A shock-absorbing diaphragm pump

Abstract

The present invention discloses a shock-absorbing diaphragm pump, which includes an intermediate housing. The intermediate housing includes a main housing and an intermediate partition. The main housing forms a first chamber and a second chamber above and below the intermediate partition respectively. A discharge hole is provided at the middle position of the intermediate partition, and a retaining wall surrounding the discharge hole is included. The retaining wall divides the second chamber into a first region and a second region. The end of the water inlet pipe communicates with the first region, and the end of the water outlet pipe is located in the first chamber and communicates with the first chamber. By arranging the water outlet pipe and the water inlet pipe at the position of the intermediate housing and adjusting the partition plate from left-right partition to up-down partition, the present invention increases the volume of the chamber communicating with the end of the water outlet pipe, so that when the water flow successively passes through the discharge port of the intermediate partition and the first chamber and then enters the end of the water outlet pipe, the water flow impact force is significantly reduced, thereby reducing the noise that may be brought by the water flow impact.

Description

Technical Field

[0001] The present invention relates to the technical field of diaphragm pumps, and more specifically, to a diaphragm pump with a noise reduction structure. Background Art

[0002] Refer to Figures 1 to 2 , the above-mentioned attached drawing shows a structure of an existing diaphragm pump, including an intermediate housing 1, an upper end cover 2 covered above the intermediate housing 1, and a lower end cover 3 fixed below the intermediate housing 1. Specifically, the upper end cover 2 includes an internal cavity, and the internal cavity is divided into non-communicating first area 2a and second area 2b by a partition plate 22 arranged at the middle position of the upper end cover 3. A water inlet 20 and a water outlet 21 are arranged at the side wall position of the upper end cover 2. The water inlet 20 communicates with the first area 2a, the water outlet 21 communicates with the second area 2b. An inhalation hole 10 and a discharge hole 11 are arranged on the upper end surface of the intermediate housing 1. The inhalation hole 10 communicates with the first area 2a, and the discharge hole 11 communicates with the second area 2b. Refer to Figure 3 , the internal cavity of the intermediate housing 1 is divided into a first area 1a and a second area 1b by a retaining ring, and an outlet 11a communicating with the discharge hole 11 is arranged in the second area 1b.

[0003] In the above structure, the volume of the area formed by dividing the upper end cover 3 left and right by the partition plate 22 is small, which is not conducive to absorbing the energy of the water flow. Therefore, the diaphragm pump still generates relatively large noise during operation.

[0004] Based on the above problems, it is necessary to improve the existing technology. Summary of the Invention

[0005] Aiming at the deficiencies existing in the prior art, the present invention provides a shock-absorbing diaphragm pump.

[0006] The present invention is realized by the following technical solutions: A shock-absorbing diaphragm pump includes an intermediate housing, which includes a main housing in a cylindrical structure and an intermediate partition arranged inside the main housing. The main housing forms a first chamber above the intermediate partition, and the main housing forms a second chamber below the intermediate partition. A discharge hole is arranged at the middle position of the intermediate partition. A retaining wall surrounding the discharge hole protrudes from the lower end surface of the intermediate partition. The retaining wall divides the second chamber into non-communicating first area and second area;

[0007] A water inlet and a water outlet are arranged on both sides of the main housing. The end of the water inlet communicates with the first area, and the end of the water outlet is located in the first chamber and communicates with the first chamber. An upper end cover covering the first chamber is arranged above the main housing, and a lower end cover is arranged below the main housing.

[0008] In the above technical solution, a sound insulation pad for sealing the entire first chamber is pressed between the main housing and the upper end cover, and a gap is formed between the sound insulation pad and the bottom wall of the upper end cover.

[0009] In the above technical solution, the sound insulation pad includes a flexible gasket body and flexible columns provided on the gasket body.

[0010] In the above technical solution, a sound insulation cylinder is provided at the position of the discharge hole.

[0011] In the above technical solution, the sound insulation cylinder includes an intermediate spacer ring and a first part and a second part located on both sides of the intermediate spacer ring. The first part is located in the first chamber, and the second part has a part extending into the second chamber.

[0012] In the above technical solution, a groove with an upward opening is recessed on the intermediate partition plate, and the end of the water outlet pipe is communicated with the groove.

[0013] In the above technical solution, the end of the water pipe opening is arranged at a position connected to the bottom wall of the groove.

[0014] In the above technical solution, the top, bottom wall and side wall of the groove are all rounded.

[0015] In the above technical solution, a pressure relief hole is provided on the partition plate. The pressure relief hole communicates with the first chamber and the first area of the second chamber. A pressure relief member is plugged at one end of the pressure relief hole located in the first chamber. The pressure relief member includes a plug facing the position of the pressure relief hole and a spring provided between the plug and the upper end cover. The spring is arranged on a spring seat.

[0016] In the above technical solution, a reserved hole is provided at a position on the upper end cover facing the spring seat, and a fastener can be screwed into the reserved hole.

[0017] The present invention has the following beneficial effects: By arranging the water outlet pipe opening and the water inlet pipe opening at the position of the intermediate housing and adjusting the partition plate from left-right partition to up-down partition, the volume of the chamber communicating with the end of the water outlet pipe is increased, so that when the water flow flows through the discharge port of the intermediate partition plate and the first chamber in sequence and then enters the end of the water outlet pipe, the water flow impact force is significantly reduced, thereby reducing the noise that may be caused by the water flow impact. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of a diaphragm pump in the prior art.

[0019] Figure 2 For Figure 1 The structural schematic diagram of the upper end cover in

[0020] Figure 3 is Figure 1 The three-dimensional structure schematic diagram of the middle housing.

[0021] Figure 4 The three-dimensional structure schematic diagram of the present invention.

[0022] Figure 5 The structural decomposition schematic diagram of the present invention.

[0023] Figure 6 The three-dimensional structure schematic diagram of the middle housing of the present invention.

[0024] Figure 7 The three-dimensional structure schematic diagram of the middle housing in another direction.

[0025] Figure 8 The three-dimensional structure schematic diagram of the sound insulation pad.

[0026] Figure 9 The three-dimensional structure schematic diagram of the sound insulation cylinder.

[0027] Figure 10 The cross-sectional schematic diagram of the present invention. Detailed implementation manners

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners: Refer to Figures 4 to 9 , a shock-absorbing diaphragm pump, comprising a middle housing 1, which includes a main housing 10 with a cylindrical structure and a middle partition 11 arranged inside the main housing 10. The main housing 10 forms a first chamber 101 above the middle partition 11, and the main housing forms a second chamber 102 below the middle partition 11. A discharge hole 12 is provided at the middle position of the middle partition 11, and a retaining wall 13 surrounding the discharge hole 12 protrudes upward on the lower end surface of the middle partition 11. The retaining wall 13 divides the second chamber 102 into a non-communicating first region 102a and a second region 102b.

[0029] Water inlet ports 2 and water outlet ports 3 are provided on both sides of the main housing. The end 2a of the water inlet port 2 communicates with the first region 102a, and the end 3a of the water outlet port 3 is located in the first chamber 101 and communicates with the first chamber 101. An upper end cover 4 covering the first chamber 101 is provided above the main housing 10, and a lower end cover 5 is provided below the main housing 10.

[0030] A diaphragm chamber 6 is provided at the connection between the lower end cover 5 and the middle main housing 10. The diaphragm chamber includes a suction chamber and a discharge chamber. A discharge valve is provided in the discharge chamber, and a suction valve is provided in the suction chamber. The structure of the diaphragm chamber 6 in this application is the same as that of the diaphragm chamber in the existing diaphragm pump. It can be understood that a diaphragm and a corresponding driving assembly for driving the diaphragm are provided at the position of the suction chamber corresponding to the diaphragm chamber. The driving assembly drives the diaphragm to deform to form the power for usefully sucking and compressing and discharging the fluid. The above-mentioned diaphragm and the corresponding driving assembly for driving the diaphragm are the same as the corresponding mechanisms in the diaphragm pump in the prior art. The structure and principle thereof will not be elaborated in this application.

[0031] In the above structure, since the water inlet 2 and the water outlet 3 are directly integrated at the side wall position of the middle housing, and the partition plate is adjusted from left-right partition to up-down partition, the volume of the chamber communicating with the end of the water outlet is increased. The end of the water outlet 3 is arranged to communicate with the first chamber 101 above the middle partition of the main housing, so that when the water flow flows through the discharge port of the middle partition and the first chamber in sequence and then enters the end of the water outlet, the impact force is significantly reduced, thereby reducing the noise that may be brought by the water flow impact.

[0032] Further, a sound-absorbing pad 7 for sealing the entire first chamber 101 is pressed between the main housing 10 and the upper end cover 4. A gap 200 is formed between the sound-absorbing pad 7 and the bottom wall of the upper end cover 4. Further, the sound-absorbing pad 7 includes a flexible gasket body 70 and flexible columns 71 provided on the gasket body 70.

[0033] Preferably, a sound-absorbing cylinder 8 is provided at the position of the discharge hole 12. Fluid through holes are distributed on the side wall of the sound-absorbing cylinder 8. Further, the sound-absorbing cylinder 8 includes an intermediate spacer 80 and a first part 81 and a second part 82 located on both sides of the intermediate spacer 80. The first part 81 is located in the first chamber 101, and the second part 82 has a part extending into the second chamber 102. Through the fluid through holes on the side wall of the sound-absorbing cylinder, a plurality of channels are formed, so that the water flow is split after flowing into / out of the fluid through holes, and then the split water flows impact each other, slowing down the water flow velocity. After going through such a process multiple times, the purpose of noise reduction is achieved.

[0034] See the attached background art Figure 3, due to the structure of the intermediate housing mold, the outlet connected to the discharge port is chamfered. When the water flow is compressed and discharged as described above, it will be cut and generate noise. Therefore, the following improvements are made in this application: a groove 11a with an upward opening is recessed on the intermediate partition 11, and the end 3a of the water outlet pipe 3 communicates with the groove 11a, and the aforementioned end 3a is arranged at the position connected to the bottom wall of the groove 11a. The setting of the groove 11a eliminates the need to open a chamfered outlet on the back of the intermediate housing 1, which further reduces the cutting noise that the water flow may generate and improves the noise reduction effect of the diaphragm pump. Further, the top of the groove 11a, as well as the bottom wall and side walls of the groove 11a, are all rounded, which further reduces the cutting generated when the water flow passes through the groove 11a.

[0035] See Figure 10 , a pressure relief hole 110 is provided on the partition plate 11. The pressure relief hole 110 communicates with the first chamber 101 and the first region 102a of the second chamber 102. A pressure relief member 9 is plugged at one end of the pressure relief hole 110 located in the first chamber 101. The pressure relief member 9 includes a plug 90 facing the position of the pressure relief hole 110 and a spring 91 provided between the plug 90 and the upper end cover 4. The spring 91 is arranged on a spring seat 92. A thrust is applied to the plug 90 through the spring 91, so that the plug 90 presses against the sound-absorbing pad 7 at the part where it abuts. The above-mentioned part of the sound-absorbing pad 7 is pressed against the pressure relief hole 100 to close the pressure relief hole 110. When the pressure in the first region 102a is too high, it pushes open the sound-absorbing pad 7 pressed against its end, thereby releasing the pressure of the high-pressure chamber to the low-pressure chamber. Further, in order to prevent the plug from shifting in position on the sound-absorbing pad 7, a plug seat 72 for accommodating the plug is provided at the corresponding position of the sound-absorbing pad 7 and the plug, and the plug is limited within the plug seat 72.

[0036] Further preferably, a reserved hole 40 is provided at the position of the upper end cover 4 facing the spring seat 92. A fastener can be screwed into the reserved hole 40. By controlling the depth of the fastener screwed into the reserved hole 40, the compression amount of the spring can be controlled, and thus the pressure relief threshold at the pressure relief hole can be controlled.

[0037] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions in the specification of this application are only the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements. The above changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A shock-absorbing diaphragm pump, characterized in that: It includes an intermediate housing (1), which includes a main housing (10) in a cylindrical structure and an intermediate partition (11) provided inside the main housing (10). The main housing (10) forms a first chamber (101) above the intermediate partition (11), and the main housing forms a second chamber (102) below the intermediate partition (11). A discharge hole (12) is provided at the middle position of the intermediate partition (11). A retaining wall (13) surrounding the discharge hole (12) protrudes upward from the lower end surface of the intermediate partition (11). The retaining wall (13) divides the second chamber (102) into a non-communicating first region (102a) and a second region (102b). A water inlet port (2) and a water outlet port (3) are provided on both sides of the main housing. The end (2a) of the water inlet port (2) communicates with the first region (102a), and the end (3a) of the water outlet port (3) is located in the first chamber (101) and communicates with the first chamber (101). An upper end cover (4) covering the first chamber (101) is provided above the main housing (10), and a lower end cover (5) is provided below the main housing (10). A sound-absorbing pad (7) that seals the entire first chamber (101) is pressed between the main housing (10) and the upper end cover (4). A gap (200) is formed between the sound-absorbing pad (7) and the bottom wall of the upper end cover (4). Water flows through the discharge hole (12) of the intermediate partition, the first chamber (101) in sequence and then enters the end of the water outlet port (3).

2. The shock-absorbing diaphragm pump according to claim 1, wherein: The sound-absorbing pad (7) includes a flexible gasket body (70) and flexible columns (71) provided on the gasket body (70).

3. The shock-absorbing diaphragm pump according to claim 2, characterized in that: A sound-absorbing cylinder (8) is provided at the position of the discharge hole (12).

4. The shock-absorbing diaphragm pump according to claim 3, characterized in that: The sound-absorbing cylinder (8) includes an intermediate spacer ring (80) and a first part (81) and a second part (82) located on both sides of the intermediate spacer ring (80). The first part (81) is located in the first chamber (101), and the second part (82) has a part extending into the second chamber (102).

5. The shock-absorbing diaphragm pump according to claim 1, wherein: A groove (11a) with an upward opening is recessed on the intermediate partition (11). The end (3a) of the water outlet port (3) communicates with the groove (11a).

6. The shock-absorbing diaphragm pump according to claim 5, wherein: The end (3a) of the water pipe port (3) is provided at the position connected to the bottom wall of the groove (11a).

7. A shock-absorbing diaphragm pump according to any one of claims 5 or 6, characterized in that: The top, bottom wall and side wall of the groove (11a) are all rounded.

8. The shock-absorbing diaphragm pump according to claim 1, wherein: A pressure relief hole (110) is provided on the intermediate partition (11). The pressure relief hole (110) communicates the first chamber (101) and the first region (102a) of the second chamber (102). A pressure relief member (9) is plugged at one end of the pressure relief hole (110) located in the first chamber (101). The pressure relief member (9) includes a plug (90) facing the position of the pressure relief hole (110) and a spring (91) provided between the plug (90) and the upper end cover (4). The spring (91) is provided on a spring seat (92).

9. The shock-absorbing diaphragm pump according to claim 8, characterized in that: A reserved hole (40) is provided at a position of the upper end cover (4) facing the spring seat (92), and a fastener can be screwed in the reserved hole (40).

10. A shock-absorbing diaphragm pump as claimed in claim 8, wherein: The spring (91) applies a thrust to the plug (90), so that the plug (90) presses against the sound insulation pad (7) at its abutting part, and the above-mentioned part of the sound insulation pad (7) is pressed on the pressure relief hole (110) to close the pressure relief hole (110).

11. The shock-absorbing diaphragm pump according to claim 8, characterized in that: A plug seat (72) for accommodating the plug (90) is provided at a position corresponding to the plug (90) of the sound insulation pad (7), and the plug (90) is limited in the plug seat (72).

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