A manual liquid replenishment pump

Abstract

The utility model discloses a kind of manual liquid supplementing pumps, it is related to liquid supplementing pump technical field, including pump body, the inner wall of pump body is equipped with piston cavity and valve cavity, the inner wall sliding connection of piston cavity has piston rod, the inner wall sliding connection of piston rod has piston guide rod, the surface of piston guide rod is provided with buffer assembly, one-way valve is threadedly connected in the valve cavity, the number of one-way valve is two, two described one-way valve are located at the top of pump body and the right end of pump body respectively, the surface of pump body is provided with the cleaning assembly of preventing impurity from entering pump body interior, the utility model can effectively prevent external impurities from entering inside, avoid that impurity causes abrasion to liquid supplementing pump inside, can effectively buffer inside, avoid in frequent start-stop process, cause internal structure damage, in addition, the liquid outlet direction can be freely adjusted, provide more selection for installation position, so that liquid supplementing pump is more flexible to use.

Description

Technical Field

[0001] This utility model relates to the field of fluid replenishment pump technology, specifically to a manual fluid replenishment pump. Background Technology

[0002] In mechanical seal auxiliary systems, the replenishing pump is one of the key devices for maintaining normal system operation. It is mainly used to replenish the mechanical seal system with fluid to ensure stable pressure and fluid level within the sealing cavity, thereby preventing leakage and extending the service life of the sealing elements. The replenishing pump typically works by using the reciprocating motion of a piston to transport fluid from a low-pressure area to a high-pressure area, while a check valve controls the flow direction of the fluid, ensuring the unidirectional and stable replenishment process. With the continuous development of mechanical seal technology, the performance requirements for replenishing pumps are becoming increasingly stringent, including higher reliability, lower maintenance costs, and better adaptability.

[0003] However, existing manual replenishment pumps still have some problems in practical use. First, the one-way valve of the replenishment pump is prone to damage during frequent start-stop operations, and once damaged, the replacement process is relatively complicated, affecting the normal operation of the equipment. Second, the working medium of the replenishment pump often contains particulate impurities, which can easily enter the piston sealing surface, causing wear on the seals, thereby reducing sealing performance and even causing leakage. In addition, the discharge direction of traditional replenishment pumps is fixed and cannot be adjusted according to the needs of the installation location, limiting their applicability in different application scenarios. Finally, the piston rod lacks an effective buffer mechanism during frequent reciprocating motion, making it prone to damage due to rigid impacts, further reducing the service life and reliability of the replenishment pump.

[0004] Therefore, a manual replenishment pump is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a manual replenishment pump in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0007] A manual fluid replenishment pump includes a pump body and a pull rod assembly. The pump body has a piston chamber and a valve chamber on its inner wall. A piston rod is slidably connected to the inner wall of the piston chamber, and a piston guide rod is slidably connected to the inner wall of the piston rod. A buffer assembly is provided on the surface of the piston guide rod. Two check valves are threaded into the valve chamber. The two check valves are located at the top and right end of the pump body, respectively. A cleaning assembly is provided on the surface of the pump body to prevent impurities from entering the pump body.

[0008] Furthermore, the pull rod assembly includes a fixed base, which is fixedly connected to the left end of the pump body. A pull block is rotatably connected to the inner wall of the fixed base, and an operating lever is fixedly connected to the top surface of the pull block. A rotating block is rotatably connected to the inner wall of the pull block, and the rotating block is rotatably connected to the piston guide rod.

[0009] Furthermore, the buffer assembly includes a piston spring, one end of which is fixedly connected to the left side of the inner wall of the piston rod, and the other end of which is fixedly connected to the right side of the inner wall of the piston cavity. A buffer pad is fixedly connected to the left end of the piston guide rod.

[0010] Furthermore, the cleaning assembly includes an outer cleaning washer that fits against the left side of the pump body, and the inner wall of the outer cleaning washer is slidably connected to the piston rod. The surface of the outer cleaning washer is threaded with a screw, and a pressure ring is pressed onto the left side of the outer cleaning washer. The surface of the pressure ring is threaded with a screw, and the screw is threadedly connected to the pump body. An O-ring and an inner cleaning washer are fitted onto the surface of the piston rod, and both the O-ring and the piston spring are slidably connected to the inner wall of the piston chamber.

[0011] Furthermore, the cleaning assembly also includes a first plug and a second plug, with the first plug located at the bottom of the piston chamber and the second plug threadedly connected to the bottom of the valve chamber. Both the first plug and the second plug are made of stainless steel.

[0012] Furthermore, the cushioning pad is made of polyurethane, and the outer cleaning gasket is made of PTFE.

[0013] The beneficial effects of this utility model are as follows:

[0014] By manually pulling the lever assembly, the piston rod and piston guide rod can be pushed to slide along the inside of the piston chamber, thereby controlling the overall operation of the replenishing pump. By setting a buffer assembly, the piston rod and piston guide rod are buffered to avoid rigid collisions. By setting a cleaning assembly, foreign objects from the atmospheric side and the working medium side can be prevented from entering the piston rod sealing surface, ensuring sealing reliability. This utility model can effectively prevent external impurities from entering the interior, avoiding wear caused by impurities on the inside of the replenishing pump. It can effectively buffer the interior to avoid damage to the internal structure during frequent start-stop processes. In addition, the liquid outlet direction can be freely adjusted, providing more choices for the installation position and making the replenishing pump more flexible in use. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a side view of the structure of this utility model;

[0017] Figure 3 This is a utility model Figure 2 Sectional view of AA;

[0018] Reference numerals: 1. Pump body; 2. Piston guide rod; 3. Pull rod assembly; 301. Fixed seat; 302. Control lever; 303. Rotating block; 304. Pull block; 4. Piston rod; 5. O-ring; 6. Inner cleaning washer; 7. Piston spring; 8. One-way valve; 9. Buffer pad; 10. First plug; 11. Second plug; 12. Outer cleaning washer; 13. Pressure ring; 14. Screw. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0022] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element 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 utility model.

[0023] like Figures 1 to 3As shown, a manual fluid replenishment pump includes a pump body 1 and a lever assembly 3. The pump body 1 has a piston chamber and a valve chamber on its inner wall. A piston rod 4 is slidably connected to the inner wall of the piston chamber, and a piston guide rod 2 is slidably connected to the inner wall of the piston rod 4. The lever assembly 3 includes a fixed seat 301, which is fixedly connected to the left end of the pump body 1. A pull block 304 is rotatably connected to the inner wall of the fixed seat 301. A control lever 302 is fixedly connected to the top surface of the pull block 304. A rotating block 303 is rotatably connected to the inner wall of the pull block 304, and the rotating block 303 is rotatably connected to the piston guide rod 2. It should be noted that rotating the control lever 302 causes the pull block 304 to rotate around the fixed seat 301, which in turn moves the rotating block 303. The rotating block 303 pushes the piston rod 4 to slide, thus controlling the operation of the fluid replenishment pump. Releasing the control lever 302 allows the rotating block 303 and the pull block 304 to reset under the elastic force of the piston spring 7.

[0024] A buffer assembly is provided on the surface of the piston guide rod 2. The buffer assembly includes a piston spring 7, one end of which is fixedly connected to the left side of the inner wall of the piston rod 4, and the other end of which is fixedly connected to the right side of the inner wall of the piston chamber. A buffer pad 9 is fixedly connected to the left end of the piston guide rod 2. More specifically, when the pull rod assembly 3 pushes the piston rod 4 to move, it will cause the piston spring 7 to undergo elastic deformation, thereby playing a buffering role. When the left side of the inner wall of the piston rod 4 finally contacts the buffer pad 9, the buffer pad 9 will undergo elastic deformation, further playing a buffering role.

[0025] Two check valves 8 are threadedly connected to the valve chamber. The two check valves 8 are located at the top and right end of the pump body 1, respectively. The surface of the pump body 1 is provided with a cleaning assembly to prevent impurities from entering the pump body 1. The cleaning assembly includes an outer cleaning washer 12, which fits against the left side of the pump body 1. The inner wall of the outer cleaning washer 12 is slidably connected to the piston rod 4. A screw 14 is threadedly connected to the surface of the outer cleaning washer 12. A pressure ring 13 is pressed onto the left side of the outer cleaning washer 12. The surface of the pressure ring 13 is threadedly connected to the screw 14, which is threadedly connected to the pump body 1. An O-ring 5 and an inner cleaning washer 6 are fitted onto the surface of the piston rod 4. Both the O-ring 5 and the piston spring 7 are slidably connected to the inner wall of the piston chamber. It should be noted that by setting an external cleaning gasket 12 at the left end of the pump body 1 and setting an internal cleaning gasket 6 and an O-ring 5 on the surface of the piston rod 4, foreign objects from the atmospheric side and the working medium side can be effectively prevented from entering the sealing surface of the piston rod 4, ensuring sealing reliability. Furthermore, by fitting the O-ring 5 and the internal cleaning gasket 6 onto the outer surface of the piston rod 4, the processing difficulty of the sealing structure can be reduced.

[0026] The cleaning assembly also includes a first plug 10 and a second plug 11, with the first plug 10 located at the bottom of the piston chamber and the second plug 11 threadedly connected to the bottom of the valve chamber. Both the first plug 10 and the second plug 11 are made of stainless steel. More specifically, by disassembling the first plug 10 and the second plug 11, dirt inside the piston chamber and the valve chamber can be discharged, thereby achieving rapid cleaning of the piston chamber and the valve chamber. In some embodiments, the right-side one-way valve 8 and the second plug 11 can be installed in interchangeable positions, making the side-outlet replenishing pump a bottom-outlet replenishing pump.

[0027] The buffer pad 9 is made of polyurethane, and the outer cleaning gasket 12 is made of PTFE. More specifically, the polyurethane material has high wear resistance, which can maintain a good cushioning effect for a long time and reduce damage caused by friction and impact. In addition, the polyurethane material has strong corrosion resistance and is not easily corroded. The PTFE material has good sealing performance, which can effectively prevent liquid or gas leakage, and has high wear resistance, which can maintain close contact with the piston rod 4 for a long time, thus achieving a good anti-impurity effect.

[0028] In summary: By manually pulling the lever assembly 3, the piston rod 4 and piston guide rod 2 can be pushed to slide along the inside of the piston chamber, thereby controlling the overall operation of the replenishing pump. By setting a buffer assembly, the piston rod 4 and piston guide rod 2 are buffered to avoid rigid collisions. By setting a cleaning assembly, foreign objects from the atmospheric side and the working medium side can be prevented from entering the sealing surface of the piston rod 4, ensuring sealing reliability. This utility model can effectively prevent external impurities from entering the interior, avoiding wear caused by impurities on the inside of the replenishing pump. It can effectively buffer the interior to avoid damage to the internal structure during frequent start-stop processes. In addition, the liquid outlet direction can be freely adjusted, providing more choices for the installation position and making the replenishing pump more flexible in use.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A manual replenishment pump, characterized in that, The pump body (1) includes a pump body (1) and a pull rod assembly (3). The inner wall of the pump body (1) is provided with a piston chamber and a valve chamber. The inner wall of the piston chamber is slidably connected to a piston rod (4). The inner wall of the piston rod (4) is slidably connected to a piston guide rod (2). The surface of the piston guide rod (2) is provided with a buffer assembly. The valve chamber is threadedly connected with a one-way valve (8). There are two one-way valves (8). The two one-way valves (8) are located at the top of the pump body (1) and the right end of the pump body (1) respectively. The surface of the pump body (1) is provided with a cleaning assembly to prevent impurities from entering the interior of the pump body (1).

2. A manual replenishment pump according to claim 1, characterized in that, The pull rod assembly (3) includes a fixed seat (301), and the fixed seat (301) is fixedly connected to the left end of the pump body (1). The inner wall of the fixed seat (301) is rotatably connected to a pull block (304), the top surface of the pull block (304) is fixedly connected to an operating lever (302), the inner wall of the pull block (304) is rotatably connected to a rotating block (303), and the rotating block (303) is rotatably connected to the piston guide rod (2).

3. A manual replenishment pump according to claim 1, characterized in that, The buffer assembly includes a piston spring (7), one end of which is fixedly connected to the left side of the inner wall of the piston rod (4), and the other end of which is fixedly connected to the right side of the inner wall of the piston cavity. A buffer pad (9) is fixedly connected to the left end of the piston guide rod (2).

4. A manual replenishment pump according to claim 3, characterized in that, The cleaning assembly includes an outer cleaning washer (12), which is fitted to the left side of the pump body (1). The inner wall of the outer cleaning washer (12) is slidably connected to the piston rod (4). The surface of the outer cleaning washer (12) is threaded with a screw (14). A pressure ring (13) is pressed onto the left side of the outer cleaning washer (12). The surface of the pressure ring (13) is threaded with a screw (14), and the screw (14) is threadedly connected to the pump body (1). An O-ring (5) and an inner cleaning washer (6) are fitted onto the surface of the piston rod (4). The O-ring (5) and the piston spring (7) are both slidably connected to the inner wall of the piston chamber.

5. A manual replenishment pump according to claim 3, characterized in that, The cleaning assembly also includes a first plug (10) and a second plug (11), with the first plug (10) located at the bottom of the piston chamber and the second plug (11) threadedly connected to the bottom of the valve chamber. Both the first plug (10) and the second plug (11) are made of stainless steel.

6. A manual replenishment pump according to claim 4, characterized in that, The buffer pad (9) is made of polyurethane, and the external cleaning gasket (12) is made of PTFE.

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