Diaphragm pump easy to disassemble and clean

Abstract

A diaphragm pump easy to disassemble and clean comprises a driving mechanism capable of reciprocating in the axial direction of the driving mechanism, pump bodies are arranged at the two ends of the driving mechanism in the axial direction, and a diaphragm which shrinks or expands along with the axial movement of the driving mechanism is arranged in each pump body. The other side, relative to the axial direction of the driving mechanism, of the diaphragm in each pump body is provided with a pump cavity allowing viscous fluid to pass through, and the discharging end and the feeding end of each pump cavity are detachably connected with a discharging hose and a feeding hose respectively. The water pump further comprises a shell surrounding the driving mechanism, and the pump body is detachably fixed to the shell. The utility model has the beneficial effects that by adopting a detachable connection mode, the feeding end and the discharging end of the pump cavity are easy to detach, and the cleaning and the maintenance are convenient.

Description

Technical Field

[0001] The utility model relates to a diaphragm pump, in particular to a diaphragm pump which is easy to disassemble and clean. Background Art

[0002] The diaphragm pump is a positive displacement pump with a diaphragm as the driving element. It is mainly composed of a pump body, a diaphragm, a valve and a driving mechanism. Its working principle is to achieve liquid suction and discharge by periodically changing the volume in the pump chamber through the movement of the diaphragm. Diaphragm pumps are widely used in the fields of chemical industry, medicine, food, environmental protection, etc., and are particularly suitable for conveying corrosive, viscous, and particle-containing liquids. Due to its good sealing performance, simple structure, and easy maintenance, diaphragm pumps play an important role in industrial production.

[0003] The existing diaphragm pump has a design flaw when placed vertically: the discharge end uses a small steel ball to open and close based on gravity. When the drive mechanism moves toward that side, the small steel ball is blown by air pressure to open the discharge end. When this design is used to transport sticky materials such as glue, the small steel ball is very likely to become sticky due to the viscosity of the material, causing the gravity opening and closing mechanism to fail. This not only affects the normal operation of the diaphragm pump, but may also cause interruptions in material transportation and reduce production efficiency. Therefore, this design defect limits the application of diaphragm pumps in the field of transporting viscous materials and needs to be optimized and resolved through technological innovation. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a diaphragm pump which is easy to disassemble and clean.

[0005] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows: a diaphragm pump which is easy to disassemble and clean, comprising a driving mechanism which can reciprocate along its axial direction, pump bodies are arranged at both ends of the axial direction of the driving mechanism, each pump body is arranged with a diaphragm which contracts or expands following the axial movement of the driving mechanism, the other side of the diaphragm in each pump body relative to the axial direction of the driving mechanism is a pump chamber for the passage of viscous fluid, the two ends of each pump chamber are respectively a feed end and a discharge end, the discharge end and the feed end of the pump chamber are respectively detachably connected with a discharge hose and a feed hose; it also includes a shell arranged to surround the driving mechanism, and the pump body is detachably fixed to the shell.

[0006] The beneficial effects of the utility model are as follows: by adopting a detachable connection method, the feed end and the discharge end of the pump chamber are easy to disassemble, which is convenient for cleaning and maintenance. Once the interface between the feed hose and the discharge hose and the pump chamber is blocked, the hose can be directly disassembled and replaced due to its low cost. In addition, the pump body is fixed to the housing in a detachable manner, which further simplifies the disassembly and cleaning process and improves maintenance efficiency. This design effectively solves the problem that the existing diaphragm pump is prone to blockage at its interface due to gravity-based opening and closing, and the existing diaphragm pump is more complicated to disassemble, so it is difficult to disassemble and clean after internal blockage, thereby extending the service life of the pump in this application and reducing maintenance costs.

[0007] Furthermore, the two feed hoses are connected to the same feed port, and the two discharge hoses are connected to the same discharge port. Each feed hose and each discharge hose is provided with a pipe pressing mechanism for closing or opening the internal flow channel of the hose connected thereto. When the driving mechanism moves toward one side, the pipe pressing mechanism on the feed hose connected to the pump body on that side cuts off the fluid flow channel in the feed hose, and the pipe pressing mechanism on the discharge hose connected to the pump body on that side opens the fluid flow channel in the discharge hose.

[0008] By setting up a pipe pressing mechanism, precise control of feeding and discharging is achieved, fluid backflow and mixing are avoided, and the working efficiency and quality of the pump are improved. When the driving mechanism moves, the feeding and discharging channels are automatically switched, which simplifies the operation process and reduces manual intervention. In addition, the design of the pipe pressing mechanism effectively prevents the accumulation and blockage of materials in the pump cavity, further improving the reliability and service life of the pump. In addition, the same discharge port and feed port can reduce the manufacturing cost of the diaphragm pump in the above scheme, and the material backflow will not occur when the pipe pressing mechanism is used.

[0009] Furthermore, it also includes two air-controlled valves respectively used to control the pipe-pressing mechanisms on the feed hose and the discharge hose on the same side; the two pipe-pressing mechanisms controlled by the same air-controlled valve are in an open state and a closed state at the same time; the driving mechanism forms a compression space between the diaphragms on both sides when it is stationary to control the expansion of the diaphragms; and a control hole connected to the air-controlled valve is provided on each compression space.

[0010] The pipe-pressing mechanism with pneumatic transmission structure uses the compressed space between the driving mechanism and the diaphragm as the control air source, and realizes automatic control of the pipe-pressing mechanism by connecting the air-controlled valves of the two pipe-pressing mechanisms on the same side, which simplifies the control system and reduces the complexity of operation. The pneumatic transmission structure has a fast response speed and reliable operation, which effectively improves the working efficiency and stability of the pump. In addition, this design reduces external control components, reduces maintenance costs, and further improves the overall performance of the pump.

[0011] Furthermore, the tube pressing mechanism includes a control channel and a clamping block located at the front end of the control channel, and output holes connected to the air-controlled valve are respectively provided at both ends of the control channel. The air-controlled valve controls the extension and retraction of the clamping block through the two output holes, and the same output end of the air-controlled valve is respectively connected to the output hole for controlling the extension and the output hole for controlling the retraction on the two tube pressing mechanisms.

[0012] By controlling the output holes of the air control valve at both ends of the channel, the clamping block is driven to extend or retract, achieving accurate closure and opening of the hose and ensuring smooth flow of the fluid. The design of the clamping block effectively prevents the accumulation and blockage of materials in the hose, improving the reliability and service life of the pump. In addition, this structure is simple and easy to maintain, reducing maintenance costs and further improving the overall performance of the pump.

[0013] Furthermore, the feed hose and the discharge hose are connected to other components by means of quick-insert connectors; a plurality of fixing holes are circumferentially arranged on the outer surface of the pump body, and the pump body is detachably fixed to the shell by inserting fasteners into the fixing holes.

[0014] The feed hose and the discharge hose are connected by a quick-connect connector, which simplifies the connection process and improves the efficiency of installation and removal. The design of the quick-connect connector ensures the reliability and sealing of the connection and avoids fluid leakage. In addition, the pump body is detachably fixed to the housing through fixing holes and fasteners, which further simplifies the disassembly and cleaning process and improves maintenance efficiency. This design effectively solves the problem that the existing diaphragm pump is difficult to disassemble and clean after internal blockage due to one-piece molding, prolongs the service life of the pump and reduces maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an axonometric diagram of an embodiment of the utility model;

[0016] Figure 2 A cross-sectional view of the driving mechanism of an embodiment of the utility model;

[0017] Figure 3 It is a cross-sectional view of the pipe pressing mechanism of the embodiment of the utility model;

[0018] Figure 4 This is an axonometric view of the pipe pressing mechanism of the embodiment of the utility model;

[0019] Figure 5 This is a flow chart of gas source control according to an embodiment of the utility model. DETAILED DESCRIPTION

[0020] The utility model embodiment is a diaphragm pump that is easy to disassemble and clean. Figure 1-5As shown: it includes a driving mechanism 1, two pump bodies 2, a diaphragm 21, a pump chamber 22, a feed hose 3, a discharge hose 4, a housing 5, a pipe pressing mechanism 6 and a quick connector 7. The driving mechanism 1 can reciprocate along its axial direction, and pump bodies 2 are provided at both ends of its axial direction. A diaphragm 21 is provided in each pump body 2, and the diaphragm 21 contracts following the axial movement of the driving mechanism 1. The diaphragm 21 in each pump body 2 is on the other side of the axial direction of the driving mechanism 1 to provide a pump chamber 22 for the viscous fluid to pass through, and the two ends of the pump chamber 22 are a feed port 9 and a discharge port 8, respectively.

[0021] The feed hose 3 and the discharge hose 4 are detachably connected to the feed port 9 and the discharge port 8 of the pump chamber 22 through the quick connector 7. The housing 5 is arranged to surround the drive mechanism 1, and the pump body 2 is detachably fixed to the housing 5 through a plurality of fixing holes 23 and fasteners (not shown in the figure) arranged circumferentially on its outer surface. A pipe pressing mechanism 6 is arranged on each feed hose 3 and discharge hose 4 to close the hose connected thereto to prevent the fluid from passing through.

[0022] The tube pressing mechanism 6 is a pneumatic transmission structure, including a control channel 62, a clamping block 63 located at the front end of the control channel 62, and output holes 61 located on both sides of the control channel 62 to respectively control the expansion and contraction of the clamping block 63. A portion of the clamping block 63 is located in the middle of the control channel 62 so that when the gas source is input into the output holes 61 located at the upper and lower sides of the control channel 62, the clamping block 63 located in the middle of the control channel 62 is pushed to move and thus drive the clamping block 63 to expand and contract. When the driving mechanism 1 is stationary, a compression space 11 is formed between the driving mechanism 1 and the diaphragms 21 on both sides. The compression space 11 on each side is connected to an air control valve 12 for controlling the two tube pressing mechanisms 6 on the same side through a control hole 111 located in the compression space 11 on that side. How the air control valve 12 realizes the conversion of the gas source output through the gas pressure in the control hole 111 belongs to the prior art and will not be elaborated in detail here.

[0023] The feed hose 3 and the discharge hose 4 are connected to the feed port 9 and the discharge port 8 of the pump chamber 22 through the quick-connect connector 7 to achieve quick installation and removal. The pump body 2 is connected to the housing 5 through the fixing hole 23 and the fastener (not shown in the figure) to form a stable overall structure. The pipe pressing mechanism 6 is connected to the compression space 11 between the driving mechanism 1 and the diaphragm 21 through the pneumatic control hole 111 to achieve automatic control.

[0024] The use process of this embodiment is as follows: when the air source is input into the compression space 11 on one side and the expansion of the diaphragm 21 on this side is controlled, since the driving mechanism 1 is fixed to the diaphragms 21 on both sides, the expanded diaphragm 21 will drive the driving mechanism 1 to move toward one side, and then the driving mechanism 1 drives the diaphragm on the other side to contract, thereby realizing the suction of liquid in the pump chamber 22 on one side and the discharge of liquid in the pump chamber 22 on the other side at the same time (the working principle of this part is the same as the diaphragm pump in the prior art). At the same time, when the input gas source inputs the gas source into the compression space 11 on one side, the gas control valve 12 is controlled through the control hole 111 to switch the line of its output gas source, so that the pressing tube mechanism 6 on the feed hose 3 of the pump body 2 on this side gets air through the output hole 61 for controlling the extension of the pressing block 63 to control the extension of the pressing block 63, thereby cutting off the fluid flow channel in the feed hose 3; at the same time, the pressing tube mechanism 6 on the discharge hose 4 of the pump body 2 on this side gets air through the output hole 61 for controlling the retraction of the pressing block 63 to control the retreat of the pressing block 63, thereby opening the fluid flow channel in the discharge hose 4, thereby achieving precise fluid control. This cycle is repeated to pump the material.

[0025] In addition, through the detachable connection mode of the quick-connect connector 7, the feed hose 3 and the discharge hose 4 can be directly disassembled and replaced due to their low purchase cost, thus avoiding the accumulation and blockage of materials in the pipe. The pump body 2 is detachably fixed to the housing 5 through the fixing hole 23 and the fastener (not shown in the figure), further simplifying the disassembly and cleaning process and improving the maintenance efficiency. The overall design effectively solves the problem that the existing diaphragm pump is difficult to disassemble and clean after internal blockage due to the one-piece molding, prolongs the service life of the pump and reduces the maintenance cost.

[0026] The above embodiment is only one of the preferred specific embodiments of the present invention. Common changes and substitutions made by those skilled in the art within the technical solution of the present invention are all included in the protection scope of the present invention.

Claims

1. A diaphragm pump that is easy to disassemble and clean, comprising a driving mechanism that can reciprocate along its axial direction, wherein pump bodies are arranged at both ends of the axial direction of the driving mechanism, and each pump body is provided with a diaphragm that contracts or expands following the axial movement of the driving mechanism, and the other side of the diaphragm in each pump body relative to the axial direction of the driving mechanism is a pump cavity for viscous fluid to pass through, and the two ends of each pump cavity are respectively a feed end and a discharge end, and the characteristics are: The discharge end and the feed end of the pump chamber are detachably connected with a discharge hose and a feed hose respectively; the pump chamber also includes a shell arranged to surround the driving mechanism, and the pump body is detachably fixed on the shell.

2. The diaphragm pump that is easily disassembled and cleaned according to claim 1, characterized in that: The two feed hoses are connected to the same feed port, and the two discharge hoses are connected to the same discharge port. Each feed hose and each discharge hose is provided with a pipe pressing mechanism for closing or opening the internal flow channel of the hose connected thereto. When the driving mechanism moves toward one side, the pipe pressing mechanism on the feed hose connected to the pump body on that side cuts off the fluid flow channel in the feed hose, and the pipe pressing mechanism on the discharge hose connected to the pump body on that side opens the fluid flow channel in the discharge hose.

3. The diaphragm pump that is easily disassembled and cleaned according to claim 2, characterized in that: It also includes two air-controlled valves respectively used to control the pipe-pressing mechanisms on the feed hose and the discharge hose on the same side; the two pipe-pressing mechanisms controlled by the same air-controlled valve are in an open state and a closed state at the same time; the driving mechanism forms a compression space between the diaphragms on both sides when it is stationary to control the expansion of the diaphragms; and a control hole connected to the air-controlled valve is provided on each compression space.

4. The diaphragm pump that is easily disassembled and cleaned according to claim 3, characterized in that: The tube pressing mechanism includes a control channel and a clamping block located at the front end of the control channel. Output holes connected to the air-controlled valve are respectively provided at both ends of the control channel. The air-controlled valve controls the extension and retraction of the clamping block through the two output holes. The same output end of the air-controlled valve is respectively connected to the output hole for controlling the extension and the output hole for controlling the retraction on the two tube pressing mechanisms.

5. The diaphragm pump that is easily disassembled and cleaned according to claim 1, characterized in that: The feed hose and the discharge hose are both connected to other components by means of quick-insert connectors; a plurality of fixing holes are circumferentially arranged on the outer surface of the pump body, and the pump body is detachably fixed to the shell by means of fasteners inserted into the fixing holes.

Images