Pressure follow-up valve

Abstract

The utility model relates to the technical field of valves, and discloses a pressure follow-up valve which comprises a valve body shell and a pressure follow-up valve body, the pressure follow-up valve body is installed on the inner side of the valve body shell, the pressure follow-up valve body comprises a valve sleeve, a guide rod and a valve element, the valve element is sleeved on the outer side of the guide rod in a sliding mode, the guide rod is fixedly installed on the inner side of the valve sleeve, and the front end of the valve element is connected with a spring. One end of the spring is connected with the tail end of the guide rod, a follow-up valve inlet is formed in the front end of the valve sleeve, and a follow-up valve outlet is formed in the side wall of the valve sleeve. Compared with the prior art, the pressure follow-up valve has the advantages that the pressure follow-up valve is designed for replacing an existing traditional temperature control valve, the overall boundary dimension of the follow-up valve is completely consistent with that of the temperature control valve, the temperature control valve can be directly replaced, an original temperature control valve installation block does not need to be dismantled, and the cost is reduced. And the risk of overpressure and even burst of the radiator caused by the fact that lubricating oil with high pressure enters the radiator is avoided.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a pressure follower valve. Background Technology

[0002] A temperature control valve typically consists of a valve body, valve seat, valve core, temperature sensing element, and actuator. The temperature sensing element detects temperature changes and converts the temperature signal into a displacement or electrical signal. This signal drives the valve core to move via the actuator, thereby changing the valve's opening degree and regulating the flow rate of the medium.

[0003] However, traditional temperature control valves are prone to aging and damage during use. On the one hand, high-temperature lubricating oil enters the gearbox directly without cooling, causing the lubricating oil temperature to rise continuously, leading to the unit operating with limited power or even shutting down due to high temperature. On the other hand, high-pressure lubricating oil entering the radiator can easily cause the radiator to overpressure or even burst. In response, a pressure follow-up valve has been proposed to solve the above technical problems. Utility Model Content

[0004] I. Technical problems to be solved

[0005] The technical problem this invention aims to solve is that, in the use of traditional temperature control valves, high-temperature lubricating oil enters the gearbox directly without being cooled, causing the unit to operate with limited power or even shut down due to high temperature. Furthermore, the high-pressure lubricating oil entering the radiator can easily cause the radiator to overpressure or even burst.

[0006] II. Technical Solution

[0007] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a pressure follower valve, including a valve body shell and a pressure follower valve, wherein the pressure follower valve is installed inside the valve body shell, the pressure follower valve includes a valve sleeve, a guide rod and a valve core, the valve core is slidably sleeved on the outside of the guide rod, the guide rod is fixedly installed on the inside of the valve sleeve, a spring is connected to the front end of the valve core and the spring is sleeved on the outside of the valve core, one end of the spring is connected to the tail end of the guide rod, the front end of the valve sleeve is provided with a follower valve inlet, and the side wall of the valve sleeve is provided with a follower valve outlet.

[0008] As an improvement, a lubricating oil inlet is provided on the inner side of the valve body housing, and the follower valve inlet is connected to the lubricating oil inlet.

[0009] As an improvement, the valve body housing is provided with a radiator connection port and a gearbox connection port on the inner side, the lubricating oil inlet is connected to the radiator connection port, and the follower valve outlet is connected to the gearbox connection port.

[0010] As an improvement, the guide rod is connected to the valve sleeve by a fine thread.

[0011] As an improvement, the top of the valve core is tapered, and a mechanical seal is formed between it and the front end of the valve sleeve.

[0012] III. Beneficial Effects

[0013] The advantages of this utility model compared with the prior art are as follows: The pressure follower valve of this application is designed to replace the existing traditional temperature control valve. The overall size of the follower valve is completely consistent with that of the temperature control valve, and it can directly replace the temperature control valve without removing the original temperature control valve mounting block.

[0014] The lubricating oil does not require cooling. When the pressure reaches or exceeds the opening pressure of the follow-up valve, the follow-up valve opens, and a portion of the oil enters and passes through the follow-up valve to the gearbox. This avoids the risk of high-pressure lubricating oil entering the radiator and causing the radiator to overpressure or even burst. Attached Figure Description

[0015] Figure 1 This is a cross-sectional structural diagram of a pressure follower valve according to the present invention.

[0016] Figure 2 This is a schematic diagram of the outer structure of a pressure follower valve according to this utility model.

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of the valve body shell of a pressure follower valve according to this utility model.

[0018] Figure 4 This is a schematic diagram of the outer structure of the valve body shell of a pressure follower valve according to this utility model.

[0019] As shown in the figure: 1. Valve sleeve; 2. Follower valve inlet; 3. Follower valve outlet; 4. Guide rod; 5. Valve core; 6. Spring; 7. Valve body shell; 8. Lubricating oil inlet; 9. Radiator connection port; 10. Gearbox connection port. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0021] As attached Figure 1 and attached Figure 2As shown, a pressure follow-up valve includes a valve body shell 7 and a pressure follow-up valve. The pressure follow-up valve includes a valve sleeve 1, a guide rod 4 and a valve core 5. The valve core 5 is slidably sleeved on the outside of the guide rod 4. The guide rod 4 and the valve sleeve 1 are connected by a fine thread, and the guide rod 4 is fixedly installed on the inside of the valve sleeve 1. A spring 6 is connected to the front end of the valve core 5 and is sleeved on the outside of the valve core 5. One end of the spring 6 is connected to the tail end of the guide rod 4. The top end of the valve core 5 is conical and is sealed with the front end of the valve sleeve 1 by a line seal. The front end of the valve sleeve 1 is provided with a follow-up valve inlet 2, and the side wall of the valve sleeve 1 is provided with a follow-up valve outlet 3.

[0022] As attached Figure 3 and attached Figure 4 As shown, the pressure follower valve is installed inside the valve body housing 7. The valve body housing 7 has a lubricating oil inlet 8 inside. The follower valve inlet 2 is connected to the lubricating oil inlet 8. The valve body housing 7 has a radiator connection port 9 and a gearbox connection port 10 inside. The lubricating oil inlet 8 is connected to the radiator connection port 9. The follower valve outlet 3 is connected to the gearbox connection port 10.

[0023] With the above structure, when the pressure at the inlet 2 of the follower valve is less than the supporting force of the spring 6, the valve core 5 does not move, the lubricating oil does not enter the valve sleeve 1, and all the lubricating oil enters the radiator for cooling through the radiator connection port 9.

[0024] When the pressure at the inlet 2 of the follower valve is greater than the supporting force of the spring 6, the valve core 5 moves outside the guide rod 4, and the end moves away from the front end of the valve sleeve 1, opening the inlet 2 of the follower valve. The lubricating oil enters the interior of the valve sleeve 1 and flows out from the outlet 3 of the follower valve. The lubricating oil goes to the gearbox through the gearbox connection port 10, which can prevent high-pressure lubricating oil from entering the radiator and causing the radiator to overpressure or even burst.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art 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 appended claims and their equivalents.

[0027] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A pressure follow-up valve, comprising a valve body housing (7) and a pressure follow-up valve, characterized in that: The pressure follower valve is installed inside the valve body housing (7); The pressure follower valve includes a valve sleeve (1), a guide rod (4) and a valve core (5). The valve core (5) is slidably sleeved on the outside of the guide rod (4). The guide rod (4) is fixedly installed on the inside of the valve sleeve (1). A spring (6) is connected to the front end of the valve core (5), and the spring (6) is sleeved on the outside of the valve core (5). One end of the spring (6) is connected to the tail end of the guide rod (4). The front end of the valve sleeve (1) is provided with a follower valve inlet (2), and the side wall of the valve sleeve (1) is provided with a follower valve outlet (3).

2. The pressure follow-up valve according to claim 1, characterized in that: The valve body housing (7) has a lubricating oil inlet (8) inside, and the follower valve inlet (2) is connected to the lubricating oil inlet (8).

3. A pressure follow-up valve according to claim 2, characterized in that: The valve body housing (7) has a radiator connection port (9) and a gearbox connection port (10) on its inner side. The lubricating oil inlet (8) is connected to the radiator connection port (9), and the follower valve outlet (3) is connected to the gearbox connection port (10).

4. A pressure follow-up valve according to claim 1, characterized in that: The guide rod (4) is connected to the valve sleeve (1) by a fine thread.

5. A pressure follow-up valve according to claim 1, characterized in that: The top of the valve core (5) is tapered, and there is a mechanical seal between it and the front end of the valve sleeve (1).

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