CN217440844U

CN217440844U - Integrated valve

Info

Publication number: CN217440844U
Application number: CN202220735044.9U
Authority: CN
Inventors: 杨杨
Original assignee: Kenuo'er Commercial Car System Chongqng Co ltd
Current assignee: Kenuo'er Commercial Car System Chongqng Co ltd
Priority date: 2022-03-30
Filing date: 2022-03-30
Publication date: 2022-09-16
Anticipated expiration: 2032-03-30

Abstract

The utility model relates to a control valve technical field discloses an integrated valve, including valve body and sliding connection in valve body valve rod and piston, fixedly connected with lower cover on the valve body, the valve rod is located between lower cover and the piston, and the one end that the piston was kept away from to the valve rod is equipped with left cavity, is equipped with the elasticity piece that resets in the left cavity of valve rod, and the one end that the piston was kept away from to the valve rod simultaneously is equipped with the shutoff piece with valve rod sliding fit, and the one end and the lower cover of shutoff piece offset, the other end extend to in the left cavity and contact with the elasticity piece that resets. The patent of the utility model provides a problem that two accuse integrated valve life among the prior art are short.

Description

Integrated valve

Technical Field

The utility model relates to a control valve technical field, concretely relates to integrated valve.

Background

For the mechanical transmission with the main and auxiliary box structure, an air valve and an air cylinder are usually adopted for gear switching of the auxiliary box, the air valve adopts a two-position five-way valve structure, and meanwhile, because some transmissions with the main and auxiliary box structure are influenced by an operation structure, a two-position two-way mechanical control valve is additionally arranged at the front end of the two-position five-way valve.

In order to simplify the overall control structure and improve the assembly efficiency, the invention patent with the publication number of CN 104033626a discloses a double-control integrated valve, as shown in fig. 1, a two-position two-way mechanical control valve and a two-position five-way pneumatic control valve are integrated together, and simultaneously, the requirement that the auxiliary box synchronizer cannot be out of gear during working is met, and an inverted T-shaped valve body structure is adopted, so that the valve bodies of the two-position two-way air valve and the two-position five-way air valve are of an integrated structure, thereby facilitating the processing and reducing the cost. Specifically, as shown in fig. 1, a valve rod 2 and a piston 3 are connected in a valve body 1 in a transverse sliding manner, a left chamber and a right chamber are formed in the valve rod 2, the outer sides of the two chambers are sealed by steel balls, for convenience of distinguishing, a chamber on the valve rod 2 close to one end of the piston 3 is referred to as a right chamber, and the other chamber is referred to as a left chamber. In a natural state, the valve rod 2 is located at the right limit position, the two-position two-way valve above the valve rod is communicated with the left chamber 201, when compressed gas is introduced into the second air inlet 7 on the left side of the piston 3, the piston 3 and the valve rod 2 are stressed to slide leftwards under the pressure action of the compressed gas, so that the two-position two-way valve above the valve rod is communicated with the right chamber of the valve rod 2, the switching of a passage is realized, and after the pressure in the second air inlet 7 is released, the valve rod 2 automatically resets under the elastic force action of the compression spring 14.

Although the overall structure of the valve body 1 can be more compact by adopting the double-control integrated valve, the following problems still exist in the using process: 1. the valve rod 2 in the two-position five-way valve is only completed by the elasticity of the compression spring 14 in the return process, and after the two-position five-way valve is used for a period of time, because the friction force in the valve is increased and the spring is gradually attenuated, the double-control integrated valve is easy to be blocked and can not return in the use process, so that the function failure of the valve is caused; 2. the space of the two-position five-way valve is limited, so that the compression spring 14 works under a high compression rate, and the attenuation is serious, thereby influencing the normal work of the two-position five-way valve; 3. in the two-position five-way valve, the compression spring 14 is easily corroded by water and even broken in the using process due to the poor waterproof capability of the lower cover 4. The existing double-control integrated valve has poor stability and short service life due to the reasons.

SUMMERY OF THE UTILITY MODEL

The utility model discloses it is anticipated that an integrated valve is provided to solve the two problem of controlling integrated valve life weak points among the prior art.

In order to solve the above problem, the utility model adopts the following technical scheme: the utility model provides an integrated valve, includes valve body and sliding connection in valve body valve rod and piston, fixedly connected with lower cover on the valve body, the valve rod is located between lower cover and the piston, the one end that the piston was kept away from to the valve rod is equipped with left cavity, is equipped with the elasticity piece that resets in the left cavity of valve rod, the one end that the piston was kept away from to the valve rod simultaneously is equipped with the shutoff piece with valve rod sliding fit, the one end and the lower cover of shutoff piece offset, the other end extends to in the left cavity and contact with the elasticity piece that resets.

The beneficial effect of this scheme lies in:

1. the arrangement of the elastic reset piece is more reasonable: compare in prior art compression spring is the one end that is located the valve rod, compression spring's installation space is limited, make compression spring take place the decay easily in the use and the cracked condition even, directly reset the piece with elasticity in this application and set up in left cavity, because the length of left cavity is longer compared in prior art compression spring's installation length, make the length that elasticity resets in this application longer and arrange more easily, under the condition of producing equal elastic restoring force, the stress that elasticity resets in this application received reduces, the decay reduces and is difficult damaged in the use, thereby prolong the life of integrated valve.

2. The valve rod is favorable to reset: in the application, because the elastic reset piece is arranged in the left chamber, the left chamber is communicated with the two-position two-way valve through the valve rod, and in the communication process, the movement of the valve rod is completed by the elastic force of the elastic reset piece, in the application, in the reset process of the valve rod under the elastic force of the elastic reset piece, the compressed gas in the two-position two-way valve can enter the left chamber, because one end of the plugging piece is propped against the lower cover, the other end of the plugging piece is contacted with the elastic reset piece positioned in the left chamber, and the end of the plugging piece contacted with the elastic reset piece is positioned in the left chamber, the plugging piece can play a sealing role on the left chamber, so the compressed gas entering the left chamber from the two-position two-way valve can assist the elastic reset piece to push the valve rod to reset, thereby increasing the sliding return force of the push valve rod and reducing the load of the elastic reset piece, further prolong the life that elasticity reset, promote the stability of integrated valve.

3. Can reset the piece to elasticity and play the guard action: compare compression spring among the prior art easily receives water corrosion and even fracture, elasticity in this application resets inside being located left cavity, and utilizes the shutoff piece to seal left cavity for left cavity can reset the piece to elasticity and play the guard action in the use, thereby extension elasticity resets the life of piece.

Preferably, as an improvement, the blocking member includes a plunger, and a sealing member is fixedly connected to an end of the plunger extending into the left chamber.

In this scheme, plunger simple structure, processing is convenient, and fixed connection sealing member on the plunger simultaneously further promotes the sealing performance to left cavity, effectively guarantees the supplementary return effect of two-position two-way valve to the valve rod.

Preferably, as an improvement, the sealing element comprises a sealing ring which is clamped on the plunger.

In this scheme, through the mode fixed seal circle of joint, the installation is simple and the sealing performance of sealing washer is stable.

Preferably, as a refinement, the elastic restoring member is a compression spring.

In this scheme, utilize compression spring as elasticity piece that resets, compression spring's elasticity is stable, and compression spring can not produce great interference to the gas flow in the left cavity when being located left cavity to integrated valve can the steady operation.

Preferably, as a modification, the end of the plunger extending into the left chamber is provided with a boss cooperating with the compression spring.

In this scheme, through setting up boss and compression spring cooperation for compression spring is compressing and the in-process homoenergetic that resets and is formed stable the being connected with the plunger, effectively promotes compression spring's stability.

Preferably, as an improvement, a valve core is connected in the valve body in a sliding manner, a first air inlet matched with the valve core is formed in the valve body, and a guide ring in sliding fit with the valve core is fixedly connected in the valve body.

In this scheme, the case is as the valve rod in the two-position two-way valve, compressed gas in the first air inlet can enter into the case, then enter into the left cavity and the right cavity of valve rod by the case again, because the case among the prior art with valve body direct contact, consequently the case is great with the frictional force between the valve body in the use for case wearing and tearing are serious, and pass through the installation guide ring in this scheme, make case and guide ring contact, effectively reduce the wearing and tearing of case, the life of extension pile-up valve.

Preferably, as a modification, the guide ring is located at an end of the valve element close to the valve stem.

Among the prior art, the one end of case is close to the valve rod, the other end is with the ejector pin contact, and the one end that present case is close to the ejector pin has set up the holding ring, consequently sets up the guide ring in this scheme in the one end that the case is close to the valve rod for the both ends of case can be by the spacing direction of holding ring and guide ring, reduce the wearing and tearing between case and the valve body, thereby prolong the life of case.

Preferably, as an improvement, the valve body is provided with a third air inlet matched with the valve core.

In the existing integrated valve, the two-position two-way valve structure only has one first air inlet, but in the practical application process, in order to realize certain control functions, a three-way valve needs to be connected to the two-position two-way valve so as to realize the corresponding functions. In this scheme, directly set up the third air inlet on the valve body to practice thrift a three way connection, not only can reduce cost, reduce the installation degree of difficulty and reduce the pipeline setting.

Preferably, as a modification, the first and third intake ports are located on both sides of the valve body.

In this scheme, first air inlet and third air inlet are located the both sides of valve body, and convenient connecting tube way on two air inlets, interference each other is few.

Drawings

Fig. 1 is a front cross-sectional view of a dual control integrated valve in the prior art.

Fig. 2 is a schematic diagram of a first embodiment of the present invention.

Fig. 3 is a front cross-sectional view of fig. 2.

Fig. 4 is a front cross-sectional view of a second embodiment of the present invention.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the valve comprises a valve body 1, a valve rod 2, a left chamber 201, a right chamber 202, a piston 3, a lower cover 4, a first air outlet 5, a second air outlet 6, a second air inlet 7, a mandril 8, a valve core 9, a positioning ring 10, a guide ring 11, an upper spring 12, a first air inlet 13, a compression spring 14, a plunger 15, a sealing ring 16 and a third air inlet 17.

Example one

The first embodiment is substantially as shown in figures 2 and 3: the utility model provides an integrated valve, including whole valve body 1 that is the type of falling T, be close to bottom lateral sliding connection in the valve body 1 and have valve rod 2 and piston 3, and the valve rod 2 left side is close to the bottom through screw fixedly connected with lower cover 4, valve rod 2 is located between lower cover 4 and the piston 3, the left end and the right-hand member of valve rod 2 are equipped with two mutually independent left cavity 201 and right cavity 202, it has the via hole with left cavity 201 and right cavity 202 intercommunication to open on the outer wall of valve rod 2, open the bottom of valve body 1 have respectively with left cavity 201 and right cavity 202 complex first gas outlet 5 and second gas outlet 6, it has second air inlet 7 with piston 3 complex to open on the right side wall of valve body 1 simultaneously, when letting in compressed gas to second air inlet 7, can promote piston 3 and valve rod 2 and slide left.

The top of valve body 1 is equipped with ejector pin 8 and case 9 downwards in proper order, and ejector pin 8 and case 9 all with the vertical sliding connection of valve body 1, in order to avoid producing the sliding friction between case 9 and the valve body 1 and cause the wearing and tearing of case 9 and valve body 1, has connect holding ring 10 and guide ring 11 in this implementation in valve body 1. The bottom end of the valve core 9 is provided with a cavity matched with the valve body 1 (in order to realize the communication between the cavity of the valve core 9 and the valve body 1, a communicating channel is arranged on the valve body 1, which is not described much), an upper spring 12 which is vertically arranged is arranged in the cavity, the outer wall of the valve core 9 is provided with a through hole communicated with the cavity, and the left side of the valve body 1 is provided with a first air inlet 13 matched with the through hole, and in a natural state, the first air inlet 13 is opposite to the through hole, so that the compressed gas in the first gas inlet 13 can enter the cavity through the through hole of the valve core 9, then flows downwards to the valve body 1 through the cavity, and then enters the left chamber 201 or the right chamber 202 through a through hole on the valve body 1, when the mandril 8 is pushed to move downwards by external force, namely, the through hole on the valve core 9 is staggered with the first air inlet 13, so that the compressed air in the first air inlet 13 can not flow downwards to realize the cutoff.

As shown in fig. 2, be equipped with the elasticity piece that resets in the left cavity 201 of valve rod 2, and the left end of valve rod 2 is connected with the shutoff piece, in this embodiment, the elasticity piece that resets is including placing compression spring 14 in left cavity 201, the shutoff piece is the plunger 15 of horizontal setting, the left end and the upper cover of plunger 15 offset, the right-hand member of plunger 15 extends to in the left cavity 201, and the right-hand member integrated into one piece of plunger 15 has the boss with compression spring 14 complex for compression spring 14's left end card is gone into on the boss. Meanwhile, in order to enable the sealing element to have a better sealing effect on the left chamber 201, in the embodiment, the sealing element is fixedly connected to the right end of the plunger 15 and adopts an O-shaped sealing ring 16, an annular groove is formed in the outer wall of the plunger 15, and the sealing ring 16 is clamped in the annular groove and is fixed.

The specific implementation process is as follows:

in this embodiment, when compressed gas is introduced into the second gas inlet 7, the piston 3 and the valve rod 2 are pushed leftward in fig. 3, so that the compression spring 14 is compressed, and the valve rod 2 slides leftward relative to the plunger 15, so that the compressed gas in the first gas inlet 13 enters the right chamber 202 through the through hole in the valve body 1 after passing through the valve element 9, and finally flows out of the valve body 1 after flowing from the right chamber 202 to the second gas outlet 6. After the pressure in the second air inlet 7 is released, the compression spring 14 pushes the valve rod 2 and the piston 3 to synchronously slide rightwards for resetting, when the left chamber 201 is communicated with the cavity of the valve core 9, the compressed air in the first air inlet 13 enters the left chamber 201, and at the moment, the compressed air in the left chamber 201 assists in pushing the valve rod 2 and the piston 3 to slide rightwards for resetting.

In this embodiment, since the compression spring 14 is disposed in the left chamber 201, and the plunger 15 is used to seal the left end (i.e., the open end) of the left chamber 201, the compression spring 14 is in a relatively dry and stable working environment, which can reduce the corrosion of the compression spring 14 by water, and can ensure that the compression spring 14 can stably work for a long time; meanwhile, when the compression spring 14 is used for pushing the valve rod 2 and the piston 3 to reset, compressed gas in the first air inlet 13 can enter the left chamber 201 to play an auxiliary pushing role in resetting the valve rod 2 and the piston 3, so that the load of the spring is reduced, the service life of the compression spring 14 is further prolonged, the resetting accuracy of the valve rod 2 and the piston 3 is improved, and the running stability of the integrated valve is improved.

Example two

The difference between the second embodiment and the first embodiment is that: as shown in fig. 4, in the present embodiment, a third air inlet 17 matched with a through hole on the valve core 9 is formed on the right side wall of the valve body 1, and the third air inlet 17 is arranged opposite to the second air inlet 7. In this embodiment, in the use of integrated valve, need connect the relief pressure valve at the front end of valve body 1 and connect the ooff valve structure on valve body 1, and only have a first air inlet 13 interface on current valve body 1, in order to realize connecting and reasonable control, need use three way connection among the prior art to come valve body 1 to be connected with relief pressure valve and ooff valve, this just causes the trachea to connect complicacy and the cost increase, risk such as gas leakage has increased simultaneously, consequently directly set up third air inlet 17 on valve body 1 in this embodiment, directly be connected the ooff valve among the prior art with third air inlet 17, and the relief pressure valve is directly connected with first air inlet 13, not only practice thrift and use a three way connection, can also effectively simplify the pipeline structure and reduce the risk of gas leakage.

The above description is only an example of the present invention, and the detailed technical solutions and/or characteristics known in the solutions are not described too much here. It should be noted that, for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. The utility model provides an integrated valve, includes valve body and sliding connection valve rod and piston in the valve body, fixedly connected with lower cover on the valve body, the valve rod is located between lower cover and the piston, and the one end that the piston was kept away from to the valve rod is equipped with left cavity, its characterized in that: be equipped with the elasticity piece that resets in the left cavity of valve rod, the one end that the piston was kept away from to the valve rod simultaneously is equipped with the shutoff piece with valve rod sliding fit, and the one end and the lower cover of shutoff piece offset, the other end extend to in the left cavity and contact with the elasticity piece that resets.

2. An integrated valve as defined in claim 1, wherein: the shutoff piece includes the plunger, and the plunger extends to the one end fixedly connected with sealing member in the left cavity.

3. An integrated valve as defined in claim 2, wherein: the sealing element comprises a sealing ring clamped on the plunger.

4. An integrated valve as defined in claim 3, wherein: the elastic reset piece is a compression spring.

5. An integrated valve as defined in claim 4, wherein: and one end of the plunger extending into the left cavity is provided with a boss matched with the compression spring.

6. An integrated valve according to any one of claims 1 to 5, wherein: the valve body is internally and fixedly connected with a guide ring in sliding fit with the valve core.

7. An integrated valve as defined in claim 6, wherein: the guide ring is positioned at one end of the valve core close to the valve rod.

8. An integrated valve as defined in claim 7, wherein: and the valve body is provided with a third air inlet matched with the valve core.

9. An integrated valve as defined in claim 8, wherein: the first air inlet and the third air inlet are positioned on two sides of the valve body.