Adjustable flow electric diaphragm pump

Abstract

The present application relates to the technical field of diaphragm pump, in particular to an adjustable flow electric diaphragm pump, which comprises a pump body, a water inlet pipe and a water outlet pipe installed on the pump body, and a filter assembly, which comprises a filter box installed at the water inlet pipe of the pump body, two first filter screens fixedly installed on a sliding frame, and the sliding frame sliding along the water flow direction; an adjusting assembly, which comprises a first return pipe connected between the water inlet pipe and the water outlet pipe, a three-way adjusting ball valve arranged on the first return pipe, a second return pipe connected between the water outlet pipe and the first return pipe, and a pressure relief valve arranged on the first return pipe. The opening and closing degree of the three-way adjusting ball valve is controlled through remote signal input, so as to adjust the size of the outlet flow. The outlet pipeline is connected with a stabilizer, the stabilizer is used to stabilize the pressure in the pipeline, and the stable delivery of the medium is realized. In addition, the solid impurities in the delivered medium are filtered out by the filter box and collected. The filtering mode adopts water flow reversing, so that the cost of impurity removal is reduced.

Description

Technical Field

[0001] This invention relates to the field of diaphragm pump technology, and more specifically to an adjustable flow electric diaphragm pump. Background Technology

[0002] Electric diaphragm pumps are a new type of pump. Due to breakthroughs in diaphragm materials, they are used in industries such as petrochemicals, ceramics, and metallurgy. Their key features include no need for priming and strong self-priming capability. By directly separating the pumped medium from the transmission mechanical components, there is absolutely no possibility of leakage.

[0003] Typically, electric diaphragm pumps rely on frequency converters to control variable frequency motors, adjusting the pump speed to regulate the outlet flow rate. However, the investment cost of frequency converters and variable frequency motors is too high, and frequency converters themselves have a certain failure rate. Secondly, since the application scenarios often involve solid-liquid mixtures, the diaphragm in the pump can squeeze impurities when deformed, which not only damages the diaphragm but also affects the conveying efficiency. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides an adjustable flow electric diaphragm pump, which can effectively solve the problems of high adjustment cost of flow rate and susceptibility of the diaphragm to impurities in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] This invention provides an adjustable flow electric diaphragm pump, comprising a pump body and an inlet pipe and an outlet pipe mounted on the pump body, characterized in that it further comprises:

[0007] The filtration assembly includes a filter box installed at the water inlet pipe of the pump body. The filter box is slidably mounted with a sliding frame, and two first filter screens are fixedly mounted on the sliding frame. The sliding frame slides in the direction of water flow, and a collection box is provided on the bottom wall of the filter box.

[0008] The regulating assembly includes a first return pipe connected between the inlet pipe and the outlet pipe, a three-way regulating ball valve on the first return pipe, a second return pipe connected between the inlet pipe and the first return pipe, and a pressure relief valve on the second return pipe.

[0009] Furthermore, a three-way regulating ball valve is provided at the connection between the outlet pipe and the first return pipe, through which the outlet pipe is guided to the inlet pipe.

[0010] Furthermore, a manual ball valve is provided on the water outlet pipe, and a pressure regulator is provided at the top of the manual ball valve, and an air filter pressure reducing valve is provided at the top of the pressure regulator.

[0011] Furthermore, a pressure gauge is installed on the water outlet pipe.

[0012] Furthermore, two connecting pipes are symmetrically connected to both sides of the filter box, and two diversion pipes are provided at the bottom of the pump body. The two connecting pipes are connected to the two diversion pipes in a one-to-one correspondence.

[0013] Furthermore, the filter box is provided with two second wedge blocks, and the two second wedge blocks are located near the two diversion pipes in a one-to-one correspondence. A connecting plate is fixedly installed on the side of the two first filter screens that are far apart from each other. A telescopic rod is fixedly installed on the bottom wall of the two connecting plates, and a first scraper is fixedly installed at the bottom end of the telescopic rod.

[0014] Furthermore, a guide groove is provided on the inner wall of the filter box, and the first scraper is slidably installed in the guide groove. The guide groove is in the shape of an obtuse triangle and includes a first inclined groove, a second inclined groove, and a flat groove. A first one-way plate is rotatably installed at the connection between the first inclined groove and the flat groove, and a second one-way plate is rotatably installed at the connection between the first inclined groove and the second inclined groove.

[0015] Furthermore, a second scraper is slidably installed on the side wall of the first filter screen. When the first filter screen is close to the water inlet pipe, the second scraper moves down along the first filter screen. When the first filter screen is away from the water inlet pipe, the second scraper moves up along the first filter screen. A first wedge block is provided on the side of the two first filters screens that are close to each other.

[0016] Furthermore, a second filter screen is slidably mounted on the bottom wall of the first filter screen, and a return spring is provided at the sliding connection.

[0017] Furthermore, a first magnet is installed on each of the two connecting plates, a detection box is provided on the top wall of the filter box, a second magnet is elastically installed in the detection box, and the first magnet and the second magnet repel each other. A pressure switch is provided on the inner top wall of the detection box, and the first magnet pushes the second magnet upward through the repulsive force to trigger the pressure switch.

[0018] The technical solution provided by this invention has the following advantages compared with the known prior art:

[0019] The opening and closing degree of the three-way regulating ball valve is controlled by remote signal input to adjust the outlet flow rate. It can also be manually controlled on site. The outlet pipeline is connected to a pressure stabilizer, which controls the pressure inside the pipeline to achieve stable delivery of the medium. Secondly, the solid impurities in the delivered medium are filtered out and collected by a filter box. The filtration is achieved by reversing the water flow, which reduces the cost of impurity removal. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0021] Figure 1 This is an overall schematic diagram from the left side of the present invention;

[0022] Figure 2 This is an overall schematic diagram from the right side view of the present invention;

[0023] Figure 3 This is a schematic diagram of the internal structure of the filter box.

[0024] Figure 4 This is a schematic diagram of the structure of the first filter section;

[0025] Figure 5 This is a structural schematic diagram of the guide groove section;

[0026] Figure 6 This is a front view of the first filter section;

[0027] Figure 7 This is a top view of the second filter section;

[0028] Figure 8 This is a diagram showing the movement of the first filter screen during water absorption.

[0029] The labels in the diagram represent: 1. Pump body; 2. Filter box; 3. Inlet pipe; 4. Outlet pipe; 5. First return pipe; 6. Second return pipe; 7. Pressure relief valve; 8. Manual ball valve; 9. Three-way regulating ball valve; 10. Pressure stabilizer; 11. Air filter pressure reducing valve; 12. Pressure gauge; 13. Collection box; 14. Connecting pipe; 15. Diverter pipe; 16. Threaded pipe; 17. Sealing ring; 18. Sliding frame; 19. First filter screen; 20. 21. Connecting plate; 22. First magnet; 23. Telescopic rod; 24. First scraper; 25. Second inclined groove; 26. Flat groove; 27. First one-way plate; 28. Second one-way plate; 29. ​​First wedge block; 30. Second scraper; 31. Second slider; 32. Second slide groove; 33. Third slide groove; 34. Second filter screen; 35. Fourth slide groove; 36. Second magnet; 37. Press switch; 38. Second wedge block. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0031] The present invention will be further described below with reference to embodiments.

[0032] Example: To solve the problems mentioned above, such as Figure 1 and Figure 2 As shown, an adjustable flow electric diaphragm pump is proposed, including a pump body 1 and an inlet pipe 3 and an outlet pipe 4 installed on the pump body 1. The pump body 1 is equipped with a flow regulation component, which includes a first return pipe 5 connected between the inlet pipe 3 and the outlet pipe 4. A three-way regulating ball valve 9 is provided on the first return pipe 5. A second return pipe 6 is connected between the outlet pipe 4 and the first return pipe 5. A pressure relief valve 7 is provided on the second return pipe 6. This pressure relief valve 7 is also used to regulate the internal pressure of the pump body 1. Under normal circumstances, the pressure relief valve 7 is closed. It only opens when the pressure of the pump body 1 exceeds a set value (the specific set value can be adjusted according to the actual application scenario). The medium flows back to the inlet pipe 3, the outlet pipe 4, and the first return pipe 5 through the second return pipe 6. A three-way regulating ball valve 9 is provided at the connection point. The outlet pipe 4 is guided to the inlet pipe 3 through the three-way regulating ball valve 9. The three-way regulating ball valve 9 here is a T-type three-way ball valve. Normally, it is closed when facing downwards. When it is necessary to reduce the outlet flow, it is opened slightly downwards, and the outlet direction will be closed slightly. In this way, the medium at the outlet will enter the inlet pipe 3 through the first return pipe 5, so as to achieve the function of pressure relief. Compared with simply reducing the flow of the outlet pipe 4, the three-way regulating ball valve 9 sends a part of the flow in the outlet pipe 4 back to the inlet pipe 3, thereby preventing the accumulation of pressure inside the pump body 1. A manual ball valve 8 is provided on the outlet pipe 4. A pressure regulator 10 is provided at the top of the manual ball valve 8, and an air filter pressure reducing valve 11 is provided at the top of the pressure regulator 10. A pressure gauge 12 is provided on the outlet pipe 4.

[0033] like Figure 1 As shown in the diagram and the component description above, the pump body 1 has the function of controlling the outlet flow rate. When the electric diaphragm pump is running, the opening and closing degree of the three-way regulating ball valve 9 is controlled by remote (4-20MA) signal input to adjust the size of the outlet flow rate. It can also be manually controlled on site.

[0034] like Figure 2As shown, a pressure gauge 12 is connected to one side of the outlet pipe 4 of the pump body 1, which can be used to observe the internal pressure of the outlet pipe 4 in real time. The pressure gauge 12 is a common model on the market, and the specific adjustment is made according to the actual needs.

[0035] like Figure 2 As shown, a pressure regulator 10 is connected at outlet pipe 4. The pressure regulator 10 controls the pressure inside outlet pipe 4 to stabilize the medium and achieve stable delivery. The pressure regulator 10 mainly consists of the following three parts:

[0036] Pressure regulating valve: Used to automatically regulate water pressure. When the water pressure exceeds or falls below the set range, the pressure regulating valve will open or close accordingly.

[0037] Air filter pressure reducing valve 11: Used to reduce excessive water pressure and ensure that water pressure does not damage pipes or equipment.

[0038] Regulating valve: It controls the water flow and pressure to keep the water pressure within a stable range.

[0039] Their job duties are as follows:

[0040] When the water pressure is too high, the water pressure entering the pressure regulator 10 exceeds the set range, and the pressure regulating valve will automatically open to direct the excess water flow to the inlet pipe 3, thereby reducing the water pressure. When the water pressure is insufficient, the water pressure is lower than the set range, the pressure regulating valve will close, and the regulating valve will increase the water flow or adjust the pressure to restore the water pressure to the appropriate range.

[0041] Dynamic adjustment: The pressure regulator 10 automatically adjusts the working status of its internal components by monitoring water pressure changes in real time to ensure that the water pressure remains stable.

[0042] The pump body 1 also includes a filter assembly for screening solid impurities, such as... Figure 3 As shown, its components include a filter box 2 installed at the inlet pipe 3 of the pump body 1. Two connecting pipes 14 are symmetrically connected to both sides of the filter box 2, and filter screens are installed at the two connecting pipes 14. Two diversion pipes 15 are provided at the bottom of the pump body 1, and the two connecting pipes 14 are connected to the two diversion pipes 15 one-to-one. A sliding frame 18 is slidably installed on the filter box 2, and two first filter screens 19 are fixedly installed on the sliding frame 18. The sliding frame 18 slides following the water flow direction. A collection box 13 is provided on the bottom wall of the filter box 2. A disassembly assembly is provided between the collection box 13 and the filter box 2. The disassembly assembly can be achieved using bolts or other means to facilitate the subsequent removal of the collection box 13 to remove the solid impurities collected inside. Figure 3As shown, the filter box 2 is provided with two second wedge blocks 38, and the two second wedge blocks 38 are located near the two diversion pipes 15 in a one-to-one correspondence. The two first filter screens 19 are located on opposite sides and are fixedly installed with connecting plates 20. Telescopic rods 22 are fixedly installed on the bottom walls of the two connecting plates 20. A first scraper 23 is fixedly installed at the bottom end of the telescopic rod 22. A guide groove is opened on the inner wall of the filter box 2. The first scraper 23 is slidably installed in the guide groove. The guide groove is obtuse-angled triangular in shape (e.g., ...). Figure 5 As shown), it includes a first inclined groove 24, a second inclined groove 25, and a flat groove 26. A first one-way plate 27 is rotatably installed at the connection between the first inclined groove 24 and the flat groove 26. A second one-way plate 28 is rotatably installed at the connection between the first inclined groove 24 and the second inclined groove 25. A second scraper 30 is slidably installed on the side wall of the first filter screen 19. Figure 6 As shown, a third groove 33 is provided on the first filter screen 19, and a third slider adapted to the third groove 33 is provided on the second scraper 30. When the first filter screen 19 is close to the water inlet pipe 3, the second scraper 30 moves downward along the first filter screen 19. A second slider 31 is provided on the second scraper 30. A second groove 32 adapted to the second slider 31 is provided on the inner wall of the filter box 2. When the first filter screen 19 is away from the water inlet pipe 3, the second scraper 30 moves upward along the first filter screen 19. A first wedge block 29 is provided on the side where the two first filter screens 19 are close to each other. A second filter screen 34 is slidably installed on the bottom wall of the first filter screen 19, and a return spring is provided at the sliding connection. Figure 6 and Figure 7 As shown, a fourth slider is provided on the bottom wall of the first filter screen 19, and a fourth slide groove 35 is provided on the second filter screen 34, with a reset spring disposed in the fourth slide groove 35.

[0043] like Figure 1 As shown, the pump body 1 is equipped with two diaphragms. According to the working principle of the diaphragm pump, the two diaphragms work intermittently, that is... Figure 1 Two branch pipes 15 are connected between the inlet pipe 3 and the pump body 1. The two branch pipes 15 draw water intermittently.

[0044] As described above, the diversion pipe 15 intermittently draws water, meaning the water flow direction changes intermittently. Under the impact of the water flow, the two first filter screens 19 are intermittently impacted, causing them to slide back and forth. During this sliding process, solid impurities are filtered and collected.

[0045] Specifically, in combination Figure 4 and Figure 5As can be seen, under the guidance of the guide grooves (first inclined groove 24, second inclined groove 25, and flat groove 26), when the first filter screen 19 moves away from the inlet pipe 3, that is, when the first filter screen 19 is impacted by the water flow and approaches the corresponding diversion pipe 15, the first scraper 23 slides along the second inclined groove 25 and flat groove 26. When the first filter screen 19 approaches the inlet pipe 3, that is, moves away from the corresponding diversion pipe 15, the first scraper 23 slides along the first inclined groove 24 and along the second wedge block 38, scraping the impurities accumulated at the second wedge block 38 into the collection box 13. It is worth noting that when the first filter screen 19 moves away from the corresponding diversion pipe 15, the first filter screen 19 will also move away from the second wedge block 38 along with the second filter screen 34, thereby opening the connection between the collection box 13 and the filter box 2. The overall filtration and collection process can be seen from... Figure 8 see.

[0046] Other examples Figure 3 As shown, the connecting pipe 14 and the diversion pipe 15 are connected by a threaded pipe 16, wherein the threaded pipe 16 is movably sleeved on the connecting pipe 14, and the size of the end of the connecting pipe 14 gradually increases. The inner wall of the threaded pipe 16 is provided with a matching groove. As the threaded pipe 16 and the diversion pipe 15 are driven, the threaded pipe 16 gradually moves towards the diversion pipe 15, and the groove and the end of the connecting pipe 14 are gradually pressed together. This connection method can be replaced and adjusted according to the actual situation. The diversion pipe 15 is provided with a sealing ring 17.

[0047] Both connecting plates 20 are equipped with a first magnet 21. A detection box is provided on the top wall of the filter box 2. A second magnet 36 is elastically installed in the detection box. The first magnet 21 and the second magnet 36 repel each other. A pressure switch 37 is provided on the inner top wall of the detection box. The first magnet 21 pushes the second magnet 36 upward through the repulsive force to trigger the pressure switch 37. The pressure switch 37 is externally connected to a processor, and the processor is externally connected to an alarm. The processor is used to count the number of times the pressure switch 37 is triggered per unit time, and to perform statistical analysis on the data. When the triggering frequency decreases, an alarm is issued in time. The alarm is also triggered when the pressure switch 37 has not been triggered for a long time.

[0048] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. An adjustable flow electric diaphragm pump, comprising a pump body (1) and an inlet pipe (3) and an outlet pipe (4) mounted on the pump body (1), characterized in that, Also includes: The filter assembly includes a filter box (2) installed at the water inlet pipe (3) of the pump body (1). The filter box (2) is slidably mounted with a sliding frame (18). Two first filter screens (19) are fixedly installed on the sliding frame (18). The sliding frame (18) slides in the direction of water flow, and a collection box (13) is provided on the bottom wall of the filter box (2). The regulating component includes a first return pipe (5) connected between the inlet pipe (3) and the outlet pipe (4), a three-way regulating ball valve (9) is provided on the first return pipe (5), a second return pipe (6) is connected between the inlet pipe (3) and the first return pipe (5), and a pressure relief valve (7) is provided on the second return pipe (6). The filter box (2) has two connecting pipes (14) symmetrically connected on both sides, and the pump body (1) has two diversion pipes (15) at the bottom. The two connecting pipes (14) and the two diversion pipes (15) are connected one-to-one. The filter box (2) is provided with two second wedge blocks (38), and the two second wedge blocks (38) are located near the two diversion pipes (15) in a one-to-one correspondence. The two first filter screens (19) are fixedly installed with connecting plates (20) on the side away from each other. The bottom walls of the two connecting plates (20) are fixedly installed with telescopic rods (22), and the bottom end of the telescopic rods (22) is fixedly installed with a first scraper (23). The filter box (2) has a guide groove on its inner wall. The first scraper (23) is slidably installed in the guide groove. The guide groove is an obtuse triangle shape and includes a first inclined groove (24), a second inclined groove (25), and a flat groove (26). A first one-way plate (27) is rotatably installed at the connection between the first inclined groove (24) and the flat groove (26). A second one-way plate (28) is rotatably installed at the connection between the first inclined groove (24) and the second inclined groove (25). A second scraper (30) is slidably installed on the side wall of the first filter screen (19). When the first filter screen (19) is close to the water inlet pipe (3), the second scraper (30) moves down along the first filter screen (19). When the first filter screen (19) is far away from the water inlet pipe (3), the second scraper (30) moves up along the first filter screen (19). A first wedge block (29) is provided on the side of the two first filters (19) that are close to each other.

2. The adjustable flow electric diaphragm pump according to claim 1, characterized in that, A three-way regulating ball valve (9) is provided at the connection between the outlet pipe (4) and the first return pipe (5), and the outlet pipe (4) is guided to the inlet pipe (3) through the three-way regulating ball valve (9).

3. The adjustable flow electric diaphragm pump according to claim 1, characterized in that, The water outlet pipe (4) is equipped with a manual ball valve (8), and the top of the manual ball valve (8) is equipped with a pressure regulator (10), and the top of the pressure regulator (10) is equipped with an air filter pressure reducing valve (11).

4. The adjustable flow electric diaphragm pump according to claim 1, characterized in that, A pressure gauge (12) is installed on the water outlet pipe (4).

5. An adjustable flow electric diaphragm pump according to claim 1, characterized in that, A second filter (34) is slidably installed on the bottom wall of the first filter (19), and a return spring is provided at the sliding connection.

6. The adjustable flow electric diaphragm pump according to claim 1, characterized in that, A first magnet (21) is installed on each of the two connecting plates (20). A detection box is provided on the top wall of the filter box (2). A second magnet (36) is elastically installed in the detection box. The first magnet (21) and the second magnet (36) repel each other. A pressure switch (37) is provided on the inner top wall of the detection box. The first magnet (21) pushes the second magnet (36) upward by repulsion to trigger the pressure switch (37).

Images