CN218894994U - One-way air inlet valve and compressor - Google Patents

Abstract

The utility model relates to the technical field of mechanical valves, and provides a one-way intake valve and a compressor. The one-way intake valve includes: a valve seat, a valve cover, a sliding valve body, and a valve core; the valve seat and the valve cover together define a valve In the body cavity, the sliding valve body and the valve core are movably arranged in the valve body cavity; the valve seat and the sliding valve body are fitted together to form a first cavity and a second cavity, and the valve core is set in the second cavity; the valve seat is provided with a first Air hole, the first air hole communicates with the first cavity; under the action of the first air source, the sliding valve body can move along the valve seat, so that the valve core can be switched between fixed and movable states; the valve cover is provided with a second Two air holes; the sliding valve body is provided with a first air passage, one end of the first air passage is selectively communicated with the second cavity, and the other end of the first air passage is selectively communicated with the second air hole; the valve seat is provided with The air outlet channel selectively communicates with the second cavity. The utility model can realize the one-way air intake of the one-way air intake valve under certain conditions.

Description

One-way intake valve and compressor

technical field

The utility model relates to the technical field of mechanical valves, in particular to a one-way intake valve and a compressor.

Background technique

In the field of refrigeration/heat pump technology, compressor injection air supplement is one of the main means to solve the problem of low heating capacity and low heating energy efficiency in vapor compression refrigeration systems under low ambient temperature conditions.

In the field of small refrigeration, the piston compressor is one of the most common compressor structures, but due to its special structure, there is one and only one working space in a unit compression cycle. The air supply hole is equipped with an intake valve to realize injection air supply. However, since the compression, exhaust, expansion and air intake of the piston compressor all occur in the same physical space, the suction volume is reduced, so that the injection air supply process Staying away from the two-stage compression process is not conducive to energy recovery.

The use of high-speed solenoid valve is one of the methods to solve this problem, but due to the poor reliability of the electromagnetic system under high-speed operation, and the matching between the opening and closing of the valve and the phase of the piston movement must be ensured, it is difficult for practical applications (especially free valves). Piston linear compressor) brings certain difficulties.

In summary, the existing one-way inlet valve cannot meet the requirements for use in piston compressors, and needs to be improved.

Utility model content

The utility model provides a one-way intake valve and a compressor, which are used to solve the problem that the prior art one-way intake valve cannot meet the use requirements of the compressor.

The utility model provides a one-way intake valve, comprising: a valve seat, a valve cover, a sliding valve body, and a valve core; The valve core is movably arranged in the inner cavity of the valve body; the valve seat fits with the sliding valve body to form a first cavity and a second cavity, and the valve core is set in the second cavity; The valve seat is provided with a first air hole, the first air hole communicates with the first cavity, and the first air hole is used to communicate with the first air source; under the action of the first air source, the sliding The valve body can move along the valve seat, so that the valve core can be switched between fixed and movable states; the valve cover is provided with a second air hole, and the second air hole is used to communicate with a second air source The sliding valve body is provided with a first air passage, one end of the first air passage selectively communicates with the second cavity, and the other end of the first air passage selectively communicates with the second air hole The valve seat is provided with an air outlet channel for connecting with the target container, and the air outlet channel is selectively communicated with the second cavity.

According to the one-way intake valve provided by the utility model, the bottom of the inner cavity of the valve seat is provided with a guide rail sliding sleeve, and the sliding valve body is provided with a guide rail groove toward the bottom of the valve seat, and the guide rail groove is connected to the bottom of the valve seat. The sliding sleeve of the guide rail is fitted; under the action of the first air source, the sliding valve body can move along the sliding sleeve of the guide rail.

According to the one-way air intake valve provided by the utility model, the sliding valve body further includes a first spring; one end of the first spring is connected to the bottom surface of the inner cavity of the valve cover, and the other end is connected to the bottom surface of the sliding valve body. connection at the top of the body.

According to the one-way intake valve provided by the utility model, the sliding valve body is provided with a tapered groove towards the bottom of the valve seat, and the tapered groove communicates with the first air passage; the valve core A tapered surface is provided towards the top of the sliding valve body, the tapered surface has the same inclination angle as the groove wall of the tapered groove, and the tapered surface selectively contacts with the groove wall of the tapered groove.

According to a one-way intake valve provided by the present invention, the valve core includes a housing, a sealing ring and a second spring, the second spring is arranged in the inner cavity of the housing, and the second spring The two ends are respectively connected with the bottom surface of the inner cavity of the housing and the valve seat; the tapered surface is arranged on the top of the housing, an annular groove is arranged on the tapered surface, and the sealing ring is arranged In the annular groove; when the tapered surface is in contact with the groove wall of the tapered groove, the sealing ring abuts against the groove wall of the tapered groove.

According to the one-way intake valve provided by the utility model, the bottom of the inner cavity of the valve seat is provided with a first boss, and the first boss extends around the central axis of the valve seat to form a first annular boss. platform; the casing is arranged between the first annular boss and the guide rail sliding sleeve, and the second spring is arranged between the casing and the first annular boss.

According to the one-way air intake valve provided by the utility model, the valve core is provided with an air intake hole, the air intake hole communicates with the air outlet passage, and the air intake hole is selectively connected to the first air passage. Connected.

According to a one-way air intake valve provided by the utility model, the top surface of the inner cavity of the valve cover is provided with a limiting protrusion, and the limiting protrusion protrudes from the inner cavity top surface of the valve cover and faces the The valve seat extends; when the top surface of the sliding valve body is in contact with the bottom surface of the limiting protrusion, the first air channel communicates centrally with the second air hole.

According to the one-way intake valve provided by the utility model, the limiting protrusion extends around the central axis of the valve cover to form a second annular boss; the top of the sliding valve body is provided with a second boss , the second boss is arranged coaxially with the second annular boss and the sliding valve body, and the outer diameter of the second boss is smaller than the outer diameter of the sliding valve body; the first spring One end of the first spring is connected to the bottom surface of the valve cover, and is sleeved on the second annular boss; the other end of the first spring is connected to the top of the sliding valve body, and is sleeved on the second annular boss. tower.

The utility model also provides a compressor, comprising: the one-way intake valve described in any one of the above.

The utility model provides the one-way air intake valve and the compressor. By setting the sliding valve body, the sliding valve body and the valve seat fit together to form a first cavity, and the first cavity is connected with the first gas source. The sliding valve body can It moves up and down under the action of the first air source, so that the one-way intake valve can only be controlled by the second air source to seal and conduct the one-way intake valve after the pressure of the first air source reaches a certain value. The one-way air intake valve allows one-way supplementary air intake during the compression process of the compressor without affecting the suction process of the compressor, thereby increasing the pumping air volume of the compressor under low ambient temperature conditions.

Description of drawings

In order to more clearly illustrate the technical solutions in the utility model or the prior art, the accompanying drawings that need to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings in the following description are For some embodiments of the present utility model, for those skilled in the art, other drawings can also be obtained according to these drawings on the premise of not paying creative work.

Fig. 1 is one of the structural schematic diagrams of the one-way air intake valve provided by some embodiments of the present invention under the one-way air intake working state;

Fig. 2 is the second structural diagram of the one-way air intake valve provided by some embodiments of the present invention under the one-way air intake working state;

Fig. 3 is a structural schematic diagram of the sealing state of the one-way intake valve provided by some embodiments of the present invention.

Reference signs:

110: valve seat; 111: first air hole; 112: air outlet channel; 113: guide rail sliding sleeve; 114: first boss; 120: valve cover; 121: second air hole; 122: limit bump; 130: sliding Valve body; 131: first air channel; 132: rail groove; 133: first spring; 134: tapered groove; 135: second boss; 140: valve core; 141: tapered surface; 142: shell; 143: sealing ring; 144: second spring; 145: air inlet; 150: first cavity; 160: second cavity.

Detailed ways

In order to make the purpose, technical solutions and advantages of the utility model clearer, the technical solutions in the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the utility model. Obviously, the described embodiments are the embodiment of the utility model. Some of the embodiments are novel, but not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

When the existing piston compressor is working, after the piston retreats and the expansion stroke ends, because the pressure in the compression chamber is lower than the external back pressure, the intake valve is in a sealed state, and the supplementary air cannot enter the compression chamber; Compression, exhaust, expansion and suction all take place in the same physical space, and the suction volume of the compressor is reduced, so that the injection air supply process is far away from the secondary compression process, which is not conducive to energy recovery.

In this regard, the utility model provides a one-way intake valve and a compressor to solve the problem that the existing one-way intake valve cannot meet the use requirements and cannot solve the problem of injecting air into the piston compressor.

The one-way intake valve of the present utility model is described below in conjunction with Fig. 1-Fig. 3 .

It should be noted that the application scenarios of the one-way intake valve provided by the utility model are not limited to solving the problem of injecting air for piston compressors, but can also be used as a source of air in refrigeration, chemical and other processes that use pipeline valves. Actuated one-way intake valve.

As shown in FIGS. 1-3 , the one-way intake valve provided by the utility model includes: a valve seat 110 , a valve cover 120 , a sliding valve body 130 , and a valve core 140 .

The valve seat 110 and the bonnet 120 jointly define the inner cavity of the valve, and the sliding valve body 130 and the valve core 140 are movably arranged in the inner cavity of the valve; the valve seat 110 and the sliding valve body 130 fit together to form a first cavity 150 and a second cavity 160, the valve core 140 is set in the second cavity 160; the valve seat 110 is provided with a first air hole 111, the first air hole 111 communicates with the first cavity 150, and the first air hole 111 is used to communicate with the first air source; Under the action of an air source, the sliding valve body 130 can move along the valve seat 110, so that the valve core 140 can be switched between fixed and movable states; the valve cover 120 is provided with a second air hole 121, and the second air hole 121 is used for Communicate with the second air source; the sliding valve body 130 is provided with a first air passage 131, one end of the first air passage 131 is selectively communicated with the second cavity 160, and the other end of the first air passage 131 is connected with the second air hole 121 Selective communication; the valve seat 110 is provided with an air outlet channel 112 for connecting with the target container, and the air outlet channel 112 is selectively communicated with the second cavity 160 .

Wherein, the sliding valve body 130 can move up and down along the extending direction of the valve seat 110 under the joint action of the first air source and the back pressure on the sliding valve body 130 .

As shown in FIG. 2, when the pressure Pc of the first gas source is greater than the back pressure Pb of the sliding valve body 130, under the pressure difference between the pressure Pc of the first gas source and the back pressure Pb of the sliding valve body 130, The sliding valve body 130 moves to the uppermost position, the first air channel 131 communicates with the second air hole 121, the second air source directly acts on the valve core 140, and the valve core 140 can be in an active state under the action of the second air source.

When the pressure Pi of the second gas source is lower than the pressure Pd in the compression chamber of the compressor, the bottom end of the sliding valve body 130 contacts the top of the valve core 140 to form a sealing surface; when the pressure Pi of the second gas source is greater than the compression In the case of pressure Pd in the compression chamber of the engine, the spool 140 moves downward, thereby forming a second air passage between the spool 140 and the sliding valve body 130, and the second air passage communicates with the air outlet passage 112, so that a single air passage can be realized. One-way air intake to the intake valve under certain conditions.

Wherein, the second air passage is located in the second cavity 160 , and the second air passage is jointly defined by the bottom surface of the sliding valve body 130 , the top surface of the valve core 140 , and the valve seat 110 .

As shown in Figure 3, in the state of no first air source, the sliding valve body 130 is at the lowermost position, the valve core 140 is in a fixed state, and the bottom end of the sliding valve body 130 is in contact with the top end of the valve core 140 to form a sealing surface , the one-way intake valve is in a sealed state.

In the working state of the one-way intake valve, when the pressure Pc of the first air source is less than or equal to the back pressure Pb of the sliding valve body 130, the sliding valve body 130 does not move, and the sliding valve body 130 is still at the lowest position. The intake valve is in a sealed state.

The one-way intake valve provided by the utility model, by setting the sliding valve body 130, the sliding valve body 130 fits with the valve seat 110 to form the first cavity 150, and the first cavity 150 communicates with the first air source, the sliding valve The body 130 can move up and down under the action of the first air source, so that the one-way intake valve can only be sealed and conducted by the second air source after the pressure of the first air source reaches a certain value. , to realize the one-way supplementary air intake of the one-way intake valve during the compression process of the compressor, without affecting the suction process of the compressor, thereby increasing the pumping capacity of the compressor under low ambient temperature conditions.

Wherein, the valve seat 110 is detachably connected to the valve cover 120, and the connection method may be a plug connection, a fitting connection, a screw connection and the like.

In some embodiments, the valve seat 110 is sleeved and connected with the valve cover 120 to jointly define the inner chamber of the valve.

The top of the valve cover 120 is provided with an opening, and the back pressure Pb received by the one-way intake valve directly acts on the top of the sliding valve body 130 through the opening of the valve cover 120 .

Wherein, the valve seat 110 is nested with the sliding valve body 130 to form a first cavity 150 and a second cavity 160, the first gas source directly acts on the bottom surface of the sliding valve body 130 through the first cavity 150, and the second cavity 160 The volume changes with the movement of the sliding valve body 130 .

When the sliding valve body 130 moves upward along the valve seat 110 , the volume of the second cavity 160 becomes larger, the valve core 140 has a movable space, the valve core 140 is in an active state, and the valve core 140 can move up and down along the valve seat 110 . Movement: when the sliding valve body 130 is at the lowermost position, the volume of the second cavity 160 is equal to the volume of the valve core 140 , and the valve core 140 is in a fixed state.

Wherein, when the spool 140 is in a fixed state, the top surface of the spool 140 is in contact with the bottom surface of the sliding valve body 130, and the bottom surface of the spool 140 is in contact with the bottom surface of the inner cavity of the valve seat 110, and the spool 140 has no movable space. Core 140 is inactive.

Wherein, the communication state between the two ends of the first air channel 131 and the second air hole 121 and the second cavity 160 changes as the position of the sliding valve body 130 changes; when the sliding valve body 130 is at the lowermost position, the second One air channel 131 is disconnected from the second air hole 121 and the second cavity 160, and during the upward movement of the sliding valve body 130, the first air channel 131 communicates with the second cavity body 160; the sliding valve body 130 moves upward to a certain height In the case of , the first air passage 131 communicates with the second air hole 121 , and the second air source acts on the top of the valve core 140 through the second air hole 121 , the first air passage 131 , and the second air passage in sequence.

Wherein, the target container may be a container or pipeline containing gas or liquid.

Wherein, when the sliding valve body 130 is located at the lowermost position, the air outlet channel 112 is not communicated with the second cavity 160, and moves on the sliding valve body 130 until the bottom surface of the sliding valve body 130 is separated from the top surface of the valve core 140. In the case of , the air outlet channel 112 communicates with the second cavity 160 .

In some embodiments, the bottom of the inner cavity of the valve seat 110 is provided with a guide rail sliding sleeve 113, and the sliding valve body 130 is provided with a guide rail groove 132 towards the bottom of the valve seat 110, and the guide rail groove 132 fits with the guide rail sliding sleeve 113; Under the action of the air source, the sliding valve body 130 can move along the guide rail sliding sleeve 113 .

In this embodiment, the guide rail sliding sleeve 113 cooperates with the guide rail groove 132 to define the moving path of the sliding valve body 130 .

Further, the sliding valve body 130 also includes a first spring 133; one end of the first spring 133 is connected to the bottom surface of the inner cavity of the valve cover 120, and the other end is connected to the top end of the sliding valve body 130 for moving and resetting the sliding valve body 130. .

When the pressure Pc of the first air source is greater than the sum of the back pressure Pb, the elastic force of the first spring 133 and the gravity of the sliding valve body 130 itself, the sliding valve body 130 can move upward along the guide rail sliding sleeve 113; When the pressure Pc of the source is less than the sum of the back pressure Pb, the elastic force of the first spring 133 and the gravity of the sliding valve body 130 itself, the sliding valve body 130 moves down along the guide rail sliding sleeve 113 .

Further, the sliding valve body 130 is provided with a tapered groove 134 toward the bottom of the valve seat 110, and the tapered groove 134 communicates with the first air passage 131; The inclination angle of the shaped surface 141 and the groove wall of the tapered groove 134 is the same.

In this embodiment, the contact area between the sliding valve body 130 and the valve core 140 is increased by setting the opposite surface of the sliding valve body 130 and the valve core 140 as a slope with an inclination angle, thereby increasing the sealing effect and increasing the sealing effect of the second air passage. length, increase the area where the second gas source acts on the valve core 140, and improve the reliability of the one-way intake valve.

Wherein, the tapered surface 141 is in selective contact with the groove wall of the tapered groove 134. When the sliding valve body 130 is located at the lowermost position, the tapered surface 141 is in contact with the groove wall of the tapered groove 134. When the body 130 moves upward, the tapered surface 141 contacts or separates from the groove wall of the tapered groove 134 under the action of the air pressure received by the valve core 140 .

Further, the valve core 140 includes a housing 142, a sealing ring 143 and a second spring 144, the second spring 144 is arranged in the inner chamber of the housing 142, and the two ends of the second spring 144 are connected to the housing 142 and the valve seat 110 respectively. The bottom surface of the inner cavity is connected; the tapered surface 141 is arranged on the top of the housing 142, the tapered surface 141 is provided with an annular groove, and the sealing ring 143 is arranged in the annular groove; the groove wall between the tapered surface 141 and the tapered groove 134 In the case of contact, the sealing ring 143 abuts against the groove wall of the tapered groove 134 .

Wherein, the outer wall of the housing 142 is in sliding contact with the inner cavity wall of the guide rail sliding sleeve 113 , and the top of the housing 142 is in selective contact with the bottom surface of the sliding valve body 130 .

In this embodiment, the sealing performance of the one-way intake valve is increased by setting the sealing ring 143 , and the second spring 144 is set so that the valve core 140 can be moved back in the active state.

Further, the bottom of the inner cavity of the valve seat 110 is provided with a first boss 114, and the first boss 114 extends around the central axis of the valve seat 110 to form a first annular boss; the housing 142 is arranged between the first annular boss and the Between the sliding sleeves 113 of the guide rail, the second spring 144 is disposed between the casing 142 and the first annular boss.

In this embodiment, one end of the second spring 144 is connected to the top surface of the inner cavity of the housing 142, the other end of the second spring 144 is connected to the bottom of the inner cavity of the valve seat 110, and the second spring 144 is sleeved on the first The outer side of the annular boss facilitates the installation of the second spring 144 while limiting the rebound path of the second spring 144 .

In some embodiments, the second spring 144 is detachably connected to the housing 142 and the valve seat 110 , and the connection method may be clamping connection, bolt connection and the like.

Further, the valve core 140 is provided with an air inlet 145 , the air inlet 145 communicates with the air outlet passage 112 , and the air inlet 145 selectively communicates with the first air passage 131 .

In this embodiment, by providing the air inlet hole 145, it can be used as a gas fluid channel of the second gas source, and at the same time, the air inlet resistance is reduced.

In some embodiments, there may be multiple air intake holes 145 , and the multiple air intake holes 145 are evenly distributed around the central axis of the valve core 140 .

In some embodiments, the air intake hole 145 can be in various shapes, and the air intake hole 145 is symmetrical with respect to the central axis of the valve core 140 .

Wherein, when the top of the valve core 140 is separated from the bottom surface of the sliding valve body 130, the second air hole 121, the first air channel 131, the second air channel, the air inlet hole 145, and the air outlet channel 112 are connected in sequence; When the top end of 140 is in contact with the bottom surface of the sliding valve body 130 , the first air channel 131 is not in communication with the air inlet 145 .

Further, the top surface of the inner cavity of the valve cover 120 is provided with a limit projection 122, and the limit projection 122 protrudes from the top surface of the inner cavity of the valve cover 120 and extends toward the valve seat 110; between the top surface of the sliding valve body 130 and the When the bottom surface of the limiting protrusion 122 is in contact, the first air channel 131 communicates with the second air hole 121 centrally.

In this embodiment, the limit protrusion 122 acts as a limit to the upward movement height of the sliding valve body 130, preventing the upward movement height of the sliding valve body 130 from being too high so that the first air passage 131 is disconnected from the second air hole 121 , to ensure the communication state between the first air channel 131 and the second air hole 121 .

Further, the limit protrusion 122 extends around the central axis of the valve cover 120 to form a second annular boss; the top of the sliding valve body 130 is provided with a second boss 135, and the second boss 135 is connected to the second annular boss, The sliding valve body 130 is arranged coaxially, and the outer diameter of the second boss 135 is smaller than the outer diameter of the sliding valve body 130; one end of the first spring 133 is connected to the bottom surface of the valve cover 120, and is sleeved on the second annular boss; The other end of the first spring 133 is connected to the top of the sliding valve body 130 and sleeved on the second boss 135 .

In this embodiment, by setting the second annular boss and the second boss 135, the installation of the first spring 133 is facilitated, and at the same time, the movement path of the first spring 133 is restricted to prevent the first spring 133 from rebounding during the rebound process. out of shape.

During use, as shown in Figure 2, the first air source enters the first cavity 150 through the first air hole 111, when the pressure Pc of the first air source in the first cavity 150 received by the sliding valve body 130 is greater than the sliding valve body 130 When the valve body 130 is subjected to the sum of the back pressure Pb and the elastic force of the first spring 133, the guide rail groove 132 of the sliding valve body 130 moves upward along the guide rail sliding sleeve 113 of the valve seat 110, and is moved upward by the stop protrusion of the valve cover 120. The block 122 is limited, and at this time the second air hole 121 of the valve cover 120 communicates with the first air channel 131 of the sliding valve body 130 .

At this time, the valve core 140 can move back and forth under the action of the first gas source in the first air channel 131 and the gas pressure in the gas outlet channel 112 on the valve seat 110 .

When the pressure Pi of the second gas source flowing through the second air hole 121 and the first air channel 131 is higher than the gas pressure Pc in the gas outlet channel 112 of the valve seat 110, the second spring 144 is compressed, and the valve core 140 moves downward and is limited by the first annular boss of the valve seat 110 .

A circular gas channel is formed between the top of the valve core 140 and the tapered groove 134 of the sliding valve body 130, and the second gas source passes through the second air hole 121, the first air channel 131, the second air channel, and the air inlet in sequence. 145. The air outlet channel 112 enters the target container.

As shown in Figure 3, when the pressure Pi of the second gas source flowing through the second air hole 121 and the first air channel 131 in turn is not higher than the gas force Pd in the air outlet channel 112 of the valve seat 110, the valve core 140 Under the action of the elastic force of the second spring 144, the tapered groove 134 of the sliding valve body 130 and the sealing ring 143 form a seal, and the second gas source cannot enter the target container.

The first air source enters the first cavity 150 through the first air hole 111 on the valve seat 110, when the pressure Pc in the first cavity 150 received by the sliding valve body 130 is not greater than the back pressure Pb received by the sliding valve body 130 and In the case of the sum of the elastic forces of the first spring 133, the guide rail groove 132 of the sliding valve body 130 moves downward along the guide rail sleeve 113 of the valve seat 110, and is limited by the guide rail sleeve 113 of the valve seat 110, and the valve cover The second air hole 121 on 120 is not in communication with the first air channel 131 of the sliding valve body 130 .

At this time, the valve core 140 is closely matched with the sliding valve body 130 and the valve seat 110, and cannot move up and down. The tapered groove 134 of the sliding valve body 130 and the sealing ring 143 form a seal, no matter how high the pressure Pc of the first air source is, Neither can enter the target container.

The one-way air intake valve provided by the utility model, by setting the movable valve body and the valve core 140, the one-way air intake valve can be controlled by the second air source only after the pressure of the first air source reaches a certain value. The sealing and conduction of the air valve realizes the one-way supplementary air intake of the one-way intake valve during the compression process of the compressor, and does not affect the suction process of the compressor, thereby improving the performance of the compressor under low ambient temperature conditions. of the pump volume.

The utility model also provides a compressor, including any one-way intake valve mentioned above.

In the compressor provided by the utility model, through the one-way air intake valve, after the pressure of the first air source reaches a certain value, the sealing and conduction of the one-way air intake valve can be controlled by the second air source, and the one-way air intake valve is realized. The one-way supplementary air intake of the air valve during the compression process of the compressor does not affect the suction process of the compressor, thereby increasing the pumping capacity of the compressor under low ambient temperature conditions.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit of the technical solutions of the various embodiments of the present invention. and range.

Claims (10)

1. A one-way intake valve, characterized in that, comprising: valve seat, valve cover, sliding valve body, valve core; The valve seat and the valve cover jointly define a valve inner cavity, and the sliding valve body and the valve core are movably arranged in the valve inner cavity; The valve seat fits with the sliding valve body to form a first cavity and a second cavity, and the valve core is arranged in the second cavity; The valve seat is provided with a first air hole, the first air hole communicates with the first cavity, and the first air hole is used to communicate with the first air source; under the action of the first air source, the The sliding valve body can move along the valve seat, so that the valve core can be switched between fixed and movable states; The valve cover is provided with a second air hole, and the second air hole is used to communicate with the second air source; the sliding valve body is provided with a first air passage, and one end of the first air passage is connected to the second chamber The body is selectively communicated, and the other end of the first airway is selectively communicated with the second air hole; An air outlet channel is provided on the valve seat, the air outlet channel is used to connect with the target container, and the air outlet channel is selectively communicated with the second cavity. 2. The one-way intake valve according to claim 1, characterized in that, The bottom of the inner cavity of the valve seat is provided with a guide rail sliding sleeve, and the sliding valve body is provided with a guide rail groove towards the bottom of the valve seat, and the guide rail groove is fitted with the guide rail sliding sleeve; Under the action of the first air source, the sliding valve body can move along the guide rail sliding sleeve. 3. The one-way intake valve according to claim 2, characterized in that, The sliding valve body also includes a first spring; One end of the first spring is connected to the bottom surface of the inner cavity of the valve cover, and the other end is connected to the top end of the sliding valve body. 4. The one-way intake valve according to claim 2, characterized in that, The sliding valve body is provided with a tapered groove towards the bottom of the valve seat, and the tapered groove communicates with the first air passage; The valve core is provided with a tapered surface towards the top of the sliding valve body, the tapered surface has the same inclination angle as the groove wall of the tapered groove, and the tapered surface and the groove wall of the tapered groove are selected touch sexually. 5. The one-way intake valve according to claim 4, characterized in that, The valve core includes a housing, a sealing ring and a second spring, the second spring is arranged in the inner cavity of the housing, and the two ends of the second spring are connected to the housing and the valve seat respectively. Bottom connection of inner cavity; The tapered surface is arranged on the top end of the housing, the tapered surface is provided with an annular groove, and the sealing ring is arranged in the annular groove; When the tapered surface is in contact with the groove wall of the tapered groove, the sealing ring abuts against the groove wall of the tapered groove. 6. The one-way intake valve according to claim 5, characterized in that, The bottom of the inner cavity of the valve seat is provided with a first boss, and the first boss extends around the central axis of the valve seat to form a first annular boss; The housing is disposed between the first annular boss and the guide rail sliding sleeve, and the second spring is disposed between the housing and the first annular boss. 7. The one-way intake valve according to claim 4, characterized in that, The valve core is provided with an air inlet, the air inlet communicates with the air outlet passage, and the air inlet selectively communicates with the first air passage. 8. The one-way intake valve according to claim 3, characterized in that, The top surface of the inner cavity of the valve cover is provided with a limit projection, and the limit projection protrudes from the top surface of the inner cavity of the valve cover and extends toward the valve seat; When the top surface of the sliding valve body is in contact with the bottom surface of the limiting protrusion, the first air channel communicates centrally with the second air hole. 9. The one-way intake valve according to claim 8, characterized in that, The limiting protrusion extends around the central axis of the valve cover to form a second annular boss; the top end of the sliding valve body is provided with a second boss, and the second boss is connected to the second annular boss. The platform and the sliding valve body are arranged coaxially, and the outer diameter of the second boss is smaller than the outer diameter of the sliding valve body; One end of the first spring is connected to the bottom surface of the valve cover, and is sleeved on the second annular boss; the other end of the first spring is connected to the top end of the sliding valve body, and is sleeved on the the second boss. 10. A compressor, characterized by comprising the one-way intake valve according to any one of claims 1 to 9.

Images