CN204458003U - Motor depassing unit - Google Patents

Abstract

The utility model discloses a degassing device for an engine, which comprises a joint connected with an upper water jacket of the engine, a connecting shell connected to the joint, and mutually connected air outlet passages are arranged on the joint and the connecting shell; There is a screw plug for deflation, and an exhaust cavity is arranged inside the screw plug, and several air outlet holes connected with the exhaust cavity are arranged on the circumference of the screw plug; there is a gasket between the screw plug and the connecting shell, and the gasket is There is a through hole communicating with the exhaust chamber and the air outlet channel, a one-way pressure valve is provided on the gasket corresponding to the through hole and located in the exhaust chamber, and an elastic element is arranged between the pressure valve and the screw plug. The degassing device is directly connected to the top of the water jacket, which can ensure the reliable degassing of the engine and the smoothness of the engine degassing, which solves the traditional problem of easy formation of air resistance and bubbles inside the water jacket; at the same time, it achieves a clean and clean engine. The purpose of aesthetics; through the one-way pressure valve, it is ensured that the outside air will not enter the water jacket when the engine is shut down.

Description

Degassing device for engine

technical field

The utility model belongs to the technical field of engines, in particular to an engine degassing device.

Background technique

As we all know, whether the degassing of the engine is smooth and whether there are air bubbles inside the water jacket will directly affect the cooling efficiency and function of the engine cooling system, and then affect the engine power and economy.

At this stage, the common way of degassing the engine is to weld a joint on the water jacket, connect it to the expansion tank through a long Ф8 degassing hose, and degas it outward through the pressure cap on the expansion tank. At the same time, the degassing The rubber hoses are scattered on the top of the engine, which affects the appearance, and the degassing hose pipeline is uneven, which is easy to form air resistance, affects the smoothness of engine degassing, and causes air bubbles inside the water jacket, which will directly affect the cooling efficiency of the engine cooling system And functions, and then affect the engine power and economy.

Another: The degassing rubber pipe is arranged in the engine compartment, and it is easy to crack when heated, which will cause the pressure drop of the cooling system and affect the performance of the engine.

Utility model content

The technical problem to be solved by the utility model is to provide a degassing device for an engine to solve the technical problems that the degassing rubber hose provided by the prior art is unattractive in layout and uneven in direction, easy to form air resistance and easy to crack.

In order to solve the above technical problems, the technical solution of the utility model is: the degassing device for the engine, including a joint connected with the upper water jacket of the engine, the joint is connected with a connection housing, and the joint and the connection housing are connected to each other. There are interconnected air outlet channels;

The end of the connecting housing far away from the joint is provided with a screw plug for deflation, and an exhaust cavity is arranged inside the screw plug, and several outlets communicating with the exhaust cavity are provided on the circumference of the screw plug. stomata;

A gasket is provided between the screw plug and the connection housing, and the gasket is provided with a through hole communicating with the exhaust cavity and the air outlet channel, corresponding to the through hole and located in the row. A one-way pressure valve is provided on the sealing pad in the air cavity, and an elastic element is provided between the pressure valve and the plug.

As an improvement, the pressure valve includes a gland corresponding to the position of the through hole, the gland is provided with an arc-shaped protrusion matching the through-hole, and the arc-shaped protrusion is provided with The exhaust holes are all connected with the through hole and the exhaust cavity; the gland on the side away from the sealing gasket is provided with a cover for covering the exhaust holes and preventing outside air from entering the air outlet passage. Floating cover.

As a further improvement, the gland is provided with a stop ring, the elastic element is sleeved on the outer ring of the stop ring, and the floating cover is constrained in the inner ring of the stop ring .

As a further improvement, the sealing pad is provided with a protrusion extending into the exhaust cavity; the extending direction of the through hole is consistent with the extending direction of the protrusion.

As a further improvement, a ventilation element is provided between the joint and the connection housing.

As a further improvement, the diameter of the through hole is smaller than the diameter of the air outlet channel; the diameter of the exhaust hole is smaller than the diameter of the through hole.

After adopting above-mentioned technical scheme, the beneficial effect of the utility model is:

Connect the degassing device to the engine water jacket. When filling coolant, the residual air inside the water jacket enters through the air outlet channel. When the pressure of the water jacket cooling system is lower than the set pressure, it passes through the exhaust hole on the gland and Push the floating cover to degas outwards. When the water jacket cooling system is higher than the set pressure, open the gland to degas outwards to ensure that the internal pressure of the water jacket is consistent with the pressure of the cooling system. The degassing device is directly connected to the top of the water jacket, which can ensure reliable degassing of the engine. Compared with the traditional one, no additional connection of degassing hose is required to ensure the smoothness of degassing of the engine, which solves the uneven direction of the degassing hose. , it is easy to form air resistance and cause air bubbles inside the water jacket, thereby ensuring the cooling efficiency and function of the engine cooling system, thereby ensuring the power and economy of the engine; and achieving the purpose of clean and beautiful engine; at the same time, through a single The directional pressure valve can ensure that the outside air will not enter the water jacket when the engine is stopped.

Since the pressure valve includes a gland and a floating cover that cooperate with each other, the unidirectionality of gas flow is realized, which not only further ensures the reliability of degassing, but also further ensures that the outside air will not enter the interior of the water jacket; at the same time, The structure is simple and easy to realize, and the manufacturing cost is low.

Since the elastic element is set on the outer ring of the limit retaining ring, the floating cover is constrained in the inner ring of the limit retaining ring, so that the elastic element is fixed by the limit retaining ring to ensure that the elastic element and the The stability of the gland fit; at the same time, through the limit retaining ring, the movement range and consistency of the floating cover are limited, thereby ensuring the stability of the gland and the floating cover, and thus ensuring the normal operation of the air outlet device .

Since a ventilating element is provided between the joint and the connection housing, the ventilating element can effectively release the air pressure, waterproof, oilproof and dustproof.

Description of drawings

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

Fig. 2 is a structural representation of another working state of the utility model;

Fig. 3 is a structural representation of the utility model in the state of engine shutdown;

In the figure: 1. Joint, 2. Breathable element, 3. Air outlet channel, 4. Connecting shell, 5. Gasket, 51. Protrusion, 52. Through hole, 6. Screw plug, 61. Air outlet, 62. Exhaust cavity, 7, gland, 71, limit retaining ring, 72, exhaust hole, 73, floating cover plate, 74, arc-shaped protrusion, 8, elastic element.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

For ease of description, the arrows in the drawings all indicate the flow direction of the gas.

As shown in Figure 1, the degassing device for the engine includes a joint 1 connected to the upper water jacket of the engine, the joint 1 is connected with a connection housing 4, and the joint 1 and the connection housing 4 are provided with an air outlet that communicates with each other. A channel 3, a ventilating element 2 is provided at the joint between the joint 1 and the connection housing 4, and the ventilating element 2 is preferably a ventilating membrane or other ventilating parts;

The end of the connection housing 4 away from the joint 1 is provided with a screw plug 6 for deflation, and an exhaust cavity 62 is arranged inside the screw plug 6 , and several outlets communicating with the exhaust cavity 62 are provided on the circumference of the screw plug 6 . An air hole 61; a gasket 5 is provided between the screw plug 6 and the connection housing 4, and the gasket 5 is provided with a protrusion 51 extending into the exhaust chamber 62, and the gasket 5 at the position corresponding to the protrusion 51 There is a through hole 52 communicating with the exhaust chamber 62 and the air outlet channel 3, and a one-way pressure valve is provided on the sealing gasket 5 corresponding to the through hole 52 and located in the exhaust chamber 62. Between the pressure valve and the screw plug 6 An elastic element 8 is provided, and the elastic element 8 is preferably a compression spring, or other elastic elements that can be realized by those skilled in the art.

The pressure valve includes a gland 7 corresponding to the position of the through hole 52. The gland 7 is provided with an arc-shaped protrusion 74 matching the through hole 52. The arc-shaped protrusion 74 is provided with a 52 and the exhaust hole 72 communicating with the exhaust chamber 62; the gland 7 on the side away from the sealing gasket 5 is provided with a limit retaining ring 71, and the elastic element 8 is sleeved on the outer ring of the limit retaining ring 71. A floating cover 73 for covering the exhaust hole 72 and preventing external air from entering the air outlet channel 3 is constrained in the inner ring of the retaining ring 71 .

The diameter of the through hole 52 is smaller than the diameter of the outlet channel 3 ; the diameter of the exhaust hole 72 is smaller than the diameter of the through hole 52 .

In practical application, the degassing device is connected to the engine water jacket. When the coolant is added, the residual air inside the water jacket enters through the air outlet channel 3. When the pressure of the water jacket cooling system is lower than the set pressure, it passes through the gland 7 and pushes the floating cover plate 73 into the exhaust chamber 62, and degasses outward through the air outlet 61 (as shown in Figure 1). When the water jacket cooling system is higher than the set pressure, the top opening pressure The cover 7 enters the exhaust cavity 62 and degasses outward through the air outlet 61 (as shown in FIG. 2 ), ensuring that the internal pressure of the water jacket is consistent with the pressure of the cooling system. The degassing device is directly connected to the top of the water jacket, which can ensure reliable degassing of the engine. Compared with the traditional one, no additional connection of degassing hose is required to ensure the smoothness of degassing of the engine, which solves the uneven direction of the degassing hose. , it is easy to form air resistance and cause air bubbles inside the water jacket, thereby ensuring the cooling efficiency and function of the engine cooling system, thereby ensuring the power and economy of the engine; and achieving the purpose of clean and beautiful engine; at the same time, through a single Directional pressure valve can ensure that outside air will not enter the water jacket when the engine is stopped (as shown in Figure 3).

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (6)

1. motor depassing unit, it is characterized in that, comprise the joint (1) be connected with motor upper water sleeve, described joint (1) is connected with and connects housing (4), described joint (1) and described connection housing (4) are equipped with the outlet passageway (3) be interconnected;

Described connection housing (4) is provided with the plug screw (6) for exitting away from one end of described joint (1), be provided with exhaust cavity (62) in described plug screw (6), the circumference of described plug screw (6) is provided with the air outlet hole (61) that some and described exhaust cavity (62) is communicated with;

Described plug screw (6) is provided with sealing gasket (5) with described connection between housing (4), described sealing gasket (5) is provided with the through hole (52) being communicated with described exhaust cavity (62) and described outlet passageway (3), with described through hole (52) corresponding position and the described sealing gasket (5) being positioned at described exhaust cavity (62) is provided with one-way pressure valve, between described pressure valve and described plug screw (6), be provided with elastic element (8).

2. motor depassing unit according to claim 1, it is characterized in that, described pressure valve comprises the gland (7) that arrange corresponding to described through hole (52) position, described gland (7) is provided with an arc convex (74) suitable with described through hole (52), and described arc convex (74) is provided with the exhaust port (72) be all communicated with described exhaust cavity (62) with described through hole (52); Described gland (7) away from described sealing gasket (5) side is provided with for covering described exhaust port (72) and preventing ambient air from entering the floating cover (73) of described outlet passageway (3).

3. motor depassing unit according to claim 2, it is characterized in that, described gland (7) is provided with spacing back-up ring (71), described elastic element (8) is sleeved on the outer ring of described spacing back-up ring (71), and described floating cover (73) is constrained in the inner ring of described spacing back-up ring (71).

4. the motor depassing unit according to the arbitrary claim of claim 1-3, is characterized in that, described sealing gasket (5) is provided with the projection (51) extended in described exhaust cavity (62); The bearing of trend of described through hole (52) is consistent with the bearing of trend of described projection (51).

5. motor depassing unit according to claim 4, is characterized in that, described joint (1) is provided with ventilated element (2) with described connection between housing (4).

6. motor depassing unit according to claim 4, is characterized in that, the diameter of described through hole (52) is less than the diameter of described outlet passageway (3); The diameter of described exhaust port (72) is less than the diameter of described through hole (52).