CN216665883U - A plunger pump oil pressure sealing device - Google Patents

Abstract

The utility model discloses an oil pressure sealing device for a plunger pump, which comprises a cylinder body, a power mechanism is installed inside the cylinder body, a pump body is fixedly connected to one side of the cylinder body, a working chamber is opened inside the pump body, and the working chamber is A first valve body and a second valve body are fixedly installed at both ends of the cylinder. The utility model installs the first sealing washer inside the first installation groove through the first installation groove and the second installation groove opened on the inner wall of the cylinder, and installs the first sealing gasket inside the first installation groove. The second sealing gasket is installed inside the second installation groove, so that when the plunger is movably connected inside the cylinder, it has good air tightness, preventing gas leakage from causing the air pressure inside the working chamber to drop and affecting the pumping efficiency.

Description

A plunger pump oil pressure sealing device

technical field

The utility model relates to the technical field of plunger pumps, in particular to an oil pressure sealing device of a plunger pump.

Background technique

The plunger pump is an important device in the hydraulic system. It relies on the reciprocating movement of the plunger in the cylinder body to change the volume of the sealed working cavity to achieve oil absorption and oil pressure. The plunger pump has the advantages of high rated pressure, compact structure, high efficiency and convenient flow adjustment. Piston pumps are widely used in occasions where high pressure, large flow and flow need to be adjusted, such as hydraulic presses, construction machinery and ships. The internal sealing performance of the existing single-piston pump is poor, so that the sealing of the piston is not tight when the piston moves inside the cylinder body, and the reduction of air pressure reduces the efficiency of the pump oil and cannot effectively play the role of the piston pump.

Utility model content

In view of this, the present invention provides an oil pressure sealing device for a plunger pump to solve the above technical problems.

To achieve the above object, the utility model provides the following technical solutions:

An oil pressure sealing device for a plunger pump, comprising a cylinder body, a power mechanism is installed inside the cylinder body, a pump body is fixedly connected to one side of the cylinder body, a working chamber is opened inside the pump body, and the Both ends of the working chamber are fixedly installed with a first valve body and a second valve body.

Further, in order to provide power for the pump oil, as a preferred solution of the present utility model: the power mechanism includes a plunger whose piston is connected inside the cylinder body, and a transmission rod is fixedly connected to one side of the plunger, and the One end of the transmission rod is fixedly connected with a coupling, one side of the coupling is fixedly connected with an eccentric wheel, and the surface of the eccentric wheel is fixedly connected with an input shaft.

Further, in order to allow the pump to be pumped into the working chamber, as a preferred solution of the present invention: the first valve body includes a valve seat fixedly connected to the bottom of the working chamber, and an inlet valve is opened in the middle of the valve seat, The surface of the valve seat is fixedly connected with a fixing frame, the bottom of the fixing frame is fixedly connected with a first spring, one end of the first spring is fixedly connected with a first movable valve, and the first movable valve is inserted and connected to the inlet. inside the valve.

Further, in order to make the oil pump out of the working chamber, as a preferred solution of the present invention, the second valve body includes a spool fixedly connected to the top of the working chamber, and the bottom of the spool is provided with an outlet valve, so The inside of the spool is fixedly connected with a second spring, the bottom of the second spring is fixedly connected with a second movable valve, the second movable valve is inserted and connected inside the outlet valve, and the surface of the spool is surrounded by a row of rows. oil hole.

Further, in order to have better sealing performance, as a preferred solution of the present invention, the inner wall of the cylinder body is provided with a plurality of first installation grooves and second installation grooves, and the interior of the first installation groove is embedded. A first sealing washer is provided, and a second sealing washer is embedded in the second installation groove.

Further, in order to facilitate the oil in and out, as a preferred solution of the present invention, the top of the pump body is provided with an oil outlet hole, and the bottom of the pump body is provided with an oil inlet hole.

Further, in order to facilitate the operation of the plunger pump, as a preferred solution of the present invention, a connecting hole is formed on one side of the surface of the cylinder body, and the input shaft is inserted and connected inside the connecting hole.

Further, in order to keep the internal tightness of the working chamber, as a preferred solution of the present invention: the inner wall of the working chamber is provided with grooves at the bottom of the valve seat and the valve column, and the grooves are embedded in the inner wall. With sealing ring.

As can be seen from the above-mentioned technical solutions, the advantages of the present utility model are:

1. Through the provided power mechanism, the input shaft transmits the power to the eccentric wheel to drive the eccentric wheel to follow and rotate, and the rotation of the eccentric wheel drives the transmission rod fixedly connected at one end of the coupling to move, and the transmission rod drives the fixedly connected plunger on one side in the cylinder. The piston moves inside the body to provide power support for changing the pressure inside the working chamber, so that the first valve body and the second valve body work to pump oil.

2. Install the first sealing washer in the first installation groove and install the second sealing washer in the second installation groove through the first installation groove and the second installation groove in the inner wall of the cylinder, so that when the plunger moves When connected to the inside of the cylinder, it has good air tightness to prevent gas leakage from causing the air pressure inside the working chamber to drop and affect the pumping efficiency.

Description of drawings

The accompanying drawings constituting a part of the present application are used to provide further understanding of the present invention, and the schematic embodiments of the present invention and descriptions thereof are used to explain the present invention and do not constitute an improper limitation of the present invention.

Fig. 1 is the front view structure schematic diagram of the utility model.

FIG. 2 is a schematic diagram of the structure of the inner wall of the cylinder of the present invention.

Figure 3 is a schematic structural diagram of the power mechanism of the present invention.

FIG. 4 is a schematic structural diagram of the first valve body of the present invention.

FIG. 5 is a schematic structural diagram of the second valve body of the present invention.

FIG. 6 is a schematic diagram of the installation structure of the sealing ring of the present invention.

List of reference signs: 1, cylinder block; 2, power mechanism; 21, plunger; 22, transmission rod; 23, coupling; 24, eccentric; 25, input shaft; 3, pump body; 31, oil outlet hole; 32, oil inlet hole; 4, studio; 5, first valve body; 51, valve seat; 52, inlet valve; 53, fixing frame; 54, first spring; 55, first movable valve; 6, The second valve body; 61, the spool; 62, the outlet valve; 63, the second spring; 64, the second movable valve; 65, the oil drain hole; 7, the first installation groove; 8, the second installation groove; 9, 10. The second sealing washer; 11. The connecting hole; 12. The groove; 13. The sealing ring.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the embodiments and the accompanying drawings. Here, the exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but are not intended to limit the present invention.

1-5, the present utility model provides a technical solution: an oil pressure sealing device for a plunger pump, comprising a cylinder block 1, a power mechanism 2 is installed inside the cylinder block 1, and one side of the cylinder block 1 is fixedly connected There is a pump body 3 , a working chamber 4 is opened inside the pump body 3 , and a first valve body 5 and a second valve body 6 are fixedly installed at both ends of the working chamber 4 .

In this embodiment, the power mechanism 2 includes a plunger 21 whose piston is connected to the inside of the cylinder body 1 , a transmission rod 22 is fixedly connected to one side of the plunger 21 , and a coupling 23 is fixedly connected to one end of the transmission rod 22 . An eccentric wheel 24 is fixedly connected to one side of the actuator 23 , and an input shaft 25 is fixedly connected to the surface of the eccentric wheel 24 .

In specific use: the input shaft 25 transmits power to the eccentric wheel 24 and drives the eccentric wheel 24 to follow the rotation, the rotation of the eccentric wheel 24 drives the transmission rod 22 fixedly connected at one end of the coupling 23 to move, and the transmission rod 22 drives the column fixedly connected on one side. The plug 21 performs piston movement inside the cylinder body 1 to provide power support for changing the pressure inside the working chamber 4, so that the first valve body 5 and the second valve body 6 work to pump oil.

In this embodiment, the first valve body 5 includes a valve seat 51 fixedly connected to the bottom of the working chamber 4 , an inlet valve 52 is opened in the middle of the valve seat 51 , and a fixing frame 53 is fixedly connected to the surface of the valve seat 51 , and the fixing frame 53 The bottom of the valve is fixedly connected with a first spring 54 , one end of the first spring 54 is fixedly connected with a first movable valve 55 , and the first movable valve 55 is inserted and connected inside the inlet valve 52 .

Specific use: when the plunger 21 is pulled out, the pressure inside the working chamber 4 is reduced, the outlet valve 62 is closed, and the pressure is lower than the pressure of the inlet valve 52. At this time, the first spring 54 at the bottom of the fixing frame 53 drives the inlet valve 52 to work. The interior of the chamber 4 is moved to open, and at this time the inlet valve 52 moves out from the interior of the first movable valve 55 , so that the external oil is pumped into the interior of the working chamber 4 from the first movable valve 55 to complete the oil intake.

In this embodiment: the second valve body 6 includes a spool 61 fixedly connected to the top of the working chamber 4 , an outlet valve 62 is opened at the bottom of the spool 61 , and a second spring 63 is fixedly connected inside the spool 61 . A second movable valve 64 is fixedly connected to the bottom of the spring 63 , the second movable valve 64 is inserted and connected inside the outlet valve 62 , and an oil drain hole 65 is formed around the surface of the spool 61 .

Specific use: when the plunger 21 is on time, the pressure of the working chamber 4 rises and the inlet valve 52 is closed, which is higher than the pressure of the outlet valve 62. At this time, the second spring 63 inside the spool 61 drives the outlet valve 62 to open, and the interior of the working chamber 4 The oil enters the interior of the spool 61 through the second movable valve 64, and discharges the oil through the oil discharge hole 65 to complete the oil pumping function.

In this embodiment: the inner wall of the cylinder block 1 is provided with a plurality of first installation grooves 7 and second installation grooves 8, the first installation groove 7 is embedded with a first sealing washer 9, and the second installation groove 8 is embedded in the interior There is a second sealing gasket 10 .

In specific use: install the first sealing washer 9 in the first installation groove 7, and install the second sealing washer 10 in the second installation groove 8, so that the plunger 21 is movably connected to the inner chamber of the cylinder block 1, so that the cylinder The body 1 has good air tightness to prevent gas leakage from causing the air pressure inside the working chamber 4 to drop, affecting the pumping efficiency.

In this embodiment, the top of the pump body 3 is provided with an oil outlet hole 31 , and the bottom of the pump body 3 is provided with an oil inlet hole 32 .

In specific use: the oil inlet hole 32 at the bottom of the pump body 3 is convenient for pumping oil into the working chamber 4, and the oil inlet hole 32 at the top of the pump body 3 is convenient for pumping the oil inside the working chamber 4.

In this embodiment, a connecting hole 11 is opened on the surface side of the cylinder block 1 , and the input shaft 25 is inserted and connected inside the connecting hole 11 .

In specific use: the connecting hole 11 on one side of the cylinder block 1 facilitates the insertion and connection of the input shaft 25 outside the cylinder block 1, so that the input shaft 25 is connected with external power and the plunger 21 provides power for operation.

Example 2

Referring to FIG. 6 : in order to maintain the internal tightness of the working chamber 4, the distinguishing feature of this embodiment from Embodiment 1 is that the inner wall of the working chamber 4 is located at the bottom of the valve seat 51 and the valve column 61. There are grooves 12, Seal rings 13 are embedded in the grooves 12 .

In specific use: the groove 12 is opened at the bottom of the valve seat 51 and the valve column 61 and the oil sealing ring 13 is embedded, so that the connection between the interior of the working chamber 4 and the valve seat 51 and the valve column 61 has better sealing performance, preventing oil Leakage can affect pump oil efficiency.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, various modifications and changes may be made to the embodiments of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (6)

1. The utility model provides a plunger pump hydraulic pressure sealing device, includes cylinder body (1), its characterized in that: a power mechanism (2) is installed inside the cylinder body (1), one side of the cylinder body (1) is fixedly connected with a pump body (3), a working chamber (4) is formed inside the pump body (3), and a first valve body (5) and a second valve body (6) are fixedly installed at two ends of the working chamber (4);

the power mechanism (2) comprises a plunger (21) with a piston connected to the inside of the cylinder body (1), one side of the plunger (21) is fixedly connected with a transmission rod (22), one end of the transmission rod (22) is fixedly connected with a coupler (23), one side of the coupler (23) is fixedly connected with an eccentric wheel (24), and the surface of the eccentric wheel (24) is fixedly connected with an input shaft (25);

a plurality of first mounting grooves (7) and second mounting groove (8) have been seted up to the inner wall of cylinder body (1), the inside of first mounting groove (7) is inlayed and is equipped with first seal ring (9), the inside second seal ring (10) that is inlayed and is equipped with of second mounting groove (8).

2. The plunger pump hydraulic seal device according to claim 1, wherein: first valve body (5) include disk seat (51) of fixed connection in studio (4) bottom, import valve (52) have been seted up at the middle part of disk seat (51), the fixed surface of disk seat (51) is connected with mount (53), the first spring (54) of bottom fixedly connected with of mount (53), the first movable valve (55) of one end fixedly connected with of first spring (54), first movable valve (55) alternate and connect inside import valve (52).

3. The plunger pump hydraulic seal device according to claim 1, wherein: second valve body (6) include valve post (61) of fixed connection at studio (4) top, outlet valve (62) have been seted up to the bottom of valve post (61), inside fixedly connected with second spring (63) of valve post (61), the bottom fixedly connected with second movable valve (64) of second spring (63), second movable valve (64) alternate and connect inside outlet valve (62), oil drain hole (65) have been seted up to the surface encirclement of valve post (61).

4. The plunger pump hydraulic seal device according to claim 1, wherein: the oil outlet (31) is arranged at the top of the pump body (3), and the oil inlet (32) is arranged at the bottom of the pump body (3).

5. The plunger pump hydraulic seal device according to claim 1, wherein: connecting hole (11) have been seted up to surface one side of cylinder body (1), input shaft (25) alternate and connect inside connecting hole (11).

6. The plunger pump hydraulic seal device according to claim 1, wherein: the bottom that the inner wall of studio (4) is located disk seat (51) and valve post (61) all sets up recess (12), recess (12) inside all inlays and is equipped with sealing ring (13).

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