Outward glue discharging-free device suitable for pressure plate pump

Abstract

The utility model discloses a glue discharging-free device suitable for a pressure plate pump, which relates to the field of pressure plate pumps and comprises a storage cavity which can be mounted on a pressure plate and is used for storing glue, a piston assembly which can be driven to move up and down in the storage cavity and an upper cover which is used for sealing the top of the storage cavity, the piston assembly comprises a piston and a piston rod which divide the storage cavity into an upper cavity and a lower cavity, the top of the piston rod penetrates through the upper cover, a channel used for being communicated with the pressing disc is formed in the position, located in the lower cavity, of the storage cavity, and glue in the storage cavity can be pushed back to the pressing disc when the piston is pushed downwards. The piston and the piston rod are provided with exhaust channels communicated with the lower cavity, and the piston rod and the upper cavity are both provided with a vacuumizing device and a compression device in a communicated mode. The glue discharging device can automatically collect glue discharged and separate the glue from air, the glue is injected back into the barrel to be used, waste caused by glue discharging is reduced, and pollution of chemical materials to the environment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure plate pumps, and particularly relates to a glue discharging device applicable to pressure plate pumps without discharging glue outward. Background Technique

[0002] The pressure plate pump changes the volume of the pump inner cavity through rotation or reciprocating motion, so as to complete the suction and discharge of liquid. This kind of pump usually includes a driving device and one or more pump bodies. The driving device provides power, and the pump body is responsible for transporting the liquid from the suction end to the discharge end. The pressure plate pump is mainly divided into two parts: the pump head and the lower pump body, and its working characteristics are mainly reflected in its pump body design and sealing performance. The pressure plate pump is widely used in lubrication and oil supply systems in industry, and has excellent sealing performance and is suitable for transporting various media, such as grease, lubricating grease and industrial glue, etc.

[0003] During the use process, when the volume inside the pump body increases, the external colloid is sucked into the pump under the action of atmospheric pressure. As the volume inside the pump body decreases, the sucked colloid is compressed, thereby increasing the pressure. The increased pressure causes the colloid to be discharged from the pump body, resulting in waste of the colloid and environmental pollution caused by the chemical materials in the colloid. Summary of the Invention

[0004] In view of this, the purpose of the utility model is to provide a glue discharging device applicable to pressure plate pumps without discharging glue outward, which can automatically collect the discharged glue and separate the glue from the air, and inject the glue back into the barrel for use, reducing the waste caused by glue discharging and reducing the environmental pollution caused by chemical materials.

[0005] The glue discharging device applicable to pressure plate pumps provided by the utility model adopts the following technical solutions:

[0006] A glue discharging device applicable to pressure plate pumps without discharging glue outward includes a storage cavity that can be installed on the pressure plate for storing glue, a piston assembly that can be driven to move up and down in the storage cavity, and an upper cover for closing the top of the storage cavity. The piston assembly includes a piston and a piston rod that divide the storage cavity into upper and lower cavities. The top of the piston rod passes through the upper cover. A channel for communicating with the pressure plate is arranged in the lower cavity of the storage cavity. When the piston is pushed downward, the glue in the storage cavity can be pushed back to the pressure plate. An exhaust channel communicating with the lower cavity is arranged on the piston and the piston rod, and a vacuum pumping device and a compression device are both communicated and arranged on the piston rod and the upper cavity.

[0007] Further, the vacuum pumping device includes a first vacuum solenoid valve communicated with the exhaust channel on the piston rod. When the pressure plate enters the glue barrel, the first vacuum solenoid valve is in the exhaust state, and the air in the glue barrel is discharged through the storage cavity and the exhaust channel. When the pressure plate contacts the glue surface in the glue barrel, the first vacuum solenoid valve is in the vacuum pumping state to pump out the air between the pressure plate and the glue barrel.

[0008] Further, the vacuum pumping device further includes a second vacuum solenoid valve communicated with the upper cavity of the storage cavity, and the second vacuum solenoid valve is used to extract the air in the upper cavity of the storage cavity.

[0009] Further, the compression device includes a first compressed air solenoid valve communicated with the upper cavity of the storage cavity. The first compressed air solenoid valve allows compressed gas to enter the upper cavity of the storage cavity to control the piston to move downward, so that the air in the lower cavity of the storage cavity is discharged through the exhaust passage, and the glue in the lower cavity of the storage cavity flows back down to the glue bucket.

[0010] Further, the compression device further includes a second compressed air solenoid valve communicated with the exhaust passage at the top of the piston rod. The second compressed air solenoid valve allows compressed gas to enter the lower cavity of the storage cavity to control the piston to move upward.

[0011] Further, a first quick-connect plug communicated with the exhaust passage is arranged at the top of the piston rod, and the first quick-connect plug is used to connect the air pipes of the first vacuum solenoid valve and the second compressed air solenoid valve.

[0012] Further, a second quick-connect plug is arranged at the top of the upper cavity of the storage cavity, and the second quick-connect plug is used to connect the first compressed air solenoid valve and the second vacuum solenoid valve.

[0013] Further, a piston seal ring contacting the inner wall of the storage cavity is arranged on the circumferential side of the piston.

[0014] Further, a sealing ring contacting the piston rod is arranged on the inner wall of the upper cover.

[0015] In summary, the present utility model includes at least one of the following beneficial effects: it can automatically collect the discharged glue and separate the glue from the air, inject the glue back into the bucket for use, reduce the waste caused by glue discharging, reduce the environmental pollution caused by chemical materials, and at the same time eliminate the manual glue connection and other links for workers, reduce the labor intensity of workers, and can be applicable to various types of chucks. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of an embodiment of the present utility model;

[0017] Figure 2 It is a schematic structural diagram of the embodiment of the present utility model installed on a chuck.

[0018] Description of the Reference Numerals:

[0019] 1. Storage cavity; 11. Channel; 12. Gasket; 2. Piston assembly; 21. Piston; 22. Piston rod; 23. Exhaust channel; 24. Piston seal ring; 3. First vacuum solenoid valve; 4. Second vacuum solenoid valve; 5. First compressed air solenoid valve; 6. Second compressed air solenoid valve; 7. First quick connector; 8. Second quick connector; 9. Upper cover; 91. Sealing ring. Detailed implementation manners

[0020] The following uses specific specific examples to illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. The present utility model can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present utility model.

[0021] The following combines the attached Figure 1-2 to further elaborate on the present utility model in detail.

[0022] An embodiment of the present utility model discloses a glue discharging device applicable to a pressure plate pump that does not discharge glue outward. Refer to Figure 1 - Figure 2 , the glue discharging device applicable to the pressure plate pump that does not discharge glue outward includes a storage cavity 1 that can be installed on the pressure plate for storing glue, a piston assembly 2 that can be driven to move up and down in the storage cavity 1, and an upper cover 9 for closing the top of the storage cavity 1. The piston assembly 2 includes a piston 21 that divides the storage cavity 1 into upper and lower cavities and a piston rod 22. The top of the piston rod 22 passes through the upper cover 9. The storage cavity 1 is provided with a channel 11 for communicating with the pressure plate in the lower cavity. When the piston 21 is pushed downward, the glue in the storage cavity 1 can be pushed back to the pressure plate. An exhaust channel 23 communicating with the lower cavity is provided on the piston 21 and the piston rod 22. A vacuum pumping device and a compression device are both communicated on the piston rod 22 and the upper cavity. The vacuum pumping device can extract the air between the pressure plate and the glue bucket, and can also extract the air in the upper cavity of the storage cavity 1. The compression device can move the piston 21 up and down in the storage cavity 1. When moving downward, the air in the lower cavity can be discharged through the exhaust channel 23, and the glue can flow downward back into the pressure plate. The vacuum pumping device and the compression device can be controlled by PLC electric control or can be manually controlled by solenoid valves. It can automatically collect the discharged glue and separate the glue from the air, and inject the glue back into the bucket for use, reducing the waste caused by glue discharging and reducing the environmental pollution caused by chemical materials.

[0023] In this embodiment, the vacuum pumping device includes a first vacuum solenoid valve 3 communicating with the exhaust passage 23 on the piston rod 22. When the pressing plate enters the glue bucket, the first vacuum solenoid valve 3 is in the exhaust state. When the pressing plate is pressed into the paint bucket, the air in the paint bucket enters from the bottom of the pressing plate. The air in the glue bucket is discharged through the storage cavity 1 and the exhaust passage 23. When the pressing plate contacts the glue surface in the glue bucket, the first vacuum solenoid valve 3 is in the vacuum pumping state to pump out the air between the pressing plate and the glue bucket.

[0024] In this embodiment, the vacuum pumping device further includes a second vacuum solenoid valve 4 communicating with the upper cavity of the storage cavity 1. The second vacuum solenoid valve 4 is used to pump out the air in the upper cavity of the storage cavity 1, so that the piston 21 can move upward in the storage cavity 1, and the glue in the glue bucket can enter the pressing plate.

[0025] In this embodiment, the compression device includes a first compressed air solenoid valve 5 communicating with the upper cavity of the storage cavity 1. When discharging the air in the pressing plate and the glue bucket, the first compressed air solenoid valve 5 is in the middle position. The first compressed air solenoid valve 5 allows compressed gas to enter the upper cavity of the storage cavity 1 to control the piston 21 to move downward, so that the air in the lower cavity of the storage cavity 1 is discharged through the exhaust passage 23, and the glue in the lower cavity of the storage cavity 1 flows back downward into the glue bucket.

[0026] In this embodiment, the compression device further includes a second compressed air solenoid valve 6 communicating with the exhaust passage 23 at the top of the piston rod 22. The second compressed air solenoid valve 6 allows compressed gas to enter the lower cavity of the storage cavity 1 to control the piston 21 to move upward, and a cavity is formed in the lower cavity of the storage cavity 1. Among them, the compressed air solenoid valves all adopt three-position five-way valves, and the vacuum solenoid valves adopt two-position three-way valves, which are connected to an external vacuum pumping device and a compressor.

[0027] When it is necessary to separate the pressing plate from the glue bucket, the upper cavity of the storage cavity 1 maintains the intake pressure, and at the same time, the lower cavity of the storage cavity 1 intakes air. The passage 11 is dredged by the compressed air pressure, and the compressed air enters the lower end of the pressing plate to assist the pressing plate to separate from the bucket, and at the same time prepares for the next exhaust of the pressing plate.

[0028] In this embodiment, a first quick-connect plug 7 communicating with the exhaust passage 23 is provided at the top of the piston rod 22. The first quick-connect plug 7 is used to connect the air pipes of the first vacuum solenoid valve 3 and the second compressed air solenoid valve 6.

[0029] In this embodiment, a second quick-connect plug 8 is provided at the top of the upper cavity of the storage cavity 1. The second quick-connect plug 8 is used to connect the first compressed air solenoid valve 5 and the second vacuum solenoid valve 4.

[0030] In this embodiment, the aperture diameter of the exhaust passage 23 is smaller than the minimum aperture diameter through which the glue can enter. The aperture diameter of the exhaust passage 23 can allow sufficient air to pass through and also prevent the glue from passing through freely, thereby preventing the glue from entering the exhaust passage 23.

[0031] In this embodiment, a sealing gasket 12 is provided on the periphery of the storage cavity 1 at the opening of the passage 11.

[0032] In this embodiment, a piston sealing ring 24 that contacts the inner wall of the storage cavity 1 is provided on the periphery of the piston 21.

[0033] In this embodiment, a sealing ring 91 that contacts the piston rod 22 is provided on the inner wall of the upper cover 9.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A device applicable to a pressure plate pump for avoiding external glue discharge, characterized in that: It includes a storage cavity (1) that can be installed on a pressure plate for storing glue, a piston assembly (2) that can be driven to move up and down in the storage cavity (1), and an upper cover (9) for closing the top of the storage cavity (1). The piston assembly (2) includes a piston (21) that divides the storage cavity (1) into upper and lower cavities and a piston rod (22). The top of the piston rod (22) passes through the upper cover (9). A channel (11) for communicating with the pressure plate is provided in the lower cavity of the storage cavity (1). When the piston (21) is pushed downward, the glue in the storage cavity (1) can be pushed back to the pressure plate. An exhaust channel (23) communicating with the lower cavity is provided on the piston (21) and the piston rod (22). A vacuum pumping device and a compression device are both communicated and provided on the piston rod (22) and the upper cavity.

2. The non-outward glue discharging device applicable to a pressure plate pump according to claim 1, wherein: The vacuum pumping device includes a first vacuum solenoid valve (3) communicated with the exhaust channel (23) on the piston rod (22). When the pressure plate enters the glue bucket, the first vacuum solenoid valve (3) is in an exhaust state, and the air in the glue bucket is discharged through the storage cavity (1) and the exhaust channel (23). When the pressure plate contacts the glue surface in the glue bucket, the first vacuum solenoid valve (3) is in a vacuum pumping state to pump out the air between the pressure plate and the glue bucket.

3. The non-outward-gel-discharging device applicable to a pressure plate pump according to claim 2, wherein: The vacuum pumping device further includes a second vacuum solenoid valve (4) communicated with the upper cavity of the storage cavity (1). The second vacuum solenoid valve (4) is used to pump out the air in the upper cavity of the storage cavity (1).

4. The device for preventing outward glue discharge applicable to a pressure plate pump according to claim 1, characterized in that: The compression device includes a first compressed air solenoid valve (5) communicated with the upper cavity of the storage cavity (1). The first compressed air solenoid valve (5) allows compressed gas to enter the upper cavity of the storage cavity (1) to control the piston (21) to move downward, so that the air in the lower cavity of the storage cavity (1) is discharged through the exhaust channel (23), and the glue in the lower cavity of the storage cavity (1) flows back downward into the glue bucket.

5. The glue-free discharging device applicable to a pressure plate pump according to claim 4, wherein: The compression device further includes a second compressed air solenoid valve (6) communicated with the exhaust channel (23) at the top of the piston rod (22). The second compressed air solenoid valve (6) allows compressed gas to enter the lower cavity of the storage cavity (1) to control the piston (21) to move upward.

6. The glue discharging device applicable to the pressure plate pump without external glue discharging according to any one of claims 1-5, characterized in that: A first quick connector (7) communicated with the exhaust channel (23) is provided at the top of the piston rod (22). The first quick connector (7) is used to connect the air pipes of the first vacuum solenoid valve (3) and the second compressed air solenoid valve (6).

7. The non-external glue discharging device applicable to a pressure plate pump according to any one of claims 1-5, characterized in that: A second quick connector (8) is provided at the top of the upper cavity of the storage cavity (1). The second quick connector (8) is used to connect the first compressed air solenoid valve (5) and the second vacuum solenoid valve (4).

8. The device for preventing external glue discharge applicable to a pressure plate pump according to claim 1, characterized in that: A piston seal ring (24) in contact with the inner wall of the storage cavity (1) is provided on the circumferential side of the piston (21).

9. The non-outward glue discharging device applicable to a pressure plate pump according to claim 1, wherein: A sealing ring (91) in contact with the piston rod (22) is provided on the inner wall of the upper cover (9).

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