Mechanical thermostat of engine

Abstract

The utility model discloses a mechanical thermostat of an engine, which relates to the technical field of thermostats and comprises a valve arranged on a guide rod; the buffer spring is sleeved on the guide rod, one end of the buffer spring is connected with the valve, and the other end of the buffer spring is connected with the lower bracket; the sealing ring is fixedly connected to the end, away from the temperature sensing assembly, of the lower support. The upper support is fixedly connected to the sealing ring, and the ejector rod penetrates through the upper support in a sliding mode; the valve cover is seamlessly arranged on the outer circumferential wall of the sealing cover of the temperature sensing assembly in a sleeving manner; wherein the valve cover is provided with a step, the step is provided with an annular first sealing layer, and the position, corresponding to the first sealing layer, of the sealing ring is provided with a second sealing layer; one ends of the guide plates are fixedly connected with the sealing ring, the other ends of the guide plates are fixedly connected with the lower support, and the parts, perpendicular to the steps of the valve deck, of the guide plates slidably penetrate through the valve deck; the device has the advantages of convenience in use, long service life and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of thermostats, in particular to a mechanical thermostat of an engine. Background Art

[0002] Thermostat is a valve that controls the flow path of coolant. It is an automatic temperature control device, usually containing a temperature sensing component, which opens or closes the flow of air, gas or liquid by thermal expansion or contraction.

[0003] For example, patent application number CN201520084660.2 discloses an automobile thermostat. The utility model of this patent has an EDPM layer coated on the lower side of the valve seat and / or the upper side of the valve cover. The EPDM material acts as a buffer seal in the middle, which can effectively solve the sharp knocks caused by the rigid contact between the valve cover and the valve seat, improve the service life of the thermostat, and enhance the sealing of the thermostat. When replacing the spiral spring made of memory alloy, push the pull rod to lift the support rod upward. When it is lifted to the upper part, turn the pull rod to match the horizontal position of the through groove. At this time, pull the body out of the valve body, open the folding door, and replace the spiral spring.

[0004] This patent in the prior art cushions the collision between the valve seat and the valve cover by providing EPDM material. However, this cushioning method in the prior art will still cause deformation of the valve seat and the valve cover after long-term collision. After deformation, gaps will appear during the matching process, which will cause leakage. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a mechanical thermostat of an engine, so as to solve the problem that the valve cover and the valve seat are easily deformed after long-term collision in the prior art described in the background technology.

[0006] To achieve the above purpose, the utility model provides the following technical solutions: a mechanical thermostat for an engine, comprising

[0007] A temperature sensing component has a guide rod at the lower end and a top rod at the upper end;

[0008] A lower bracket is arranged on the temperature sensing component;

[0009] A valve is arranged on the guide rod;

[0010] A buffer spring is sleeved on the guide rod, one end of the buffer spring is connected to the valve, and the other end is connected to the lower bracket;

[0011] A sealing ring, fixedly connected to an end of the lower bracket away from the temperature sensing component;

[0012] An upper bracket is fixedly connected to the sealing ring, and the push rod slides through the upper bracket;

[0013] A valve cover is seamlessly sleeved on the outer circumferential wall of the sealing cover of the temperature sensing component;

[0014] The valve cover has a step, a first annular sealing layer is arranged on the step, and a second sealing layer is arranged on the sealing ring at a position corresponding to the first sealing layer;

[0015] A plurality of guide plates are fixedly connected to the sealing ring at one end and to the lower bracket at the other end. The part of the guide plate perpendicular to the step of the valve cover slides through the valve cover.

[0016] Preferably, the guide plate is provided with a reinforcing plate, and the reinforcing plate is fixedly connected to the lower bracket.

[0017] Preferably, a positioning groove is provided on the valve cover at a position corresponding to the buffer spring of the temperature sensing component, and one end of the buffer spring is arranged in the positioning groove.

[0018] Preferably, the intersection surface of the first sealing layer and the second sealing layer is an arc-shaped surface.

[0019] The beneficial effects of adopting the above technical solution are:

[0020] The guide plate provided in the present application enables the valve cover to move along the guide plate during movement, so that after a collision, the valve cover can be prevented from deforming due to the presence of the guide plate. At the same time, the guide plate is fixedly connected to the sealing ring, which also limits the deformation of the sealing ring to a certain extent. This makes it difficult for the valve cover and the sealing ring to deform, thereby increasing their service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The utility model is a front view of a mechanical thermostat of an engine.

[0022] Figure 2 The utility model is a cross-sectional view of some components of a mechanical thermostat of an engine.

[0023] Among them: temperature sensing component 10, sealing cover 11, push rod 12, guide rod 13, valve cover 20, positioning groove 21, lower bracket 30, valve 40, buffer spring 41, sealing ring 50, upper bracket 51, first sealing layer 60, second sealing layer 61, guide plate 70, reinforcement plate 71, reset spring 80. DETAILED DESCRIPTION

[0024] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0025] like Figure 1-2 In the first embodiment, a mechanical thermostat of an engine includes

[0026] The temperature sensing component 10 has a guide rod 13 at the lower end and a top rod 12 at the upper end;

[0027] A lower bracket 30 is disposed on the temperature sensing component 10;

[0028] The valve 40 is arranged on the guide rod 13;

[0029] A buffer spring 41 is sleeved on the guide rod 13, one end of the buffer spring 41 is connected to the valve 40, and the other end is connected to the lower bracket 30;

[0030] The sealing ring 50 is fixedly connected to an end of the lower bracket 30 away from the temperature sensing component 10;

[0031] The upper bracket 51 is fixedly connected to the sealing ring 50, and the push rod 12 slides through the upper bracket 51;

[0032] The valve cover 20 is seamlessly sleeved on the outer circumferential wall of the sealing cover of the temperature sensing component 10;

[0033] The valve cover 20 has a step, on which a first annular sealing layer 60 is disposed, and the sealing ring 50 has a second sealing layer 61 at a position corresponding to the first sealing layer 60;

[0034] A plurality of guide plates 70 are fixedly connected to the sealing ring 50 at one end and to the lower bracket 30 at the other end. The portion of the guide plates 70 perpendicular to the step of the valve cover 20 slides through the valve cover 20 .

[0035] This embodiment is implemented as follows:

[0036] When the present application is in use, the sealing ring 50 is connected to the lower bracket 30 through the guide plate 70, and a part of the guide plate 70 passes through the valve cover 20. At the same time, the valve cover 20 can move along the guide plate 70. At this time, when the valve cover 20 and the sealing ring 50 collide many times and are about to be deformed, due to the existence of the guide plate 70, the guide plate 70 can limit the deformation of the valve cover 20 and the sealing ring 50, thereby increasing the service life of the valve cover 20 and the sealing ring 50.

[0037] The advantage of the present application over the prior art is that the sealing life is improved.

[0038] See also Figure 1 , 2 The guide plate 70 has a reinforcing plate 71 , and the reinforcing plate 71 is fixedly connected to the lower bracket 30 .

[0039] The reinforcement plate 71 can increase the strength of the guide plate 70 and prevent the guide plate 70 from being deformed.

[0040] See also Figure 1 , 2A positioning groove 21 is provided on the valve cover 20 at a position corresponding to the buffer spring 80 of the temperature sensing component 10 , and one end of the buffer spring 80 is disposed in the positioning groove 21 .

[0041] By providing a positioning groove 21 on the valve cover 20 , one end of the buffer spring 80 can be inserted therein, thereby improving the stability of the buffer spring 80 .

[0042] See also Figure 2 The intersection surface of the first sealing layer 60 and the second sealing layer 61 is an arc surface.

[0043] The first sealing layer 60 and the second sealing layer 61 are arranged to be arc-shaped surfaces to increase the contact area and improve the sealing performance.

[0044] The above are only preferred implementations of the present invention. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A mechanical thermostat for an engine, comprising: A temperature sensing component has a guide rod at the lower end and a top rod at the upper end; A lower bracket is arranged on the temperature sensing component; A valve is arranged on the guide rod; A buffer spring is sleeved on the guide rod, one end of the buffer spring is connected to the valve, and the other end is connected to the lower bracket; A sealing ring, fixedly connected to an end of the lower bracket away from the temperature sensing component; An upper bracket is fixedly connected to the sealing ring, and the push rod slides through the upper bracket; It is characterized in that A valve cover is seamlessly sleeved on the outer circumferential wall of the sealing cover of the temperature sensing component; The valve cover has a step, a first annular sealing layer is arranged on the step, and a second sealing layer is arranged on the sealing ring at a position corresponding to the first sealing layer; A plurality of guide plates are fixedly connected to the sealing ring at one end and to the lower bracket at the other end. The part of the guide plate perpendicular to the step of the valve cover slides through the valve cover.

2. The mechanical thermostat of an engine according to claim 1, characterized in that: The guide plate is provided with a reinforcing plate, and the reinforcing plate is fixedly connected to the lower bracket.

3. The mechanical thermostat of an engine according to claim 1, characterized in that: The valve cover is provided with a positioning groove at a position corresponding to the buffer spring of the temperature sensing component, and one end of the buffer spring is arranged in the positioning groove.

4. The mechanical thermostat of an engine according to claim 1, characterized in that: The intersection surface of the first sealing layer and the second sealing layer is an arc surface.

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