Double-acting manual hydraulic pump

Abstract

The utility model discloses a double-acting manual hydraulic pump which comprises a pump assembly, a valve block assembly and a reversing valve assembly. The pump assembly comprises a pump body, fixing feet installed at the bottom of the pump body, a large elastic cylindrical pin arranged at the top end of the pump body, a handle connected to the large elastic cylindrical pin, an oil tank body installed at one end of the pump body, a pull rod arranged in the oil tank body and a rear end cover assembled at the end of the pull rod. The valve block assembly comprises a valve seat connected to the other end of the pump body. The rotating shaft is driven to rotate by rotating the handle on the valve seat, the rotating shaft is provided with the oil way groove, the pin shaft below the rotating shaft is provided with the hole, the pin shaft and the rotating shaft can achieve high-pressure sealing under the action of the spring and oil pressure, and output of oil pressure of the two oil ports in different directions can be achieved by rotating the connection direction of the oil way groove. And the two sides of the valve block assembly are each provided with one reversing valve assembly, the oil outlet sequence of the four oil channels can be achieved, and the practicability of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of manual hydraulic pump technology, specifically a double-acting manual hydraulic pump. Background Technology

[0002] Ultra-high pressure manual hydraulic pumps, as a simple and convenient hydraulic power source, are widely used in shipbuilding, coal mining machinery, petrochemicals, metallurgy, power, and heavy machinery industries. They are widely accepted by users due to their small size, light weight, portability, and high safety. However, their single output oil passage makes it difficult to quickly adjust the output value, posing a certain degree of difficulty in use. Therefore, a double-acting manual hydraulic pump is proposed. Utility Model Content

[0003] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0004] Therefore, the technical solution adopted by this utility model is as follows:

[0005] A double-acting manual hydraulic pump includes a pump assembly, a valve block assembly, and a directional valve assembly. The pump assembly includes a pump body, a fixed foot mounted at the bottom of the pump body, a large elastic cylindrical pin located at the top of the pump body, a handle connected to the large elastic cylindrical pin, an oil tank body mounted at one end of the pump body, a pull rod disposed inside the oil tank body, and a rear end cap fitted to the end of the pull rod. The valve block assembly includes a valve seat connected to the other end of the pump body, a pin disposed inside the valve seat, a spring connected to the outer end of the pin, and an inner spring threaded to the side of the valve seat. The reversing valve assembly includes an upper valve body mounted on the valve seat via hexagonal screws 1 and 2, a handle seat connected to the end of the upper valve body, a handle inserted into one side of the handle seat, a small elastic cylindrical pin fixedly connected inside the handle seat, a cylindrical pin and a steel ball disposed inside the contact position between the small elastic cylindrical pin and the upper valve body, and a stop spring connected to the bottom of the steel ball to provide elasticity. The small elastic cylindrical pin is fixedly connected to the rotating shaft.

[0006] Preferably, the number of the reversing valve assemblies is two sets, and the two sets of reversing valve assemblies are symmetrically arranged on both sides of the valve block assembly.

[0007] Preferably, a pressure gauge is installed on one side of the pump body, and a copper gasket is provided at the bottom of the pressure gauge where it connects to the pump body.

[0008] Preferably, the top and bottom of the fuel tank body are provided with fuel tank cardboard, and the top of the fuel tank body is equipped with a fuel tank handle.

[0009] Preferably, the top of the handle and the grip are respectively fitted with handle sleeves and grip sleeves of the same material.

[0010] Preferably, the inner end of the pull rod is connected to a piston, and the piston is slidably connected inside the handle sleeve.

[0011] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows:

[0012] In this invention, rotating the handle 330 on the valve seat drives the rotating shaft 260 to rotate. The rotating shaft 260 has an oil passage groove, and the pin 220 below the rotating shaft has a hole. Through the action of the spring 230 and the oil pressure, the pin 220 and the rotating shaft 260 can achieve a high-pressure seal. By rotating the connection direction of the oil passage groove, the oil pressure of the two oil ports can be output in different directions. In addition, each side of the valve block assembly 200 has a reversing valve assembly 300, which can realize the oil output sequence of the four oil passages, thus improving the practicality of the device. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model;

[0014] Figure 2 This is a schematic diagram of the structure of one embodiment of the present utility model;

[0015] Figure 3 This is a schematic diagram of the structure of one embodiment of the present utility model.

[0016] Figure label:

[0017] 100. Pump assembly; 110. Pump body; 120. Pressure gauge; 130. Fixing foot; 140. Large elastic cylindrical pin; 150. Handle; 151. Handle cover; 160. Oil tank body; 161. Oil tank handle; 170. Pull rod; 180. Oil tank cardboard; 190. Rear end cover;

[0018] 200. Valve block assembly; 210. Valve seat; 220. Pin; 230. Spring; 240. Socket head screw one; 250. Socket head screw two; 260. Shaft;

[0019] 300. Directional control valve assembly; 310. Upper valve body; 320. Handle seat; 330. Handle; 331. Handle sleeve; 340. Small elastic cylindrical pin; 350. Cylindrical pin; 360. Stop spring; 370. Steel ball. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0021] The following describes, with reference to the accompanying drawings, some embodiments of a double-acting manual hydraulic pump provided by this utility model.

[0022] Example:

[0023] Combination Figure 1-3 As shown, this utility model provides a double-acting manual hydraulic pump, including a pump assembly 100, a valve block assembly 200, and a directional valve assembly 300. There are two sets of directional valve assemblies 300, symmetrically arranged on both sides of the valve block assembly 200. The pump assembly 100 includes a pump body 110, a fixing foot 130 mounted on the bottom of the pump body 110, a large elastic cylindrical pin 140 mounted on the top of the pump body 110, a handle 150 connected to the large elastic cylindrical pin 140, and an oil tank body 160 mounted on one end of the pump body 110. The tank body 160 includes a pull rod 170 located inside the tank body 160, a rear end cap 190 mounted on the end of the pull rod 170, and a pressure gauge 120 installed on one side of the pump body 110. A copper gasket is installed at the connection point between the bottom of the pressure gauge 120 and the pump body 110. The pressure gauge 120 allows for real-time reading of the pressure value on the pump body 110, facilitating operation. Tank cardboard plates 180 are installed on both the top and bottom of the tank body 160, and a tank handle 161 is installed on the top of the tank body 160. A piston is connected to the inner end of the pull rod 170, and the piston slides... Connected inside the oil tank body 160, the valve block assembly 200 includes a valve seat 210 connected to the other end of the pump body 110, a pin 220 disposed inside the valve seat 210, a spring 230 connected to the outer end of the pin 220, a first hexagonal screw 240 and a second hexagonal screw 250 threaded to the side of the valve seat 210, and a rotating shaft 260 disposed inside the valve seat 210 and abutting against the inner end of the pin 220. The reversing valve assembly 300 includes an upper valve body 31 mounted on the valve seat 210 by the first hexagonal screw 240 and the second hexagonal screw 250. 0. A handle seat 320 connected to the end of the upper valve body 310, a handle 330 inserted into one side of the handle seat 320, a small elastic cylindrical pin 340 fixedly connected inside the handle seat 320, a cylindrical pin 350 and a steel ball 370 set inside the contact position between the small elastic cylindrical pin 340 and the upper valve body 310, a stop spring 360 connected to the bottom of the steel ball 370 to provide elastic force, the small elastic cylindrical pin 340 is fixedly connected to the rotating shaft 260, and the top of the handle 150 and the handle 330 are respectively fitted with a handle sleeve 151 and a handle sleeve 331 of the same material.

[0024] Specifically, by opening the rear cover 190, hydraulic oil can be injected into the oil tank body 160 to ensure stability during use. The oil tank handle 161 provided on the oil tank body 160 can be used to lift the device for easy movement.

[0025] Among them, by setting two sets of reversing valve assemblies 300, the oil passage can be quickly switched, the output value can be changed, and the comfort of use can be improved.

[0026] The working principle and usage process of this utility model are as follows: First, assemble the device into the position where it is needed. Then, open the rear cover 190 and add hydraulic oil into the oil tank body 160. After preparation, the pump body 110 can be started by pulling the handle 150. At this time, the handle 330 can be manually pulled to change the oil passage and increase or decrease the output as needed. Finally, after use, the pressure can be released through the pressure relief valve set on the pump body 110.

[0027] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A double-acting manual hydraulic pump, characterized in that, include: Pump assembly (100), valve block assembly (200) and directional valve assembly (300); The pump assembly (100) includes a pump body (110), a fixed foot (130) installed at the bottom of the pump body (110), a large elastic cylindrical pin (140) installed at the top of the pump body (110), a handle (150) connected to the large elastic cylindrical pin (140), an oil tank body (160) installed at one end of the pump body (110), a pull rod (170) installed inside the oil tank body (160), and a rear end cap (190) assembled at the end of the pull rod (170). The valve block assembly (200) includes a valve seat (210) connected to the other end of the pump body (110), a pin (220) disposed inside the valve seat (210), a spring (230) connected to the outer end of the pin (220), a hexagonal screw one (240) and a hexagonal screw two (250) threaded to the side of the valve seat (210), and a rotating shaft (260) disposed inside the valve seat (210) and abutting against the inner end of the pin (220). The reversing valve assembly (300) includes an upper valve body (310) mounted on a valve seat (210) by a first hexagonal screw (240) and a second hexagonal screw (250), a handle seat (320) connected to the end of the upper valve body (310), a handle (330) inserted into one side of the handle seat (320), a small elastic cylindrical pin (340) fixedly connected inside the handle seat (320), a cylindrical pin (350) and a steel ball (370) disposed inside the contact position between the small elastic cylindrical pin (340) and the upper valve body (310), and a stop spring (360) connected to the bottom of the steel ball (370) to provide elastic force. The small elastic cylindrical pin (340) is fixedly connected to the rotating shaft (260).

2. A double-acting manual hydraulic pump according to claim 1, characterized in that, The number of reversing valve assemblies (300) is two sets, and the two sets of reversing valve assemblies (300) are symmetrically arranged on both sides of the valve block assembly (200).

3. A double-acting manual hydraulic pump according to claim 1, characterized in that, A pressure gauge (120) is installed on one side of the pump body (110), and a copper gasket is provided at the bottom of the pressure gauge (120) where it is connected to the pump body (110).

4. A double-acting manual hydraulic pump according to claim 1, characterized in that, The top and bottom of the fuel tank body (160) are provided with fuel tank cardboard (180), and the top of the fuel tank body (160) is equipped with a fuel tank handle (161).

5. A double-acting manual hydraulic pump according to claim 1, characterized in that, The top of the handle (150) and the handle (330) are respectively fitted with handle sleeves (151) and handle sleeves (331) of the same material.

6. A double-acting manual hydraulic pump according to claim 1, characterized in that, The inner end of the pull rod (170) is connected to a piston, which is slidably connected inside the oil tank body (160).

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