Improved water stop diaphragm water pump

Abstract

The utility model discloses an improved water stop diaphragm water pump. The improved water stop diaphragm water pump comprises a connecting part, a first water stop valve body, a second water stop valve body and a pumping assembly which are fixedly connected in sequence, a water stop cavity is formed between the first water stop valve body and the connecting part, a water stop seat is arranged in the water stop cavity, the interior of the water stop seat is a communicating cavity communicating with the valve plate cavity, and a water stop diaphragm is arranged in the water stop cavity; the first water stop valve body is provided with a water stop channel and an exhaust channel which are communicated with the water inlet connector and the balance cavity. When the water level rises, the water inlet connector is communicated with the balance cavity through the water stop channel, the water pressure of the balance cavity rises, and therefore water leakage of the water stop base is avoided. Bubbles are discharged by arranging the exhaust channel, so that the pressure of the water stop valve plate on the water stop seat is conveniently increased; and the liquid can directly enter the water stop cavity through the water stop diaphragm via the communicating cavity, so that the pumping flow rate of the liquid can be increased.

Description

Technical Field

[0001] The utility model relates to the field of diaphragm water pumps, in particular to an improved water-stopping diaphragm water pump. Background Art

[0002] The existing sealing structure designed on the market uses a compression spring to press a steel ball or a rubber head for sealing. After running for many times, there will be poor sealing performance and poor long-term stability. In addition, the sealing performance of the existing diaphragm water pump is completely limited by the size of the compression spring force, but the small space for installing the compression spring limits the adjustment of the compression spring. When the compression spring force is set too large, the motor load will increase and it will be difficult to pump the liquid to the water outlet, thereby causing damage to the motor. When the compression spring force is set too large, when dealing with the high water pressure generated by the high water level, it is easy to cause liquid to leak from the steel ball or the rubber head.

[0003] Moreover, the existing utility model patent (patent number CN219974753U) discloses a micro-diaphragm fluid pump with a check function, including a pump body assembly, a conveying power assembly, and a water-stopping device. The cover body is provided with a water inlet nozzle, a water outlet nozzle, a diaphragm movable groove, and a connecting channel for connecting the outlet end of the water inlet nozzle and the movable groove of the diaphragm; the first water-stop valve body has a third through hole, a fourth through hole, and a fluid outflow channel, the water-stop diaphragm is respectively provided with a first through hole and a second through hole corresponding to the outlet end of the water inlet nozzle and the inlet end of the water outlet nozzle, and a movable part with a deformation structure is provided corresponding to the movable groove of the diaphragm, the movable part is located in the water-stop control cavity, and the water-stop elastic member is arranged between the movable part and the movable groove of the diaphragm. The gas in the cavity between the water-stop diaphragm and the fixed cover body cannot be completely discharged, which easily leads to a decrease in the pressure of the cavity and insufficient downward pressure of the water-stop diaphragm, thereby causing water leakage of the water-stop seat. Moreover, the first water-stop valve body requires the pumped liquid to change direction several times before it can flow into the water-stop seat and the fluid outflow channel, which results in poor liquid flow and reduced liquid flow rate and flow rate, and is not conducive to use in high-flow scenarios. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide an improved water-stop diaphragm water pump to solve the above-mentioned problems.

[0005] To solve the above technical problems, the technical solution of the present utility model is: an improved water-stop diaphragm pump, including a connection part, a first water-stop valve body, a second water-stop valve body and a pumping assembly fixedly connected in sequence; a valve piece cavity and a water inlet cavity are provided on the second water-stop valve body, a water-stop cavity is provided between the first water-stop valve body and the connection part, a water-stop seat which is hollow is arranged in the water-stop cavity, the inside of the water-stop seat is a communication cavity communicating with the valve piece cavity, a water-stop diaphragm is arranged in the water-stop cavity, one end of the water-stop diaphragm abuts against the water-stop seat, and the water-stop diaphragm divides one side of the water-stop cavity into a balance cavity; a water inlet joint and a water outlet joint are arranged on the connection part, a water inlet channel communicating with the water inlet joint is provided on the first water-stop valve body, and a water outlet channel communicating with the water outlet joint is also provided; the other end of the water outlet channel communicates with the water-stop cavity, and one end of the water inlet channel communicates with the water inlet cavity; the pumping assembly communicates the water inlet cavity and the valve piece cavity; a water-stop channel and an exhaust channel communicating the water inlet joint and the balance cavity are provided on the first water-stop valve body.

[0006] Preferably, a limiting boss is arranged on one side of the water-stop diaphragm close to the balance cavity, an elastic member is sleeved on the limiting boss, one end of the elastic member abuts against the water-stop diaphragm, and the other end abuts against the first water-stop valve body. The water-stop diaphragm, the elastic member and the water-stop seat are on the same axis.

[0007] Preferably, the elastic member is a compression spring.

[0008] Preferably, the water outlet channel includes a first channel having the same axis as the water outlet joint and a second channel perpendicular to the water-stop cavity and communicating with the first channel.

[0009] Preferably, the cross-section of the second channel is circular.

[0010] Preferably, a check valve piece is arranged in the valve piece cavity.

[0011] Preferably, a gasket is also arranged between the first water-stop valve body and the second water-stop valve body.

[0012] The technical effects of the present utility model are mainly reflected as follows: When the water level rises, the water pressure in the water inlet joint increases. Through the water stop channel, the water inlet joint is connected to the balance cavity, so that the water pressure in the balance cavity increases, which makes the water stop valve plate tightly press against the water stop seat, thus avoiding water leakage at the water stop seat. And by setting the exhaust channel, the air bubbles in the balance cavity can be normally discharged into the water inlet joint, which is convenient for increasing the pressure of the water stop valve plate on the water stop seat. Also, by setting the hollow water stop seat, the liquid pumped in the valve plate cavity can directly enter the water stop cavity from the communication cavity of the water stop seat through the water stop diaphragm, thus facilitating the increase of the pumping flow rate of the liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a perspective view of the present utility model;

[0014] Figure 2 is Figure 1 an exploded view of

[0015] Figure 3 is Figure 1 a top view of

[0016] Figure 4 is Figure 3 a cross-sectional view taken along line A-A of

[0017] Figure 5 is a schematic diagram of the liquid flow direction of the present utility model;

[0018] Figure 6 is a top view of the connection part.

[0019] Reference numerals are: 1 - connection part, 11 - water inlet joint, 12 - water outlet joint, 2 - first water stop valve body, 21 - water stop cavity, 22 - water stop seat, 23 - communication cavity, 24 - water inlet channel, 25 - water outlet channel, 251 - first channel, 252 - second channel, 26 - water stop channel, 27 - exhaust channel, 3 - second water stop valve body, 31 - sealing gasket, 4 - pumping assembly, 5 - valve plate cavity, 51 - check valve plate, 6 - water inlet cavity, 7 - water stop diaphragm, 71 - limiting boss, 8 - balance cavity, 9 - elastic member. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following further details the specific embodiments of the present utility model in conjunction with the drawings, so that the technical solutions of the present utility model are easier to understand and master.

[0021] In this embodiment, it should be understood that the orientation or positional relationship indicated by terms such as "middle", "upper", "lower", "top", "right side", "left end", "above", "back", "middle part", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0022] In addition, in this specific embodiment, if the connection or fixing method between components is not specifically described, the connection or fixing method can be bolt fixing, pin fixing, or pin shaft connection, etc., which are commonly used in the prior art. Therefore, it will not be described in detail in this embodiment.

[0023] The present utility model provides an improved water-stop diaphragm pump. As shown in the figure, it includes a connecting part 1, a first water-stop valve body 2, a second water-stop valve body 3, and a pumping assembly 4 that are fixedly connected in sequence. A valve piece cavity 5 and a water inlet cavity 6 are formed on the second water-stop valve body 3. A water-stop cavity 21 is formed between the first water-stop valve body 2 and the connecting part 1. A water-stop seat 22 with a hollow structure is arranged in the water-stop cavity 21. The inside of the water-stop seat 22 is a communication cavity 23 that communicates with the valve piece cavity 5. A water-stop diaphragm 7 is arranged in the water-stop cavity 21. One end of the water-stop diaphragm 7 abuts against the water-stop seat 22. The water-stop diaphragm 7 divides one side of the water-stop cavity 21 into a balance cavity 8. An inlet joint 11 and an outlet joint 12 are arranged on the connecting part 1. A water inlet channel 24 communicating with the inlet joint 11 and a water outlet channel 25 communicating with the outlet joint 12 are formed on the first water-stop valve body 2. The other end of the water outlet channel 25 communicates with the water-stop cavity 21. One end of the water inlet channel 24 communicates with the water inlet cavity 6. The pumping assembly 4 communicates the water inlet cavity 6 with the valve piece cavity 5.

[0024] A water-stop channel 26 and an exhaust channel 27 communicating the inlet joint 11 with the balance cavity 8 are formed on the first water-stop valve body 2. When the water level rises, the water pressure in the inlet joint 11 increases. Through the water-stop channel 26, the inlet joint 11 is communicated with the balance cavity 8, so that the water pressure in the balance cavity 8 increases, thereby pressing the water-stop valve piece tightly against the water-stop seat 22, thus avoiding water leakage of the water-stop seat 22. And by arranging the exhaust channel 27, the air bubbles in the balance cavity 8 can be normally discharged into the inlet joint 11, which is convenient for increasing the pressure of the water-stop valve piece on the water-stop seat 22. Also, by arranging the hollow water-stop seat 22, the liquid pumped in the valve piece cavity 5 can directly enter the water-stop cavity 21 from the communication cavity 23 of the water-stop seat 22 through the water-stop diaphragm 7, thereby facilitating the improvement of the pumping flow rate of the liquid.

[0025] Preferably, a limiting boss 71 is provided on one side of the water-stop diaphragm 7 close to the balance cavity 8. An elastic member 9 is sleeved on the limiting boss 71. One end of the elastic member 9 abuts against the water-stop diaphragm 7, and the other end abuts against the first water-stop valve body 2. The water-stop diaphragm 7, the elastic member 9 and the water-stop seat 22 are on the same axis. A constant pre-pressure is generated by the elastic member 9 so that the water-stop valve plate always abuts against the water-stop seat 22. Preferably, the elastic member 9 is a compression spring.

[0026] Preferably, the water outlet channel 25 includes a first channel 251 having the same axis as the axis of the water outlet joint 12 and a second channel 252 perpendicular to the water-stop cavity 21 and communicating with the first channel 251. Preferably, the cross-section of the second channel 252 is circular, so that the cross-sectional area of the second channel 252 is the largest, thereby increasing the flow rate of the liquid.

[0027] Preferably, a check valve plate 51 is provided in the valve plate cavity 5 to prevent the liquid pumped by the pumping assembly 4 from flowing back to the pumping assembly 4, thereby realizing continuous pumping of the liquid.

[0028] Preferably, a gasket 31 is further provided between the first water-stop valve body 2 and the second water-stop valve body 3 to prevent water leakage between the first water-stop valve body 2 and the second water-stop valve body 3.

[0029] The technical effects of the present invention are mainly reflected in that when the water level rises, the water pressure in the water inlet joint increases. Through the water-stop channel, the water inlet joint is communicated with the balance cavity, so that the water pressure in the balance cavity increases, and then the water-stop valve plate tightly presses the water-stop seat, thereby preventing water leakage from the water-stop seat. And by providing an exhaust channel, the air bubbles in the balance cavity can be normally discharged into the water inlet joint, which is convenient for increasing the pressure of the water-stop valve plate on the water-stop seat. Also, by providing a hollow water-stop seat, the liquid pumped in the valve plate cavity can directly enter the water-stop cavity from the communication cavity of the water-stop seat through the water-stop diaphragm, which is convenient for increasing the pumping flow rate of the liquid.

[0030] Of course, the above are only typical examples of the present invention. In addition, the present invention can also have many other specific implementation manners. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. An improved water-stop diaphragm pump, characterized in that, It includes a connecting part, a first water stop valve body, a second water stop valve body and a pumping assembly that are fixedly connected in sequence; a valve piece cavity and a water inlet cavity are provided on the second water stop valve body, a water stop cavity is provided between the first water stop valve body and the connecting part, a water stop seat which is hollow is arranged in the water stop cavity, the inside of the water stop seat is a communicating cavity communicated with the valve piece cavity, a water stop diaphragm is arranged in the water stop cavity, one end of the water stop diaphragm abuts against the water stop seat, and the water stop diaphragm divides one side of the water stop cavity into a balance cavity; a water inlet joint and a water outlet joint are arranged on the connecting part, a water inlet channel communicated with the water inlet joint is provided on the first water stop valve body, and a water outlet channel communicated with the water outlet joint is also provided; the other end of the water outlet channel is communicated with the water stop cavity, and one end of the water inlet channel is communicated with the water inlet cavity; the pumping assembly communicates the water inlet cavity and the valve piece cavity; a water stop channel and an exhaust channel that communicate the water inlet joint and the balance cavity are provided on the first water stop valve body.

2. The improved water-stop diaphragm pump according to claim 1, characterized in that, A limiting boss is arranged on the side of the water stop diaphragm close to the balance cavity, an elastic member is sleeved on the limiting boss, one end of the elastic member abuts against the water stop diaphragm, and the other end abuts against the first water stop valve body. The water stop diaphragm, the elastic member and the water stop seat are on the same axis.

3. The improved water-stop diaphragm pump according to claim 2, wherein The elastic member is a compression spring.

4. An improved water stop diaphragm pump as claimed in claim 1, characterized in that, The water outlet channel includes a first channel having the same axis as the water outlet joint and a second channel perpendicular to the water stop cavity and communicated with the first channel.

5. The improved water-stop diaphragm pump according to claim 4, wherein, The cross-section of the second channel is circular.

6. An improved water stop diaphragm pump according to claim 1, characterized in that, A check valve piece is arranged in the valve piece cavity.

7. An improved water-stop diaphragm pump according to claim 1, characterized in that, A gasket is also arranged between the first water stop valve body and the second water stop valve body.

Images