Pressure adjusting valve

Abstract

The pressure adjusting valve comprises a valve body with a cavity, the two ends of the valve body are sealed through cover bodies, the interior of the cavity is divided into a liquid outlet cavity and a liquid inlet cavity through a ring body, a valve element is installed in the ring body in a sliding mode so that the liquid outlet cavity can be communicated with the liquid inlet cavity, the valve body is communicated with a liquid inlet pipe and a liquid outlet pipe, the liquid outlet pipe is communicated with the liquid outlet cavity, and the liquid inlet pipe is communicated with the liquid inlet cavity. The groove body of the valve core can play a role in collecting impurity garbage in fuel oil, so that the impurities cannot be gathered on a sliding surface to reduce the abrasion caused by sliding; impurities can be gathered in the pressure action cavity, sliding abrasion of the valve element can be prevented from being affected, and meanwhile cleaning is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of pressure valves, and in particular to a pressure regulating valve. Background Art

[0002] At present, in the pressure regulating valves developed in the past, the outer wall of the valve core is provided with multiple layers of annular grooves as garbage grooves. During long-term use, when there are too many impurities and hard impurities in the fuel, a lot of debris may be stuck in the garbage groove, causing abnormal wear or jamming of the valve core, and thus resulting in insufficient pressure regulation capacity or even failure to regulate pressure normally. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a pressure regulating valve to solve the problem that the valve core is abnormally worn or stuck due to accumulation of debris in a garbage chute.

[0004] Based on the technical problems existing in the background technology, the present invention proposes a pressure regulating valve, including a valve body with a cavity, the two ends of the valve body are sealed by a cover body, the cavity is divided into a liquid outlet cavity and a liquid inlet cavity by a ring body, a valve core is slidably installed in the ring body to connect the liquid outlet cavity with the liquid inlet cavity, the valve body is connected with a liquid inlet pipe and a liquid outlet pipe, the liquid outlet pipe is connected to the liquid outlet cavity, and the liquid inlet pipe is connected to the liquid inlet cavity.

[0005] Preferably, the valve core comprises a valve cover, a connecting body and a cylinder body, and the valve cover and the cylinder body are respectively connected to two ends of the connecting body.

[0006] Preferably, an elastic member is provided in the liquid outlet cavity, and two ends of the elastic member respectively abut against a side of the valve cover away from the liquid inlet cavity and a cover body away from the liquid inlet cavity, and the cover body abutted by the elastic member is provided with an adjustment mechanism.

[0007] Preferably, the valve cover can slide relative to the ring body to seal the ring body on one side of the liquid outlet cavity.

[0008] Preferably, the cylinder body slides against the inner wall of the liquid inlet cavity, the cylinder body is located between the liquid inlet pipe and the cover body away from the liquid outlet cavity, a pressure action cavity is formed between the cylinder body and the cover body away from the liquid outlet cavity, and the outer wall of the cylinder body is provided with a groove body connecting the liquid inlet cavity and the pressure action cavity.

[0009] Preferably, the groove body is a spiral groove, and a projection angle of the groove body at the cover body away from the liquid outlet cavity is less than 45°.

[0010] Preferably, the angles formed between the liquid inlet pipe, the liquid outlet pipe and the axis of the valve body are acute angles, and the pipe openings of the liquid inlet pipe and the liquid outlet pipe are on the same horizontal line.

[0011] Compared with the prior art, the pressure regulating valve proposed by the present invention adopts the above technical solution and achieves the following technical effects:

[0012] The groove body of the valve core of the present invention can collect impurities and garbage in the fuel, so that the impurities will not gather on the sliding surface to reduce the wear caused by sliding; the debris in the present invention can be gathered in the pressure action chamber, which can avoid affecting the sliding wear of the valve core and is easy to clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the external structure of the present invention;

[0014] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0015] Figure 3 It is a schematic diagram of the valve core structure of the present invention;

[0016] Figure 4 This is a schematic diagram of the valve core structure of embodiment 2 of the present invention.

[0017] In the figure: 21, cavity; 2, valve body; 1, cover body; 22, ring body; 211, liquid outlet cavity; 212, liquid inlet cavity; 4, valve core; 31, liquid inlet pipe; 32, liquid outlet pipe; 41, valve cover; 42, connecting body; 43, cylinder body; 5, elastic member; 213, pressure action cavity; 431, tank body; 6, regulating mechanism. DETAILED DESCRIPTION

[0018] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0020] Embodiment 1

[0021] Please refer to Figure 1-Figure 4The present invention proposes a pressure regulating valve, including a valve body 2 with a cavity 21, both ends of the valve body 2 are sealed by a cover body 1, the cavity 21 is divided into a liquid outlet cavity 211 and a liquid inlet cavity 212 by a ring body 22, a valve core 4 is slidably installed in the ring body 22, and the valve core 4 can slide in the ring body 22 to realize the opening and closing of the ring body 22, thereby connecting or isolating the liquid inlet cavity 212 with the liquid outlet cavity 211. In the present application, the liquid outlet cavity 211 is located above the liquid inlet cavity 212, and the valve core 4 is slidably installed in the ring body 22 to realize the opening and closing of the ring body 22, thereby connecting or isolating the liquid inlet cavity 212 with the liquid outlet cavity 211. 211 is connected to the liquid inlet chamber 212, the valve body 2 is connected with a liquid inlet pipe 31 and a liquid outlet pipe 32, the liquid outlet pipe 32 is connected to the liquid outlet chamber 211, and the liquid inlet pipe 31 is connected to the liquid inlet chamber 212. When oil enters the liquid inlet chamber 212, the pressure of the oil is greater than the gravity of the valve core 4, which will lift the valve core 4, and the valve core 4 will move toward the liquid outlet chamber 211, and the liquid inlet chamber 212 will be connected with the liquid outlet chamber 211. When the pressure of the oil is less than the gravity of the valve core 4, the valve core 4 will drop to isolate the liquid outlet chamber 211 from the liquid inlet chamber 212.

[0022] In a specific implementation manner, refer to Figure 3 The valve core 4 includes a valve cover 41, a connecting body 42 and a cylinder body 43. The valve cover 41 and the cylinder body 43 are respectively connected to the two ends of the connecting body 42. In the valve core 4, the valve cover 41, the cylinder body 43 and the connecting body 42 are all cylindrical, and their circular areas are larger than the circular area of ​​the connecting body 42. Therefore, the connecting body 42 can slide freely in the above-mentioned ring body 22, and the circular area of ​​the valve cover 41 needs to be smaller than the circular area of ​​the cavity 21.

[0023] In a specific implementation manner, refer to Figure 2 , Figure 3 In order to be able to adjust the pressure when the oil is connected, an elastic member 5 is arranged in the liquid outlet chamber 211, and the two ends of the elastic member 5 respectively abut against the side of the valve cover 41 away from the liquid inlet chamber 212 and the cover body 1 away from the liquid inlet chamber 212. An adjustment mechanism 6 is arranged on the cylinder head 7 abutted by the elastic member 5, which can adjust the space at both ends of the elastic member 5 and then compress the elastic member 5. The movement of the valve core 4 needs to overcome the elastic force of the elastic member 5 and the gravity of the valve core 4 at the same time to connect the liquid inlet chamber 212 and the liquid outlet chamber 211.

[0024] In a specific implementation manner, refer to Figure 2 , Figure 3 The valve cover 41 can slide relative to the ring body 22 to seal the ring body 22 on one side of the liquid outlet cavity 211 .

[0025] In a specific implementation manner, refer to Figure 2 , Figure 3The cylinder body 43 slides against the inner wall of the liquid inlet cavity 212. The cylinder body 43 is located between the liquid inlet pipe 31 and the cover body 1 far away from the liquid outlet cavity 211. A pressure action cavity 213 is formed between the cylinder body 43 and the cover body 1 far away from the liquid outlet cavity 211. The outer wall of the cylinder body 43 is provided with a groove body 431 connecting the liquid inlet cavity 212 and the pressure action cavity 213. When the liquid inlet cavity 212 is filled with oil, the oil has a certain pressure, and the oil will squeeze the valve core 4 to move toward the liquid inlet cavity 212. At the same time, the oil will also be squeezed from the groove body 431 into the pressure action cavity 213. When the oil is squeezed into the pressure action cavity 213, it will clean the debris in the groove position; when the groove body 431 is blocked, the space in the pressure action cavity 213 will be enlarged due to the movement of the valve body 2 toward the liquid outlet cavity 211. The pressure in the pressure action cavity 213 is relatively small, and the debris in the groove position will be squeezed into the pressure action cavity 213 under the pressure of the oil.

[0026] Furthermore, when the pressure of the oil decreases, the valve core 4 begins to close, and the space of the pressure action chamber 213 begins to compress. The oil in the pressure action chamber 213 will be squeezed and discharged into the liquid inlet chamber 212, which can alleviate the stroke of the valve core 4 and achieve a damping effect.

[0027] In a specific implementation manner, refer to Figure 2 , Figure 3 The groove body 431 is a spiral groove, and the projection angle of the groove body 431 on the cover body 1 away from the liquid outlet cavity 211 is less than 45°. The spiral setting of the groove body 431 can allow the valve core 4 to rotate slightly when sliding, which can lubricate the inner wall of the valve body 2.

[0028] In a specific implementation manner, refer to Figure 2 , Figure 3 The angles between the liquid inlet pipe 31, the liquid outlet pipe 32 and the axis of the valve body 2 are acute, and the pipe openings of the liquid inlet pipe 31 and the liquid outlet pipe 32 are on the same horizontal line, which can save space for the entire device.

[0029] Embodiment 2

[0030] refer to Figure 4 A cylinder cover 7 can also be sleeved on the periphery of the cylinder body 43 so that the groove body 431 no longer contacts the inner wall of the cavity 21. When debris enters the groove, it will not cause misalignment friction with the valve body 2. At the same time, the debris will not cause large misalignment friction with the cylinder body 43, which can further protect the valve core 4.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pressure regulating valve, characterized in that: The invention comprises a valve body (2) having a cavity (21), wherein both ends of the valve body (2) are sealed by a cover body (1), and the cavity (21) is divided into a liquid outlet cavity (211) and a liquid inlet cavity (212) by a ring body (22), and a valve core (4) is slidably installed in the ring body (22) so that the liquid outlet cavity (211) and the liquid inlet cavity (212) are connected, and the valve body (2) is connected with a liquid inlet pipe (31) and a liquid outlet pipe (32), wherein the liquid outlet pipe (32) is connected with the liquid outlet cavity (211), and the liquid inlet pipe (31) is connected with the liquid inlet cavity (212).

2. The pressure regulating valve according to claim 1, characterized in that: The valve core (4) comprises a valve cover (41), a connecting body (42) and a cylinder body (43), and the valve cover (41) and the cylinder body (43) are respectively connected to two ends of the connecting body (42).

3. The pressure regulating valve according to claim 1, characterized in that: An elastic member (5) is provided in the liquid outlet cavity (211), and two ends of the elastic member (5) respectively abut against a side of the valve cover (41) away from the liquid inlet cavity (212) and a cover body (1) away from the liquid inlet cavity, and the cover body (1) abutted by the elastic member (5) is provided with an adjustment mechanism (6).

4. The pressure regulating valve according to claim 1, characterized in that: The valve cover (41) can slide relative to the ring body (22) to seal the side of the ring body (22) located at the liquid outlet cavity (211).

5. The pressure regulating valve according to claim 1, characterized in that: The cylinder body (43) slides in contact with the inner wall of the liquid inlet cavity (212); the cylinder body (43) is located between the liquid inlet pipe (31) and the cover body (1) away from the liquid outlet cavity (211); a pressure action cavity (213) is formed between the cylinder body (43) and the cover body (1) away from the liquid outlet cavity (211); and a groove body (431) is provided on the outer wall of the cylinder body (43) for connecting the liquid inlet cavity (212) and the pressure action cavity (213).

6. The pressure regulating valve according to claim 1, characterized in that: The groove body (431) is a spiral groove, and the projection angle of the groove body (431) on the cover body (1) away from the liquid outlet cavity (211) is less than 45°.

7. The pressure regulating valve according to claim 1, characterized in that: The angles between the liquid inlet pipe (31), the liquid outlet pipe (32) and the axis of the valve body (2) are acute angles, and the pipe openings of the liquid inlet pipe (31) and the liquid outlet pipe (32) are on the same horizontal line.

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