Portable emergency manual pump set

Abstract

The utility model discloses a portable emergency manual pump set which comprises a fixing base, a manual pump, a valve block, a manual reversing valve, a first valve, a second valve and a pipe joint assembly, the manual pump, the valve block, the manual reversing valve, the first valve, the second valve and the pipe joint assembly are arranged above the fixing base, the manual pump is fixedly connected with the fixing base, and the two ends of the pipe joint assembly are connected with the manual pump and the valve block respectively. The bottom of the valve block is connected with the top of the manual pump, the first valve and the second valve are both fixedly connected with the valve block, the bottom of the manual reversing valve is connected with the top of the valve block, and the manual reversing valve is a three-position four-way reversing valve. According to the portable emergency manual pump set, when a main power source in a hydraulic system loses efficacy or loses power, emergency operation can be conducted on the hydraulic system by connecting the pipe joint assembly with an oil tank of the hydraulic system and connecting one end of the first valve and one end of the second valve with an execution unit in the hydraulic system, universality is high, and operation is convenient. In addition, the production cost is low, and the function completeness and the safety of the hydraulic system can be effectively guaranteed under the emergency situation.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic systems, and in particular relates to a portable emergency manual pump set. Background Art

[0002] In a hydraulic system, when the main power source fails or the power is lost, an emergency manual pump set is often required to ensure system functionality and safety.

[0003] For example, the Chinese utility model patent, CN205298124U, entitled "A Hydraulic Hand Pump Module for Emergency Operation," discloses a method for ensuring the sealing of the load end by providing a hydraulic lock before the inlet and outlet oil passages. This method is suitable for use in high-pressure hydraulic systems. A relief valve also provides an upper limit on the pressure output of the hand pump, preventing excessive system pressure from damaging the terminal actuator and providing overload protection. The main problems with this method are that the valve body integrates a complex hydraulic valve assembly with numerous internal pipes. During use, the valve body must be superimposed on a valve block in another hydraulic system, ensuring that the pipes and holes on the valve body are aligned with the corresponding pipes. Furthermore, the pipe connections must be made, which is cumbersome and can lead to incorrect pipe connections in an emergency. Furthermore, the manual pump module is not universally compatible, requiring the pipes and holes on the valve block in the hydraulic system to match those of the manual pump module. Furthermore, the manual pump module is only suitable for use in high-pressure hydraulic systems. Utility Model Content

[0004] In view of this, in order to overcome the defects of the prior art, the utility model provides a portable emergency manual pump set, which is easy to operate and has strong versatility.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A portable emergency manual pump assembly includes a fixing seat and a manual pump, a valve block, a manual reversing valve, a first valve, a second valve and a pipe joint assembly arranged above the fixing seat. The manual pump is fixedly connected to the fixing seat, and the two ends of the pipe joint assembly are respectively connected to the manual pump and the valve block. The bottom of the valve block is connected to the top of the manual pump, the first valve and the second valve are both fixedly connected to the valve block, and the bottom of the manual reversing valve is connected to the top of the valve block. The manual reversing valve is a three-position four-way reversing valve.

[0007] According to some preferred implementation aspects of the present invention, the first valve and the second valve are both located on one side of the valve block, the manual reversing valve includes port A, port B, port P and port T, one end of the first valve is connected to port A of the manual reversing valve through the valve block, and one end of the second valve is connected to port B of the manual reversing valve through the valve block.

[0008] According to some preferred implementation aspects of the present invention, the outlet of the manual pump is connected to the P port of the manual reversing valve through the valve block.

[0009] According to some preferred embodiments of the present invention, the first valve is a ball valve or a throttle valve, and the second valve is a ball valve or a throttle valve, to achieve the on-off function of the pipeline. Preferably, the first valve and the second valve are both ball valves.

[0010] According to some preferred implementation aspects of the present invention, the pipe joint assembly includes a pipe joint and a filter, and the pipe joint includes a first joint, a second joint, and a third joint.

[0011] According to some preferred implementation aspects of the present invention, one end of the filter is connected to and communicated with the first connector, and the other end of the filter is connected to and communicated with the inlet of the manual pump.

[0012] According to some preferred implementation aspects of the present invention, the second connector is connected to the valve block and is located below the first valve and the second valve, and the second connector is connected to the T-port of the manual reversing valve through the valve block.

[0013] According to some preferred implementation aspects of the present invention, the third connector is connected to an oil tank of the hydraulic system.

[0014] According to some preferred embodiments of the present invention, the filter is a Y-type filter, which is used to filter the oil to prevent impurities in the oil from blocking the oil flow channels in the manual pump, valve block and manual reversing valve.

[0015] According to some preferred embodiments of the present invention, the ends of the first and second valves distal from the valve block are connected to an actuator of the hydraulic system. The ends of the first and second valves distal from the valve block are each configured to connect to an actuator (e.g., a hydraulic cylinder or hydraulic motor) in the hydraulic system to ensure proper operation of the actuator. Furthermore, the manual reversing valve includes a joystick, which, by turning, switches the direction of hydraulic output, controlling the extension and retraction of a hydraulic cylinder or the forward and reverse rotation of a hydraulic motor in the hydraulic system.

[0016] Compared with the prior art, the advantages of the present invention are as follows: the portable emergency manual pump group of the present invention has a small and compact structure and is easy to carry; when the main power source in the hydraulic system fails or the power is lost, the hydraulic system can be operated in an emergency by connecting the pipe joint assembly to the oil tank of the hydraulic system and connecting one end of the first valve and the second valve to the execution unit in the hydraulic system respectively. The operation is simple, the versatility is strong, and the production cost is low. In an emergency, the functional integrity of the hydraulic system and the safety of the system can be effectively guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of a portable emergency manual pump set in a preferred embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the principle of a portable emergency manual pump set (when the manual reversing valve is in the middle position) in a preferred embodiment of the present utility model;

[0020] Including: fixed seat-1, valve block-2, manual reversing valve-3, operating handle-31, first valve-4, second valve-5, pipe joint-6, first joint-61, second joint-62, third joint-63, filter-7, manual pump-8. DETAILED DESCRIPTION

[0021] In order to help those skilled in the art better understand the technical solutions of the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0022] like Figure 1 and Figure 2 As shown, the portable emergency manual pump assembly in this embodiment includes a fixed base 1 and a manual pump 8, a valve block 2, a manual reversing valve 3, a first valve 4, a second valve 5, and a pipe joint 6 assembly arranged above the fixed base 1. The bottom of the manual pump 8 is fixedly connected to the top of the fixed base 1 via a bolt and nut assembly. The bottom of the valve block 2 is connected to the top of the manual pump 8, and the bottom of the manual reversing valve 3 is connected to the top of the valve block 2. The first valve 4 and the second valve 5 are both fixedly connected to the valve block 2 and are both located on one side of the valve block 2. The manual reversing valve 3 in this embodiment is a three-position, four-way reversing valve, which includes a valve body, a valve core, and a control handle 31. The valve core can be rotated by turning the control handle 31.

[0023] Specifically, the pipe joint 6 assembly includes a pipe joint 6 and a filter 7, wherein the pipe joint 6 includes a first joint 61, a second joint 62, and a third joint 63. One end of the filter 7 is connected to and communicates with the first joint 61, and the other end of the filter 7 is connected to and communicates with the inlet of the manual pump 8; the second joint 62 is connected to the valve block 2 and is located below the first valve 4 and the second valve 5; the third joint 63 is connected to the oil tank of the hydraulic system, as shown in FIG. Figure 2 As shown, the third connector 63 is connected to the oil tank and serves as an oil suction port S to suck the oil in the oil tank into the manual pump 8 through the filter 7. The filter 7 in this embodiment is a Y-type filter 7 for coarsely filtering the oil.

[0024] Furthermore, the manual reversing valve 3 includes ports A, B, P, and T. One end of the first valve 4 communicates with port A of the manual reversing valve 3 through the valve block 2. One end of the second valve 5 communicates with port B of the manual reversing valve 3 through the valve block 2. The outlet of the manual pump 8 communicates with port P of the manual reversing valve 3 through the valve block 2. The second connector 62 communicates with port T of the manual reversing valve 3 through the valve block 2. In this embodiment, both the first valve 4 and the second valve 5 are preferably ball valves to provide on-off control of the pipeline. When the main power source in the hydraulic system fails or loses power, the ends of the first valve 4 and the second valve 5 away from the valve block 2 are used to connect to the actuators (e.g., hydraulic cylinders or hydraulic motors) in the hydraulic system to ensure normal operation of the actuators.

[0025] The working principle of the manual pump set in this embodiment is briefly described below:

[0026] When the main power source in the hydraulic system fails or loses power, emergency operation can be performed by connecting the third joint 63 of the pipe joint 6 to the oil tank of the hydraulic system, and connecting the ends of the first valve 4 and the second valve 5 away from the valve block 2 to the execution units in the hydraulic system (taking the hydraulic cylinder as an example).

[0027] The manual reversing valve 3 of this embodiment is a three-position four-way reversing valve, that is, the operating handle 31 can be turned left, turned right or kept in the middle position. When the manual pump group is in the non-working state, the manual reversing valve 3 is in the middle position, such as Figure 2 As shown, at this time, the P port of the manual reversing valve 3 is connected to the T port, and the A port and the B port remain closed. They are not connected to the first valve 4 and the second valve 5. In this state, the hydraulic oil in the manual pump 8 can only flow back to the oil tank. Even if the staff accidentally touches the operating handle 31, it will not have any impact.

[0028] When the operating handle 31 is turned to the right, the P port of the manual reversing valve 3 is connected to the B port, and the A port of the manual reversing valve 3 is connected to the T port. The hydraulic oil passes from the third joint 63 through the filter 7 into the manual pump 8, and then enters the manual reversing valve 3. At this time, the oil circuit is divided into two paths: path A and path B. The hydraulic oil in path B enters the hydraulic cylinder through the second valve 5, pushing the hydraulic cylinder up and extending the piston rod. The hydraulic oil in the hydraulic cylinder passes through the first valve 4 and returns to the manual pump 8 from path A. When the operating handle 31 is turned to the left, the manual reversing valve After the direction is reversed, the P port of the manual reversing valve 3 is connected to the A port, and the B port of the manual reversing valve 3 is connected to the T port. The hydraulic oil flows from the third joint 63 through the filter 7 into the manual pump 8, and then into the manual reversing valve 3. At this time, the oil circuit is also divided into two paths: path A and path B. Conversely, the hydraulic oil in path A enters the hydraulic cylinder through the first valve 4, pushing the hydraulic cylinder down and retracting the piston rod. The hydraulic oil in the lower part of the hydraulic cylinder passes through the second valve 5 and returns to the manual pump 8 from path B, thereby realizing the extension and retraction of the piston rod of the hydraulic cylinder.

[0029] The manual pump assembly of this embodiment is simple to operate and highly versatile, and can effectively ensure the functional integrity and safety of the hydraulic system in an emergency.

[0030] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A portable emergency manual pump set, characterized in that: It includes a fixing seat and a manual pump, a valve block, a manual reversing valve, a first valve, a second valve and a pipe joint assembly arranged above the fixing seat. The manual pump is fixedly connected to the fixing seat. The two ends of the pipe joint assembly are respectively connected to the manual pump and the valve block. The bottom of the valve block is connected to the top of the manual pump. The first valve and the second valve are both fixedly connected to the valve block. The bottom of the manual reversing valve is connected to the top of the valve block. The manual reversing valve is a three-position four-way reversing valve.

2. The portable emergency manual pump set according to claim 1, characterized in that: The first valve and the second valve are both located on one side of the valve block. The manual reversing valve includes port A, port B, port P and port T. One end of the first valve is connected to port A of the manual reversing valve through the valve block, and one end of the second valve is connected to port B of the manual reversing valve through the valve block.

3. The portable emergency manual pump set according to claim 2, characterized in that: The outlet of the manual pump is communicated with the P port of the manual reversing valve through the valve block.

4. The portable emergency manual pump set according to claim 2, characterized in that: The first valve is a ball valve or a throttle valve, and the second valve is a ball valve or a throttle valve.

5. The portable emergency manual pump set according to claim 2, characterized in that: The pipe joint assembly includes a pipe joint and a filter, and the pipe joint includes a first joint, a second joint and a third joint.

6. The portable emergency manual pump set according to claim 5, characterized in that: One end of the filter is connected to and communicated with the first joint, and the other end of the filter is connected to and communicated with the inlet of the manual pump.

7. The portable emergency manual pump set according to claim 5, characterized in that: The second connector is connected to the valve block and is located below the first valve and the second valve. The second connector is communicated with the T-port of the manual reversing valve through the valve block.

8. The portable emergency manual pump set according to claim 6, characterized in that: The third joint is communicated with the oil tank of the hydraulic system.

9. The portable emergency manual pump set according to claim 6, characterized in that: The filter is a Y-type filter.

10. The portable emergency manual pump set according to claim 2, characterized in that: One end of the first valve and the second valve away from the valve block is connected to an execution unit of the hydraulic system.

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