Drain valve for air reservoir of commercial vehicle

Abstract

The utility model belongs to the technical field of drainage accessories for automobile air reservoirs, and provides a drainage valve for an air reservoir of a commercial vehicle in order to solve the technical problems that during drainage, condensate water is splashed to the body of a user, external force needs to be applied continuously, and labor intensity is increased. The valve element partially extends out of the shell from the round hole, through structural improvement, accessories such as the drainage sleeve and the handle are added, the drainage sleeve and the shell can rotate by 360 degrees along the axis, and directional drainage of condensate water in the air storage cylinder is achieved by adjusting the direction of the drainage hole. An existing pull ring is replaced by the handle, a user rotates the handle along the center line of the transverse mandrel, the working face of the cam portion of the handle pushes the valve element upwards, the valve element moves upwards in the drainage sleeve, accumulated water can flow out of the drainage hole, the user does not need to apply external force continuously, and labor intensity is relieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of drainage accessories for automobile air storage cylinders. Background Art

[0002] When a commercial vehicle's air tank stores compressed air, the outside temperature drops, causing water vapor to condense into liquid water. This water cannot be discharged on its own. Over time, the condensed water will accumulate at the bottom of the air tank. If it is not discharged in time, it will corrode the inner wall of the air tank. The generated corrosive substances can easily move along the pipeline to the brake valve and other parts, causing the valve to not close tightly, thereby affecting the braking performance and posing a safety hazard. Therefore, a corresponding drain valve needs to be installed under the air tank to discharge the internal condensed water. Figure 1 As shown, a spring 12 is assembled inside the existing drain valve housing 11, and a circular hole is opened at the lower end. A valve plate 13 partially extends out of the housing 11 from the circular hole. A pull ring 14 is fixed to the lower end of the valve plate 13. When draining condensed water from the air storage cylinder, the user needs to pull the pull ring sideways to create a gap between the valve plate and the housing, so that the accumulated water in the air storage cylinder can flow out through the gap.

[0003] However, when discharging, the accumulated water in the cylinder is affected by the pressure and gravity in the cylinder, forming a downward open spray, which can easily splash onto the user; and the pull ring needs to be pulled continuously during the drainage process, otherwise the spring will push the valve plate 13 to return to its original position to block the gap, which brings inconvenience to the user. Utility Model Content

[0004] In order to solve the technical problems of condensed water splashing onto the user during drainage and the need to continuously apply external force, which increases labor intensity, the utility model provides a drainage valve for a commercial vehicle air tank.

[0005] A drain valve for a commercial vehicle air tank, such as Figures 2-4 As shown, the housing 1 is equipped with a reset spring 2, and a circular hole is opened at the lower end. The valve core 3 partially extends out of the housing 1 from the circular hole, and also includes a drainage sleeve 4 that can be rotatably clamped with the lower part of the housing 1. The interior of the drainage sleeve 4 is divided into an inner cavity, a positioning portion and a handle mounting portion from top to bottom. A drainage hole 5 is opened on one side of the bottom of the inner cavity. The inner wall of the positioning portion is in close contact with the lower end of the valve core 3. The handle mounting portion is a groove extending upward from the bottom of the drainage sleeve 4, and a transverse core shaft 6 is installed in the groove. It also includes a handle 7, as shown in FIG. Figure 5 As shown, it consists of a cam portion 71 and a hand-held portion 72. The working surface of the cam portion is a cylinder, the diameter of the cylinder is perpendicular to the axis of the handle 7, and an axial hole 73 is opened off the axis. The handle 7 passes through the transverse core shaft 6 through the axial hole 73, so that the working surface of the cam portion contacts the bottom end of the valve core 3. It also includes a seal for sealing the contact parts between the components.

[0006] Technical effects:

[0007] The utility model discloses on the basis of prior art, through structural improvement, increase the drainage sleeve and handle and so on accessory, drainage sleeve and shell can be along the axis 360 ° rotation between, realize the directional discharge of the condensate in the air cylinder through the direction of drainage hole, avoid splashing to the user's body, through the handle instead of the existing pull ring, when the drainage valve drainage, the user rotates the handle along the transverse core shaft center line, makes handle cam portion work surface upward push the valve core, and the valve core moves upward in the drainage sleeve, and the accumulated water can flow from the drainage hole, and the handle can make the drainage valve be in the open state all the time, need not the user to continuously exert external force, and the labor intensity is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0008] Figure 1 It is the internal structure section view of prior art drainage valve.

[0009] Figure 2 It is the overall structure front view of the utility model embodiment.

[0010] Figure 3 It is the overall structure left view of the utility model embodiment

[0011] Figure 4 It is the internal structure section view along the AA direction of the utility model embodiment. Figure 3

[0012] Figure 5 It is the handle shape and structure schematic view in the utility model embodiment. DETAILED DESCRIPTION

[0013] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments of the utility model, all other embodiments obtained by the person skilled in the art without creative labor under the premise of using the embodiments in the utility model, belong to the protection scope of the utility model.

[0014] The shell is used to bear and assemble the remaining components, and the contact part with the drainage sleeve is provided with a sealing ring groove and a snap ring groove, and a steel wire snap ring 41 is arranged in the snap ring groove to realize locking and fixing between the shell.

[0015] The handle is provided with a shaft hole, as shown in the drawing, the distance from the upper and lower edges of the cam portion 71 to the center shaft of the shaft hole is different, the handle 7 passes through the transverse core shaft 6 through the shaft hole 73 and can rotate 0 ° ~ 180 ° along the transverse core shaft. Figure 5

[0016] ​​The sealing components include sealing ring 1 91 , sealing ring 2 92 , sealing ring 3 93 , and sealing ring 4 94 . Sealing ring 1 91 is used to seal between the shell 1 and the air storage cylinder, sealing ring 2 92 is used to seal between the shell 1 and the contact part of the valve core 3 , sealing ring 3 93 is used to seal between the shell 1 and the drain sleeve 4 , and sealing ring 4 94 is used to seal between the valve core 3 and the drain sleeve 4 , thereby ensuring that condensed water is discharged only from the drain hole 5 .

[0017] The bottom end of the valve core 3 is a spherical surface. When the handle 7 is rotated, the contact parts of the two are in line contact during the movement, which reduces friction.

[0018] The outer surface of the shell 1 is provided with threads, and the drain valve as a whole is connected to the air storage cylinder on the vehicle by using threads.

Claims

1. A drain valve for a commercial vehicle air tank, wherein a return spring (2) is assembled inside a housing (1), a circular hole is provided at the lower end, and a valve core (3) partially extends out of the housing (1) from the circular hole, characterized in that: The invention also includes a drainage sleeve (4) that can be rotatably engaged with the lower part of the shell (1). The interior of the drainage sleeve (4) is divided into an inner cavity, a positioning portion and a handle installation portion from top to bottom. A drainage hole (5) is opened on one side of the bottom of the inner cavity. The inner wall of the positioning portion is tightly attached to the lower end of the valve core (3). The handle installation portion is a groove extending upward from the bottom of the drainage sleeve (4). A transverse core shaft (6) is installed in the groove. The invention also includes a handle (7) composed of a cam portion (71) and a hand-held portion (72). The working surface of the cam portion is a cylinder. The diameter of the cylinder is perpendicular to the axis of the handle (7). An axial hole (73) is opened off the axis. The handle (7) passes through the transverse core shaft (6) through the axial hole (73) so that the working surface of the cam portion contacts the bottom end of the valve core (3). The invention also includes a sealing member for sealing the contact parts between the components.

2. A drain valve for a commercial vehicle air tank according to claim 1, characterized in that: The contact portion between the housing (1) and the drainage sleeve (4) is provided with a sealing ring groove and a snap ring groove, and a steel wire snap ring (41) is placed in the snap ring groove to achieve locking and fixation with the housing (1).

3. The drain valve for a commercial vehicle air tank according to claim 1, characterized in that: The distances between the upper and lower sides of the cam portion (71) and the central axis of the shaft hole (73) are different. The handle passes through the shaft hole (73) and passes through the transverse core shaft (6) and rotates 0° to 180° along the transverse core shaft.

4. The drain valve for a commercial vehicle air tank according to claim 1, characterized in that: The bottom end of the valve core (3) is a spherical surface.

5. The drain valve for a commercial vehicle air tank according to claim 1, characterized in that: The outer surface of the housing (1) is provided with threads.

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