Hydraulic diaphragm metering pump with film protecting structure

Abstract

The utility model discloses a hydraulic diaphragm metering pump with a protective diaphragm structure. The hydraulic diaphragm metering pump comprises a pump head, a mounting seat is arranged at the top end of the pump head, a conveying channel is arranged in the pump head, a liquid inlet is formed in one side of the pump head, a liquid outlet is formed in one side of the pump head, and a connecting cavity is formed in the top end of the pump head. According to the hydraulic diaphragm metering pump with the diaphragm protecting structure, the diaphragm body is arranged, and when the diaphragm body in the metering pump is hydraulically driven to deform, a spring in a positioning barrel can push a connecting column to support a diaphragm protecting plate, so that the diaphragm body is supported through the diaphragm protecting plate, and the diaphragm body is prevented from being pressed to deform; limiting sliding blocks on the two sides of a connecting column are attached to the interiors of limiting grooves so that the connecting column can be limited, the connecting column is prevented from being separated from the interior of a positioning cylinder, the positioning cylinder can be rapidly disassembled and assembled through fixing bolts on the two sides of a positioning sleeve, and the problem that the diaphragm cannot be protected is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic diaphragm metering pumps, in particular to a hydraulic diaphragm metering pump with a protective membrane structure. Background Art

[0002] A metering pump is a pump body that can adjust the internal flow rate. It can be used to transport various liquid materials. According to the adjustment principle, it can be divided into various types such as plunger type, mechanical diaphragm type, hydraulic diaphragm type, etc. Among them, the hydraulic diaphragm type is a metering pump type that adjusts the diaphragm by hydraulic means to control the internal flow rate. The product has been widely used in chemical, petroleum, environmental protection, thermal power, medicine, metallurgy, papermaking, food, water supply and other industrial fields and high-tech agriculture. However, the current hydraulic diaphragm metering pump still has some defects in use. The diaphragm cannot be effectively protected during use, resulting in the diaphragm being easily deformed, thereby affecting the flow regulation effect;

[0003] Now a new type of hydraulic diaphragm metering pump with a protective membrane structure is proposed to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a hydraulic diaphragm metering pump with a protective membrane structure to solve the problem that the diaphragm cannot be protected in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hydraulic diaphragm metering pump with a protective membrane structure, comprising a pump head, a mounting seat is arranged at the top of the pump head, a delivery channel is arranged inside the pump head, a liquid inlet is arranged on one side of the pump head, a liquid outlet is arranged on one side of the pump head, a connecting cavity is arranged at the top of the pump head, the connecting cavity is connected with the inside of the delivery channel, one end of the pump head is fixedly connected to a pump body, and the top of the pump body is fixedly connected to a motor;

[0006] The diaphragm body is movably connected to the bottom end of the mounting seat, and the bottom end of the conveying channel is fixedly connected to the positioning sleeve, and the positioning sleeve is movably connected to the inside of the positioning sleeve, and a group of fixing bolts are movably connected to the two sides of the positioning sleeve, and a group of threaded holes are respectively opened on both sides of the positioning sleeve, and the fixing bolts pass through one side of the positioning sleeve and extend to the inside of the threaded holes, and a connecting column is movably connected to the inside of the positioning column, and a bottom groove is opened at the bottom end of the connecting column, and a spring is fixedly connected to the bottom end of the positioning cylinder, and the spring is fixedly connected to the bottom groove, and a group of limiting sliding blocks are respectively fixedly connected to the bottom ends of the two sides of the connecting column, and a group of limiting grooves are respectively opened on both sides of the positioning cylinder, and a film protective plate is fixedly connected to the top of the connecting column.

[0007] Preferably, the fixing bolt is threadedly connected to the threaded hole, and the limiting slider is slidably connected to the limiting groove.

[0008] Preferably, the center line of the connecting column and the center line of the film protection plate are on the same vertical plane, and the film protection plate is movably connected to the diaphragm body.

[0009] Preferably, a threaded opening is provided on one side of the top of the mounting seat, a pressure relief hole is provided on one side of the inner top of the mounting seat, a knob is movably connected to one side of the top of the mounting seat, and a threaded bolt is fixedly connected to the bottom end of the knob.

[0010] Preferably, the threaded bolt is threadedly connected to the threaded opening, and the pressure relief hole is communicated with the interior of the threaded opening.

[0011] Preferably, the bottom end of the outside of the mounting seat is fixedly connected with a mounting flange, the top of the pump head is fixedly connected with a mounting screw, the top of the mounting flange is provided with a mounting hole, the mounting screw passes through the mounting hole and is movably connected with a fixing nut, the bottom end of the mounting flange is fixedly connected with a sealing ring, the sealing ring is movably connected to the pump head, the inside of the mounting seat is fixedly connected with a positioning pressure ring, the top of the mounting seat is fixedly connected with a connecting sleeve, and the inside of the connecting sleeve is movably connected with a piston.

[0012] Preferably, the positioning pressure ring is movably connected to the diaphragm body, and the fixing nut is movably connected to the mounting flange.

[0013] Preferably, the connecting sleeve is communicated with the interior of the mounting seat, and the center line of the positioning pressure ring and the center line of the mounting seat are on the same vertical plane.

[0014] Compared with the prior art, the utility model has the beneficial effects that: the hydraulic diaphragm metering pump with a protective membrane structure can not only protect the diaphragm and facilitate pressure relief, but also can be quickly disassembled and replaced or maintained.

[0015] (1) By providing a diaphragm body, a connecting column, a diaphragm plate, a positioning cylinder, a positioning sleeve, a limiting groove, a threaded hole, a fixing bolt, a spring, a limiting slider and a bottom groove, when the diaphragm body inside the metering pump is deformed by hydraulic drive, the spring inside the positioning cylinder can push the connecting column to support the diaphragm plate, thereby supporting the diaphragm body through the diaphragm plate to prevent the diaphragm body from being deformed due to pressure, and the limiting sliders on both sides of the connecting column fit inside the limiting groove to limit the connecting column to prevent the connecting column from being separated from the inside of the positioning cylinder, and the positioning cylinder can be quickly disassembled and assembled by the fixing bolts on both sides of the positioning sleeve, thereby effectively protecting the diaphragm body;

[0016] (2) By providing a pressure relief hole, a threaded bolt, a threaded opening and a knob, the metering pump can drive the threaded bolt to rotate by rotating the knob during use. The threaded bolt can be turned out from the inside of the threaded opening while rotating, so that the inside of the threaded opening is opened and the pressure inside the mounting seat can be relieved through the pressure relief hole, thereby preventing the internal pressure of the mounting seat from being too high and causing the diaphragm body to deform. After that, the threaded bolt is inserted into the threaded opening, and the knob is rotated to drive the threaded bolt to rotate so that it is completely inserted into the inside of the threaded opening, so as to ensure the sealing of the inside of the mounting seat, thereby achieving pressure relief as required;

[0017] (3) By providing a mounting seat, a mounting screw, a fixing nut, a mounting flange, a sealing ring, a positioning pressure ring and a mounting hole, after a long period of use, the fixing nut can be rotated to separate it from the outside of the mounting screw, and then the mounting seat can be pulled to remove it from the top of the pump head, so as to facilitate the maintenance and replacement of the internal diaphragm body. Then, the diaphragm body is reset and the mounting seat is installed on the top of the pump head. After the mounting screw passes through the inside of the mounting hole, the fixing nut is sleeved on the outside of the mounting screw and tightened, so that the mounting flange and the mounting seat are positioned by the fixing nut, the sealing ring at the bottom of the mounting flange fits on the top of the pump head to ensure the sealing, and the positioning pressure ring inside the mounting seat fits on the top of the diaphragm body to position the diaphragm body, so that the diaphragm body can be easily disassembled and replaced and maintained. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front view structural schematic diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the pump head of the utility model from top view;

[0020] Figure 3 It is a schematic diagram of the top view cross-sectional structure of the positioning tube of the utility model;

[0021] Figure 4 This is a schematic diagram of the top view structure of the mounting hole of the utility model;

[0022] Figure 5 For the utility model Figure 2 The enlarged structural diagram at A in the middle;

[0023] Figure 6 It is a side structural schematic diagram of the utility model.

[0024] In the figure: 1. pump head; 2. pressure relief hole; 3. threaded bolt; 4. threaded mouth; 5. knob; 6. connecting sleeve; 7. piston; 8. mounting seat; 9. mounting screw; 10. fixing nut; 11. mounting flange; 12. sealing ring; 13. liquid inlet; 14. conveying channel; 15. diaphragm body; 16. connecting cavity; 17. connecting column; 18. protective film plate; 19. positioning pressure ring; 20. liquid outlet; 21. positioning cylinder; 22. positioning sleeve; 23. limiting groove; 24. threaded hole; 25. fixing bolt; 26. mounting hole; 27. spring; 28. limiting slider; 29. ​​bottom groove; 30. pump body; 31. motor. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Example 1: Please refer to Figure 1-6 A hydraulic diaphragm metering pump with a protective membrane structure comprises a pump head 1, a mounting seat 8 is arranged at the top of the pump head 1, a delivery channel 14 is arranged inside the pump head 1, a liquid inlet 13 is arranged at one side of the pump head 1, a liquid outlet 20 is arranged at one side of the pump head 1, a connecting cavity 16 is arranged at the top of the pump head 1, the connecting cavity 16 is connected with the inside of the delivery channel 14, a pump body 30 is fixedly connected to one end of the pump head 1, and a motor 31 is fixedly connected to the top of the pump body 30;

[0027] The bottom end of the mounting seat 8 is movably connected with the diaphragm body 15, the bottom end of the conveying channel 14 is fixedly connected with a positioning sleeve 22, the positioning sleeve 22 is movably connected with a positioning cylinder 21, and the two sides of the positioning sleeve 22 are respectively movably connected with a group of fixing bolts 25, and the two sides of the positioning cylinder 21 are respectively provided with a group of threaded holes 24, and the fixing bolts 25 penetrate one side of the positioning sleeve 22 and extend to the inside of the threaded holes 24. The positioning cylinder 21 is movably connected with a connecting column 17, and the bottom end of the connecting column 17 is provided with a bottom groove 29, and the bottom end of the positioning cylinder 21 is fixedly connected with a spring 27, and the spring 27 is fixedly connected to the bottom groove 29, and the bottom ends of both sides of the connecting column 17 are respectively fixedly connected with a group of limiting sliders 28, and the two sides of the positioning cylinder 21 are respectively provided with a group of limiting grooves 23, and the top of the connecting column 17 is fixedly connected with a protective film plate 18;

[0028] The fixing bolt 25 is threadedly connected to the threaded hole 24, and the limiting slider 28 is slidably connected to the limiting groove 23;

[0029] The center line of the connecting column 17 and the center line of the membrane plate 18 are on the same vertical plane, and the membrane plate 18 is movably connected to the diaphragm body 15;

[0030] Specifically, Figure 2 , Figure 3 and Figure 5 As shown, when the diaphragm body 15 inside the metering pump is deformed by hydraulic drive, the spring 27 inside the positioning cylinder 21 can push the connecting column 17 to support the diaphragm plate 18, thereby supporting the diaphragm body 15 through the diaphragm plate 18 to prevent the diaphragm body 15 from being deformed due to pressure. The limiting sliders 28 on both sides of the connecting column 17 fit into the limiting groove 23 to limit the connecting column 17 and prevent the connecting column 17 from escaping from the positioning cylinder 21. The positioning cylinder 21 can be quickly disassembled and assembled by the fixing bolts 25 on both sides of the positioning sleeve 22, thereby effectively protecting the diaphragm body 15.

[0031] Embodiment 2: A threaded opening 4 is provided on one side of the top of the mounting seat 8, a pressure relief hole 2 is provided on one side of the top of the mounting seat 8, a knob 5 is movably connected to one side of the top of the mounting seat 8, and a threaded bolt 3 is fixedly connected to the bottom end of the knob 5;

[0032] The threaded bolt 3 is threadedly connected to the threaded opening 4, and the pressure relief hole 2 is connected to the inside of the threaded opening 4;

[0033] Specifically, Figure 2 As shown, during use, the metering pump can drive the threaded bolt 3 to rotate by rotating the knob 5. The threaded bolt 3 can be turned out from the inside of the threaded opening 4 while being rotated, so that the inside of the threaded opening 4 can be opened to relieve the pressure inside the mounting seat 8 through the pressure relief hole 2, thereby preventing the internal pressure of the mounting seat 8 from being too high and causing the diaphragm body 15 to deform. After that, the threaded bolt 3 is inserted into the threaded opening 4, and the knob 5 is rotated to drive the threaded bolt 3 to rotate so that it is completely inserted into the inside of the threaded opening 4, so as to ensure the sealing of the inside of the mounting seat 8, thereby realizing pressure relief as required.

[0034] Embodiment 3: The bottom end of the outside of the mounting seat 8 is fixedly connected with a mounting flange 11, the top of the pump head 1 is fixedly connected with a mounting screw 9, the top of the mounting flange 11 is provided with a mounting hole 26, the mounting screw 9 passes through the mounting hole 26 and is movably connected with a fixing nut 10, the bottom end of the mounting flange 11 is fixedly connected with a sealing ring 12, the sealing ring 12 is movably connected to the pump head 1, the inside of the mounting seat 8 is fixedly connected with a positioning pressure ring 19, the top of the mounting seat 8 is fixedly connected with a connecting sleeve 6, and the inside of the connecting sleeve 6 is movably connected with a piston 7;

[0035] The positioning pressure ring 19 is movably connected to the diaphragm body 15, and the fixing nut 10 is movably connected to the mounting flange 11;

[0036] The connecting sleeve 6 is connected to the interior of the mounting seat 8, and the center line of the positioning pressure ring 19 and the center line of the mounting seat 8 are on the same vertical plane;

[0037] Specifically, Figure 2 and Figure 4 As shown, after a long period of use, the fixing nut 10 can be rotated to disengage it from the outside of the mounting screw 9, and then the mounting seat 8 can be pulled to remove it from the top of the pump head 1, so as to facilitate the maintenance and replacement of the internal diaphragm body 15. Then the diaphragm body 15 is reset and the mounting seat 8 is installed on the top of the pump head 1. After the mounting screw 9 passes through the inside of the mounting hole 26, the fixing nut 10 is sleeved on the outside of the mounting screw 9 and tightened, so that the mounting flange 11 and the mounting seat 8 are positioned by the fixing nut 10, and the sealing ring 12 at the bottom end of the mounting flange 11 fits against the top of the pump head 1 to ensure the sealing, and the positioning pressure ring 19 inside the mounting seat 8 fits against the top of the diaphragm body 15 to position the diaphragm body 15, so that the diaphragm body 15 can be easily disassembled and replaced and maintained.

[0038] Working principle: When the utility model is in use, when the diaphragm body 15 inside the metering pump is deformed by hydraulic drive, the spring 27 inside the positioning cylinder 21 can push the connecting column 17 to support the diaphragm plate 18, so that the diaphragm body 15 is supported by the diaphragm plate 18 to prevent the diaphragm body 15 from being deformed due to pressure. The limiting sliders 28 on both sides of the connecting column 17 fit into the inside of the limiting groove 23 to limit the connecting column 17 to prevent the connecting column 17 from being separated from the inside of the positioning cylinder 21, and the positioning cylinder 21 can be quickly disassembled and assembled by the fixing bolts 25 on both sides of the positioning sleeve 22. During use, the metering pump can drive the threaded bolt 3 to rotate by rotating the knob 5. While the threaded bolt 3 is rotating, it can be turned out from the inside of the threaded port 4, so that the inside of the threaded port 4 can be opened to relieve pressure on the inside of the mounting seat 8 through the pressure relief hole 2, thereby preventing the internal pressure of the mounting seat 8 from being too high and causing the diaphragm body 15 to deform. , then insert the threaded bolt 3 into the threaded opening 4, and rotate the knob 5 to drive the threaded bolt 3 to rotate so that it is completely inserted into the threaded opening 4 to ensure the sealing inside the mounting seat 8. After long-term use, the fixing nut 10 can be rotated to disengage it from the outside of the mounting screw 9, and then the mounting seat 8 can be pulled to remove it from the top of the pump head 1, so as to facilitate the maintenance and replacement of the internal diaphragm body 15. Then, the diaphragm body 15 is reset, and the mounting seat 8 is installed on the top of the pump head 1, and the mounting screw 9 is passed through the mounting hole 26. The fixing nut 10 is sleeved on the outside of the mounting screw 9 and tightened, so that the mounting flange 11 and the mounting seat 8 are positioned by the fixing nut 10, and the sealing ring 12 at the bottom end of the mounting flange 11 is attached to the top of the pump head 1 to ensure the sealing, and the positioning pressure ring 19 inside the mounting seat 8 is attached to the top of the diaphragm body 15 to position the diaphragm body 15.

Claims

1. A hydraulic diaphragm metering pump with a protective membrane structure, comprising a pump head (1), characterized in that: The top of the pump head (1) is provided with a mounting seat (8), the interior of the pump head (1) is provided with a delivery channel (14), one side of the pump head (1) is provided with a liquid inlet (13), one side of the pump head (1) is provided with a liquid outlet (20), the top of the pump head (1) is provided with a connecting cavity (16), the connecting cavity (16) is connected to the interior of the delivery channel (14), one end of the pump head (1) is fixedly connected to a pump body (30), and the top of the pump body (30) is fixedly connected to a motor (31); The bottom end of the interior of the mounting seat (8) is movably connected to the diaphragm body (15), the bottom end of the interior of the delivery channel (14) is fixedly connected to a positioning sleeve (22), the interior of the positioning sleeve (22) is movably connected to a positioning cylinder (21), both sides of the positioning sleeve (22) are movably connected to a group of fixing bolts (25), both sides of the positioning cylinder (21) are respectively provided with a group of threaded holes (24), the fixing bolts (25) penetrate one side of the positioning sleeve (22) and extend to the interior of the threaded hole (24), The interior of the positioning cylinder (21) is movably connected to a connecting column (17), a bottom groove (29) is provided at the bottom end of the connecting column (17), a spring (27) is fixedly connected to the bottom end of the interior of the positioning cylinder (21), the spring (27) is fixedly connected to the bottom groove (29), a group of limiting sliders (28) are fixedly connected to the bottom ends of both sides of the connecting column (17), a group of limiting grooves (23) are provided at both sides of the interior of the positioning cylinder (21), and a protective film plate (18) is fixedly connected to the top end of the connecting column (17).

2. The hydraulic diaphragm metering pump with a protective film structure according to claim 1, characterized in that: The fixing bolt (25) is threadedly connected to the threaded hole (24), and the limiting slide block (28) is slidably connected to the limiting groove (23).

3. The hydraulic diaphragm metering pump with a protective film structure according to claim 1, characterized in that: The center line of the connecting column (17) and the center line of the film protection plate (18) are on the same vertical plane, and the film protection plate (18) is movably connected to the diaphragm body (15).

4. The hydraulic diaphragm metering pump with a protective film structure according to claim 1, characterized in that: A threaded opening (4) is provided on one side of the top of the mounting seat (8), a pressure relief hole (2) is provided on one side of the top of the interior of the mounting seat (8), a knob (5) is movably connected to one side of the top of the mounting seat (8), and a threaded bolt (3) is fixedly connected to the bottom end of the knob (5).

5. The hydraulic diaphragm metering pump with a protective film structure according to claim 4, characterized in that: The threaded bolt (3) is threadedly connected to the threaded opening (4), and the pressure relief hole (2) is communicated with the interior of the threaded opening (4).

6. The hydraulic diaphragm metering pump with a protective film structure according to claim 1, characterized in that: The bottom end of the outside of the mounting seat (8) is fixedly connected to a mounting flange (11), the top end of the pump head (1) is fixedly connected to a mounting screw (9), the top end of the mounting flange (11) is provided with a mounting hole (26), the mounting screw (9) passes through the mounting hole (26) and is movably connected to a fixing nut (10), the bottom end of the mounting flange (11) is fixedly connected to a sealing ring (12), the sealing ring (12) is movably connected to the pump head (1), the inside of the mounting seat (8) is fixedly connected to a positioning pressure ring (19), the top end of the mounting seat (8) is fixedly connected to a connecting sleeve (6), and the inside of the connecting sleeve (6) is movably connected to a piston (7).

7. The hydraulic diaphragm metering pump with a protective film structure according to claim 6, characterized in that: The positioning pressure ring (19) is movably connected to the diaphragm body (15), and the fixing nut (10) is movably connected to the mounting flange (11).

8. The hydraulic diaphragm metering pump with a protective film structure according to claim 6, characterized in that: The connecting sleeve (6) is in communication with the interior of the mounting seat (8), and the center line of the positioning pressure ring (19) and the center line of the mounting seat (8) are on the same vertical plane.

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