Diaphragm pump capable of preventing water leakage

Abstract

The utility model provides an anti-leakage diaphragm pump, which relates to the technical field of fluid conveying equipment and comprises a shell, a balance wheel, a middle plate, a pressurizing diaphragm, a partition plate and a pump head body, a first screw is arranged at the bottom of the balance wheel, a first extrusion surface is arranged on the outer wall of the bottom of the pressurizing diaphragm, and a second extrusion surface matched with the first extrusion surface is arranged on the inner wall of the top of the balance wheel. A first sealing face is arranged on the outer wall of the nut, a second sealing face matched with the first sealing face is arranged on the inner wall of the pressurizing diaphragm, a first sealing ring is arranged on the outer wall of the lower end of the nut, and a second sealing ring is arranged on the upper portion in the pressurizing diaphragm. The first screws are installed from bottom to top to connect the balance wheel and the pressurization diaphragm, multi-point sealing can effectively prevent water leakage at the positions of the first screws, the second screws are connected with the fixed connecting columns, and the installation tightness and the installation structure strength of the pressurization diaphragm between the middle plate and the partition plate can be improved. And water leakage is further prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to fluid delivery equipment technical field, concretely relates to a water leakage prevention diaphragm pump. BACKGROUND

[0002] Diaphragm pump is widely used in fluid delivery field, wherein, the working principle of eccentric wheel diaphragm pump is mainly based on the rotary motion of eccentric wheel, when the motor drives the eccentric wheel to rotate, the swing of eccentric wheel will drive the diaphragm connected with it to reciprocate. This reciprocating motion leads to the volume of diaphragm cavity changing constantly, thereby realizing the suction and discharge of fluid. In the discharge process, due to the decrease of diaphragm cavity volume, the fluid is compressed and output as high-pressure fluid.

[0003] At present, the screw connecting the balance wheel and the booster diaphragm of the eccentric wheel diaphragm pump in the prior art is installed in the form of from top to bottom (water inlet and outlet are located above), and the sealing points are less during screw fixing, which leads to water leakage from the screw during the use of the diaphragm pump, affecting the normal operation of the diaphragm pump. Therefore, the utility model provides a water leakage prevention diaphragm pump to solve the problems in the prior art. UTILITY MODEL CONTENT

[0004] In view of the above problems, the utility model aims at providing a water leakage prevention diaphragm pump, which connects the balance wheel and the booster diaphragm by adopting the installation mode of from bottom to top for the first screw, and multiple-point sealing can effectively prevent water leakage at the position of the first screw, the second screw is connected with the fixed connecting column, which can improve the installation tightness and structural strength of the booster diaphragm between the middle plate and the partition plate, and further prevent water leakage.

[0005] To achieve the above purpose, the utility model provides the following technical scheme:

[0006] A water leakage prevention diaphragm pump, comprising a shell, a balance wheel, a middle plate, a booster diaphragm, a partition plate and a pump head body, the shell is internally provided with a driving mechanism, the balance wheel is arranged in the shell and connected with the driving mechanism, the upper portion of the shell is provided with the middle plate, the upper portion of the middle plate is provided with the booster diaphragm, the upper portion of the booster diaphragm is provided with the partition plate, the upper portion of the partition plate is provided with the pump head body, the bottom portion of the balance wheel is provided with a first screw, a gasket is arranged between the first screw and the bottom portion of the balance wheel, a first extrusion surface is arranged on the outer wall of the bottom portion of the booster diaphragm, a second extrusion surface matched with the first extrusion surface is arranged on the inner wall of the top portion of the balance wheel, a screw cap matched with the first screw is arranged on the booster diaphragm, a first sealing surface is arranged on the outer wall of the screw cap, a second sealing surface matched with the first sealing surface is arranged on the inner wall of the booster diaphragm, a first sealing ring is arranged on the outer wall of the lower end of the screw cap, and a second sealing ring is arranged on the inner portion of the booster diaphragm.

[0007] The middle plate top center is equipped with a fixed connecting column, the partition plate top center is equipped with a first through hole, the booster diaphragm top center is equipped with a second through hole, the first through hole is equipped with a second screw, and the second screw is connected with the screw hole at the top of the fixed connecting column after passing through the second through hole.

[0008] Further improvement lies in that the driving mechanism comprises a motor and an eccentric seat, the lower end of the shell is equipped with the motor, the inside of the shell is equipped with the eccentric seat through a bearing, the output shaft of the motor is connected with the eccentric seat after extending to the inside of the shell, and the balance wheel is installed outside the eccentric seat.

[0009] Further improvement lies in that the first sealing ring and the second sealing ring are arranged between the partition plate and the pump head body, the water inlet is arranged on the pump head body, the water inlet cavity is arranged between the partition plate below the water inlet and the pump head body, and the water outlet cavity is arranged between the partition plate below the water outlet and the pump head body.

[0010] Further improvement lies in that the water inlet one-way diaphragm is arranged on the partition plate, the position of the water inlet one-way diaphragm is matched with the position of the water inlet cavity, the water outlet one-way diaphragm is arranged on one side of the partition plate, and the position of the water outlet one-way diaphragm is matched with the position of the water outlet cavity.

[0011] Further improvement lies in that the water inlet hole is arranged on one side of the partition plate, and the water outlet hole is arranged on one side of the partition plate.

[0012] Further improvement lies in that the booster cavity is formed between the partition plate above the nut and the booster diaphragm.

[0013] The utility model discloses the beneficial effect is: the utility model discloses a first screw is connected balance wheel and booster diaphragm through the installation mode from below to top, is closely connected and is sealed through setting first sealing surface on the nut outer wall of first screw and second sealing surface on the inner wall of booster diaphragm, is extruded and is sealed through setting first extrusion surface on the outer wall of booster diaphragm and second extrusion surface on the inner wall of balance wheel top, and through setting first sealing ring on the lower end outer wall of nut and second sealing ring on the inside of booster diaphragm, the fixed sealing property of first screw can be improved again, and the multi-point sealing can effectively prevent water leakage at the position of first screw.

[0014] The utility model discloses the beneficial effect is: the utility model discloses a first screw is connected balance wheel and booster diaphragm through the installation mode from below to top, is closely connected and is sealed through setting first sealing surface on the nut outer wall of first screw and second sealing surface on the inner wall of booster diaphragm, is extruded and is sealed through setting first extrusion surface on the outer wall of booster diaphragm and second extrusion surface on the inner wall of balance wheel top, and through setting first sealing ring on the lower end outer wall of nut and second sealing ring on the inside of booster diaphragm, the fixed sealing property of first screw can be improved again, and the multi-point sealing can effectively prevent water leakage at the position of first screw. DRAWINGS

[0015] Figure 1 It is the main view of the utility model structure section view schematic diagram.

[0016] Figure 2 The structure is shown in the three-dimensional view of the utility model.

[0017] Figure 3 The structure is shown in the explosion view of the utility model.

[0018] Figure 4 The assembly of the balance wheel, the middle plate, the booster diaphragm and the partition plate is shown in the explosion view of the utility model.

[0019] Wherein: 1, the shell; 2, the balance wheel; 3, the middle plate; 4, the booster diaphragm; 5, the partition plate; 6, the pump head body; 7, the first screw; 8, the gasket 8; 9, the first extrusion surface; 10, the second extrusion surface; 11, the nut; 12, the first sealing surface; 13, the second sealing surface; 14, the first sealing ring; 15, the second sealing ring; 16, the fixed connecting column; 17, the first through hole; 18, the second through hole; 19, the second screw; 20, the motor; 21, the eccentric seat; 22, the output shaft; 23, the first sealing ring; 24, the second sealing ring; 26, the water inlet; 27, the water outlet; 28, the water inlet cavity; 29, the water outlet cavity; 30, the water inlet one-way diaphragm; 31, the water outlet one-way diaphragm; 32, the water inlet hole; 33, the water outlet hole; 34, the booster cavity. DETAILED DESCRIPTION

[0020] In order to deepen the understanding of the utility model, the utility model will be further described in conjunction with the embodiments below, and the present embodiment is only used to explain the utility model and does not constitute the limitation of the protection scope of the utility model.

[0021] Embodiment one

[0022] According to Figures 1-4As shown, the embodiment provides a water leakage prevention diaphragm pump, which comprises a shell 1, a balance wheel 2, a middle plate 3, a booster diaphragm 4, a partition plate 5 and a pump head body 6, the shell 1 is internally provided with a driving mechanism, the balance wheel 2 is arranged in the shell 1 and connected with the driving mechanism, the shell 1 is provided with the middle plate 3 above, the middle plate 3 is provided with the booster diaphragm 4 above, the booster diaphragm 4 is provided with the partition plate 5 above, the partition plate 5 is provided with the pump head body 6 above, the bottom of the balance wheel 2 is provided with a first screw 7, the first screw 7 is provided with a gasket 8 between the bottom of the balance wheel 2, the outer wall of the bottom of the booster diaphragm 4 is provided with a first extrusion surface 9, the inner wall of the top of the balance wheel 2 is provided with a second extrusion surface 10 matched with the first extrusion surface 9, the booster diaphragm 4 is provided with a nut 11 matched with the first screw 7, the outer wall of the nut 11 is provided with a first sealing surface 12, the inner wall of the booster diaphragm 4 is provided with a second sealing surface 13 matched with the first sealing surface 12, the outer wall of the lower end of the nut 11 is provided with a first sealing ring 14, and the inside of the booster diaphragm 4 is provided with a second sealing ring 15 above; the top center of the middle plate 3 is provided with a fixed connecting column 16, the top center of the partition plate 5 is provided with a first through hole 17, the top center of the booster diaphragm 4 is provided with a second through hole 18, the first through hole 17 is provided with a second screw 19, and the second screw 19 is connected with the screw hole at the top of the fixed connecting column 16 after penetrating through the second through hole 18.

[0023] The partition plate 5 is provided with a water inlet one-way diaphragm 30, the position of the water inlet one-way diaphragm 30 is matched with the position of the water inlet cavity 28, the partition plate 5 on one side of the water inlet one-way diaphragm 30 is provided with a water outlet one-way diaphragm 31, and the position of the water outlet one-way diaphragm 31 is matched with the position of the water outlet cavity 29. The partition plate 5 on one side of the water inlet one-way diaphragm 30 is provided with a water inlet hole 32, and the partition plate 5 on one side of the water outlet one-way diaphragm 31 is provided with a water outlet hole 33. The partition plate 5 above the nut 11 and the booster diaphragm 4 form a booster cavity 34.

[0024] When the diaphragm pump is started, the driving mechanism controls the booster diaphragm 4 to reciprocate, water enters through the water inlet 26, then reaches the water inlet cavity 28, and then extrudes the water inlet one-way diaphragm 30 at the water inlet hole 32, then the water flow enters the booster cavity 34, so that the volume of the booster cavity 34 changes continuously, thereby realizing the suction of the fluid, in the discharge process, due to the decrease of the volume of the booster cavity 34, the fluid is compressed and output as a high-pressure fluid, then extrudes the water outlet one-way diaphragm 31 at the water outlet hole 33, then the fluid reaches the water outlet cavity 29 and finally discharges the high-pressure water flow from the water outlet 27.

[0025] The first sealing ring 24 and the second sealing ring 25 are arranged between the partition plate 5 and the pump head body 6, the water inlet 26 and the water outlet 27 are arranged on the pump head body 6, the water inlet cavity 28 is arranged between the partition plate 5 and the pump head body 6 below the water inlet 26, and the water outlet cavity 29 is arranged between the partition plate 5 and the pump head body 6 below the water outlet 27. The first sealing ring 24 and the second sealing ring 25 can effectively improve the sealing performance of the water inlet cavity 28 and the water outlet cavity 29, and prevent mutual seepage.

[0026] During the operation of the diaphragm pump, the first sealing surface 12 on the outer wall of the nut 11 of the first screw 7 is tightly connected and sealed with the second sealing surface 13 on the inner wall of the booster diaphragm 4, the first extrusion surface 9 on the outer wall of the booster diaphragm 4 is extruded and sealed with the second extrusion surface 10 on the inner wall of the top of the balance wheel 2, the first sealing ring 14 on the lower end of the outer wall of the nut 11 and the second sealing ring 15 arranged on the inside of the booster diaphragm 4 form a seal at two positions, which can effectively improve the sealing performance of the first screw 7, and the multi-point sealing can effectively prevent water leakage at the position of the first screw 7; the fixed connection column 16 is arranged at the top center of the middle plate 3, and the second screw 19 is arranged in the first through hole 17 at the top center of the partition plate 5 and connected with the fixed connection column 16, which can improve the installation tightness and the installation structural strength of the booster diaphragm 4 between the middle plate 3 and the partition plate 5, and further prevent water leakage.

[0027] Embodiment two

[0028] According to Figures 1-4 As shown in the figure, the embodiment provides a water leakage prevention diaphragm pump, which comprises a shell 1, a balance wheel 2, a middle plate 3, a booster diaphragm 4, a partition plate 5 and a pump head body 6. The inside of the shell 1 is provided with a driving mechanism, the balance wheel 2 is arranged in the inside of the shell 1 and connected with the driving mechanism, the upper part of the shell 1 is provided with the middle plate 3, the upper part of the middle plate 3 is provided with the booster diaphragm 4, the upper part of the booster diaphragm 4 is provided with the partition plate 5, the upper part of the partition plate 5 is provided with the pump head body 6, the bottom of the balance wheel 2 is provided with a first screw 7, a gasket 8 is arranged between the first screw 7 and the bottom of the balance wheel 2, the outer wall of the bottom of the booster diaphragm 4 is provided with a first extrusion surface 9, the inner wall of the top of the balance wheel 2 is provided with a second extrusion surface 10 matched with the first extrusion surface 9, the booster diaphragm 4 is provided with a nut 11 matched with the first screw 7, the outer wall of the nut 11 is provided with a first sealing surface 12, the inner wall of the booster diaphragm 4 is provided with a second sealing surface 13 matched with the first sealing surface 12, the lower end of the outer wall of the nut 11 is provided with a first sealing ring 14, and the inside of the booster diaphragm 4 is provided with a second sealing ring 15 arranged at the upper part. The top center of the middle plate 3 is provided with a fixed connection column 16, the top center of the partition plate 5 is provided with a first through hole 17, the top center of the booster diaphragm 4 is provided with a second through hole 18, the second screw 19 is arranged in the first through hole 17, and the second screw 19 is connected with the screw hole at the top of the fixed connection column 16 after passing through the second through hole 18.

[0029] The driving mechanism comprises a motor 20 and an eccentric seat 21, the lower end of the shell 1 is provided with the motor 20, the inside of the shell 1 is provided with the eccentric seat 21 through a bearing 23, the output shaft 22 of the motor 20 is connected with the eccentric seat 21 after extending to the inside of the shell 1, and the balance wheel 2 is installed outside the eccentric seat 21.

[0030] When the driving mechanism drives the balance wheel 2 to move, the motor 20 is started to drive the eccentric seat 21 to rotate, the eccentric seat 21 is swung to drive the balance wheel 2 to reciprocate, the volume of the pressurization position in the pump body is continuously changed, so that the fluid is sucked and discharged.

[0031] The basic principle, main features and advantages of the utility model are shown and described. It should be understood by the person skilled in the art that the utility model is not limited by the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification are only for illustrating the principle of the utility model, various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A water-tight diaphragm pump characterized by: The utility model provides a kind of pump, including shell (1), balance wheel (2), middle plate (3), booster diaphragm (4), diaphragm (5) and pump head body (6), the inside of the shell (1) is equipped with driving mechanism, the balance wheel (2) is arranged in shell (1) inside and is connected with driving mechanism, the upper portion of the shell (1) is equipped with middle plate (3), the upper portion of the middle plate (3) is equipped with booster diaphragm (4), the upper portion of the booster diaphragm (4) is equipped with diaphragm (5), the upper portion of the diaphragm (5) is equipped with pump head body (6), the bottom of the balance wheel (2) is equipped with first screw (7), the first screw (7) is equipped with washer (8) between the bottom of balance wheel (2), the outer wall of the bottom of the booster diaphragm (4) is equipped with first extrusion surface (9), the inner wall of the top of the balance wheel (2) is equipped with the second extrusion surface (10) suitable for first extrusion surface (9), the booster diaphragm (4) is equipped with the nut (11) suitable for first screw (7), the outer wall of the nut (11) is equipped with first sealing surface (12), the inner wall of the booster diaphragm (4) is equipped with the second sealing surface (13) suitable for first sealing surface (12), the outer wall of the lower end of the nut (11) is equipped with first sealing ring (14), the inside upper portion of the booster diaphragm (4) is equipped with second sealing ring (15); The top center of the middle plate (3) is equipped with fixed connection column (16), the top center of the diaphragm (5) is equipped with first through hole (17), the top center of the booster diaphragm (4) is equipped with second through hole (18), the first through hole (17) is equipped with second screw (19) in, the second screw (19) is connected with the screw hole of the top of fixed connection column (16) after passing through second through hole (18).

2. A leak-proof diaphragm pump according to claim 1, characterized in that: The driving mechanism includes motor (20) and eccentric seat (21), the lower end of the shell (1) is equipped with motor (20), the inside of the shell (1) is equipped with eccentric seat (21) by bearing (23), the output shaft 22 of motor (20) extends to the inside of shell (1) and is connected with eccentric seat (21), the balance wheel (2) is installed on the outside of eccentric seat (21).

3. A leak-proof diaphragm pump according to claim 1, characterized in that: The first sealing ring (24) and the second sealing ring (25) are arranged between the diaphragm (5) and the pump head body (6), the water inlet (26) and the water outlet (27) are arranged on the pump head body (6), the water inlet cavity (28) is arranged between the diaphragm (5) and the pump head body (6) below the water inlet (26), and the water outlet cavity (29) is arranged between the diaphragm (5) and the pump head body (6) below the water outlet (27).

4. A leak-proof diaphragm pump according to claim 3, characterized in that: The water inlet one-way diaphragm (30) is arranged on the diaphragm (5), the position of the water inlet one-way diaphragm (30) is matched with the position of the water inlet cavity (28), the water outlet one-way diaphragm (31) is arranged on one side of the diaphragm (5), and the position of the water outlet one-way diaphragm (31) is matched with the position of the water outlet cavity (29).

5. A leak-proof diaphragm pump according to claim 4, characterized in that: The water inlet hole (32) is arranged on one side of the diaphragm (5), and the water outlet hole (33) is arranged on one side of the diaphragm (5).

6. A leak-proof diaphragm pump according to claim 5, characterized in that: A plenum chamber (34) is formed between the partition (5) above the screw cap (11) and the plenum diaphragm (4).

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