Diaphragm pump capable of preventing air trapping in pump head
By designing a longitudinal inlet and outlet on the diaphragm pump head and installing a baffle in the inlet chamber to block the water flow path, the problem of air trapping inside the pump head is solved, improving the pump head and working efficiency while reducing production complexity and cost.
Patent Information
- Application Number
- CN202422851926.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-11-22
AI Technical Summary
Existing horizontal diaphragm pumps are prone to trapped air in the pump head during use, which leads to a reduction in head and efficiency. Furthermore, the existing exhaust structure increases costs and production complexity.
The pump head is designed with longitudinally distributed inlet and outlet ports on the upper part, and a baffle is installed in the inlet chamber to block the connection between the upper and lower areas on the front side of the inlet chamber. Combined with the pump head retaining ring and valve seat retaining ring, the inlet chamber and outlet chamber are formed to prevent water from flowing directly into the lower front part and to prevent air trapping in the pump head.
It effectively prevents air trapping inside the pump head, ensuring the head and working efficiency of the diaphragm pump, simplifying the production process, improving assembly efficiency, and reducing costs.
Smart Images
Figure CN223511080U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of diaphragm pumps, and in particular to a diaphragm pump that prevents air from getting trapped inside the pump head. Background Technology
[0002] A diaphragm pump is a device that uses an electric motor to drive a diaphragm to reciprocate, thereby utilizing the volume change of the diaphragm cavity to draw fluid from the fluid inlet channel into the diaphragm cavity and then output fluid from the diaphragm cavity to the fluid outlet channel, thus achieving fluid transport.
[0003] Existing horizontal diaphragm pumps typically include a horizontally mounted pump body, pump head, pump base, valve seat, swing bracket, diaphragm, and motor. The pump head usually has an inlet and an outlet, and the pump head can be separated from the valve seat mounted on the pump base to form an inlet chamber and an outlet chamber, while the valve seat can form a diaphragm chamber with the pump base. However, since horizontal diaphragm pumps are used in a horizontal installation, and the inlet and outlet are usually located at the top of the pump head, air trapping can easily occur in the inlet chamber inside the pump head during use, leading to a reduction in the pump's head and efficiency.
[0004] Therefore, in order to solve the problem of trapped air, some pumps are equipped with an exhaust structure consisting of a valve body, a ball, and a pressure spring. However, adding an extra exhaust structure is costly and requires an additional production step to install a drainage structure, which leads to a decrease in production efficiency. Utility Model Content
[0005] The purpose of this invention is to provide a diaphragm pump that prevents air from getting trapped inside the pump head. It has the advantages of preventing air from getting trapped inside the pump head and being easy to manufacture and low in cost.
[0006] To achieve the above objectives, the solution of this utility model is:
[0007] A diaphragm pump for preventing air trapping in the pump head includes a horizontally positioned pump body, a pump head, a pump seat, and a valve seat; one end of the pump seat is connected to the horizontally positioned pump body, the pump head is mounted on the other end of the pump seat, and the valve seat is installed between the pump seat and the pump head; an inlet chamber and an outlet chamber are separated between the pump head and the valve seat, while a diaphragm cavity is formed between the valve seat and the pump seat; characterized in that:
[0008] The pump head is provided with a longitudinally distributed inlet and outlet at the top; the outlet is connected to the outlet chamber; the inlet is connected to the upper part of the front side of the inlet chamber.
[0009] The water outlet chamber and the water inlet chamber are radially distributed inward and outward on a vertical plane. The water inlet chamber is arranged around the outer periphery of the water outlet chamber, and a partition is provided in the middle of the front side of the water inlet chamber near the water inlet, which is located below the water inlet. The partition blocks the connection between the upper and lower areas of the water inlet chamber near the front side of the water inlet.
[0010] Furthermore, a pump head retaining ring protrudes from the middle of the pump head towards the valve seat. The radial inner side of the pump head retaining ring is the first water outlet area connected to the water outlet, and the radial outer side of the pump head retaining ring is the first water inlet area connected to the water inlet.
[0011] A valve seat retaining ring protrudes from the middle of the valve seat towards the pump head. The inner and outer sides of the valve seat retaining ring are the second water outlet area and the second water inlet area, respectively. The second water outlet area and the second water inlet area are respectively connected to the diaphragm cavity.
[0012] When the pump head is combined with the valve seat, the pump head retaining ring and the valve seat retaining ring abut against each other, the first water inlet area and the second water inlet area combine to form the water inlet chamber, and the first water outlet area and the second water outlet area combine to form the water outlet chamber.
[0013] The baffle is formed in the middle of the first water outlet area on the outer side of the pump head retaining ring, near the water inlet. The baffle is also tightly fitted to the outer wall of the valve seat retaining ring in the second water outlet area and the bottom wall of the second water inlet area.
[0014] Furthermore, the pump head retaining ring is provided with a sealing ring groove, and a sealing ring is installed in the sealing ring groove; the valve seat retaining ring extends into the sealing ring groove and is tightly fitted with the sealing ring.
[0015] Furthermore, the valve seat has two water inlet valves distributed vertically on the front and rear sides of the second water inlet area, and the pump head has four water inlet recesses on the front, rear, and top and bottom corresponding to each water inlet valve; the baffle is located between the two water inlet recesses on the front side of the pump head.
[0016] Furthermore, it also includes a motor, a swing bracket, and a diaphragm; the motor is installed in the horizontal pump body or is integrally formed with the horizontal pump body; the output end of the motor extends laterally into the pump seat and is installed with the swing bracket, the swing bracket is located between the valve seat and the pump seat, and the diaphragm is installed between the swing bracket and the valve seat; the diaphragm cavity is formed between the diaphragm in the valve seat and the pump seat.
[0017] Furthermore, the bottom of the horizontally placed pump body is provided with fixed support feet.
[0018] With the above technical solution, when the diaphragm pump is horizontally installed, water enters through the inlet at the top of the pump head. The water first fills the upper front part of the inlet chamber. Then, due to the obstruction of the baffle, it does not flow directly into the lower front part, but instead flows sequentially through the upper rear part and the lower rear part of the inlet chamber before flowing to the lower front part. This avoids the situation where air is trapped in the upper rear part when the water first fills the upper and lower front parts and the lower rear part of the inlet chamber, thus preventing air trapping in the pump head and ensuring that the diaphragm pump's head and operating efficiency meet the requirements. Furthermore, the baffle can be directly formed inside the inlet chamber, eliminating the need for additional installation procedures such as installing an exhaust structure, resulting in higher product assembly efficiency. Attached Figure Description
[0019] Figure 1 This is an exploded view of an embodiment of the present utility model;
[0020] Figure 2 This is a perspective view of the pump head according to an embodiment of the present utility model;
[0021] Figure 3 This is a cross-sectional view (a) of an embodiment of the present utility model;
[0022] Figure 4 This is a cross-sectional view (II) of an embodiment of the present utility model;
[0023] Figure 5 This is a cross-sectional view (iii) of an embodiment of the present utility model.
[0024] Labeling: 1. Horizontal pump body, 11. Fixed support leg, 2. Pump head, 21. Inlet, 22. Outlet, 23. Baffle plate, 24. Pump head retaining ring, 241. Sealing ring groove, 242. First outlet area, 25. First inlet area, 26. Inlet recess, 261. Pump base, 3. Valve seat, 4. Valve seat retaining ring, 41. Second outlet area, 42. Outlet valve, 421. Second inlet area, 43. Inlet valve, 431. Motor, 5. Output end, 51. Swing bracket, 6. Diaphragm, 7. Inlet chamber, 8. Outlet chamber, 9. Diaphragm chamber, 10. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0026] like Figure 1 and Figure 5 As shown, a diaphragm pump for preventing air trapping in the pump head according to this embodiment includes a horizontally placed pump body 1, a pump head 2, a pump base 3, a valve seat 4, a motor 5, a swing bracket 6, and a diaphragm 7.
[0027] The bottom of the horizontally placed pump body 1 may be provided with a fixed support foot 11 to facilitate the fixing of the diaphragm pump.
[0028] One end of the pump base 3 is connected to the horizontally placed pump body 1, the pump head 2 is covered and installed on the other end of the pump base 3, and the valve seat 4 is installed between the pump base 3 and the pump head 2; the pump head 2 and the valve seat 4 are separated to form an inlet chamber 8 and an outlet chamber 9, while the valve seat 4 and the pump base 3 form a diaphragm chamber 10.
[0029] The motor 5 is installed inside the horizontal pump body 1 or is integrally formed with the horizontal pump body 1; in this embodiment, the motor 5 and the horizontal pump body 1 are an integral structure.
[0030] The output end 51 of the motor 5 extends laterally into the pump seat 3 and is installed with the swing bracket 6. The swing bracket 6 is located between the valve seat 4 and the pump seat 3, while the diaphragm 7 is installed between the swing bracket 6 and the valve seat 4. The diaphragm cavity 10 is formed between the diaphragm 7 in the valve seat 4 and the pump seat 3.
[0031] Thus, the motor 5 drives the swing bracket 6 to rotate, which in turn drives the diaphragm 7 to move, so that the water in the inlet chamber 8 is drawn in by the diaphragm cavity 10 and then sent out to the outlet chamber 9, thereby realizing the suction.
[0032] In this embodiment, the pump head 2 is provided with a longitudinally distributed inlet 21 and outlet 22 on its upper part; the outlet 22 is connected to the outlet chamber 9; the inlet 21 is connected to the upper part of one side of the inlet chamber 8.
[0033] The water outlet chamber 9 and the water inlet chamber 8 are radially distributed inward and outward on the vertical plane. The water inlet chamber 8 is arranged around the outer periphery of the water outlet chamber 9. A partition 23 is provided in the middle of the water inlet chamber 8 near the front side of the water inlet 21 and is located below the water inlet 21. The partition 23 blocks the connection between the upper and lower areas of the water inlet chamber 8 near the front side of the water inlet 21.
[0034] Therefore, when the diaphragm pump is horizontally mounted, water enters through the inlet 21 at the top of the pump head 2. The water first fills the upper front part of the inlet chamber 8. Then, due to the obstruction of the baffle 23, it does not flow directly into the lower front part, but instead flows sequentially through the upper rear part and the lower rear part of the inlet chamber 8 before flowing to the lower front part. This avoids the situation where air is trapped in the upper rear part when the water first fills the upper and lower front parts and the lower rear part of the inlet chamber 8, thus preventing air trapping in the pump head 2 and ensuring that the head and working efficiency of the diaphragm pump meet the requirements. Furthermore, the baffle 23 can be directly formed inside the inlet chamber 8 without additional installation procedures, resulting in high product assembly efficiency.
[0035] like Figure 2 The pump head 2 has a pump head retaining ring 24 protruding from the middle towards the valve seat 4. The inner radial side of the pump head retaining ring 24 is the first water outlet area 25 connected to the water outlet 22, and the outer radial side of the pump head retaining ring 24 is the first water inlet area 26 connected to the water inlet 21.
[0036] like Figure 1 The valve seat 4 has a valve seat retaining ring 41 protruding from the middle towards the pump head 2. The inner and outer sides of the valve seat retaining ring 41 are the second water outlet area 42 and the second water inlet area 43, respectively. The second water outlet area 42 and the second water inlet area 43 are respectively connected to the diaphragm cavity 10.
[0037] See Figure 3When the pump head 2 is combined with the valve seat 4, the pump head retaining ring 24 and the valve seat retaining ring 41 abut against each other, the first water inlet area 26 and the second water inlet area 43 combine to form the water inlet chamber 8, and the first water outlet area 25 and the second water outlet area 42 combine to form the water outlet chamber 9.
[0038] See Figure 4 The baffle 23 is formed in the middle of the first water outlet area 25 on the outer side of the pump head retaining ring 24 near the water inlet 21. The baffle 23 is also closely fitted to the outer wall of the valve seat retaining ring 41 in the second water outlet area 42 and the bottom wall of the second water inlet area 43.
[0039] The baffle 23 can be installed on the pump head 2, which facilitates manufacturing and product assembly. Of course, the baffle 23 can also be installed on the valve seat 4.
[0040] In this embodiment, as Figure 4 As shown, the pump head retaining ring 24 may be provided with a sealing ring groove 241, and a sealing ring 242 is installed in the sealing ring groove 241; the valve seat retaining ring 41 extends into the sealing ring groove 241 and is tightly fitted with the sealing ring 242.
[0041] For example Figure 1 and Figure 2 As shown, the valve seat 4 has two inlet valves 431 distributed vertically on the front and rear sides of the second inlet zone 43, and four outlet valves 421 can be provided in the second outlet zone 42, with each outlet valve 421 radially opposite to each inlet valve 431. The inlet valves 431 and outlet valves 421 can each be provided with inlet and outlet valve core structures to cooperate with the swing bracket 6 and diaphragm 7 to achieve the purpose of suction.
[0042] The first water inlet area 26 of the pump head 2 has four water inlet recesses 261 corresponding to each water inlet valve 431, located at the front, back, top, and bottom. The baffle 23 is located between the two water inlet recesses 261 at the front and bottom of the pump head 2. Thus, when water enters the pump head 2, the liquid will flow sequentially through the upper water inlet recess 261 at the front, the upper and lower water inlet recesses 261 at the rear, and then flow to the lower water inlet recess 261 at the front, thereby filling the water inlet chamber 8 of the pump head 2 and preventing air entrapment.
[0043] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected by this utility model. It should be noted that for those skilled in the art, equivalent changes and modifications without departing from the principle of this utility model should still fall within the protection scope of this utility model.
[0044] In the description of the embodiments of this application, it should be understood that the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships commonly used when the product is in use, or the orientations or positional relationships commonly understood by those skilled in the art. These are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In the description of this application, "a plurality of" and "several" mean two or more, unless otherwise explicitly specified.
Claims
1. A diaphragm pump for preventing air trapping in the pump head, comprising a horizontally positioned pump body, a pump head, a pump seat, and a valve seat; one end of the pump seat is connected to the horizontally positioned pump body, the pump head is mounted on the other end of the pump seat, and the valve seat is installed between the pump seat and the pump head; an inlet chamber and an outlet chamber are separated between the pump head and the valve seat, while a diaphragm cavity is formed between the valve seat and the pump seat; characterized in that: The pump head is provided with a longitudinally distributed inlet and outlet at the top; the outlet is connected to the outlet chamber; the inlet is connected to the upper part of the front side of the inlet chamber. The water outlet chamber and the water inlet chamber are radially distributed inward and outward on a vertical plane. The water inlet chamber is arranged around the outer periphery of the water outlet chamber, and a partition is provided in the middle of the front side of the water inlet chamber near the water inlet, which is located below the water inlet. The partition blocks the connection between the upper and lower areas of the water inlet chamber near the front side of the water inlet.
2. A diaphragm pump for preventing air trapping in the pump head according to claim 1, characterized in that: The pump head has a pump head retaining ring protruding from the middle of the pump head towards the valve seat. The radial inner side of the pump head retaining ring is the first water outlet area connected to the water outlet, and the radial outer side of the pump head retaining ring is the first water inlet area connected to the water inlet. A valve seat retaining ring protrudes from the middle of the valve seat towards the pump head. The inner and outer sides of the valve seat retaining ring are the second water outlet area and the second water inlet area, respectively. The second water outlet area and the second water inlet area are respectively connected to the diaphragm cavity. When the pump head is combined with the valve seat, the pump head retaining ring and the valve seat retaining ring abut against each other, the first water inlet area and the second water inlet area combine to form the water inlet chamber, and the first water outlet area and the second water outlet area combine to form the water outlet chamber. The baffle is formed in the middle of the first water outlet area on the outer side of the pump head retaining ring, near the water inlet. The baffle is also tightly fitted to the outer wall of the valve seat retaining ring in the second water outlet area and the bottom wall of the second water inlet area.
3. A diaphragm pump for preventing air trapping in the pump head according to claim 2, characterized in that: The pump head retaining ring is provided with a sealing ring groove, and a sealing ring is installed in the sealing ring groove; the valve seat retaining ring extends into the sealing ring groove and is tightly fitted with the sealing ring.
4. A diaphragm pump for preventing air trapping in the pump head according to claim 2, characterized in that: The valve seat has two water inlet valves distributed vertically on the front and rear sides of the second water inlet area, and the pump head has four water inlet recesses on the front, rear, and top and bottom corresponding to each water inlet valve; the baffle is located between the two water inlet recesses on the front side of the pump head.
5. A diaphragm pump for preventing air trapping in the pump head according to claim 1, characterized in that: It also includes a motor, a swing bracket, and a diaphragm; the motor is installed in the horizontal pump body or is integrally formed with the horizontal pump body; the output end of the motor extends laterally into the pump seat and is installed with the swing bracket, the swing bracket is located between the valve seat and the pump seat, and the diaphragm is installed between the swing bracket and the valve seat; the diaphragm cavity is formed between the diaphragm in the valve seat and the pump seat.
6. A diaphragm pump for preventing air trapping in the pump head according to claim 1, characterized in that: The bottom of the horizontally placed pump body is equipped with fixed support feet.