A diaphragm pump

Abstract

The utility model relates to a diaphragm pump belongs to diaphragm pump field, the utility model discloses a transmission box body, reciprocating axle and diaphragm, the both ends of transmission box body each installation has a pump cover, forms the pump chamber between transmission box body and pump cover, the diaphragm is located in the pump chamber, and the diaphragm divides the pump chamber into drive chamber and pump chamber, the reciprocating axle installs in transmission box body, its structural characteristics lie in: still include float rod, drive shaft and eccentric wheel, the both ends of reciprocating axle each installation has a float rod, the diaphragm installs on the float rod, the drive shaft installs in transmission box body, the eccentric wheel installs on the drive shaft, and the eccentric wheel is located in reciprocating axle, one end of drive shaft is connected with drive mechanism, at least one gas pipe is installed in transmission box body, the both ends of gas pipe are connected with two drive chambers respectively, be provided with the air supplement hole on transmission box body, the air supplement hole is connected with drive chamber.

Description

Technical Field

[0001] This utility model relates to a diaphragm pump and belongs to the field of diaphragm pumps. Background Technology

[0002] When a diaphragm pump is working, it uses compressed air or electricity as a power source. The reciprocating motion of the diaphragm changes the volume within the pump chamber, thereby achieving liquid intake and discharge. In existing technologies, the diaphragm of a diaphragm pump is directly connected to the reciprocating shaft. Controlling the flow rate or head of the diaphragm pump requires changing the rotational speed of the drive mechanism. Since the rotational speed of the drive mechanism is constant, changing the flow rate or head requires replacing the corresponding drive mechanism. This allows for control of the diaphragm's movement speed, thus achieving flow rate or head control. Utility Model Content

[0003] The purpose of this invention is to overcome the above-mentioned shortcomings in the prior art and to provide a diaphragm pump with a reasonable structural design.

[0004] The technical solution adopted by this utility model to solve the above problems is as follows: The diaphragm pump includes a transmission housing, a reciprocating shaft, and a diaphragm. A pump cover is installed at each end of the transmission housing, forming a pump chamber between the transmission housing and the pump cover. The diaphragm is located inside the pump chamber and divides the pump chamber into a drive chamber and a pump chamber. The reciprocating shaft is installed inside the transmission housing. Its structural features are: it also includes a floating rod, a drive shaft, and an eccentric wheel. A floating rod is installed at each end of the reciprocating shaft, and the diaphragm is installed on the floating rod. The drive shaft is installed inside the transmission housing, and the eccentric wheel is installed on the drive shaft and located inside the reciprocating shaft.

[0005] Furthermore, one end of the drive shaft is connected to the drive mechanism.

[0006] Furthermore, at least one air passage pipe is installed inside the transmission housing, and the two ends of the air passage pipe are respectively connected to two drive chambers.

[0007] Furthermore, the transmission housing is provided with an air inlet, which is connected to the drive chamber.

[0008] Furthermore, the other end of the drive shaft is used to install an air pump or a crank handle and is exposed outside the transmission housing. When the air pump is installed, it can be used to replenish gas in the drive chamber. When the crank handle is installed, it can be used to manually adjust the position of the reciprocating shaft.

[0009] Furthermore, the transmission housing is provided with a drain hole, which is connected to the drive chamber.

[0010] Furthermore, a reciprocating shaft support is installed inside the transmission housing, and the reciprocating shaft is mounted on the reciprocating shaft support.

[0011] Furthermore, a sealing ring support is installed inside the transmission housing, and a sealing ring is installed on the sealing ring support. The sealing ring is fitted onto the reciprocating shaft.

[0012] Compared with the prior art, the present invention has the following advantages: the diaphragm in the diaphragm pump is connected to the reciprocating shaft through a floating rod, and gas can be supplied to the drive chamber through the air supply hole. When the speed of the drive mechanism is constant, the air pressure in the drive chamber can be controlled by controlling the air supply pressure in the air supply hole, thereby controlling the flow rate or head height of the diaphragm pump. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural schematic diagram of the diaphragm pump according to an embodiment of the present invention.

[0014] Figure 2 This is a cross-sectional structural schematic diagram of the diaphragm pump according to an embodiment of the present invention.

[0015] Figure 3 This is a cross-sectional structural schematic diagram of the diaphragm pump according to an embodiment of the present invention.

[0016] Figure 4 This is an exploded structural diagram of the diaphragm pump according to an embodiment of the present invention.

[0017] In the figure: 1. Drive mechanism; 2. Transmission housing; 3. Reciprocating shaft; 4. Floating rod; 5. Diaphragm; 6. Drive shaft; 7. Eccentric wheel; 8. Drive chamber; 9. Air inlet pipe; 10. Air outlet; 11. Exhaust hole; 12. Reciprocating shaft support; 13. Sealing ring support. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0019] Example

[0020] See Figures 1 to 4As shown in the accompanying drawings, the structures, proportions, sizes, etc., depicted in this specification are merely for illustrative purposes to aid those skilled in the art and to provide a clear understanding. They are not intended to limit the scope of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the use of terms such as "upper," "lower," "left," "right," "middle," and "one" in this specification is solely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0021] The diaphragm pump in this embodiment includes a transmission housing 2, a reciprocating shaft 3, a floating rod 4, a diaphragm 5, a drive shaft 6, an eccentric wheel 7, and an air passage pipe 9. A pump cover (not shown in the figure) is installed at each end of the transmission housing 2, forming a pump chamber between the transmission housing 2 and the pump cover. A reciprocating shaft support 12 and a sealing ring support 13 are installed inside the transmission housing 2. The reciprocating shaft 3 is installed on the reciprocating shaft support 12, and a sealing ring is installed on the sealing ring support 13. The sealing ring is fitted over the reciprocating shaft 3.

[0022] In this embodiment, the diaphragm 5 is located inside the pump chamber, and the diaphragm 5 divides the pump chamber into a drive chamber 8 and a pump chamber. The reciprocating shaft 3 is installed inside the transmission housing 2, and at least one air pipe 9 is installed inside the transmission housing 2. The two ends of the air pipe 9 are respectively connected to the two drive chambers 8.

[0023] In this embodiment, a floating rod 4 is installed at each end of the reciprocating shaft 3, a diaphragm 5 is installed on the floating rod 4, a drive shaft 6 is installed inside the transmission housing 2, an eccentric wheel 7 is installed on the drive shaft 6, and the eccentric wheel 7 is located inside the reciprocating shaft 3.

[0024] In this embodiment, one end of the drive shaft 6 is connected to the drive mechanism 1, and the other end of the drive shaft 6 is used to install an air pump or a crank and is exposed outside the transmission housing. When the air pump is installed, it can be used to replenish gas in the drive chamber. When the crank is installed, it can be used to manually adjust the position of the reciprocating shaft. The air pump is connected to the air inlet 10 through a pipeline. The transmission housing 2 is provided with an air inlet 10 and a drain hole 11. Both the air inlet 10 and the drain hole 11 are connected to the drive chamber 8.

[0025] Specifically, when the diaphragm pump is working, it drives the reciprocating shaft 3 and the air supply pump through the drive shaft 6. Two air supply holes 10 are provided on the transmission housing 2 to replenish and pressurize the two drive chambers 8 respectively, ensuring that the air pressure in the two drive chambers 8 is constant. The drive shaft 6 is driven to rotate through the drive mechanism 1, and the drive shaft 6 drives the eccentric wheel 7 to drive the reciprocating shaft 3 to move back and forth. As the eccentric wheel 7 rotates, the reciprocating shaft 3 moves back and forth. The reciprocating shaft 3 drives the floating rod 4 to push and pull the diaphragm 5 to realize the reciprocating motion of the diaphragm 5. The airflow flows back and forth through the air pipe 9. The internal air pressure can determine how much medium can be transported. Air is replenished into the drive chamber 8 through the air supply holes 10 to control the air pressure in the drive chamber 8, thereby realizing the control of the flow rate or head of the diaphragm pump.

[0026] The transmission housing 2 has an embedded air pipe 9, with both ends of the air pipe 9 connected to two drive chambers 8 respectively. This air pipe 9 can balance the internal pressure of the two drive chambers 8 when the diaphragm 5 moves. The air pipe 9 is isolated from other parts inside the transmission housing 2. The parts can be lubricated with lubricating oil. The drain hole 11 is used to discharge water vapor and oil mist in the drive chamber 8. The drain hole 11 is closed during operation.

[0027] Furthermore, it should be noted that the specific embodiments described in this specification may differ in the shape and name of their components. The above description is merely illustrative of the structure of this utility model. All equivalent or simple variations made based on the structure, features, and principles described in this utility model are included within the protection scope of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not deviate from the structure of this utility model or exceed the scope defined by the claims, all of which should fall within the protection scope of this utility model.

Claims

1. A diaphragm pump, comprising a transmission housing (2), a reciprocating shaft (3), and a diaphragm (5), wherein a pump cover is installed at each end of the transmission housing (2), forming a pump chamber between the transmission housing (2) and the pump cover, the diaphragm (5) is located within the pump chamber, and the diaphragm (5) divides the pump chamber into a drive chamber (8) and a pump chamber, and the reciprocating shaft (3) is installed within the transmission housing (2), characterized in that: It also includes a floating rod (4), a drive shaft (6) and an eccentric wheel (7). A floating rod (4) is installed at each end of the reciprocating shaft (3). The diaphragm (5) is installed on the floating rod (4). The drive shaft (6) is installed inside the transmission housing (2). The eccentric wheel (7) is installed on the drive shaft (6) and is located inside the reciprocating shaft (3).

2. The diaphragm pump according to claim 1, characterized in that: One end of the drive shaft (6) is connected to the drive mechanism (1).

3. The diaphragm pump according to claim 1, characterized in that: At least one air pipe (9) is installed inside the transmission housing (2), and the two ends of the air pipe (9) are respectively connected to the two drive chambers (8).

4. The diaphragm pump according to claim 1, characterized in that: The transmission housing (2) is provided with an air inlet (10), which is connected to the drive chamber (8).

5. The diaphragm pump according to claim 1, characterized in that: The other end of the drive shaft (6) is used to install an air pump or a crank and is exposed outside the transmission housing (2).

6. The diaphragm pump according to claim 1, characterized in that: The transmission housing (2) is provided with a drain hole (11), which is connected to the drive chamber (8).

7. The diaphragm pump according to claim 1, characterized in that: The transmission housing (2) is equipped with a reciprocating shaft support seat (12), and the reciprocating shaft (3) is mounted on the reciprocating shaft support seat (12).

8. The diaphragm pump according to claim 1, characterized in that: A sealing ring support seat (13) is installed inside the transmission housing (2), and a sealing ring is installed on the sealing ring support seat (13). The sealing ring is fitted onto the reciprocating shaft (3).

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