Pneumatic diaphragm pump with pressure regulating structure

Abstract

The utility model relates to the technical field of pneumatic diaphragm pumps, and provides a pneumatic diaphragm pump with a pressure regulating structure, which comprises a diaphragm pump main body, a bottom plate and a pair of fixing blocks, the fixing blocks are arranged at the bottom of the diaphragm pump main body and mounted on the bottom plate, and a pressure regulating component is arranged at the inlet end of the diaphragm pump main body. The dustproof noise reduction assembly is arranged on the bottom plate, the control pipeline is connected to the inlet end of the pressure adjusting assembly, a spherical cavity is formed in the control pipeline, a plurality of inner grooves are formed in the spherical cavity, sealing sleeve holes are formed in the inner grooves, movable columns are movably connected into the sealing sleeve holes in a sleeved mode, and supporting layers are arranged at one ends of the movable columns. According to the technical scheme, the problem that the use flexibility is affected due to the fact that the internal air pressure of the diaphragm pump is inconvenient to adjust during use in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic diaphragm pumps, and specifically, to a pneumatic diaphragm pump with a pressure regulating structure. Background Technique

[0002] A pneumatic diaphragm pump is a new type of conveying machinery that uses compressed air as a power source. The pneumatic diaphragm pump has four materials: engineering plastics, aluminum alloy, stainless steel, and cast iron. It is installed in various special occasions to pump various media that conventional pumps cannot suck, and satisfactory results have been achieved.

[0003] After retrieval, the Chinese patent authorization announcement number CN215805087U discloses a pneumatic diaphragm pump with a new structure. It is mentioned in the text that "the technical key point is to set the mutually communicating left and right liquid cavities in the middle of the pump, and the left and right diaphragms are respectively arranged on both sides of the left and right liquid cavities. Under the action of the gas distribution control unit and the left and right return pistons, the left and right diaphragms move outward simultaneously to suck the liquid into the liquid cavity; the left and right diaphragms move inward simultaneously to push the liquid out of the liquid cavity. When discharging liquid, the pressures of the left and right liquid cavities in the intermediate body are equal. The intermediate body is located in the center of the pump as the hydraulic end, with a small unit volume radial stress, strong bending resistance, a small axial resultant force, and high hydraulic pressure resistance; on both sides of the diaphragm are high-pressure gas and high-pressure liquid, with opposite directions and mutual cancellation, having high gas pressure and high hydraulic pressure resistance; the left and right gas cavities are protected by the diaphragm, do not contact corrosive liquids, are made of metal materials, and have high gas pressure resistance." In the above scheme, the diaphragm pump relies on the diaphragm protection to improve the functions of high pressure resistance and corrosion resistance. However, during use, it is not convenient to adjust the internal air pressure of the diaphragm pump, thus affecting the flexibility of use. In view of the above problems, the overall structure has been deeply studied and optimized. By installing a method to adjust the flow rate of the material entering, the effect of adjusting the air pressure of the diaphragm pump is achieved, and the applicable range is expanded.

[0004] Therefore, improvements are made to the above problems. Content of the Utility Model

[0005] The utility model provides a pneumatic diaphragm pump with a pressure regulating structure, which solves the problem in the related technology that it is not convenient to adjust the internal air pressure of the diaphragm pump during use, thus affecting the flexibility of use.

[0006] The technical solution of the utility model is as follows: including

[0007] A diaphragm pump main body, a bottom plate, and a pair of fixing blocks. The fixing blocks are arranged at the bottom of the diaphragm pump main body, and the fixing blocks are installed on the bottom plate;

[0008] A pressure regulating component, which is arranged at the inlet end of the diaphragm pump main body;

[0009] The dust-proof and noise-reducing component is provided on the base plate;

[0010] The pressure regulating component includes a control pipeline. The control pipeline is connected to the inlet end of the pressure regulating component. A spherical cavity is formed in the control pipeline. A plurality of inner grooves are formed in the spherical cavity. A sealing sleeve hole is formed in the inner groove. An activity column is movably sleeved and connected in the sealing sleeve hole. A support layer is provided at one end of the activity column.

[0011] As a further technical solution, a connecting plate is provided at the upper end of the activity column. A spring is sleeved on the activity column. The spring is connected between the connecting plate and the outer surface of the control pipeline. An expansion airbag is connected between the support layers.

[0012] As a further technical solution, an air pump is fixed on the surface of the base plate. An air pipe is provided at the output end of the air pump. The air pipe is inserted into the control pipeline. One end of the air pipe is connected to the expansion airbag.

[0013] As a further technical solution, the dust-proof and noise-reducing component includes an outer frame. The outer frame is fixed on the surface of the base plate. An adjusting screw rod is rotatably connected in the outer frame. A driving motor is provided at the top of the outer frame. The output end of the driving motor is connected to the adjusting screw rod.

[0014] As a further technical solution, sliding ways are provided on both sides inside the outer frame. A lifting block is slidably connected on the sliding way. The lifting block is in threaded fit connection with the adjusting screw rod. A protective cover is fixedly connected to the side end face of the lifting block. A fitting frame is provided on the surface of the base plate.

[0015] As a further technical solution, sound-absorbing cotton is provided on both side surfaces inside the protective cover. A dust-proof mesh hole is formed at the top of the protective cover. A heat dissipation fan is installed on the side surface of the protective cover. Sleeve openings are formed on both opposite surfaces of the protective cover.

[0016] As a further technical solution, the sleeve opening is located directly above the control pipeline. The bottom of the sleeve opening is of an open structure. The inner diameter size of the sleeve opening matches the diameter of the control pipeline.

[0017] As a further technical solution, the fitting frame matches the structure and size of the protective cover.

[0018] As a further technical solution, the expansion airbag is integrally of a spherical structure.

[0019] The working principle and beneficial effects of the present utility model are as follows:

[0020] In the present utility model, a pressure regulating component is provided. Through the interaction of structures such as a control pipeline, a spherical cavity, an inner groove, a sealing sleeve hole, a movable column, an expansion airbag, and an air pump, the feeding pressure can be regulated by controlling the size of the expansion airbag with the air pump. The larger the volume of the expansion airbag, the greater the feeding pressure, and vice versa. During the volume change of the expansion airbag, the outer shape can be corrected through the movable column and the support layer, so that the outer shape of the expansion airbag is uniform during the contraction process, without deformation or skew, and has good pressure control effect and practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present utility model will be further described in detail below in conjunction with the drawings and specific embodiments.

[0022] Figure 1 is a schematic structural diagram of the present utility model;

[0023] Figure 2 is an axonometric view of the present utility model;

[0024] Figure 3 is an axonometric sectional view of the present utility model;

[0025] Figure 4 is a sectional view of the present utility model;

[0026] Figure 5 is an attachment of the present utility model Figure 3 partial enlarged view of part A in;

[0027] Figure 6 is an attachment of the present utility model Figure 4 partial enlarged view of part B in;

[0028] In the figure: 1, diaphragm pump body; 2, bottom plate; 3, fixing block; 4, pressure regulating component; 4-1, control pipeline; 4-2, spherical cavity; 4-3, inner groove; 4-4, sealing sleeve hole; 4-5, movable column; 4-6, support layer; 4-7, connecting plate; 4-8, spring; 4-9, expansion airbag; 4-10, air pump; 4-11, air pipe; 5, dust and noise reduction component; 5-1, outer frame; 5-2, adjusting screw; 5-3, driving motor; 5-4, slideway; 5-5, lifting block; 5-6, protective cover; 5-7, fitting frame; 5-8, sound-absorbing cotton; 5-9, dust-proof mesh hole; 5-10, cooling fan; 5-11, socket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present utility model.

[0030] As Figures 1 to 6 shown, this embodiment proposes a pneumatic diaphragm pump with a pressure regulating structure, including

[0031] a diaphragm pump main body 1, a bottom plate 2, and a pair of fixing blocks 3. The fixing blocks 3 are arranged at the bottom of the diaphragm pump main body 1, and the fixing blocks 3 are installed on the bottom plate 2;

[0032] a pressure regulating component 4, which is arranged at the inlet end of the diaphragm pump main body 1;

[0033] a dust and noise reduction component 5, which is arranged on the bottom plate 2;

[0034] The pressure regulating component 4 includes a control pipe 4-1, which is connected to the inlet end of the pressure regulating component 4. A spherical cavity 4-2 is opened in the control pipe 4-1. A number of inner grooves 4-3 are opened in the spherical cavity 4-2. A seal sleeve hole 4-4 is opened in the inner groove 4-3. A movable column 4-5 is movably sleeved and connected in the seal sleeve hole 4-4. A support layer 4-6 is arranged at one end of the movable column 4-5. A connecting plate 4-7 is arranged at the upper end of the movable column 4-5. A spring 4-8 is sleeved on the movable column 4-5, and the spring 4-8 is connected between the connecting plate 4-7 and the outer surface of the control pipe 4-1. An expansion airbag 4-9 is connected between the support layers 4-6. An air pump 4-10 is fixed on the surface of the bottom plate 2. An air pipe 4-11 is arranged at the output end of the air pump 4-10. The air pipe 4-11 is inserted into the control pipe 4-1, and one end of the air pipe 4-11 is connected to the expansion airbag 4-9.

[0035] In this embodiment, in order to achieve the effect of adjustable pressure for the entry of materials, a pressure regulating assembly 4 is designed. A control pipe 4-1 is connected to the inlet end of the diaphragm pump body 1. A spherical cavity 4-2 is formed inside the control pipe 4-1. A plurality of inner grooves 4-3 are formed inside the spherical cavity 4-2. A sealing sleeve hole 4-4 is formed in each inner groove 4-3. A movable movable column 4-5 is arranged in the sealing sleeve hole 4-4. A support layer 4-6 is arranged at one end of the movable column 4-5. An expansion airbag 4-9 is connected between the plurality of support layers 4-6. The expansion airbag 4-9 can be inflated and deflated by inflating and pumping air. An air pump 4-10 is fixed on the bottom plate 2. The output end of the air pump 4-10 is connected to an air pipe 4-11. One end of the air pipe 4-11 passes through the control pipe 4-1 and is connected to the expansion airbag 4-9. The expansion airbag 4-9 can be inflated and deflated by the air pump 4-10. After the expansion airbag 4-9 is filled with air pressure, its volume increases, and the gap with the spherical cavity 4-2 becomes smaller. The greater the pressure when the material enters, the smaller the contraction and the smaller the pressure. During the expansion and contraction process, the movable column 4-5 moves and expands and contracts in the sealing sleeve hole 4-4, playing a role in maintaining the shape and position of the expansion airbag 4-9.

[0036] Further, the dust-proof and noise-reducing assembly 5 includes an outer frame 5-1. The outer frame 5-1 is fixed on the surface of the bottom plate 2. An adjusting screw 5-2 is rotatably connected inside the outer frame 5-1. A driving motor 5-3 is arranged at the top of the outer frame 5-1. The output end of the driving motor 5-3 is connected to the adjusting screw 5-2. Slideways 5-4 are arranged on both sides inside the outer frame 5-1. A lifting block 5-5 is slidably connected to the slideways 5-4. The lifting block 5-5 is in threaded engagement with the adjusting screw 5-2. A protective cover 5-6 is fixedly connected to the side end face of the lifting block 5-5. A fitting frame 5-7 is arranged on the surface of the bottom plate 2. Sound-absorbing cotton 5-8 is arranged on both inner surfaces of the protective cover 5-6. A dust-proof mesh hole 5-9 is formed at the top of the protective cover 5-6. A cooling fan 5-10 is installed on the side surface of the protective cover 5-6. Sleeve openings 5-11 are formed on both opposite surfaces of the protective cover 5-6.

[0037] In this embodiment, in order to achieve the effect of controlling noise under pressure changes, a dust-proof and noise-reducing component 5 is designed. An outer frame 5-1 is installed on the bottom plate 2. An adjusting screw 5-2 and a slideway 5-4 are arranged in the outer frame 5-1. A driving motor 5-3 is installed at the top to control the rotation of the adjusting screw 5-2. A lifting block 5-5 is installed on the adjusting screw 5-2 and the slideway 5-4. A protective cover 5-6 is connected to the side end face of the lifting block 5-5. Sound-absorbing cotton 5-8 is installed inside the protective cover 5-6. There is a dust-proof mesh hole 5-9 at the top, and two sleeve openings 5-11 are provided. After the protective cover 5-6 descends, it can cover the control pipeline 4-1 and the external feeding pipeline to be connected. The noise generated by the control pipeline 4-1 can be reduced by the sound-absorbing cotton 5-8. A cooling fan 5-10 is installed on the surface of the protective cover 5-6, which can cooperate with the dust-proof mesh hole 5-9 to cool the internal control pipeline 4-1 and the air pump 4-10.

[0038] Further, the sleeve opening 5-11 is located directly above the control pipeline 4-1. The bottom of the sleeve opening 5-11 is an open structure, and the inner diameter size of the sleeve opening 5-11 matches the diameter of the control pipeline 4-1.

[0039] In this embodiment, through the sleeve opening 5-11 with a size matching that of the control pipeline 4-1, the protective cover 5-6 can receive the entire control pipeline 4-1 inside, ensuring the noise reduction and cooling effects.

[0040] Further, the fitting frame 5-7 matches the structure and size of the protective cover 5-6.

[0041] In this embodiment, through the cooperation of the frame and the protective cover 5-6, the gap at the bottom is reduced, avoiding affecting the dust-proof and noise-reducing effects.

[0042] Further, the expansion airbag 4-9 is integrally spherical in structure.

[0043] In this embodiment, through the spherical structure, in cooperation with the spherical cavity 4-2, when expanded to the maximum size, the spherical cavity 4-2 can be completely filled, reaching a sealed state.

[0044] When in use, connect the control pipeline 4-1 to the diaphragm pump main body 1. When the diaphragm pump main body 1 needs to adjust the pressure during operation, start the air pump 4-10. When the pressure needs to be increased, inflate the expansion airbag 4-9 to expand, reducing the flow gap to reach the pressurized state. When the pressure is reduced, deflate the expansion airbag 4-9 to reduce the overall diameter. During the expansion and contraction processes, the movable column 4-5 cooperates with the telescopic movement in the sealing sleeve hole 4-4 to correct the shape and position of the expansion airbag 4-9. The noise generated during the process can be reduced through the sound-absorbing cotton 5-8 and the dust-proof mesh hole 5-9. The cooling fan 5-10 keeps blowing air to continuously cool the inside of the protective cover 5-6 and maintain the stability of operation.

[0045] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A pneumatic diaphragm pump with a pressure regulating structure, characterized in that, Including A diaphragm pump main body (1), a bottom plate (2) and a pair of fixing blocks (3). The fixing blocks (3) are arranged at the bottom of the diaphragm pump main body (1), and the fixing blocks (3) are installed on the bottom plate (2); A pressure regulating component (4), which is arranged at the inlet end of the diaphragm pump main body (1); A dust-proof and noise-reducing component (5), which is arranged on the bottom plate (2); The pressure regulating component (4) includes a control pipeline (4-1). The control pipeline (4-1) is connected to the inlet end of the pressure regulating component (4). A spherical cavity (4-2) is opened in the control pipeline (4-1). A plurality of inner grooves (4-3) are opened in the spherical cavity (4-2). A sealing sleeve hole (4-4) is opened in the inner groove (4-3). A movable column (4-5) is movably sleeved and connected in the sealing sleeve hole (4-4). One end of the movable column (4-5) is provided with a support layer (4-6).

2. The pneumatic diaphragm pump with a pressure regulating structure according to claim 1, characterized in that, A connecting plate (4-7) is arranged at the upper end of the movable column (4-5). A spring (4-8) is sleeved on the movable column (4-5). The spring (4-8) is connected between the connecting plate (4-7) and the outer surface of the control pipeline (4-1). An expansion air bag (4-9) is connected between the support layers (4-6).

3. The pneumatic diaphragm pump with a voltage regulating structure according to claim 2, wherein, An air pump (4-10) is fixed on the surface of the bottom plate (2). The output end of the air pump (4-10) is provided with an air pipe (4-11). The air pipe (4-11) is inserted into the control pipeline (4-1). One end of the air pipe (4-11) is connected to the expansion air bag (4-9).

4. A pneumatic diaphragm pump having a pressure regulating structure according to claim 1, characterized in that, The dust-proof and noise-reducing component (5) includes an outer frame (5-1). The outer frame (5-1) is fixed on the surface of the bottom plate (2). An adjusting screw rod (5-2) is rotatably connected in the outer frame (5-1). A driving motor (5-3) is arranged at the top of the outer frame (5-1). The output end of the driving motor (5-3) is connected to the adjusting screw rod (5-2).

5. A pneumatic diaphragm pump with a pressure regulating structure according to claim 4, characterized in that, Sliding ways (5-4) are arranged on both sides inside the outer frame (5-1). A lifting block (5-5) is slidably connected on the sliding ways (5-4). The lifting block (5-5) is in threaded fit connection with the adjusting screw rod (5-2). The side end face of the lifting block (5-5) is fixedly connected with a protective cover (5-6). A fitting frame (5-7) is arranged on the surface of the bottom plate (2).

6. The pneumatic diaphragm pump with a pressure regulating structure according to claim 5, wherein, Sound-absorbing cotton (5-8) is arranged on both side surfaces inside the protective cover (5-6). A dust-proof mesh hole (5-9) is opened at the top of the protective cover (5-6). A cooling fan (5-10) is installed on the side surface of the protective cover (5-6). Sleeve openings (5-11) are opened on both opposite surfaces of the protective cover (5-6).

7. The pneumatic diaphragm pump with a pressure regulating structure according to claim 6, characterized in that, The sleeve opening (5-11) is located directly above the control pipeline (4-1). The bottom of the sleeve opening (5-11) is of an open structure. The inner diameter size of the sleeve opening (5-11) matches the diameter of the control pipeline (4-1).

8. A pneumatic diaphragm pump with a pressure regulating structure according to claim 5, characterized in that, The fitting frame (5-7) matches the structure and size of the protective cover (5-6).

9. The pneumatic diaphragm pump with a pressure regulating structure according to claim 2, wherein, The overall shape of the expansion airbag (4-9) is spherical.

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