A new type of plug-in manual pump

Abstract

The utility model relates to manual pump technical field, specifically disclose a novel plug-in type manual pump, include: handle part, operating ball head, pump body, valve seat and oil inlet and outlet assembly, wherein, the first end of handle part is detachably connected with the second end of operating ball head, the first end of operating ball head is from the second end of pump body and enters to the inside of pump body, the second end of valve seat is connected with the first end of pump body, and the first end of valve seat is screwed with oil inlet and outlet assembly, the utility model discloses novel plug-in type manual pump has innovated the design of novel oil inlet and outlet check valve, this makes the pump head of this manual pump more easily install, and the structure is more reliable, and the pressure -maintaining performance is better.

Description

Technical Field

[0001] This utility model relates to the field of manual pump technology, and in particular to a novel cartridge manual pump. Background Technology

[0002] Existing manual pumps generally employ cumbersome and complex connection methods in their inlet and outlet oil lines. This complexity not only makes installation more difficult and time-consuming but also significantly increases the workload for daily maintenance and repair. More seriously, the excessive number of connections makes it difficult to guarantee a tight seal, leading to leaks and other malfunctions during actual use. These problems not only affect the efficiency and stability of the manual pump but may also threaten the safe operation of the entire system, thus severely impacting the pump's normal use and lifespan.

[0003] Therefore, how to solve the difficulties in installing and maintaining existing manual pumps, as well as the problem of easy leakage, has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, this utility model proposes a new type of cartridge manual pump to address the shortcomings of the existing technology, aiming to solve the problems of difficulty in installation and maintenance of existing manual pumps, as well as the easy occurrence of leakage.

[0005] This utility model provides a novel cartridge-type manual pump, comprising: Handle, operating ball head, pump body, valve seat, and inlet / outlet oil assembly; The first end of the handle is detachably connected to the second end of the operating ball head; the first end of the operating ball head extends from the second end of the pump body into the interior of the pump body; the second end of the valve seat is connected to the first end of the pump body, and the first end of the valve seat is threadedly connected to the inlet / outlet oil assembly.

[0006] Furthermore, the handle portion includes: The first end of the operating lever is detachably connected to the second end of the operating ball head; A bolt is provided on the side of the operating lever near the operating ball head; The handle is threadedly connected to the second end of the operating lever.

[0007] Furthermore, the operating ball head is provided with a first threaded hole, a second threaded hole, and a pin hole; The first threaded hole is formed at the second end of the operating ball head in a direction parallel to the axis of the operating ball head; there are two second threaded holes, which are symmetrically formed in a direction perpendicular to the axis of the operating ball head and located on the side of the operating ball head away from the pump body; the pin hole penetrates the operating ball head in a direction perpendicular to the axis of the operating ball head and is located in the middle of the operating ball head, for installing a pin to realize the rotational connection between the operating ball head and the pump body.

[0008] Furthermore, the centerline of the pin hole is perpendicular to the centerline of the second threaded hole.

[0009] Furthermore, a dust cover is provided at the connection between the operating ball head and the pump body.

[0010] Furthermore, the pump body includes: Manual pump bracket; The piston rod has its second end located inside the manual pump bracket and connected to the first end of the operating ball head.

[0011] Furthermore, the oil inlet / outlet assembly includes: The housing has a second end threadedly connected to the valve seat. There are two retaining rings and two first O-rings. The two retaining rings and the two first O-rings are symmetrically arranged on both sides of the first end of the housing, and the first O-rings are arranged close to the valve seat.

[0012] Furthermore, the oil inlet / outlet assembly also includes: Oil inlet and oil outlet lines; The oil inlet pipe is provided with a first bearing ball, a first spring and a first set screw arranged sequentially along the hydraulic oil flow direction; the first bearing ball is located at the end of the first spring away from the valve seat and abuts against the inner wall of the middle part of the oil inlet pipe; the first set screw is located at the end of the first spring near the valve seat and is a hexagonal socket head cap screw with a through hole in the middle as an oil inlet channel; the first set screw is threaded to the top of the housing. The oil outlet pipeline is provided with a second bearing ball, a second spring, and a second set screw arranged sequentially along the hydraulic oil flow direction; the second bearing ball is located at the end of the second spring near the valve seat, and the second bearing ball abuts against the inner wall of the middle part of the oil outlet pipeline; the second set screw is located at the end of the second spring away from the valve seat, and the second set screw is threaded to the bottom of the housing. The oil outlet is located in the middle of the side of the housing away from the oil inlet pipe.

[0013] Furthermore, a second O-ring is symmetrically arranged between the housing and the valve seat.

[0014] Furthermore, a third O-ring is symmetrically arranged between the piston rod and the valve seat.

[0015] Compared with existing technologies, the advantages of this utility model lie in its innovative design of a novel inlet and outlet check valve structure for the new manual pump head. This makes the pump head easier to install and more reliable. During the downward pressing of the operating handle (i.e., the oil suction process), the outlet check valve closes under the action of spring force, maintaining a certain vacuum in the lower chamber of the pump body. This allows hydraulic oil to smoothly open the inlet check valve and enter the pump body through the central through-hole of the first set screw under atmospheric pressure. When the handle is pulled up (i.e., the oil discharge process), the volume of hydraulic oil in the lower chamber of the pump body is compressed, and the pressure increases. During this process, the inlet check valve closes, and the outlet check valve opens, allowing the hydraulic oil to smoothly enter the hydraulic valve assembly. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the novel cartridge-type manual pump of this utility model; Figure 2 for Figure 1 A partial schematic diagram at point I in the middle; Figure 3 for Figure 1 A partial schematic diagram at point F in the middle; Figure 4 This is a schematic diagram of the overall structure of the novel cartridge-type manual pump of this utility model.

[0017] In the diagram: 111, Operating lever; 112, Bolt; 113, Handle; 120, Operating ball head; 121, First threaded hole; 122, Second threaded hole; 123, Pin hole; 131, Manual pump bracket; 132, Piston rod; 140, Valve seat; 150, Oil inlet / outlet assembly; 151, Housing; 152, Retaining ring; 153, First O-ring; 154, Oil inlet pipe; 1541, First bearing ball; 1542, First spring; 1543, First set screw; 155, Oil outlet pipe; 1551, Second bearing ball; 1552, Second spring; 1553, Second set screw; 1554, Oil outlet; 160, Second O-ring; 170, Third O-ring; 180, Dust cover. Detailed Implementation

[0018] 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. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0019] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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 application.

[0020] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0021] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0022] See Figure 1-4 As shown, this embodiment provides a novel cartridge-type manual pump, comprising: Handle, operating ball head 120, pump body, valve seat 140 and inlet / outlet oil assembly 150; The first end of the handle is detachably connected to the second end of the operating ball head 120; the first end of the operating ball head 120 extends from the second end of the pump body into the interior of the pump body; the second end of the valve seat 140 is connected to the first end of the pump body, and the first end of the valve seat 140 is threadedly connected to the inlet / outlet oil assembly 150.

[0023] In this embodiment, the inlet check valve consists of a first bearing ball 1541, a first spring 1542, and a first set screw 1543 in the inlet pipe 154, allowing liquid to flow from the inlet pipe 154 into the piston chamber of the pump body; the outlet check valve consists of a second bearing ball 1551, a second spring 1552, and a second set screw 1553 in the outlet pipe 155, allowing liquid to flow from the piston chamber of the pump body to the outlet port 1554 of the outlet pipe 155, preventing liquid backflow.

[0024] It is understandable that the novel manual pump head provided in this embodiment innovatively designs a new inlet and outlet check valve structure, which makes the pump head easier to install and the structure more reliable. During the downward pressing of the operating handle 113 (i.e., the oil suction process), the outlet check valve closes under the action of spring force, and the lower cavity of the pump body maintains a certain vacuum, so that the hydraulic oil can smoothly open the inlet check valve and enter the pump body through the middle through hole of the first set screw under atmospheric pressure. When the handle 113 is pulled up (i.e., the oil discharge process), the volume of hydraulic oil in the lower cavity of the pump body is compressed and the pressure increases. During this process, the inlet check valve closes and the outlet check valve opens, allowing the hydraulic oil to smoothly enter the hydraulic valve assembly.

[0025] Specifically, the handle includes: The first end of the operating lever 111 is detachably connected to the second end of the operating ball head 120; Bolt 112 is located on the side of the operating lever 111 near the operating ball head 120; The handle 113 is threaded to the second end of the operating lever 111.

[0026] Understandably, the detachable connection between the operating lever 111 and the operating ball head 120 facilitates the assembly and maintenance of the manual pump in different scenarios. The bolt 112 further enhances the stability of the connection between the operating lever 111 and the operating ball head 120, preventing loosening during frequent operation. The threaded connection between the handle 113 and the operating lever 111 not only facilitates installation and disassembly but also allows for appropriate adjustment of the position and angle of the handle 113 according to the user's habits and needs, improving operational comfort. In practical applications, the advantages of this new cartridge-type manual pump are even more pronounced. Its compact design allows for flexible installation and use in limited spaces, making it particularly suitable for work scenarios with high space requirements. Moreover, due to the unique design of the inlet and outlet check valves, the reliability of this manual pump during operation is greatly improved, reducing the probability of failures caused by liquid backflow and other problems, thus lowering maintenance costs and downtime.

[0027] Specifically, the operating ball head 120 is provided with a first threaded hole 121, a second threaded hole 122 and a pin hole 123; The first threaded hole 121 is opened at the second end of the operating ball head 120 in a direction parallel to the axis of the operating ball head 120; there are two second threaded holes 122, which are symmetrically opened in a direction perpendicular to the axis of the operating ball head 120 and located on the side of the operating ball head 120 away from the pump body; the pin hole 123 penetrates the operating ball head 120 in a direction perpendicular to the axis of the operating ball head 120 and is located in the middle of the operating ball head 120, and is used to install a pin to realize the rotational connection between the operating ball head 120 and the pump body.

[0028] Specifically, the center line of the pin hole 123 is perpendicular to the center line of the second threaded hole 122.

[0029] Understandably, the first threaded hole 121 is used for a detachable connection with the operating lever 111, facilitating quick assembly and disassembly of the manual pump under different operating conditions. The two symmetrically positioned second threaded holes 122 provide flexible options for connecting the operating ball head 120 to other components, allowing for the installation of different auxiliary devices to adapt to diverse working scenarios. The pin hole 123 penetrates the middle of the operating ball head 120, enabling a rotatable connection between the operating ball head 120 and the pump body via a pin. This rotatable connection allows the operating ball head 120 to swing flexibly within the pump body, thereby more precisely controlling the pump's oil suction and discharge processes. In actual operation, when the handle 113 pulls the operating lever 111, the operating ball head 120 rotates around the pin. This rotation effectively transmits the pulling and pressing force of the handle 113 to the pump body, achieving efficient suction and discharge of hydraulic oil. Meanwhile, since the center line of the pin hole 123 is perpendicular to the center line of the second threaded hole 122, this design ensures that the force distribution among the components is more uniform during the rotation of the operating ball head 120, avoiding wear or damage to the components due to uneven force, and further improving the service life and working stability of the manual pump.

[0030] Specifically, a dust cover 180 is provided at the connection between the operating ball head 120 and the pump body.

[0031] Understandably, the dust cover 180 effectively prevents dust and impurities from entering the connection between the operating ball head 120 and the pump body, avoiding interference with the rotation of the operating ball head 120 and the normal operation of the pump. In harsh working environments, such as mines and construction sites, where dust and impurities are abundant, without the protection of the dust cover 180, friction between the operating ball head 120 and the pump body can easily increase, affecting the flexible rotation of the operating ball head 120 and potentially damaging related components of the operating ball head 120 or the pump body. The dust cover 180 acts as a barrier, blocking dust and impurities from the outside, keeping the connection between the operating ball head 120 and the pump body clean at all times, thus ensuring the long-term stable operation of the manual pump.

[0032] Specifically, the pump body includes: Manual pump bracket 131; The piston rod 132 has its second end located inside the manual pump bracket 131 and connected to the first end of the operating ball head 120.

[0033] Understandably, the manual pump bracket 131 provides a stable support structure for the entire pump body, ensuring the stability of the manual pump during operation. It can withstand the forces from the operating ball head 120 and the piston rod 132, preventing the pump body from shaking or shifting during operation. The connection between the piston rod 132 and the operating ball head 120 allows the rotation of the operating ball head 120 to be accurately transmitted to the piston rod 132. When the operating ball head 120 rotates under the drive of the handle 113, the piston rod 132 will make a corresponding linear motion inside the manual pump bracket 131, thereby realizing the pump body's oil suction and discharge functions. This linear motion of the piston rod 132 is a key aspect of the entire manual pump's operation. During oil suction, the piston rod 132 pulls upward, creating a certain vacuum in the lower chamber of the pump body, allowing hydraulic oil to enter the pump body under atmospheric pressure. During oil discharge, the piston rod 132 presses downward, compressing the hydraulic oil in the lower chamber of the pump body, increasing its pressure, thereby opening the discharge check valve and discharging the hydraulic oil. This method of moving the piston rod 132 by operating the ball head 120 makes the operation of the manual pump more flexible and efficient.

[0034] Specifically, the oil inlet / outlet assembly 150 includes: The housing 151 has a second end threadedly connected to the valve seat 140; There are two retaining rings 152 and two first O-rings 153. The two retaining rings 152 and the two first O-rings 153 are symmetrically arranged on both sides of the first end of the housing 151, and the first O-rings 153 are arranged close to the valve seat 140.

[0035] Understandably, the threaded connection between the housing 151 and the valve seat 140 not only facilitates the installation and disassembly of the inlet / outlet assembly 150 but also ensures a tight seal, preventing hydraulic oil leakage. The retaining ring 152 positions and secures the first O-ring 153, ensuring it does not shift during operation. The first O-ring 153, as a sealing element, further enhances the sealing of the inlet / outlet assembly 150 at connections with other components, preventing hydraulic oil leakage under high pressure. In actual operation, the pressure within the hydraulic system fluctuates significantly. Poor sealing performance can easily lead to hydraulic oil leakage, wasting energy and potentially affecting the normal operation of the entire hydraulic system. Therefore, this dual-seal design, achieved through the retaining ring 152 and the first O-ring 153, greatly improves the sealing reliability of the inlet / outlet assembly 150.

[0036] Specifically, the inlet / outlet oil assembly 150 also includes: Oil inlet pipe 154 and oil outlet pipe 155; The oil inlet pipe 154 is provided with a first bearing ball 1541, a first spring 1542 and a first set screw 1543 arranged sequentially along the hydraulic oil flow direction. The first bearing ball 1541 is located at the end of the first spring 1542 away from the valve seat 140, and the first bearing ball 1541 abuts against the inner wall of the middle part of the oil inlet pipe 154. The first set screw 1543 is located at the end of the first spring 1542 near the valve seat 140, and the first set screw 1543 is a hexagonal socket head cap screw with a through hole in the middle as an oil inlet channel. The first set screw 1543 is threaded to the top of the housing 151. Inside the oil outlet pipe 155, along the hydraulic oil flow direction, are arranged a second bearing ball 1551, a second spring 1552, and a second set screw 1553 in sequence; the second bearing ball 1551 is located at the end of the second spring 1552 near the valve seat 140, and the second bearing ball 1551 abuts against the inner wall of the middle part of the oil outlet pipe 155; the second set screw 1553 is located at the end of the second spring 1552 away from the valve seat 140, and the second set screw 1553 is threaded to the bottom of the housing 151. The oil outlet 1554 is located in the middle of the side of the housing 151 away from the oil inlet pipe 154.

[0037] Understandably, the arrangement of components within the oil inlet pipe 154 and oil outlet pipe 155 precisely achieves the unidirectional control function of oil inlet and outlet. In the oil inlet pipe 154, the first bearing ball 1541 abuts against the inner wall of the middle part of the oil inlet pipe 154. When no hydraulic oil flows in, it can effectively prevent external air or impurities from entering the pump body. When the pump body is in the oil suction process, the pressure of the hydraulic oil pushes the first bearing ball 1541 to overcome the elastic force of the first spring 1542, thereby opening the oil inlet channel and allowing the hydraulic oil to smoothly enter the pump body. The first set screw 1543 not only serves to fix the first spring 1542, ensuring the stability of the inlet check valve structure, but also acts as an inlet channel due to the through hole in the middle. In the outlet pipe 155, the second bearing ball 1551 abuts against the inner wall of the middle part of the outlet pipe 155. When the pump body is not in the oil discharge operation, it can prevent hydraulic oil from flowing back into the pump body. When the pump body is in the oil discharge process, the pressure of the compressed hydraulic oil in the lower cavity of the pump body increases, pushing the second bearing ball 1551 to overcome the elastic force of the second spring 1552, opening the oil discharge channel, and allowing the hydraulic oil to be discharged from the outlet port 1554. The second set screw 1553 also serves to fix the second spring 1552, ensuring the normal operation of the outlet check valve. The outlet port 1554 is located in the middle of the housing 151 on the side away from the inlet pipe 154. This layout is conducive to the smooth discharge of hydraulic oil and avoids mutual interference between the oil inlet and outlet processes. At the same time, it also facilitates the connection of the oil outlet 1554 with subsequent hydraulic system components, improving the integration and working efficiency of the entire hydraulic system.

[0038] Specifically, a second O-ring 160 is symmetrically arranged between the housing 151 and the valve seat 140.

[0039] Specifically, a third O-ring 170 is symmetrically arranged between the piston rod 132 and the valve seat 140.

[0040] Understandably, the placement of the second O-ring 160 and the third O-ring 170 further enhances the overall sealing performance of the manual pump. The second O-ring 160 seals between the housing 151 and the valve seat 140, preventing hydraulic oil leakage from the connection gap. During hydraulic system operation, the hydraulic oil generates pressure; if the seal is poor, hydraulic oil may leak out, leading to unstable system pressure and affecting the normal operation of the manual pump. The symmetrical placement of the second O-ring 160 provides uniform sealing force in all directions, ensuring reliable sealing. The third O-ring 170 seals between the piston rod 132 and the valve seat 140, preventing hydraulic oil leakage from the gap between them. The piston rod 132 moves linearly during operation, requiring the sealing element to adapt to this movement while maintaining a good seal. The symmetrical arrangement of the third O-ring 170 ensures that the gap between the piston rod 132 and the valve seat 140 is always sealed when the piston rod 132 moves, preventing hydraulic oil leakage.

[0041] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A novel cartridge-type manual pump, characterized in that, include: Handle, operating ball head, pump body, valve seat, and inlet / outlet oil assembly; The first end of the handle is detachably connected to the second end of the operating ball head; the first end of the operating ball head extends from the second end of the pump body into the interior of the pump body; the second end of the valve seat is connected to the first end of the pump body, and the first end of the valve seat is threadedly connected to the inlet / outlet oil assembly. The oil inlet / outlet assembly includes: The housing has a second end threadedly connected to the valve seat. There are two retaining rings and two first O-rings. The two retaining rings and the two first O-rings are symmetrically arranged on both sides of the first end of the housing, and the first O-rings are arranged close to the valve seat. The oil inlet / outlet assembly also includes: Oil inlet and oil outlet lines; The oil inlet pipe is provided with a first bearing ball, a first spring, and a first set screw arranged sequentially along the hydraulic oil flow direction. The first bearing ball is located at the end of the first spring away from the valve seat and abuts against the inner wall of the middle part of the oil inlet pipe. The first set screw is located at the end of the first spring near the valve seat and is a hexagonal socket head cap screw with a through hole in the middle as an oil inlet channel. The first set screw is threaded to the top of the housing. The oil outlet pipeline is provided with a second bearing ball, a second spring, and a second set screw arranged sequentially along the hydraulic oil flow direction; the second bearing ball is located at the end of the second spring near the valve seat, and the second bearing ball abuts against the inner wall of the middle part of the oil outlet pipeline; the second set screw is located at the end of the second spring away from the valve seat, and the second set screw is threaded to the bottom of the housing. The oil outlet is located in the middle of the side of the housing away from the oil inlet pipe.

2. The novel cartridge-type manual pump according to claim 1, characterized in that, The handle portion includes: The first end of the operating lever is detachably connected to the second end of the operating ball head; A bolt is provided on the side of the operating lever near the operating ball head; The handle is threadedly connected to the second end of the operating lever.

3. The novel cartridge-type manual pump according to claim 2, characterized in that, The operating ball head is provided with a first threaded hole, a second threaded hole, and a pin hole; The first threaded hole is formed at the second end of the operating ball head in a direction parallel to the axis of the operating ball head; there are two second threaded holes, which are symmetrically formed in a direction perpendicular to the axis of the operating ball head and located on the side of the operating ball head away from the pump body; the pin hole penetrates the operating ball head in a direction perpendicular to the axis of the operating ball head and is located in the middle of the operating ball head, for installing a pin to realize the rotational connection between the operating ball head and the pump body.

4. The novel cartridge-type manual pump according to claim 3, characterized in that, The centerline of the pin hole is perpendicular to the centerline of the second threaded hole.

5. The novel cartridge-type manual pump according to claim 4, characterized in that, A dust cover is provided at the connection between the operating ball head and the pump body.

6. The novel cartridge-type manual pump according to claim 5, characterized in that, The pump body includes: Manual pump bracket; The piston rod has its second end located inside the manual pump bracket and connected to the first end of the operating ball head.

7. The novel cartridge-type manual pump according to claim 6, characterized in that, A second O-ring is symmetrically arranged between the housing and the valve seat.

8. The novel cartridge-type manual pump according to claim 7, characterized in that, A third O-ring is symmetrically arranged between the piston rod and the valve seat.

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