CN206129353U - Centrifugal rotor strains device with two -way trip valve - Google Patents

Abstract

The utility model relates to a centrifugal rotor strains device with two -way trip valve, including upper cover, down casing and rotor, the upper cover passes through bolt and inferior valve body coupling, and it is internal with the inferior valve that the rotor is fixed in the upper cover through the pivot, and lower casing bottom is equipped with into oil pipe way, is equipped with two -way trip valve in entering the oil pipe way, and two -way trip valve is equipped with the spring of controlling two -way trip valve. Compared with the prior art, the utility model discloses a set up two -way trip valve, through the stroke size that the spring comes the control valve, guarantee to get into flow pressure that the rotor strained and move in interval certain, when the flow is less, do not occupy the machine oil of main oil gallery to it is lubricated to guarantee that the main oil gallery has sufficient machine oil to go, has protected the engine, when the flow is great, restricted too big flow, make the rotor strain and do not strikeed, protected inside rotor.

Description

A centrifugal rotor filter device with a two-way cut-off valve

technical field

The utility model relates to a centrifugal rotor filter device, in particular to a centrifugal rotor filter device with a bidirectional cut-off valve.

Background technique

The centrifugal rotor filter is a filter device that uses the centrifugal force generated by the high-speed rotation of the rotor to make the impurities in the oil adhere to the inner wall of the rotor and separate the impurities from the oil. The oil pump draws oil from the oil tank and sends it to the centrifugal rotor filter, and the oil is sprayed out from the rotor nozzle to generate a reaction force to push the rotor to rotate. Normally, the rotor filter needs a shut-off valve to control the flow of oil flowing into the rotor filter. The shut-off valve opens when the oil reaches a certain pressure, but it cannot control the oil flow after opening. When the oil pressure is too high, the rotor will be damaged. , What's more serious is that due to the excessive oil flow in the main oil passage of the engine, the engine does not have enough oil to lubricate, causing engine wear. Especially for domestic engines, there will be cold start pressure phenomenon, and the use of the existing cut-off valve will easily cause damage to the internal rotor of the rotor filter.

Utility model content

The purpose of this utility model is to provide a centrifugal rotor filter device with a two-way cut-off valve that can control the oil pressure and flow in order to solve the above problems.

The purpose of this utility model is achieved through the following technical solutions:

A centrifugal rotor filter device with a two-way cut-off valve, comprising an upper cover, a lower casing and a rotor, the upper cover is connected to the lower casing through bolts, and the rotor is fixed in the upper cover and the lower casing through a rotating shaft , the bottom of the lower casing is provided with an oil inlet pipeline, and a two-way shut-off valve is arranged in the described oil inlet pipeline, and a spring for controlling the two-way shut-off valve is provided in the described two-way shut-off valve, and springs of different elasticity can be set to control The flow and pressure of the oil inlet.

The two-way cut-off valve is a stepped rod-shaped structure, including a large round rod at the front and a small round rod at the rear.

The spring is sleeved on the small round rod of the two-way shut-off valve. On the one hand, the long rod and the small round rod effectively protect the spring from being damaged by excessive pressure. On the other hand, the radial positioning of the spring can be ensured. Prevent misalignment from affecting the working pressure range of the valve.

The length ratio of the large round rod to the small round rod is 1:1-1.5, and the diameter ratio of the large round rod to the small round rod is 2-2.5:1.

The big round rod is provided with a channel along the axial direction, and the big round rod is provided with a circular groove along the circumferential direction. Considering the influence of flow resistance, the circular groove is provided with at least two round holes, and the number of round holes can be Set according to specific flow and pressure.

The ratio of the diameter of the channel to the diameter of the large round rod is 2:3-4, and the length of the channel is shorter than the length of the large round rod.

A plug is installed at the entrance of the oil inlet pipeline.

When the utility model is in use, the engine starts, and the pressure increases as the oil flow increases, and the two-way cut-off valve is pushed into the oil inlet pipeline by the oil. When the pressure reaches a certain value, the round hole on the two-way cut-off valve and the rotor passage The inlet is aligned, the valve is just opened, the oil enters the inside of the rotor, and the rotor is driven to rotate. The centrifugal force generated by the rotation of the rotor makes the impurities in the oil adhere to the inner wall of the rotor, and the filtered oil is sent to the engine oil tank through the oil return port; but if the oil flow continues When the two-way cut-off valve is enlarged, the two-way cut-off valve moves further into the oil inlet pipe. The round hole on the two-way cut-off valve is staggered from the entrance of the rotor passage, and the valve is closed. At this time, almost no oil flows into the rotor filter, and only oil with a suitable flow pressure can enter the rotor. In order to achieve the role of protecting the rotor filter. The oil flow and pressure range can be designed by setting springs with different elasticity to ensure that the oil entering the rotor is within the design range.

Compared with the prior art, the utility model does not occupy the oil in the main oil passage by setting a two-way cut-off valve when the flow rate is small, especially during cold start, so as to ensure that the main oil passage has enough oil to lubricate and protect the engine. ; When the flow rate is large, the excessive flow rate is limited, so that the rotor filter is not impacted and the internal rotor is protected. This device has a wide range of applications. For various types of engines, it can operate normally regardless of the flow pressure of the oil pump. The two-way valve can ensure that the flow pressure entering the rotor filter runs within a certain range, and the stroke of the valve is controlled by the spring. .

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the schematic diagram of two-way shut-off valve;

Fig. 3 is a cross-sectional view of a two-way shut-off valve;

Fig. 4 is the working schematic diagram of engine oil pressure hour;

Fig. 5 is a working schematic diagram when the oil pressure is high;

In the figure: 1-upper cover; 2-bolt; 3-lower housing; 4-rotor; 5-rotating shaft; 6-plug; 7-two-way cut-off valve; 8-spring; Rod; 72-small round rod; 73-hole; 74-ring groove; 75-round hole.

detailed description

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Example 1

A centrifugal rotor filter device with a two-way cut-off valve, as shown in Figure 1-5, includes an upper cover 1, a lower housing 3 and a rotor 4, the upper cover 1 is connected to the lower housing 3 through bolts 2, and the rotor 4 passes through The rotating shaft 5 is fixed in the upper cover 1 and the lower casing 3, the bottom of the lower casing 3 is provided with an oil inlet pipeline 9, a plug 6 is installed at the entrance of the oil inlet pipeline 9, and a two-way shut-off valve 7 is arranged in the oil inlet pipeline 9, The two-way shut-off valve 7 is provided with a spring 8 to control the two-way shut-off valve 7. The two-way shut-off valve 7 is a stepped rod-shaped structure, including a large round bar 71 at the front and a small round bar 72 at the rear. The spring 8 is sleeved on the small round bar of the two-way shut-off valve. On the round bar 72, the small round bar 72 of the long rod effectively protects the spring 8, preventing the spring from being damaged due to excessive pressure. The length ratio of the large round rod 71 to the small round rod 72 can be 1:1-1.5, and the present embodiment is 1:1, and the diameter ratio of the large round rod 71 to the small round rod 72 can be 2-2.5:1, and the present embodiment is 2.5:1. Big round rod 71 is provided with tunnel 73 axially, and big round rod 71 is provided with annular groove 74 along circumferential direction, and circular groove 74 is provided with four round holes 75, and the diameter of tunnel 73 and the diameter of big round rod 71 The ratio can be 2:3-4, in this embodiment it is 2:3.6, and the length of the tunnel 73 is less than the length of the large round rod 71 .

When in use, the engine starts, and as the oil flow increases, the pressure increases, and the two-way shut-off valve 7 is pushed into the oil inlet pipe 9 by the oil. When the pressure reaches a certain value, the circular hole 75 on the two-way shut-off valve 7 and the rotor The channel inlets are aligned, the valve is just opened, the oil enters the inside of the rotor 4, and the rotor 4 is driven to rotate. The centrifugal force generated by the rotation of the rotor 4 makes the impurities in the oil adhere to the inner wall of the rotor 4, and the filtered oil is sent to the engine oil tank through the oil return port; However, if the oil flow continues to increase, the two-way shut-off valve 7 will move further into the oil inlet pipe 9. At this time, the circular hole 75 on the two-way shut-off valve 7 will be staggered from the entrance of the rotor passage, and the valve will be closed. At this time, there is almost no oil flow. Into the rotor filter, so only the oil with proper flow pressure can enter the rotor, so as to protect the rotor filter.

Claims (7)

1. a kind of centrifugal rotor with bidirectional cutting valve filters device, including upper lid (1), lower house (3) and rotor (4), described Upper lid (1) be connected with lower house (3) by bolt (2), described rotor (4) by rotating shaft (5) be fixed on Shang Gai (1) and under In housing (3), described lower house (3) bottom is provided with in-line (9), it is characterised in that set in described in-line (9) There is bidirectional cutting valve (7), described bidirectional cutting valve (7) is provided with the spring (8) of control bidirectional cutting valve (7).

2. a kind of centrifugal rotor with bidirectional cutting valve according to claim 1 filters device, it is characterised in that described Bidirectional cutting valve (7) is ladder club shaped structure, including the little pole (72) at anterior big pole (71) and rear portion.

3. a kind of centrifugal rotor with bidirectional cutting valve according to claim 2 filters device, it is characterised in that described Spring is set on the little pole (72) of bidirectional cutting valve (7).

4. a kind of centrifugal rotor with bidirectional cutting valve according to claim 2 filters device, it is characterised in that described Big pole (71) is 1 with the length ratio of little pole (72)：1-1.5, big pole (71) is 2- with the diameter ratio of little pole (72) 2.5：1.

5. a kind of centrifugal rotor with bidirectional cutting valve according to claim 3 filters device, it is characterised in that described Big pole (71) is provided with vertically duct (73), and on big pole (71) ring groove (74), ring groove are along the circumferential direction provided with It is provided with least two circular holes (75).

6. a kind of centrifugal rotor with bidirectional cutting valve according to claim 5 filters device, it is characterised in that the hole The diameter in road (73) is 2 with the diameter ratio of big pole (71)：3-4, the length of duct (73) is less than the length of big pole (71).

7. a kind of centrifugal rotor with bidirectional cutting valve according to claim 1 filters device, it is characterised in that described In-line (9) porch is provided with plug (6).