thus better ensuring the stability of the airflow.

[0056] Preferably, such as Figure 1As shown, the air outlet 13 is located in the center of the second annular region 115, and multiple supporting ribs are provided within the air outlet 13. These supporting ribs radiate outwards from the center of the air outlet 13. Therefore, when airflow flows from the second channel 312 towards the air outlet 13, the second support portion, while blocking the air outlet 13, can be supported by the multiple supporting ribs, thus preventing the second support portion from being accidentally sucked into the working chamber.

[0057] Preferably, combined with Figure 5 and Figure 7 As shown, the arrangement of the first valve plate 23 and the second valve plate 33 can be the same. Specifically, both the first valve plate 23 and the second valve plate 33 include an annular support portion 331 and a blocking portion 332 extending from one side of the annular support portion 331 toward the center of the annular support portion. The blocking portion 332 is suspended in the center of the annular support portion 331, so it can rotate under the action of airflow. The blocking portion 332 can form the first blocking portion and the second blocking portion mentioned above. The annular support portion 331 is used to seal between the air supply valve 21 and the pump housing 5, or between the air extraction valve 31 and the pump housing 5. On the one hand, it can support the blocking portion 332, and on the other hand, it can better form a seal to avoid air leakage.

[0058] Preferably, combined with Figure 1 and Figure 3As shown, the shape of the air supply valve 21 is consistent with that of the air extraction valve 31. The first annular region 114 and the second annular region 115 are located in the middle of the cover body 11 and are arranged side by side. Two connecting posts 14 are also protruding from the first surface 111 of the cover body 11, and each of the two connecting posts 14 is provided with a threaded hole. A first protrusion 211 protrudes from the small end of the air supply valve 21, and a second protrusion 311 protrudes from the small end of the air extraction valve 31. The chemical diaphragm pump 100 also includes a pressure plate 4. The pressure plate 4 has two opposing limiting holes 41 and two opposing mounting holes 42. The first protrusion 211 and the second protrusion 311 are respectively engaged in the two limiting holes 41. The two mounting holes 42 are respectively corresponding to the two connecting posts 14. Screws or bolts are inserted into the mounting holes 42 and the corresponding threaded holes of the connecting posts 14 to connect and fix the pressure plate 4 and the connecting posts 14, thereby pressing the air supply valve 21 and the air extraction valve 31 onto the pump housing 5. The pressure plate 4 is roughly square in shape, with two limiting holes 41 located at two opposite corners of the pressure plate 4 and two mounting holes 42 located at the other two opposite corners of the pressure plate 4, making the connection more stable and reliable.

[0059] Furthermore, multiple limiting protrusions 17 are provided in both the first annular region 114 and the second annular region 115. The multiple limiting protrusions 17 are arranged in a ring around the first annular region 114 or the second annular region 115, and the multiple limiting protrusions 17 abut against the outer periphery of the air inlet valve and the air outlet valve, so that the air inlet valve and the air outlet valve can be initially limited when placed on the pump housing 5, and can then be locked by the pressure plate 4.

[0060] Among them, combined Figure 1 and Figure 3 As shown, a plurality of grooves 16 are provided on the first surface 111 of the pump cover 1. The plurality of grooves 16 are arranged in a ring-like layer, which ensures the thickness of the pump cover 1 while effectively reducing the weight of the pump cover 1.

[0061] Furthermore, an annular rib 15 is provided on the second surface 112 of the pump cover 1. The annular rib 15 can extend at least partially into the opening to press against the corresponding diaphragm, thereby better restricting the position of the diaphragm.

[0062] In one embodiment, the pump housing 5 may include a plurality of circumferentially arranged side surfaces, each of which has at least two openings. Correspondingly, a plurality of pump covers 1 are provided, with each of the pump covers 1 corresponding to one of the plurality of openings. Preferably, four circumferential side surfaces are provided, each with two openings, and correspondingly, eight pump covers 1 are provided. The air supply assembly 2 and the air extraction assembly 3 are also provided in eight sets, thereby increasing the overall working efficiency of the chemical diaphragm pump 100.

[0063] 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 cover, characterized in that, The device includes a cover body having a first surface and a second surface disposed opposite to each other, and a sidewall surface connecting the first surface and the second surface. The first surface is adapted to face the pump cavity, and the second surface is adapted to connect to the air supply assembly. The sidewall surface is arc-shaped at each transition corner.

2. The pump cover as described in claim 1, characterized in that, The main body of the cover is square with four corners, and the side wall is arc-shaped at each corner.

3. The pump cover as described in claim 1, characterized in that, The cover body has a first annular region, which is suitable for connecting a gas supply component. The cover body has an air inlet hole located in the first annular area and adapted to be connected to the air supply component, so that gas can be introduced from the air supply component into the air inlet hole, while the airflow in the air inlet hole cannot flow into the air supply component.

4. The pump cover as described in claim 3, characterized in that, The first annular region is circular, and the air inlet is eccentrically located on one side of the first annular region.

5. The pump cover as described in claim 3, characterized in that, The cover body has a second annular region, which is suitable for the connection of the air extraction component. The cover body has an air outlet, which is located in the first annular area and is adapted to be connected to the air extraction component, so that gas can enter the air extraction component from the air outlet, while the airflow in the air extraction component cannot flow into the air outlet.

6. The pump cover as described in claim 5, characterized in that, The air outlet is provided with a plurality of supporting ribs, which are arranged in a radial pattern from the center of the air outlet.

7. A chemical diaphragm pump, characterized in that, include: A pump casing, wherein an opening is provided on the pump casing; The pump cover as described in any one of claims 1 to 6 is disposed over the opening; An air supply assembly is connected to the air inlet of the pump cover; The air extraction assembly is connected to the air outlet of the pump cover.

8. The chemical diaphragm pump as described in claim 7, characterized in that, The gas supply assembly includes: An air supply valve is located in the first annular area of ​​the pump cover and covers the air inlet hole, and a first channel is formed inside the air supply valve; An air supply pipe is connected to the first end of the first channel, and the second end of the first channel is connected to the air inlet. A first valve plate is disposed between the air supply valve and the cover body, and has a first blocking part that is movably disposed. The first blocking part has a first position for opening the first channel and a second position for blocking the first channel.

9. The chemical diaphragm pump as described in claim 8, characterized in that, The second end of the first channel is offset from the air inlet; When the first blocking part is in the first position, the first blocking part and the air outlet are at least partially misaligned, so that airflow can flow from the first channel toward the air outlet; when the airflow flows in the opposite direction from the air outlet toward the first channel, the first blocking part can be pushed to the second position under the action of the airflow, so that the first blocking part blocks the second end of the first channel.

10. The chemical diaphragm pump as claimed in claim 7, characterized in that, The air extraction assembly includes: An air extraction valve is located in the second annular area of ​​the pump cover and covers the air outlet. A second channel is formed inside the air extraction valve. The suction pipe is connected to the first end of the second channel, and the second end of the second channel is connected to the air outlet. The second valve plate is disposed between the air extraction valve and the cover body, and has a second blocking part that is movably disposed. The second blocking part has an opening position for opening the air outlet and a blocking position for blocking the air outlet. When the airflow flows from the second channel toward the air outlet, the second blocking part is in the blocking position that closes the air outlet; when the airflow flows from the air outlet toward the second channel, the second blocking part can be pushed to the open position by the airflow to connect the air outlet and the second channel.

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