Air inlet valve for double-tower adsorption type air dryer

Abstract

The utility model discloses an air inlet valve for a double-tower adsorption type air dryer, and belongs to an air inlet valve for a double-tower adsorption type air dryer, which is simple in structure and long in service life. The air inlet valve is composed of a clamping sleeve connector, an air inlet valve cover, a fastening bolt, an elastic washer, a flat washer, an air inlet valve body, an air inlet valve element screw, an aluminum pad, a valve element rubber layer, an air inlet valve element, a sealing ring and a self-locking nut. According to the utility model, the aluminum pad and the air inlet valve core are sequentially arranged on one side of the air inlet valve core screw rod, and the assembly is arranged in the air inlet valve body, so that the air inlet valve core assembly can move smoothly without being jammed. According to the air inlet valve of the double-tower adsorption type air dryer, pilot air enters the two sides to be reversed, sensitivity and reliability are achieved, and the structure is simple; the valve element of the air inlet valve is integrally manufactured, so that the service life of the valve element of the air inlet valve is longer, and the sealing effect is more excellent.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of air inlet valve design field of double-tower adsorption type air dryer, specifically a kind of air inlet valve of double-tower adsorption type air dryer with simple structure and long service life. BACKGROUND

[0002] Since reform and opening, the urban economic development speed of our country is accelerating unceasingly, but also exposes the malpractice of urban traffic development speed slowly, at this time, developing efficient, convenient traffic transport system is the primary goal of urban development, and developing diversified urban traffic is urgent.In this background, subway, a new type of traffic transport mode, gradually becomes the focus of urban traffic construction.

[0003] Many cities in China are now speeding up the construction of railways, and with the success of subway construction in these cities, the total subway mileage in China will be further improved.In order to promote the sustainable development of China's transportation construction, it is necessary to develop subway transportation on the basis of protecting the environment, saving urban land and resources, so it is believed that with the development of cities in China, there is still great room for development in domestic urban subway construction in the future, and it will inevitably become an indispensable mode of transportation in future urban development.

[0004] An air dryer is needed during subway operation to process compressed air to provide clean, dry compressed air for subway vehicle arch raising system, braking system and main circuit breaker system, to ensure stable and reliable operation of subway vehicles, which is a powerful guarantee for reliable operation of subway vehicles and an indispensable part of subway vehicles.

[0005] At present, the air inlet valve component of domestic double-tower adsorption type air dryer has the problems of complex structure, high cost, short service life of valve core, high replacement frequency and poor sealing effect of split type air inlet valve core and sealing element. UTILITY MODEL CONTENTS

[0006] The utility model discloses to the complex structure of previous double-tower adsorption type air dryer's air inlet valve, high cost, short service life of air inlet valve core, high replacement frequency, split type air inlet valve core and sealing element, the defect that sealing effect is not good, discloses a kind of air inlet valve of double-tower adsorption type air dryer to solve above-mentioned technical problem.

[0007] The utility model is realized as follows:

[0008] An air inlet valve for double-tower adsorption type air dryer, comprising: an air inlet valve core assembly, the air inlet valve core assembly comprises an air inlet valve core screw rod, one side of the air inlet valve core screw rod is sequentially provided with an aluminum pad, a valve core rubber layer and an air inlet valve core; the air inlet valve core assembly is located in an air inlet valve body; an air inlet valve cover is blocked at both ends of the air inlet valve body; a clamp sleeve joint is screwed into a threaded hole of the air inlet valve cover.

[0009] Furthermore, a sealing ring is used to seal the intake valve core and the inner cavity of the intake valve body, and the intake valve core is locked with a self-locking nut to ensure that the intake valve core assembly can move smoothly without jamming.

[0010] Furthermore, the intake valve cover and the intake valve body are fastened together with fastening bolts, spring washers, and flat washers.

[0011] Furthermore, when the dryer provides pilot gas, which enters through the right-side ferrule connector, the pilot gas passes through the internal air passage of the intake valve cover and then enters the right side of the intake valve body, pushing the valve core assembly to the left and pressing the right-side valve core rubber layer to contact the internal end face of the intake valve body, forming an end seal, while there is no contact on the left side.

[0012] Furthermore, the main inlet gas is sealed at the end because the rubber layer of the right valve core is in contact with the inner end face of the inlet valve body, while the rubber layer of the left valve core is not in contact with the inner end face of the inlet valve body, forming a left gas passage. All the main inlet gas is output from the left outlet to the left tower of the dryer for subsequent drying processes.

[0013] Conversely, when the dryer provides pilot gas, which enters through the left ferrule connector, the valve core assembly moves to the right, forming an end seal on the left and a gas passage on the right. The main inlet gas is output from the right outlet to the right tower of the dryer for subsequent drying processes, and the process is repeated in this way.

[0014] The advantages of this utility model compared with the prior art are as follows:

[0015] 1. The air inlet valve of the dual-tower adsorption air dryer of this utility model adopts a pilot gas inlet with two-sided reversal, which is sensitive, reliable and simple in structure;

[0016] 2. The rubber layer of the intake valve core of the dual-tower adsorption air dryer of this utility model is made into one piece by vulcanization process, which makes the intake valve core have a longer service life and a better sealing effect.

[0017] 3. The intake valve core of the dual-tower adsorption air dryer of this utility model is assembled with a special aluminum gasket, which makes its left and right movements more stable and reliable. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an air inlet valve for a dual-tower adsorption air dryer according to the present invention;

[0019] Figure 2 This is a schematic diagram illustrating the operating principle of the air inlet valve for a dual-tower adsorption air dryer according to this utility model.

[0020] Among them, 1-compression fitting, 2-intake valve cover, 3-fastening bolt, 4-spring washer, 5-flat washer, 6-intake valve body, 7-intake valve core screw, 8-aluminum gasket, 9-valve core rubber layer, 10-intake valve core, 11-sealing ring, 12-self-locking nut. Detailed Implementation

[0021] To make the objectives, technical solutions, and effects of this utility model clearer and more explicit, the following examples provide a more detailed description of this utility model. It should be noted that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit its scope.

[0022] like Figure 1 As shown, the air inlet valve for a dual-tower adsorption air dryer of this utility model consists of a compression fitting 1, an air inlet valve cover 2, a fastening bolt 3, a spring washer 4, a flat washer 5, an air inlet valve body 6, an air inlet valve core screw 7, an aluminum gasket 8, a valve core rubber layer 9, an air inlet valve core 10, a sealing ring 11, and a self-locking nut 12.

[0023] This utility model first installs an aluminum gasket 8, an intake valve core 1 (including a valve core rubber layer 9, and a sealing ring 11) sequentially on one side of the intake valve core screw 7, and locks them with a self-locking nut 12; then installs this assembly into the intake valve body 6, and installs an aluminum gasket 8, an intake valve core 10 (including a valve core rubber layer 9), and a sealing ring 11 sequentially on the other end of the intake valve core screw 7, and locks them with a self-locking nut 12; ensuring that the intake valve core assembly can move smoothly without jamming. The intake valve cover 2 is then placed on both ends of the intake valve body 6 and secured with bolts 3, spring washers 4, and flat washers 5. Finally, the compression fitting 1 is screwed into the threaded hole of the intake valve cover 2. When installing the intake valve cover (2), the threaded hole faces upwards. Figure 1 As shown.

[0024] like Figure 2 As shown, when the dual-tower adsorption dryer is working, the dryer provides pilot gas, which enters through the right-side compression fitting 1 (as shown). Figure 2 (As indicated by the arrow), the pilot gas passes through the internal air passage of the intake valve cover 2, and then enters the right side of the intake valve body 6, pushing the valve core assembly to the left. This forces the right-side valve core rubber layer 9 to contact the internal end face of the intake valve body 6, forming an end seal. There is no contact on the left side.

[0025] At this point, the gas entering the main inlet is sealed at the end because the rubber layer 9 of the right valve core is in contact with the inner end face of the inlet valve body 6. However, the rubber layer 9 of the left valve core is not in contact with the inner end face of the inlet valve body 6, forming a left-side gas passage. Therefore, all the gas entering the main inlet is output from the left outlet to the left tower of the dryer for subsequent drying processes.

[0026] Conversely, when the dryer supplies pilot gas, which enters through the left-side ferrule connector 1, the valve core assembly moves to the right, forming an end seal on the left and a gas passage on the right. The main inlet gas is then output from the right-side outlet to the right tower of the dryer for subsequent drying processes. This switching cycle repeats continuously.

[0027] The inlet valve of this dual-tower adsorption air dryer uses pilot gas to drive the valve core assembly to move. When pilot gas enters the left ferrule connector 1, the main inlet gas is output from the right outlet to the right tower of the dryer, and vice versa. It has a simple structure and is sensitive and reliable.

[0028] The rubber layer of the intake valve core of this dual-tower adsorption air dryer is made as a single piece using a vulcanization process, resulting in a longer service life and a superior sealing effect.

[0029] The intake valve core of this dual-tower adsorption air dryer uses a special aluminum gasket during assembly, making its left and right movements more stable and reliable.

[0030] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements can be made without departing from the principle of the present utility model, and these improvements should also be considered within the protection scope of the present utility model.

Claims

1. An air inlet valve for a dual-tower adsorption air dryer, characterized in that, The intake valve is a symmetrical double-tower structure with pilot gas entering from both sides for reversal; including: a compression fitting (1), an intake valve cover (2), a fastening bolt (3), a spring washer (4), a flat washer (5), an intake valve body (6), an intake valve core assembly, a sealing ring (11), and a self-locking nut (12). The intake valve core assembly includes an intake valve core screw (7), and an aluminum pad (8), a valve core rubber layer (9), and an intake valve core (10) are sequentially arranged on one side of the intake valve core screw (7). The intake valve core assembly is located inside the intake valve body (6); the intake valve cover (2) is used to block the left and right ends of the intake valve body (6); the ferrule connector (1) is screwed into the threaded hole of the intake valve cover (2).

2. The air inlet valve for a dual-tower adsorption air dryer according to claim 1, characterized in that, The intake valve core (10) and the inner cavity of the intake valve body (6) are sealed by a sealing ring (11). The intake valve core (10) is locked with a self-locking nut (12) to ensure that the intake valve core assembly can move smoothly without jamming.

3. The air inlet valve for a dual-tower adsorption air dryer according to claim 1, characterized in that, The intake valve cover (2) and the intake valve body (6) are fastened together with fastening bolts (3), spring washers (4), and flat washers (5).

4. The air inlet valve for a dual-tower adsorption air dryer according to claim 1, characterized in that, When the dryer provides pilot gas, it enters through the right-side ferrule connector (1). The pilot gas passes through the internal air passage of the intake valve cover (2) and then enters the right side of the intake valve body (6), pushing the valve core assembly to the left and pressing the right-side valve core rubber layer (9) to contact the inner end face of the intake valve body (6), forming an end seal, while there is no contact on the left side.

5. The air inlet valve for a dual-tower adsorption air dryer according to claim 4, characterized in that, The gas from the main inlet is sealed at the end because the rubber layer (9) of the valve core on the right side is in contact with the inner end face of the valve body (6) of the inlet valve, while the rubber layer (9) of the valve core on the left side is not in contact with the inner end face of the valve body (6), forming a gas passage on the left side. All the gas from the main inlet is output from the left outlet to the left tower of the dryer for subsequent drying processes.

6. The air inlet valve for a dual-tower adsorption air dryer according to claim 4, characterized in that, Conversely, when the dryer provides pilot gas, which enters through the left ferrule connector (1), the valve core assembly moves to the right, forming an end seal on the left and a gas passage on the right. The main inlet gas is output from the right outlet to the right tower of the dryer for subsequent drying processes, and the process is repeated in this way.

Images