Integrated one-way valve structure

Abstract

The utility model discloses an integrated one-way valve structure, which relates to the field of one-way valves, aims to solve the problems that the one-way valve is inconvenient to install and low in integration degree, and adopts the technical scheme that the integrated one-way valve structure comprises an upper shell and a valve assembly which are connected in a clamping manner; the valve assembly comprises a valve cover, a valve seat and a valve rod, the valve cover and the valve seat are connected through a buckle, the valve rod is arranged in the valve cavity, the two ends of the valve rod protrude out of an oil outlet of the valve cover and an oil inlet of the valve seat respectively, a flange and a sealing valve are further arranged on the valve rod, a spring is further arranged between the flange and the valve cover, and the sealing valve is located below the flange. And the position of the oil inlet corresponds to that of the oil inlet on the valve seat. The upper shell and the valve assembly are connected in a clamped mode, and the valve deck and the valve seat are connected in a clamped mode, so that workers can disassemble and assemble the equipment conveniently. The bowl-shaped rubber part is adopted as a sealing valve and matched with the valve rod to achieve the function of the one-way valve, the equipment integration degree is improved, meanwhile, the structure of the one-way valve is simplified, and cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of check valves, in particular to an integrated check valve structure. Background Technique

[0002] In the dual-pump system of a gearbox, although the check valve is a small component, it plays a crucial role in the stability of the hydraulic system.

[0003] For the mechanical pump + electronic pump system of the gearbox, there are various complex working conditions in the hydraulic system, such as the mechanical pump and the electronic pump working simultaneously, the mechanical pump working alone, and the electronic pump working alone. It is necessary to arrange a check valve. The check valve plays a very important role in the stable operation of the system. Since the electronic pump needs to independently maintain the system oil pressure, without a check valve, some oil will leak back to the low-pressure side through the mechanical pump oil circuit, resulting in: 1) The electronic pump needs higher power to compensate for the leakage, increasing energy consumption; 2) When the mode is switched to the electronic pump, the response speed is slow, the clutch oil pressure is unstable, and obvious jerks occur (especially in low-speed working conditions); 3) The outputs of the mechanical pump and the electronic pump will interfere with each other.

[0004] In the existing gearbox dual-pump system, the check valve is mostly arranged between the suction filter and the oil pump, which has the disadvantages of low integration level, complex structure, high cost, and inconvenient installation. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is to overcome the existing defects and provide an integrated check valve structure, which can effectively solve the problems in the background technique.

[0006] To achieve the above purpose, the utility model discloses an integrated check valve structure, and the technical solution adopted is that it includes an upper housing and a valve assembly, and the upper housing is snap-connected with the valve assembly;

[0007] The valve assembly includes a valve cover, a valve seat and a valve stem. The valve cover and the valve seat are connected by a buckle. The valve cover and the valve seat enclose a valve cavity. An oil outlet and an oil inlet are respectively arranged on the valve cover and the valve seat;

[0008] The valve stem is arranged in the valve cavity, and both ends respectively protrude from the oil outlet of the valve cover and the oil inlet of the valve seat. A flange and a sealing valve are also arranged on the valve stem. A spring is also arranged between the flange and the valve cover. The sealing valve is located below the flange and corresponds to the position of the oil inlet on the valve seat.

[0009] As a preferred technical solution of the present utility model, convex ribs are provided on the facing surfaces of the valve cover and the valve seat. Grooves adapted to the convex ribs are provided on the valve seat, and four notches are further formed on the valve seat, which are deformed during installation. The upper shell and the valve assembly, as well as the valve cover and the valve seat, are both connected by snap fit, facilitating the disassembly and installation of the equipment by the staff.

[0010] As a preferred technical solution of the present utility model, rib plates are arranged on the upper plane of the flange. There are four groups of rib plates for limiting the spring.

[0011] As a preferred technical solution of the present utility model, a protrusion is further provided on the valve rod. The protrusion is an inverted triangle and is located below the flange. The protrusion, the flange and the valve rod form a clamping groove structure, and the sealing valve is installed in the clamping groove structure.

[0012] As a preferred technical solution of the present utility model, the sealing valve adopts a bowl-shaped rubber part. By using the bowl-shaped rubber part as the sealing valve and cooperating with the valve rod to realize the function of the one-way valve, the integration degree of the equipment is improved, the structure of the one-way valve is simplified, and the cost is reduced.

[0013] As a preferred technical solution of the present utility model, two clamping grooves are provided on the upper shell and are arranged on the left and right sides of the upper shell. Claw jaws corresponding to the positions of the clamping grooves are formed on the valve seat of the valve assembly, and an O-ring for sealing is further provided on the valve seat.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: The upper shell and the valve assembly, as well as the valve cover and the valve seat, are both connected by snap fit, facilitating the disassembly and installation of the equipment by the staff; by using the bowl-shaped rubber part as the sealing valve and cooperating with the valve rod to realize the function of the one-way valve, the integration degree of the equipment is improved, the structure of the one-way valve is simplified, and the cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 is a structural diagram of the upper shell of the present utility model;

[0017] Figure 3 is a structural diagram of the valve assembly of the present utility model.

[0018] In the figure: 1. Upper shell; 1-1. Clamping groove;

[0019] 2. Valve assembly; 2-1. Valve cover; 2-2. Valve seat; 2-3. O-ring; 2-4. Spring; 2-5. Sealing valve; 2-6. Valve rod. Specific Embodiment

[0020] Next, in combination with the accompanying drawings in the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the protection scope of the present utility model. Embodiment 1

[0021] As Figures 1 to 3 shown, the present utility model discloses an integrated one-way valve structure. The technical solution adopted is that it includes an upper housing 1 and a valve assembly 2, and the upper housing 1 is snap-connected to the valve assembly 2;

[0022] The upper housing 1 is provided with two groups of card slots 1-1, which are arranged on the left and right sides of the upper housing 1. The valve seat 2-2 of the valve assembly 2 is provided with claws corresponding to the positions of the card slots 1-1, and the valve seat 2-2 is also provided with an O-ring 2-3 for sealing.

[0023] During installation, the valve assembly 2 is pushed in along the snap-fit direction. The claws on the valve seat 2-2 enter the card slots 1-1 of the upper housing 1 to play a role in limiting and fixing, and are sealed by the O-ring 2-3 to assemble an integrated one-way valve.

[0024] The valve assembly 2 includes a valve cover 2-1, a valve seat 2-2 and a valve stem 2-6. The valve cover 2-1 and the valve seat 2-2 are connected by snaps. The opposite surfaces of the valve cover 2-1 and the valve seat 2-2 are provided with convex ribs. The valve seat 2-2 is provided with grooves adapted to the convex ribs, and the valve seat 2-2 is also provided with four notches that are deformed during installation.

[0025] The valve cover 2-1 and the valve seat 2-2 enclose a valve cavity. The valve cover 2-1 and the valve seat 2-2 are respectively provided with an oil outlet and an oil inlet; the diameter of the oil outlet is 5 mm, and the diameter of the oil inlet is 4 mm;

[0026] The valve stem 2-6 is arranged in the valve cavity, and both ends respectively protrude from the oil outlet of the valve cover 2-1 and the oil inlet of the valve seat 2-2. The upper rod diameter of the valve stem 2-6 is 4.5 mm, and the lower rod diameter is 3.5 mm, which plays a role in preventing misassembly.

[0027] A flange and a sealing valve 2-5 are also provided on the valve stem 2-6. The diameter of the flange is 22 mm, and a spring 2-4 is also provided between the flange and the valve cover 2-1. The sealing valve 2-5 is located below the flange and corresponds to the position of the oil inlet on the valve seat 2-2.

[0028] Reinforcing plates are arranged on the upper plane of the flange. The diameter of the reinforcing plates is 13 mm. There are four groups of reinforcing plates, which can limit the radial direction of the spring 2-4.

[0029] A protrusion is also provided on the valve stem 2-6. The protrusion is an inverted triangle with a large-end diameter of 6 mm and is located below the flange. The protrusion, the flange and the valve stem 2-6 form a clamping groove structure. The diameter of the valve stem 2-6 at the clamping groove structure is 4 mm. The sealing valve 2-5 is installed in the clamping groove structure.

[0030] The sealing valve 2-5 is made of a bowl-shaped rubber part, which has good deformation ability. There is a hole with a diameter of 3.8 mm in the middle. The bowl-shaped position is used to seal with the oil inlet plane of the valve seat 2-2.

[0031] Place the sealing valve 2-5 with its plane facing up and push it along the direction of the inverted triangle of the valve stem 2-6, so that the plane of the sealing valve 2-5 contacts the bottom surface of the flange of the valve stem 2-6. The diameter of the flange is 22 mm, and it completely enters the clamping groove structure of the valve stem 2-6.

[0032] Comparison of the three working states of this equipment: 1) When the mechanical pump works alone, the electronic pump port of the suction filter is closed under the action of the one-way valve, which will not interfere with the electronic pump system, and the oil cannot leak back to the low-pressure side through the mechanical pump oil circuit; 2) When the electronic pump works alone, the oil at the rear end of the one-way valve of the electronic port is in a full state, the one-way valve of the electronic pump port of the suction filter is opened, and the electronic pump system quickly responds to establish oil, providing power for the rapid and stable execution of the hydraulic system; 3) When the mechanical pump and the electronic pump work together, it is the extreme working condition such as the system's rapid acceleration. The oil pressure is optimal and the operation is smooth.

[0033] The working principle of the present utility model: During assembly, after installing the sealing valve 2-5 on the valve stem 2-6, install the spring 2-4, and make the upper end of the valve stem 2-6 with a diameter of 4.5 mm pass through the oil outlet hole with a diameter of 5 mm on the valve cover 2-1, and the lower end with a diameter of 3.5 mm pass through the oil inlet hole with a diameter of 4 mm on the valve seat 2-2.

[0034] Reinforcing ribs with a fillet radius of 0.5 mm are arranged on the valve cover 2-1. Grooves with a fillet radius of 0.75 mm are arranged on the valve seat 2-2 and there are four notches for deformation during assembly. The reinforcing ribs of the valve cover 2-1 and the grooves of the valve seat 2-2 are assembled, the spring 2-4 is compressed, and then the O-ring 2-3 is assembled.

[0035] Push the valve assembly 2 along the snap-fit direction. The claws on the valve seat 2-2 enter the card slot 1-1 of the upper housing 1 to play a role in limiting and fixing, and are sealed by the O-ring 2-3 to assemble an integrated one-way valve.

[0036] The circuit and mechanical connections involved in the present utility model are common means adopted by those skilled in the art, and technical inspiration can be obtained through a limited number of tests, which belongs to common general knowledge.

[0037] The components not described in detail in this article are prior art.

[0038] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An integrated check valve structure, characterized in that: It includes an upper housing (1) and a valve assembly (2), and the upper housing (1) is snap-connected to the valve assembly (2). The valve assembly (2) includes a valve cover (2-1), a valve seat (2-2) and a valve stem (2-6). The valve cover (2-1) is snap-connected to the valve seat (2-2). The valve cover (2-1) and the valve seat (2-2) enclose a valve cavity. An oil outlet and an oil inlet are respectively provided on the valve cover (2-1) and the valve seat (2-2). The valve stem (2-6) is arranged in the valve cavity, and both ends respectively protrude from the oil outlet of the valve cover (2-1) and the oil inlet of the valve seat (2-2). A flange and a sealing valve (2-5) are further provided on the valve stem (2-6). A spring (2-4) is further provided between the flange and the valve cover (2-1). The sealing valve (2-5) is located below the flange and corresponds to the position of the oil inlet on the valve seat (2-2).

2. The integrated one-way valve structure according to claim 1, wherein: Raised ribs are provided on the facing surfaces of the valve cover (2-1) and the valve seat (2-2). A groove adapted to the raised ribs is provided on the valve seat (2-2), and four notches are further provided on the valve seat (2-2) to cause deformation during installation.

3. An integrated check valve structure according to claim 1, characterized in that: Reinforcing plates are arranged on the upper plane of the flange. There are four groups of the reinforcing plates for limiting the spring (2-4).

4. An integrated check valve structure according to claim 1, characterized in that: A protrusion is further provided on the valve stem (2-6). The protrusion is an inverted triangle and is located below the flange. The protrusion, the flange and the valve stem (2-6) form a clamping groove structure, and the sealing valve (2-5) is installed in the clamping groove structure.

5. An integrated check valve structure according to claim 1 or 4, characterized in that: The sealing valve (2-5) is made of a bowl-shaped rubber part.

6. An integrated one-way valve structure according to claim 1, characterized in that: Two groups of clamping grooves (1-1) are provided on the upper housing (1), and are arranged on the left and right sides of the upper housing (1). Claws corresponding to the positions of the clamping grooves (1-1) are provided on the valve seat (2-2) of the valve assembly (2), and an O-ring (2-3) for sealing is further provided on the valve seat (2-2).

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