A drainage mechanism for passenger car air storage cylinder

Abstract

The present invention provides a passenger car gas cylinder drainage mechanism, comprising a gas cylinder body, a manual drainage valve, a connecting rod, a pull rod, a fixed seat and a pull block; a gas storage cavity is arranged in the gas cylinder body, the manual drainage valve is installed at the bottom of the gas cylinder body and communicates with the gas storage cavity, a pull ring switch is installed at the bottom of the manual drainage valve, and the pull ring switch can open or seal the manual drainage valve; a sleeve is fixedly installed at the right end of the connecting rod, and the sleeve hooks the pull ring switch; the left end of the connecting rod is hinged with the pull rod; the fixed seat is fixedly installed at the bottom of the gas cylinder body, the fixed seat is located on the left side of the manual drainage valve, a through hole for the pull rod to pass horizontally is arranged on the fixed seat, the end of the pull rod extends out of the through hole and is fixedly connected to the pull block, the pull block is against the outer side of the left fixed wall, and the pull rod can move left and right along the through hole. The drainage operation of the present invention is convenient and hygienic.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile manufacturing, and in particular relates to a drainage mechanism for an air storage cylinder of a passenger car. Background Art

[0002] The air cylinder of a bus is used to store the gas compressed by the air compressor, and to provide stable compressed air for the pneumatic devices such as the brake system, pneumatic doors, and whistles on the bus. After the air cylinder has been used for a period of time, the moisture in the air will condense and remain at the bottom of the air cylinder. In order to provide pure compressed air, the air cylinder needs to be drained regularly. The existing air cylinder has a manual drain valve installed at the bottom. There is a pull ring switch at the bottom of the manual drain valve. Under normal circumstances, the pull ring switch is closed and seals the manual drain valve. When the air cylinder needs to be drained, the pull ring switch is pulled outward to open the manual drain valve for drainage. However, since there is a large amount of compressed air in the air cylinder, when the pull ring switch is pulled, the compressed air is sprayed outward with the accumulated water, which dirtys the operator's hands, making the drainage operation very inconvenient and unhygienic. Summary of the invention

[0003] The purpose of the present invention is to provide a passenger car air cylinder drainage mechanism with convenient and sanitary drainage operation.

[0004] The present invention provides the following technical solutions:

[0005] A passenger car air cylinder drainage mechanism comprises an air cylinder body, a manual drainage valve, a connecting rod, a pull rod, a fixing seat and a pull block;

[0006] An air storage cavity is provided in the air storage cylinder body, the manual drain valve is installed at the bottom of the air storage cylinder body and communicates with the air storage cavity, a pull ring switch is installed at the bottom of the manual drain valve, and the pull ring switch can open or seal the manual drain valve;

[0007] A collar is fixedly mounted on the right end of the connecting rod, and the collar hooks the pull ring switch; the left end of the connecting rod is hinged to the pull rod;

[0008] The fixing seat is fixedly installed on the bottom of the air cylinder body, and the fixing seat is located on the left side of the manual drain valve. The fixing seat is provided with a through hole for the pull rod to pass horizontally. The end of the pull rod extends out of the through hole and is fixedly connected to the pull block. The pull block is against the outer side of the left fixed wall, and the pull rod can move left and right along the through hole.

[0009] Preferably, the fixed seat includes a left fixed wall and a right fixed wall arranged along the longitudinal direction, a spring groove is provided between the left fixed wall and the right fixed wall, a compression spring is axially installed on the pull rod, and the compression spring is located in the spring groove; a limit block is also installed on the pull rod, the right end of the compression spring presses against the limit block, and the limit block presses against the inner wall of the right fixed wall.

[0010] Preferably, an annular mounting groove is respectively provided on the left and right sides of the limit block, the mounting groove is coaxial with the pull rod, a rubber pad is pressed in the mounting groove, and the rubber pad is clamped between the pull rod and the limit block.

[0011] Preferably, the fixing seat also includes an in-place detection block, which is located on the right side of the right fixed wall. The in-place detection block is provided with a hemispherical detection groove, and a pivot is installed at the hinged end of the pull rod, and the head of the pivot extends out of the hinge hole; when the manual drain valve is closed, the head of the pivot is just located in the detection groove.

[0012] Preferably, the head of the pivot is hemispherical to match the detection slot.

[0013] Preferably, a hand pull ring is installed on the left side wall of the pull block.

[0014] The beneficial effects of the present invention are as follows: the present invention installs a connecting rod on the pull ring switch of the manual drain valve, and a pull rod is hinged at the end of the connecting rod, and the pull rod is horizontally installed in the fixing seat and can move horizontally. When the air storage cylinder needs to be drained, the pull rod can be pulled to the left by the pull block fixed at the end of the pull rod to open the manual drain valve, and there is no need to put the hand under the manual drain valve to pull the pull ring switch, so the operation is easier, and the hand will not be dirty by the mixture of sewage and compressed air splashed out of the manual drain valve, and the drainage operation is more hygienic. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is a schematic diagram of the internal structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the main structure of the present invention;

[0018] The markings in the figure are: 1. Air cylinder body; 2. Manual drain valve; 3. Connecting rod; 4. Pull rod; 5. Fixed seat; 6. Pull block; 7. Compression spring; 8. Air inlet; 9. Air outlet; 10. Air storage chamber; 11. Pull ring switch; 12. Ring; 13. Left fixed wall; 14. Right fixed wall; 15. Hand pull ring; 16. Spring groove; 17. Limit block; 18. Rubber pad; 19. In-place detection block; 20. Detection groove; 21. Head of the pivot. DETAILED DESCRIPTION

[0019] like Figure 1 As shown, a passenger car air cylinder drainage mechanism includes an air cylinder body 1, a manual drainage valve 2, a connecting rod 3, a pull rod 4, a fixing seat 5, a pull block 6 and a compression spring 7.

[0020] An air inlet 8 and an air outlet 9 are respectively provided at the left and right ends of the air cylinder body 1, and an air storage chamber 10 is provided inside the air cylinder body 1. A manual drain valve 2 is installed at the bottom of the air cylinder body 1 and is connected to the air storage chamber 10. A pull ring switch 11 is installed at the bottom of the manual drain valve 2. In the air storage working state, the pull ring switch 11 is in a vertical state, and the pull ring switch 11 closes and seals the manual drain valve 2. Pulling the pull ring switch 11 can open the manual drain valve 2, and the residual water in the air storage chamber 10 can be discharged through the manual drain valve 2.

[0021] A ring 12 is hooked on the pull ring switch 11, the right end of the connecting rod 3 is welded to the ring 12, and the left end of the connecting rod 3 is hinged to the pull rod 4. The connecting rod 3 is hinged to the pull rod 4. When the pull ring switch 11 is pulled to the left, the connecting rod 3 automatically rotates slightly upward relative to the pull rod 4 to adapt to the rotation angle of the pull ring switch 11.

[0022] The fixing seat 5 is welded to the bottom of the gas cylinder body 1 and is located on the left side of the manual drain valve 2. The fixing seat 5 includes a left fixing wall 13 and a right fixing wall 14 arranged in the longitudinal direction. The left fixing wall 13 and the right fixing wall 14 are both provided with through holes for the pull rod 4 to pass horizontally. The sizes of the two through holes match the pull rod and are located at the same height. The left end of the pull rod 4 extends out of the two through holes in turn and is threadedly connected to the pull block 6. The pull block 6 abuts against the outer side of the left fixing wall 13. A hand pull ring 15 is installed on the left side wall of the pull block 6. Pulling the hand pull ring 15 can move the pull rod 4 to the left along the through hole, thereby opening the pull ring switch 11.

[0023] A spring slot 16 is provided between the left fixed wall 13 and the right fixed wall 14, and a compression spring 7 is axially installed on the pull rod 4, and the compression spring 7 is located in the spring slot 16; a limit block 17 is also fixedly installed on the pull rod 4, and the left end of the compression spring 7 presses against the inner wall of the left fixed wall 13, and the right end of the compression spring 7 presses against the limit block 17, and the limit block 17 presses against the inner wall of the right fixed wall 14. A rubber pad 18 is fixed to the right side wall of the limit block 17 by screws, and the rubber pad 18 is clamped between the limit block 17 and the right fixed wall 14, and the rubber pad 18 has the effect of shock absorption and noise reduction. When the pull rod 4 is pulled to the left to drain water, the compression spring 7 is squeezed by the limit block 17; after the drainage is completed, the hand pull ring 15 is released, the compression spring 7 is reset to the right and pushes the limit block 17 and the pull rod 4 to move to the right until the limit block 17 and the rubber pad 18 are against the right fixed seat 14, so that the pull ring switch 11 returns to the vertical state and the manual drain valve 2 is closed again.

[0024] like Figure 1 and Figure 2 As shown, the fixed seat 5 also includes an in-place detection block 19, which is fixed to the right side of the right fixed wall 14. A hemispherical detection groove 20 is provided on the in-place detection block 19. A pivot is installed at the hinged end of the pull rod 4, and the head 21 of the pivot extends out of the hinge hole. The head 21 of the pivot is hemispherical and matches the detection groove 20. When the manual drain valve 2 is closed, the head 21 of the pivot just slides into the detection groove 20, thereby positioning and correcting the horizontal coordinate of the pull rod 4, so that the pull ring switch 11 is just in a vertical closed state, avoiding the phenomenon that the pull ring switch 11 cannot be reset due to the weakening of the spring force of the compression spring 7 after long-term use. It can be easily judged whether the two are completely engaged by the collision sound emitted when the head of the pivot slides into the detection groove 20.

[0025] The working process of the drainage mechanism is as follows: when the air cylinder body 1 needs to be drained, the hand pull ring 15 is pulled to the left, so that the pull rod 4 drives the connecting rod 3 to move to the left, thereby pulling the pull ring switch 11, opening the manual drainage valve 2, and draining the air storage chamber. After the drainage is completed, the hand pull ring 15 is released, and the compression spring 7 squeezes the limit block 17 to the right, so that the limit block 17 moves to the right together with the pull rod 4 until the limit block 17 abuts against the right fixed wall 14. At this time, the head 21 of the pivot just slides into the detection groove 20, and the pull rod 4 restores the pull ring switch 11 to a vertical state through the connecting rod 3, and closes the manual drainage valve 2. The manual drainage valve of the present invention is easy to operate. When opening the manual drainage valve, there is no need for the hand to directly touch the pull ring switch, so the hand will not be contaminated by splashing water and compressed air, and the use process is hygienic and clean.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A passenger car air tank drainage mechanism, characterized in that: It includes an air storage cylinder body, a manual drain valve, a connecting rod, a pull rod, a fixing seat and a pull block; An air storage cavity is provided in the air storage cylinder body, the manual drain valve is installed at the bottom of the air storage cylinder body and communicates with the air storage cavity, a pull ring switch is installed at the bottom of the manual drain valve, and the pull ring switch can open or seal the manual drain valve; A collar is fixedly mounted on the right end of the connecting rod, and the collar hooks the pull ring switch; the left end of the connecting rod is hinged to the pull rod; The fixing seat is fixedly installed at the bottom of the gas storage cylinder body, the fixing seat is located on the left side of the manual drain valve, the fixing seat is provided with a through hole for the pull rod to pass horizontally, the end of the pull rod extends out of the through hole and is fixedly connected to the pull block, the fixing seat includes a left fixed wall and a right fixed wall arranged in the longitudinal direction, the pull block is against the outer side of the left fixed wall, and the pull rod can move left and right along the through hole; A spring groove is provided between the left fixed wall and the right fixed wall, a compression spring is axially installed on the pull rod, and the compression spring is located in the spring groove; a limit block is also installed on the pull rod, the right end of the compression spring presses against the limit block, and the limit block presses against the inner wall of the right fixed wall; The fixing seat also includes an in-place detection block, which is located on the right side of the right fixing wall. The in-place detection block is provided with a hemispherical detection groove. The hinged end of the pull rod is provided with a pivot, and the head of the pivot extends out of the hinge hole. When the manual drain valve is closed, the head of the pivot is just located in the detection groove. A hand pull ring is installed on the left side wall of the pull block.

2. The passenger car air cylinder drainage mechanism according to claim 1, characterized in that: Annular mounting grooves are respectively arranged on the left and right sides of the limit block. The mounting grooves are coaxial with the pull rod. A rubber pad is pressed in the mounting grooves. The rubber pad is clamped between the pull rod and the limit block.

3. The passenger car air cylinder drainage mechanism according to claim 1, characterized in that: The head of the pivot is in a hemispherical shape matching the detection slot.

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