A diaphragm self-priming pump diaphragm chamber assembly and a diaphragm self-priming pump

Abstract

The utility model discloses a diaphragm self priming pump diaphragm chamber subassembly and diaphragm self priming pump belongs to diaphragm self priming pump technical field, including diaphragm chamber ontology, its one side has the discharge cavity, and its other side has a plurality of suction cavities in the discharge cavity, and a plurality of groups of fluid discharge holes are arranged in the discharge cavity and are communicated in a plurality of suction cavities respectively, at least one first discharge valve and at least one second discharge valve, the main body structure of first discharge valve is configured as sheet structure and is at least pasted in a group of fluid discharge hole end, the main body structure of second discharge valve is configured as sheet structure and is at least pasted in two groups of fluid discharge hole end, and the different discharge holes are sealed respectively through first discharge valve and second discharge valve, when one of the discharge holes is blocked, the other discharge hole can still continue normal work.

Description

Technical Field

[0001] This utility model relates to the field of diaphragm self-priming pump technology, and in particular to a diaphragm chamber assembly and a diaphragm self-priming pump. Background Technology

[0002] A diaphragm self-priming pump relies on the reciprocating movement of a diaphragm to change the volume of its working chamber, thereby drawing in and discharging fluid. Its working principle primarily involves the up-and-down movement of a swinging component, causing the valves (suction and discharge valves) within the diaphragm chamber to open and close repeatedly, creating a change in volume. As the swinging component moves, fluid flows from the low-pressure chamber to the booster chamber, then from the booster chamber to the high-pressure chamber, and finally exits from the high-pressure chamber. Existing self-priming pumps typically use multiple suction valves to seal multiple suction ports, and a single discharge valve to directly seal multiple discharge ports. Therefore, when the pre-filter in the water system fails or is absent, foreign objects can easily clog the discharge ports, causing the discharge valve to be pushed up and unable to return to its original position. This prevents the pump from sealing the discharge ports, thus rendering it ineffective at self-priming. Utility Model Content

[0003] This utility model provides a diaphragm chamber assembly and a diaphragm self-priming pump to solve the problems in the prior art.

[0004] The present invention adopts the following technical solution: a diaphragm chamber assembly for a diaphragm self-priming pump, comprising: a diaphragm chamber body having a discharge chamber on one side and a plurality of suction chambers on the other side of the discharge chamber, wherein the discharge chamber is provided with a plurality of fluid discharge holes and is respectively connected to the plurality of suction chambers; each suction chamber is provided with a plurality of fluid suction holes, and each suction chamber is equipped with a suction valve to open or close the corresponding fluid suction hole; at least one first discharge valve and at least one second discharge valve, wherein the main body structure of the first discharge valve is configured as a sheet structure and is at least attached to the end of one set of fluid discharge holes, and the main body structure of the second discharge valve is configured as a sheet structure and is at least attached to the end of two sets of fluid discharge holes.

[0005] Preferably, the main body structure of the first discharge valve includes a first valve plate and a recessed region located on the first valve plate, the first valve plate being attached to the end of a set of fluid discharge holes.

[0006] Preferably, the main body structure of the second discharge valve includes a second valve plate and a recessed region II located on the second valve plate, the second valve plate being attached to the ends of the two sets of fluid discharge holes.

[0007] Preferably, the second valve plate is provided with a first notch; the first notch divides the second valve plate into two independent valve plate structures, so that the two valve plate structures respectively fit into the ends of the corresponding two sets of fluid discharge holes.

[0008] Preferably, the discharge chamber is provided with a first positioning groove and a limiting block, the second valve plate is at least partially embedded in the first positioning groove, and the limiting block is at least partially engaged in the first notch.

[0009] Preferably, the two valve plate structures are connected by a flexible connecting part.

[0010] Preferably, the first valve plate is provided with a second notch; the discharge chamber is provided with a second positioning groove and a limiting block, the first valve plate is at least partially embedded in the second positioning groove, and the limiting block is at least partially engaged in the second notch.

[0011] Preferably, the connecting part is provided with a first valve stem, which is inserted into a first shaft hole in the discharge chamber.

[0012] Preferably, the main body of the first discharge valve is provided with a second valve stem, which is inserted into a second shaft hole in the discharge chamber.

[0013] A diaphragm self-priming pump includes: a diaphragm chamber assembly; a fluid chamber assembly mounted on the diaphragm chamber body and forming a low-pressure chamber therewith, wherein the low-pressure chamber is isolated from the discharge chamber; the fluid chamber assembly also has a plurality of push rods; each first discharge valve or second discharge valve corresponds to one push rod, and the push rod presses against the bottom surface of the discharge chamber.

[0014] Preferably, the discharge chamber is equipped with a first discharge valve and a second discharge valve, and two push rods respectively abut against the concave region one on the first discharge valve and the concave region two on the second discharge valve.

[0015] The above-mentioned technical solutions adopted in the embodiments of this utility model can achieve the following beneficial effects:

[0016] Firstly, traditional three-chamber self-priming pumps use a single discharge valve to directly seal three discharge ports. When the pre-filter in the water system fails or is absent, foreign objects can easily clog the discharge ports, causing the discharge valve to be pushed up or lifted, thus rendering the pump unable to self-prime. In this embodiment, the diaphragm chamber assembly of the diaphragm self-priming pump seals different discharge ports through a first discharge valve and a second discharge valve. When one discharge port is blocked, the others can still continue to operate normally, preventing the overall pump function from failing and greatly improving the pump's reliability under complex operating conditions.

[0017] Secondly, during maintenance, since different discharge holes are sealed by different discharge valves (first discharge valve or second discharge valve), only the damaged discharge valve needs to be replaced, which reduces maintenance costs. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0019] Figure 1 This is a three-dimensional structural diagram of the diaphragm chamber assembly of this utility model;

[0020] Figure 2 This is a three-dimensional structural diagram of the diaphragm chamber body of this utility model. Figure 1 ;

[0021] Figure 3 This is a three-dimensional structural diagram of the diaphragm chamber body of this utility model. Figure 2 ;

[0022] Figure 4 This is a three-dimensional structural diagram of the first discharge valve of this utility model;

[0023] Figure 5 This is a three-dimensional structural diagram of the second discharge valve of this utility model;

[0024] Figure 6 This is a three-dimensional structural diagram of the suction valve of this utility model;

[0025] Figure 7 This is an exploded view of the diaphragm self-priming pump of this utility model;

[0026] Figure 8 This is a three-dimensional structural diagram of the fluid chamber assembly of this utility model.

[0027] Figure Labels

[0028] 1-Diaphragm chamber body; 11-Discharge chamber; 111-Discharge hole; 112-First positioning groove; 113-Second positioning groove; 114-First shaft hole; 12-Suction chamber; 121-Suction hole; 122-Third shaft hole; 13-Limiting block; 2-Suction valve; 21-Third valve plate; 22-Third valve stem; 23-Boss; 3-First discharge valve; 31-First valve plate; 311-Second notch; 32-Concave area one; 33-Second valve stem; 34-Second shaft hole; 4-Second discharge valve; 41-Second valve plate; 411-First notch; 42-Concave area two; 43-Connecting part; 44-First valve stem; 5-Fluid chamber assembly; 51-Low pressure chamber; 52-Top rod; 6-Swinging component. Detailed Implementation

[0029] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0030] The technical solutions provided by the various embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0031] A diaphragm self-priming pump relies on the reciprocating movement of a diaphragm to change the volume of the working chamber, thereby drawing in and discharging fluid. Its working principle primarily involves the up-and-down movement of the swinging component 6, which causes the valves (suction valve 2 and discharge valve) in the diaphragm chamber to open and close repeatedly, creating a change in volume difference. As the swinging component 6 moves, fluid flows from the low-pressure chamber 51 to the booster chamber, then from the booster chamber to the high-pressure chamber, and finally exits from the high-pressure chamber. Existing three-chamber self-priming pumps typically seal three suction ports 121 with three suction valves 2 and directly seal three discharge ports 111 with one discharge valve. Therefore, when the pre-filter in the water system fails or is absent, foreign objects can easily clog the discharge ports 111, causing the discharge valve to be pushed up or lifted, thus failing to seal the discharge ports 111 and rendering the pump incapable of self-priming.

[0032] Reference Figures 1 to 7 As shown, this utility model embodiment provides a diaphragm chamber assembly for a diaphragm self-priming pump, including a diaphragm chamber body 1, a suction valve 2, a first discharge valve 3, and a second discharge valve 4.

[0033] The diaphragm chamber body 1 has a discharge chamber 11 on one side and several suction chambers 12 on the other side of the discharge chamber 11. Several sets of fluid discharge holes 111 are provided in the discharge chamber 11 and are respectively connected to the several suction chambers 12. Several fluid suction holes 121 are provided in each suction chamber 12, and a suction valve 2 is installed in each suction chamber 12 to open or close the corresponding fluid suction hole 121. There is at least one first discharge valve 3 and at least one second discharge valve 4. The main body structure of the first discharge valve 3 is configured as a sheet structure and is attached to at least one set of fluid discharge holes 111 ends. The main body structure of the second discharge valve 4 is configured as a sheet structure and is attached to at least two sets of fluid discharge holes 111 ends.

[0034] The diaphragm self-priming pump relies on the reciprocating movement of the diaphragm to change the volume of the working chamber, thereby drawing in and discharging fluid. Specifically, the oscillating component 6 oscillates up and down, causing the valves (suction valve 2 and discharge valve) in the diaphragm chamber to open and close repeatedly, resulting in a change in volume difference. The movement of the oscillating component 6 causes the suction valve 2 to open, allowing fluid to enter the booster chamber (i.e., suction chamber 12) from the low-pressure chamber 51 through the fluid suction holes 121 in each suction chamber 12. The fluid in the suction chamber 12 then flows through the connected fluid discharge holes 111, and under the control of the discharge valve, from the booster chamber into the high-pressure chamber (i.e., discharge chamber 11), and finally exits from the high-pressure chamber.

[0035] Traditional three-chamber self-priming pumps use a single discharge valve to directly seal three discharge ports 111. When the pre-filter of the water system fails or is absent, the discharge ports 111 are easily clogged with foreign objects, causing the discharge valve to be pushed up or lifted, thus causing the pump to lose its self-priming function. In this embodiment, the diaphragm chamber assembly of the diaphragm self-priming pump seals different discharge ports 111 respectively through the first discharge valve 3 and the second discharge valve 4. When one discharge port 111 is blocked, the other discharge ports 111 can still continue to work normally, preventing the overall pump function from failing and greatly improving the pump's reliability under complex operating conditions.

[0036] In addition, during maintenance, since different discharge ports 111 are sealed by different discharge valves, only the damaged discharge valve needs to be replaced, which reduces maintenance costs.

[0037] The suction valve 2 is prior art in this field and can be referenced. Figure 1 , Figure 3 and Figure 6 As shown, it includes: a third valve plate 21, made of flexible material, located in the corresponding suction chamber 12 and abutting against the fluid suction port 121; a third valve stem 22, axially connected to the third valve plate 21 and inserted into the third shaft hole 122 on the side of the corresponding suction chamber 12; and a boss 23, connected to the end of the third valve stem 22 and abutting against the side of the diaphragm chamber body 1 located in the low-pressure chamber 51.

[0038] Reference Figure 1 , Figure 4 and Figure 5 As shown, in some practical applications, the main structure of the first discharge valve 3 includes a first valve plate 31 and a recessed area 32 on the first valve plate 31, with the first valve plate 31 fitting against the end of a set of fluid discharge holes 111. In other practical applications, the main structure of the second discharge valve 4 includes a second valve plate 41 and a recessed area 42 on the second valve plate 41, with the second valve plate 41 fitting against the ends of two sets of fluid discharge holes. The two independent valve plate structures can independently seal and control the two sets of fluid discharge holes 111. When one set of discharge holes 111 becomes blocked or has other problems, it will not affect the normal operation of the other set of valve plate structures for the corresponding discharge hole 111, further improving the reliability and stability of the pump. The recessed areas 32 and 42 facilitate the installation or removal of the first discharge valve 3 or the second discharge valve 4 by maintenance personnel or workers.

[0039] In addition, the first discharge valve 3 is fitted with one set of fluid discharge holes 111, and the second discharge valve 4 is fitted with two sets of fluid discharge holes 111. These two types of discharge valves can be flexibly combined and configured according to actual flow requirements. In scenarios with low flow requirements, the use of the second discharge valve 4 can be reduced; while in scenarios with high flow requirements, the number of second discharge valves 4 can be increased or the two types of discharge valves can be reasonably combined to enable the pump to better adapt to different working requirements.

[0040] In some practical applications, based on the structure of the second discharge valve 4 described above: (Refer to...) Figure 1 , Figure 2 and Figure 5 As shown, the second valve plate 41 has a first notch 411; the first notch 411 divides the second valve plate 41 into two independent valve plate structures, so that the two valve plate structures respectively fit into the ends of the corresponding two sets of fluid discharge holes 111. The two valve plate structures are connected by a flexible connecting part 43, the thickness of which is less than the thickness of the valve plate structure, and the concave region 42 is the upper region of the connecting part 43. The flexible connecting part 43 allows the two valve plate structures to move relatively independently during operation, while maintaining a certain connection relationship, so as to better adapt to pressure changes and vibrations around the discharge holes 111 and reduce damage and leakage that may be caused by rigid connection.

[0041] Regarding the connection method between the second discharge valve 4 and the discharge chamber 11: refer to... Figure 1 , Figure 2 and Figure 5 As shown, in some practical applications, based on the structure of the second discharge valve 4 described above, a first positioning groove 112 and a limiting block 13 are provided in the discharge chamber 11. The second valve plate 41 is at least partially embedded in the first positioning groove 112, and the limiting block 13 is at least partially engaged in the first notch 411. The first positioning groove 112 provides a precise installation position for the second valve plate 41, and the limiting block 13 engaging in the first notch 411 further restricts the position and angle of the second valve plate 41 within the discharge chamber 11.

[0042] Regarding the connection method between the first discharge valve 3 and the discharge chamber 11: Refer to Figure 1 , Figure 2 and Figure 4 As shown, in some practical applications, based on the structure of the first discharge valve 3 described above, the first valve plate 31 is provided with a second notch 311; the discharge chamber 11 is provided with a second positioning groove 113 and a limiting block 13, the first valve plate 31 is at least partially embedded in the second positioning groove 113, and the limiting block 13 is at least partially engaged in the second notch 311. The second positioning groove 113 provides a precise installation position for the first valve plate 31, and the limiting block 13 engages in the second notch 311, further restricting the position and angle of the first valve plate 31 within the discharge chamber 11.

[0043] In some practical applications, refer to Figure 2 and Figure 5 As shown, a first valve stem 44 is provided on the connecting part 43, and the first valve stem 44 is inserted into the first shaft hole 114 in the discharge chamber 11. In some other practical applications, refer to Figure 2 and Figure 4 As shown, the main structure of the first discharge valve 3 is provided with a second valve stem 33, which is inserted into the second shaft hole 34 in the discharge chamber 11. During assembly, the design of the first valve stem 44 and the first shaft hole 114 provides positioning and guidance for the installation of the second discharge valve 4, making installation more convenient and quick. The second valve stem 33 on the main structure of the first discharge valve 3, inserted into the second shaft hole 34 in the discharge chamber 11, also provides reliable guidance for the movement of the first discharge valve 3.

[0044] Reference Figures 1 to 8 As shown, a diaphragm self-priming pump includes at least the diaphragm chamber assembly and the fluid chamber assembly 5 as described above.

[0045] The fluid chamber assembly 5 is mounted on the diaphragm chamber body 1 and forms a low-pressure chamber 51 therewith, and the low-pressure chamber 51 is isolated from the discharge chamber 11; the fluid chamber assembly 5 also has a plurality of push rods 52; each first discharge valve 3 or second discharge valve 4 corresponds to one push rod 52, and the push rod 52 presses against the bottom surface of the discharge chamber 11. Specifically, the discharge chamber 11 is equipped with one first discharge valve 3 and one second discharge valve 4, that is, there are a total of two discharge valves, and the two push rods 52 respectively abut against the concave area 32 on the first discharge valve 3 and the concave area 42 on the second discharge valve 4, and the two push rods 52 are respectively facing the first valve stem 44 and the second valve stem 33.

[0046] The diaphragm self-priming pump consists of a diaphragm chamber assembly and a fluid chamber assembly 5. The fluid chamber assembly 5 is mounted on the diaphragm chamber body 1 to form a low-pressure chamber 51, and the low-pressure chamber 51 is isolated from the discharge chamber 11. This design ensures that the fluid flows in the pump along a predetermined path and avoids interference between fluids in different pressure zones.

[0047] Each first discharge valve 3 or second discharge valve 4 corresponds to a push rod 52, which presses the discharge valve against the bottom surface of the discharge chamber 11. When the pump is working, the fluid in the discharge chamber 11 has a certain pressure. The pressing action of the push rod 52 can enhance the fit between the discharge valve and the bottom surface of the discharge chamber 11, preventing fluid from leaking from the gap between the discharge valve and the discharge chamber 11.

[0048] The push rod 52 presses against the concave regions 32 and 42 of the discharge valve, and is directly opposite the first valve stem 44 and the second valve stem 33, respectively. This arrangement helps to stabilize the movement of the discharge valve. When the swinging component 6 (which is prior art in the art, generally a blower motor) drives the diaphragm chamber to work, and the discharge valve needs to open or close the discharge port 111, the push rod 52 can constrain the movement of the discharge valve (first discharge valve 3 or second discharge valve 4), making the operation of the discharge valve smoother. At the same time, since the lower part of the concave regions 32 and 42 is relatively thin, it is also easier for the first valve plate 31 and the second valve plate 41 to be pushed up or flipped up more easily when squeezed by the fluid in the suction chamber 12, so as to allow the fluid to enter the discharge chamber 11.

[0049] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A diaphragm self-priming pump diaphragm chamber assembly, characterized by, include: The diaphragm chamber body (1) has a discharge chamber (11) on one side and several suction chambers (12) on the other side of the discharge chamber (11). Several sets of fluid discharge holes (111) are provided in the discharge chamber (11) and are respectively connected to several suction chambers (12). Several fluid suction holes (121) are provided in each suction chamber (12), and a suction valve (2) is installed in each suction chamber (12) to open or close the corresponding fluid suction hole (121). At least one first discharge valve (3) and at least one second discharge valve (4), wherein the main body structure of the first discharge valve (3) is configured as a sheet structure and is at least attached to the end of a set of fluid discharge holes (111), and the main body structure of the second discharge valve (4) is configured as a sheet structure and is at least attached to the end of two sets of fluid discharge holes (111).

2. The diaphragm chamber assembly of a diaphragm self-priming pump according to claim 1, characterized in that, The main structure of the first discharge valve (3) includes a first valve plate (31) and a recessed area (32) located on the first valve plate (31), the first valve plate (31) being attached to the end of a set of fluid discharge holes (111).

3. The diaphragm chamber assembly of a diaphragm self-priming pump according to claim 1, characterized in that, The main structure of the second discharge valve (4) includes a second valve plate (41) and a recessed area (42) located on the second valve plate (41). The second valve plate (41) is attached to the ends of the two sets of fluid discharge holes.

4. The diaphragm chamber assembly of a diaphragm self-priming pump according to claim 3, characterized in that, The second valve plate (41) is provided with a first notch (411); the first notch (411) divides the second valve plate (41) into two independent valve plate structures, so that the two valve plate structures are respectively attached to the ends of the corresponding two sets of fluid discharge holes (111).

5. A diaphragm chamber assembly for a diaphragm self-priming pump according to claim 4, characterized in that, The discharge chamber (11) is provided with a first positioning groove (112) and a limiting block (13). The second valve plate (41) is at least partially embedded in the first positioning groove (112), and the limiting block (13) is at least partially embedded in the first notch (411).

6. A diaphragm chamber assembly for a diaphragm self-priming pump according to claim 4, characterized in that, The two valve plate structures are connected by a flexible connecting part (43).

7. A diaphragm chamber assembly for a diaphragm self-priming pump according to claim 2, characterized in that, The first valve plate (31) is provided with a second notch (311); the discharge chamber (11) is provided with a second positioning groove (113) and a limiting block (13), the first valve plate (31) is at least partially embedded in the second positioning groove (113), and the limiting block (13) is at least partially embedded in the second notch (311).

8. A diaphragm chamber assembly for a diaphragm self-priming pump according to claim 6, characterized in that, A first valve stem (44) is provided on the connecting part (43), and the first valve stem (44) is inserted into the first shaft hole (114) in the discharge chamber (11).

9. A diaphragm chamber assembly for a diaphragm self-priming pump according to claim 1, characterized in that, The main body of the first discharge valve (3) is provided with a second valve stem (33), which is inserted into the second shaft hole (34) in the discharge chamber (11).

10. A diaphragm self-priming pump, characterized in that, include: The diaphragm chamber assembly as described in any one of claims 1-9; The fluid chamber assembly (5) is installed on the diaphragm chamber body (1) and forms a low-pressure chamber (51) therewith, and the low-pressure chamber (51) is isolated from the discharge chamber (11); the fluid chamber assembly (5) also has a number of push rods (52); each first discharge valve (3) or second discharge valve (4) corresponds to a push rod (52), and the push rod (52) presses against the bottom surface of the discharge chamber (11).

11. A diaphragm self-priming pump according to claim 10, characterized in that, The discharge chamber (11) is equipped with a first discharge valve (3) and a second discharge valve (4), and two push rods (52) respectively abut against the concave area one (32) on the first discharge valve (3) and the concave area two (42) on the second discharge valve (4).

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