CN218796953U

CN218796953U - Screw injection valve

Info

Publication number: CN218796953U
Application number: CN202222871876.6U
Authority: CN
Inventors: 刘耀鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-10-28
Filing date: 2022-10-28
Publication date: 2023-04-07
Anticipated expiration: 2032-10-28

Abstract

The utility model provides a screw injection valve, which is used for injecting liquid materials and comprises a flow passage valve body, a screw component, a firing pin component and a piezoelectric component; the runner valve body is provided with a first runner, the movable end of the screw rod assembly is at least partially arranged in the first runner so as to drive the liquid material to flow, and the striker assembly is arranged in the runner valve body; the firing pin assembly comprises a firing pin and an elastic piece, the firing pin is arranged in the flow passage valve body, the firing pin is movably plugged in a first liquid outlet of the first flow passage, and the elastic piece is sleeved on the peripheral side of the firing pin to provide elasticity for the reciprocating motion of the firing pin; the piezoelectric component is arranged at one end of the firing pin and used for driving the firing pin to reciprocate. The liquid material of the utility model enters the first flow channel, rotates to the first liquid outlet through the screw rod component, and then is regularly sprayed out through the reciprocating motion of the firing pin, so that the glue is uniformly dispensed; the piezoelectric component directly acts on the firing pin and is matched with the elastic component to realize the reciprocating motion of the firing pin, so that complex structures such as a lever, a spring and the like are omitted.

Description

Screw injection valve

Technical Field

The utility model belongs to liquid trace injection valve field especially indicates a screw rod injection valve.

Background

The liquid micro-injection valve is a device capable of injecting a trace amount of liquid material at a high speed, and can be applied to the field of microelectronic packaging. The liquid micro-injection valve can be classified into a pneumatic type and a piezoelectric type according to different power sources.

In the related art, the liquid adhesive enters the first flow channel from the material cylinder and is finally sent to the firing pin, the impact effect is poor, the solder paste cannot be stably and accurately ejected, and the problem of uneven dispensing is easily caused.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the utility model is to solve not enough in the correlation technique to a certain extent at least, provide a screw rod injection valve.

In order to solve the above technical problem, an embodiment of the present invention provides a screw injection valve for injecting a liquid material, including a flow passage valve body, a screw assembly, a firing pin assembly, and a piezoelectric assembly; the runner valve body is provided with a first runner, the movable end of the screw assembly is at least partially arranged in the first runner so as to drive the liquid material to flow, and the striker assembly is arranged in the runner valve body;

the firing pin assembly comprises a firing pin and an elastic piece, the firing pin is arranged in the flow passage valve body, the firing pin is movably blocked at the first liquid outlet of the first flow passage, and the elastic piece is sleeved on the peripheral side of the firing pin so as to provide elasticity for the reciprocating motion of the firing pin; the piezoelectric component is arranged at one end of the firing pin and used for driving the firing pin to reciprocate.

In some embodiments, the striker assembly further comprises a striker mount mounted within the runner valve body;

the elastic member is arranged on the striker fixing member, and the striker penetrates through the elastic member and is arranged on the striker fixing member.

In some embodiments, the striker fixing member includes a body having a cavity and a fixing portion disposed at one end of the body;

the elastic piece is arranged on the fixing part, and the firing pin is arranged in the cavity.

In some embodiments, the body has a first side bore and a second exit port;

the first side hole is formed in one side of the body, the first side hole is communicated with the first liquid outlet and the cavity respectively, and the second liquid outlet is formed in one end, far away from the fixing portion, of the body and communicated with the cavity.

In some embodiments, one side of the striker is provided with a second side hole and a second flow passage;

one end of the second flow passage is communicated with the second side hole, and the other end of the second flow passage extends to the bottom end of the firing pin and is aligned with the second liquid outlet; when the striker compresses the elastic member to a preset position, the second side hole is aligned with the first side hole.

In some embodiments, the striker assembly further comprises a retainer; the flow passage valve body is provided with a fixing hole, the first notch, the second notch and the fixing hole are aligned, one end of the positioning piece extends to the fixing hole, and the other end of the positioning piece penetrates through the first notch to the second notch to be clamped with the second notch.

In some embodiments, the screw assembly includes a driving member and a screw, the screw is at least partially disposed in the first flow passage, and an output end of the driving member is connected to an end of the screw away from the first flow passage.

In some embodiments, the screw assembly further includes a screw stator disposed in the first flow passage and sleeved around the screw.

In some embodiments, the piezoelectric assembly comprises a piezoelectric ceramic, an adjustment member, and a piezoelectric ceramic wafer; the adjusting piece is arranged at one end of the piezoelectric ceramic, the other end of the piezoelectric ceramic is arranged at one end of the firing pin, and the piezoelectric ceramic pressing piece is arranged between the adjusting piece and the piezoelectric ceramic.

In some embodiments, the screw jet valve further comprises a feed member mounted to the runner valve body.

The embodiment of the utility model provides a beneficial effect lies in: the liquid material in the utility model enters the first flow channel, rotates to the first liquid outlet through the screw rod component, and then is regularly sprayed out through the reciprocating motion of the firing pin, so that the glue is uniformly dispensed; the piezoelectric component directly acts on the firing pin and is matched with the elastic component to realize the reciprocating motion of the firing pin, so that complex structures such as a lever, a spring and the like are omitted.

Drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic diagram of a first angle structure of a screw injection valve according to an embodiment of the present invention;

fig. 2 is a second angle structural schematic diagram of the screw injection valve provided in the embodiment of the present invention;

fig. 3 isbase:Sub>A cross-sectional view of the present invention taken along the linebase:Sub>A-base:Sub>A of fig. 1;

fig. 4 is a schematic structural diagram of a flow passage valve body according to an embodiment of the present invention;

fig. 5 is a cross-sectional view of the present invention taken along the line B-B of fig. 4;

fig. 6 is a schematic structural diagram of a striker assembly according to an embodiment of the present invention;

fig. 7 is a cross-sectional view of the present invention taken along the line C-C of fig. 6;

fig. 8 is a schematic structural diagram of a striker according to an embodiment of the present invention;

fig. 9 is a schematic structural view of a striker fixing member according to an embodiment of the present invention;

fig. 10 is a schematic structural view of a screw assembly provided in an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a piezoelectric assembly according to an embodiment of the present invention;

fig. 12 is a schematic structural diagram of a cover member according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to be used for explaining the present invention, but should not be construed as limiting the present invention, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 to 3, the present invention provides a screw injection valve for injecting liquid material, including a flow passage valve body 1, a screw assembly 2, a firing pin assembly 3 and a piezoelectric assembly 4; the flow passage valve body 1 is provided with a first flow passage 101, the movable end of the screw rod component 2 is at least partially arranged in the first flow passage 101 so as to drive the liquid material to flow, and the firing pin component 3 is arranged in the flow passage valve body 1; the striker assembly 3 comprises a striker 301 and an elastic member 302, the striker 301 is disposed in the flow channel valve body 1, the striker 301 is movably plugged in the first liquid outlet 1011 of the first flow channel 101, and the elastic member 302 is sleeved on the peripheral side of the striker 301 to provide an elastic force for the reciprocating motion of the striker 301; the piezoelectric element 4 is disposed at one end of the striker 301, and is configured to drive the striker 301 to reciprocate.

The liquid material in the utility model enters the first flow channel 101, rotates to the first liquid outlet 1011 through the screw rod component 2, and then is regularly sprayed out through the reciprocating motion of the firing pin 301, so that the glue is uniformly dispensed; the piezoelectric assembly 4 directly acts on the striker 301, and the elastic member 302 is matched to realize the reciprocating motion of the striker 301, so that complex structures such as a lever, a spring and the like are omitted.

The liquid material may be liquid paste, solder paste, or other liquid material, and is not particularly limited herein. The liquid material in this embodiment is exemplified by solder paste,

it is understood that the screw injection valve further includes a feed member 5, the feed member 5 is mounted on the runner valve body 1, and a discharge port of the feed member 5 is communicated with the first runner 101. A luer 501 can be connected between the inlet piece 5 and the flow channel valve body 1 for the inlet. The feed members 5 may be provided as containers for storing liquid material such as liquid glue, solder paste or other liquid material, but of course, each feed member 5 stores one type of liquid material, which is convenient for a user to replace the required liquid material. Of course, in some embodiments, the feeding member 5 can also be used as a pipe externally connected to an injection device, and the liquid material is injected into the feeding member 5 to flow the feeding member 5 into the flow valve body 1. The concrete structure of the feeding member 5 can be selected according to the actual requirement, the feeding member 5 in this embodiment is exemplified by a rubber cylinder,

referring to fig. 4 to 5 together, in some embodiments, the flow valve body 1 includes a valve body main body 102, a feeding channel 103 is provided in the valve body main body 102, the feeding channel 103 is disposed parallel to a height direction of the flow valve body 1, and one end of the rubber cylinder is communicated with the feeding channel 103 to feed solder paste into the feeding channel 103 through the rubber cylinder; the valve body main body 102 further comprises a first flow channel 101 communicated with the feed channel 103 and an accommodating cavity 104 communicated with the first flow channel 101, the feed channel 103 is communicated with the first flow channel 101 at the middle section of the first flow channel 101, one end of the first flow channel 101 is connected with the outside, the accommodating cavity 104 is communicated with a first liquid outlet 1011 at the other end of the first flow channel 101, at least part of a movable end of the screw assembly 2 is arranged at one end of the first flow channel 101 connected with the outside, the striker assembly 3 is arranged in the accommodating cavity 104, the striker 301 of the striker assembly 3 is movably plugged in the first liquid outlet 1011, the elastic element 302 is sleeved on the periphery of the striker 301, the piezoelectric assembly 4 is arranged in the accommodating cavity 104, and the piezoelectric assembly 4 is arranged at one end of the striker 301 far away from the first flow channel 1011. The solder paste of this embodiment flows to the first flow path 101 through the feed path 103, and the screw assembly 2 rotates to drive the solder paste entering the first flow path 101 to flow to the first liquid outlet 1011, and then to eject it regularly by the reciprocating motion of the striker 301. Compared with the runner and the valve body which are separately arranged in the related art, the runner valve body 1 in the embodiment has the advantages that the runner and the valve body are arranged into an integrated structure, the size is compact, the structure is simple, the mounting positioning precision is reduced, and the assembly is convenient.

In some embodiments, the first flow channel 101 and the accommodating cavity 104 form an included angle therebetween, so that the first flow channel 101 and the accommodating cavity 104 have a certain slope to facilitate the flow of the solder paste; preferably, the first flow channel 101 and the feeding channel 103 are also provided with an included angle, so as to avoid the situation that the solder paste enters the first flow channel 101 from the feeding member, and the channel finally sent to the striker 301 is continuously communicated all the time, which is easy to cause the blockage of the channel.

Referring to fig. 10, in some embodiments, the screw assembly 2 includes a driving member 201 and a screw 202, the screw 202 is at least partially disposed in the first flow channel 101, and an output end of the driving member 201 is connected to an end of the screw 202 away from the first flow channel 101 to drive the screw 202 to rotate in the first flow channel 101, so as to transport solder paste to the first liquid outlet 1011. The driving member 201 in this embodiment is exemplified by a motor, and it can be understood that, in order to facilitate installation of the motor and avoid occupying space, the installation portion 105 is disposed on one side of the flow passage valve body 1, the installation portion 105 is disposed on one end periphery side of the first flow passage 101 communicating with the outside, and the motor is fixed on the installation portion 105 through the motor frame 203 so as to form an included angle on a horizontal plane, and the installation of the screw 202 is also facilitated by matching with the inclination of the first flow passage 101. The driving member 201 may further include a driving member such as an air cylinder or a motor, and may be adjusted as necessary, and the type of the driving member 201 is not particularly limited.

In this embodiment, the outer side of the screw 202 is sleeved with a bearing 204 and a flooding plug 205, wherein the bearing 204 is disposed between the inner wall of the first flow channel 101 and the outer wall of the screw 202 to play a supporting role, support the rotation of the screw 202, reduce the friction coefficient in the movement process, and ensure the rotation precision. The flood plug 205 functions to radially support, movably position and isolate the screw 202 from the inner wall of the first flow channel 101, preventing scratches, abrasions, etc. from occurring, and the like, the screw 202 is located within the first flow channel 101. Of course, a flood plug gasket 206 is also included, disposed between the flood plug 205 and the raised structure of the screw 202. It should be noted that, since the plunger 205 is disposed at the interface between the first flow channel 101 and the feed channel 103, the plunger 205 is provided with an opening 2051, so that the solder paste of the feed channel flows into the first flow channel 101 through the opening 2051.

In some embodiments, the screw assembly 2 further includes a screw stator 207, and the screw stator 207 is disposed in the first flow channel 101 and sleeved around the screw 202. In this embodiment, the screw stator 207 is disposed on a side of the flooding plug 205 away from the bearing 204, and the screw stator 207 is a rubber member, and has a good self-sealing property.

Specifically, the first flow channel 101 includes an installation section 1012, a feeding section 1013, and a discharging section 1014, the installation section 1012, the feeding section 1013, and the discharging section 1014 are sequentially arranged from the sidewall of the valve body 102 toward the accommodation cavity 104, the feeding channel 103 is communicated with the feeding section 1013, and the discharging section 1014 is communicated with the accommodation cavity 104. At this time, the screw 202 extends from the installation section 1012 to the feeding section 1013, the bearing 204 is disposed at the junction of the installation section 1012 and the feeding section 1013, the flooding gasket 206 and the flooding plug 205 are disposed at the feeding section 1013, and the screw stator 207 is disposed at the feeding section 1013. The first flow channel 101 in this embodiment is a longitudinal cylindrical shape, but may be a longitudinal square cylindrical shape or other shapes in some embodiments, and the shape is not particularly limited herein.

Wherein, the installation section 1012 is located at the end of the first flow channel 101 connected with the outside, for the screw 202 to extend into, and in order to match the installation of the motor frame 203, the cross-sectional area of the installation section 1012 is larger than that of the feeding section 1013, and of course, the cross-sectional area of the feeding section 1013 may also be larger than that of the discharging section 1014; it will be appreciated that to facilitate installation of the bearing 204, the flood plug shim 206, the flood plug 205, and the screw stator 207, the size of the mounting section 1012 matches the size of the bearing 204, the size of the feed section 1013 matches the size of the flood plug shim 206 and the flood plug 205, and the size of the feed section 1013 matches the size of the screw stator 207.

In some embodiments, the inner wall of the discharging section 1014 has a clamping portion 10141, and the outer wall of the screw stator 207 has a clamping portion 2071 matched with the clamping portion 10141, so as to prevent the movement of the screw stator 207 from affecting the sealing performance. The clamping part 10141 can be a groove, and the fastening part 2071 can be a protruding structure matched with the groove; of course, the locking portion 10141 may also be a protrusion structure, and the fastening portion 2071 may be a groove matching with the protrusion structure.

Referring to fig. 6-9, in some embodiments, the striker assembly 3 further includes a striker securing member 303 disposed within the receiving cavity 104; the elastic member 302 is disposed on the striker fixing member 303, the striker 301 passes through the elastic member 302 and is mounted on the striker fixing member 303, and the striker fixing member 303 is fixed in the accommodating cavity 104 for fixing the elastic member 302 and the striker 301. Preferably, the elastic member 301 is a spring plate, and the spring plate is preferably 2 pieces.

Specifically, the striker fixing member 303 includes a body 3031 having a cavity 30311 and a fixing portion 3032 provided at one end of the body 3031; the striker 301 is arranged in the cavity 30311 of the body 3031 through the elastic member 302, and the movement of the striker 301 is limited by the cooperation of the elastic member 302 and the piezoelectric assembly 4, so as to ensure that the striker 301 reciprocates in the cavity 30311.

The body 3031 is provided with a first side hole 30312 and a second liquid outlet 30313; the first side hole 30312 is disposed at one side of the main body 3031, the first side hole 30312 is respectively communicated with the first liquid outlet 1011 and the cavity 30311, the second liquid outlet 30313 is disposed at one end of the main body 3031 (i.e., the bottom end of the main body 3031) far away from the fixing portion 3032 and is communicated with the cavity 30311, and at this time, the solder paste can flow to the first side hole 30312 and the cavity 30311 through the first liquid outlet 1011, and the solder paste is ejected from the second liquid outlet 30313 through the reciprocating motion of the striker 301.

In some embodiments, the striker 301 has a second side hole 3011 and a second flow channel 3012 formed on one side; one end of the second flow passage 3012 is communicated with the second side hole 3011, and the other end of the second flow passage 3012 extends to the bottom end of the striker 301 and is aligned with the second liquid outlet 30313; when the striker 301 compresses the elastic member 302 to a preset position, the second side hole 3011 is aligned with the first side hole 30312. The solder paste in the rubber barrel enters the first side hole 30312 of the firing pin fixing member 303 and the second side hole 3011 of the firing pin 301 through the rotation of the screw 202, then the piezoelectric assembly 4 acts on the firing pin 301 after being electrified and transmits the thrust to the firing pin 301, and the firing pin 301 moves downwards to eject the solder paste from the second liquid outlet 30313; then the piezoelectric assembly 4 is powered off, the striker 301 rebounds through the pre-pressure of the elastic piece 302, the piezoelectric assembly 4 is powered on again after rebounding, the striker 301 forms high-speed piston reciprocating motion, instantaneous high pressure is formed through regular reciprocating motion of the striker 301, and solder paste is sprayed out of the second liquid outlet 30313.

In some embodiments, the accommodating cavity 104 sequentially includes a first accommodating cavity 1041, a second accommodating cavity 1042 and a third accommodating cavity 1043 along the height direction of the flow passage valve body 1, the striker fixing member 303 extends from the second accommodating cavity 1042 to the third accommodating cavity 1043, and the piezoelectric assembly 4 extends from the first accommodating cavity 1041 to the second accommodating cavity 1042 and abuts against the striker 301. It should be noted that, in order to facilitate the installation of the piezoelectric element 4 and the striker fixing member 303, the cross-sectional area of the first cavity 1041 is larger than that of the second cavity 1042, and the cross-sectional area of the second cavity 1042 is larger than that of the third cavity 1043.

In some embodiments, the flow passage valve body 1 has a fixing hole 106, and the fixing hole 106 is disposed at one end of the second housing 1042 near the third housing 1043; the firing pin assembly 3 further includes a retainer 304; the fixing portion 3032 has a first notch 30322, the striker 301 has a second notch 3013, the first notch 30322 and the second notch 3013 are aligned with the fixing hole 106, one end of the positioning member 304 extends to the fixing hole 106, and the other end of the positioning member 304 passes through the first notch 30322 to the second notch 3013 to be clamped with the second notch 3013. The positioning element 304 in this embodiment is used for circumferentially positioning the striker fixing element 303, the striker 301 and the flow channel valve body 1, so as to ensure that the first liquid outlet 1011, the first side hole 30312 and the second side hole 3011 coincide with each other, which is convenient for glue to flow. The positioning member 304 is preferably a positioning pin, and other positioning members such as a positioning rod may be used in other embodiments.

Referring to fig. 11, in some embodiments, the piezoelectric element 4 includes a piezoelectric ceramic 401, an adjusting member 402, and a piezoelectric ceramic wafer 403; the adjusting part 402 is disposed at one end of the piezoelectric ceramic 401, the adjusting part 402 is located in the first accommodating cavity 1041, the other end of the piezoelectric ceramic 401 is disposed at one end of the striker 301, and the piezoelectric ceramic pressing sheet 403 is disposed between the adjusting part 402 and the piezoelectric ceramic 401. When piezoelectric ceramic 401 is energized, it expands, pressing piezoelectric ceramic pad 403 against striker 301. The adjusting member 402 is connected to the top end of the piezoelectric ceramic 401, and the adjusting member 402 can be adjusted up and down to adjust the tightness of the piezoelectric ceramic 401, so as to further adjust the tightness of the striker 301, so that the passage between the first flow channel 101 and the first side hole 30312 and the second side hole 3011 is unobstructed and dispensing is uniform. Preferably, the adjustment member 402 is an adjustment screw.

In some embodiments, the flow passage valve further comprises a heating component 6 and a cooling component 7, the heating component 6 and the cooling component 7 are disposed on the outer side of the flow passage valve body 1, and the temperature in the first flow passage 101 can be ensured to be relatively constant through the coordination of the heating component 6 and the cooling component 7. Because the runner valve body 1 formula structure as an organic whole, its whole size is less, can dispose less power heating element 6 and refrigeration subassembly 7 can to the energy saving need not to set up heating element 6 and refrigeration subassembly 7 respectively to runner and valve body, has reduced the total part number, and the structure is more simple, and it is more reasonable to lay wire.

In some embodiments, the heat generating component 6 includes a heat generating member (not shown in the drawings), the heat generating member is disposed outside the flow channel valve body 1, and the heat generating member is disposed on the same side as the screw component 2, and is used for heating the flow channel valve body 1, so as to ensure the flow stability of solder paste, and avoid easy channel blockage and uneven dispensing.

In some embodiments, the heat generating component 6 further includes a heat generating component fixing component 601, the heat generating component fixing component 601 is disposed on the outer side of the flow channel valve body 1 and on the same side as the screw component 2, and the heat generating component is mounted on the heat generating component fixing component 601 to prevent the heat generating component from falling off or being connected unstably. Preferably, the heating member is a heating sheet.

In some embodiments, the refrigeration component 7 includes the refrigeration piece 701, the refrigeration piece 701 is disposed outside the flow channel valve body 1, and the refrigeration piece 701 and the screw component 2 are respectively located at two adjacent sides of the flow channel valve body 1, so as to cool and dissipate heat of the flow channel valve body 1, and cooperate with the heating component 6 to ensure that the temperature in the flow channel valve body 1 is relatively constant, so as to ensure the flow stability of solder paste, and avoid easy blockage of a channel and uneven dispensing.

In some embodiments, the refrigeration assembly 7 further includes a heat dissipation structure 702, a portion of the heat dissipation structure 702 is connected to the flow passage valve body 1, and the refrigeration member 701 is disposed on the heat dissipation structure 702. On the one hand, the heat dissipation structure 702 may be used to fix the cooling element 701, and on the other hand, the heat dissipation structure 702 may also dissipate heat into the air quickly. Preferably, the cooling member 701 is a cooling plate.

Specifically, the heat dissipation structure 702 includes a heat dissipation member 7021 and a baffle 7022, the baffle 7022 is connected to the flow channel valve body 1, the baffle 7022 in this embodiment is square, and one side of the baffle 7022 is fixed to the flow channel valve body 1 and is used to fix the heat dissipation member 7021; the heat dissipation member 7021 is disposed on the baffle 7022, and the refrigeration member 701 is disposed between the heat dissipation member 7021 and the flow passage valve body 1.

Preferably, the heat dissipating member 7021 has a plurality of heat dissipating grooves 70211, and the plurality of heat dissipating grooves 70211 are sequentially spaced along the length direction of the heat dissipating member 7021, so as to perform a rapid cooling function by guiding heat to the air through the heat dissipating grooves 70211. A through hole is further formed in the heat dissipation groove 70211, and is used for fixing the refrigeration sheet 701 on the heat dissipation member 7021.

In some embodiments, the solder paste dispensing device further includes a temperature sensor, the temperature sensor is disposed on the flow channel valve body 1, and the temperature sensor is used to monitor the temperature of the flow channel valve body 1, so as to ensure that the temperature is at a temperature suitable for solder paste dispensing. Of course, the temperature can be adjusted according to different requirements. The temperature sensor may also be disposed on the heating element fixing member 601 and/or the heat dissipating member 7021. Of course, in some embodiments, a sensor is provided on the heat generating component 6 and/or the cooling component 7 for monitoring the temperature of the heat generating component 6 and/or the cooling component 7.

Referring also to fig. 12, in some embodiments, the screw injection valve further includes a cover member 8, the cover member 8 is disposed at one side of the receiving cavity 104; the cover 8 has a heat dissipation chamber 801, an air inlet hole 802 and an air outlet hole 802, the heat dissipation chamber 801 is communicated with the accommodating chamber 104, and the air inlet hole 802 and the air outlet hole 802 are communicated with the heat dissipation chamber 801 to help the heat in the accommodating chamber 104 to be dissipated to the air. It can be understood that the heat generating member and the cooling member 701 can also adjust the temperature of the accommodating chamber 104 at the same time, so as to ensure that the temperature in the accommodating chamber 104 is relatively constant. It should be noted that the cover 8 is provided with a positioning hole 804 for fixing the positioning member 304.

It will be appreciated that a suspension element seat 9 is provided on the side of the cover element 8 remote from the receiving space 104, and that the suspension element seat 9 is provided at one end with a fixing catch 10 for fixing the feed element 5. Of course, another hanger 11 may be provided between the hanger base 9 and the cover 8 for stabilizing the connection between the hanger base 9 and the cover 8. A circuit board (not shown in the figure) and a junction box 12 are arranged on one side of the flow passage valve body 1 away from the refrigeration assembly 7, and the circuit board is arranged between the flow passage valve body 1 and the junction box 12 and is used for connecting circuits and controlling among all components.

It should be noted that the flow passage valve body 1 is an integrated structure, various mounting holes and wiring holes are reasonably arranged on the flow passage valve body, and wiring is hidden and attractive.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A screw injection valve is used for injecting liquid materials and is characterized by comprising a flow passage valve body, a screw assembly, a firing pin assembly and a piezoelectric assembly; the runner valve body is provided with a first runner, the movable end of the screw assembly is at least partially arranged in the first runner so as to drive the liquid material to flow, and the striker assembly is arranged in the runner valve body;

the striker assembly comprises a striker and an elastic piece, the striker is arranged in the flow passage valve body, the striker is movably blocked on the first liquid outlet of the first flow passage, and the elastic piece is sleeved on the periphery of the striker to provide elasticity for the reciprocating motion of the striker; the piezoelectric component is arranged at one end of the firing pin and used for driving the firing pin to reciprocate.

2. The screw jet valve of claim 1, wherein said striker assembly further comprises a striker mount mounted within said runner valve body;

the elastic member is arranged on the firing pin fixing member, and the firing pin penetrates through the elastic member and is arranged on the firing pin fixing member.

3. The screw jet valve of claim 2, wherein the firing pin retainer comprises a body having a cavity and a retainer portion disposed at one end of the body;

4. The screw jet valve of claim 3 wherein the body has a first side bore and a second exit port;

5. The screw injector of claim 4, wherein a second side hole and a second flow channel are formed on one side of the striker;

6. The screw injector of claim 5, wherein the striker assembly further comprises a positioning member; the flow passage valve body is provided with a fixing hole, the first notch, the second notch and the fixing hole are aligned, one end of the positioning piece extends to the fixing hole, and the other end of the positioning piece penetrates through the first notch to the second notch to be clamped with the second notch.

7. The screw injector of claim 1, wherein the screw assembly comprises a driver and a screw, the screw being at least partially disposed within the first flow passage, an output end of the driver being connected to an end of the screw remote from the first flow passage.

8. The screw injector of claim 7, wherein the screw assembly further comprises a screw stator disposed in the first flow passage and sleeved around the screw.

9. The screw injector of claim 1, wherein the piezoelectric assembly comprises a piezoelectric ceramic, an adjustment member, and a piezoelectric ceramic wafer; the adjusting piece is arranged at one end of the piezoelectric ceramic, the other end of the piezoelectric ceramic is arranged at one end of the firing pin, and the piezoelectric ceramic pressing piece is arranged between the adjusting piece and the piezoelectric ceramic.

10. The screw jet valve of claim 1 further comprising a feed member mounted to the runner valve body.