Combination valve, piping system and glue storage equipment

Abstract

The utility model discloses a combination valve, a pipeline system and a glue storage device, wherein the combination valve comprises a valve body and an opening and closing assembly; a plurality of main flow paths for connecting to the required control pipeline are arranged inside the valve body, and the main flow path comprises a first channel for connecting to the glue storage barrel; a plurality of opening and closing assemblies are arranged, and are arranged one-to-one corresponding to the first channels; the opening and closing assembly comprises a valve core and a first sealing member, the valve core is slidably arranged in the valve body, and a boss portion is arranged at one end, and the first sealing member is arranged on the peripheral side surface of the boss portion; when the valve core slides to the closed position, the boss portion is inserted into the corresponding first channel, and the first sealing member abuts against the inner wall of the first channel to cut off the main flow path; when the valve core slides to the open position, the boss portion is disengaged from the first channel to open the main flow path. The combination valve of the utility model can adapt to switch control under different pressure states and improve leakage problems.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline control, in particular to a combined valve, a pipeline system and glue storage equipment. Background Art

[0002] In the related art, the glue storage equipment includes a glue storage barrel and a pipeline system, and the pipeline system includes a combination valve and a bubble elimination pipeline, a protective gas delivery pipeline and other pipelines, wherein the glue storage barrel is used to store glue, and the bubble elimination pipeline is used to connect an external vacuum pumping device to realize vacuum defoaming of the glue in the glue storage barrel, and the protective gas delivery pipeline is used to connect an external protective gas supply device to input high-pressure protective gas into the glue storage barrel, and each pipeline is connected to the glue storage barrel through a combination valve, and the combination valve is provided with a corresponding control unit corresponding to each pipeline to realize the opening or closing of each pipeline; since the glue storage barrel needs to be vacuum defoamed and high-pressure protective gas needs to be introduced, the flow path connected to the glue storage barrel in the control unit will be in a negative pressure state sometimes and in a positive pressure state sometimes, and it is difficult to ensure that the combination valve can completely cut off the corresponding flow path to completely close the corresponding pipeline under different air pressure states, which is prone to leakage problems. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a combination valve, which can adapt to switch control under different pressure states and improve the leakage problem.

[0004] The utility model also provides a pipeline system and glue storage equipment having the combined valve.

[0005] According to the combination valve of the first aspect embodiment of the utility model, it includes a valve body and an opening and closing assembly; a plurality of main flow paths for connecting to the required control pipelines are arranged inside the valve body, and the main flow path includes a first channel for connecting to the glue storage barrel; a plurality of opening and closing assemblies are arranged, and they are arranged one by one corresponding to the first channels; the opening and closing assembly includes a valve core and a first sealing member, the valve core is slidably arranged in the valve body, and a boss portion is arranged at one end, and the first sealing member is arranged on the peripheral side surface of the boss portion; when the valve core slides to the closed position, the boss portion is inserted into the corresponding first channel, and the first sealing member abuts against the inner wall of the first channel to cut off the main flow path; when the valve core slides to the open position, the boss portion escapes from the first channel to open the main flow path.

[0006] The combined valve according to the first embodiment of the utility model has at least the following beneficial effects:

[0007] In the combination valve of this embodiment, when the glue storage tank connected to the combination valve is in a negative pressure state, the valve core maintained in the closed position can be stably maintained in the closed position under the action of atmospheric pressure because the pressure of the first channel is less than the atmospheric pressure, thereby completely cutting off the pipeline connected to the corresponding main flow path. When the glue storage tank connected to the combination valve is in a positive pressure state, even if the valve core is slightly lifted by the gas pressure in the first channel and a small part of the boss part is withdrawn from the first channel, the first sealing member can still be in contact with the inner wall of the first channel, so that the fluid cannot flow through the first channel, thereby completely cutting off the pipeline connected to the corresponding main flow path; therefore, the combination valve of this embodiment can effectively cut off the pipeline to be controlled whether in a positive pressure state or a negative pressure state, thereby preventing leakage problems in the corresponding pipeline.

[0008] According to the combination valve of some embodiments of the first aspect of the utility model, the main flow path also includes a connecting cavity and a second channel for connecting to external functional equipment, the second channel, the connecting cavity and the first channel are connected in sequence, the valve core has a first end inserted in the connecting cavity, the boss portion is arranged at the first end, the connecting port of the first channel connecting to the connecting cavity is opposite to the first end, and the boss portion can enter and exit the first channel through the connecting port by sliding the valve core.

[0009] According to the combination valve of some embodiments of the first aspect of the utility model, the opening and closing assembly also includes a second sealing member, which is arranged on the end surface of the first end and surrounds the boss portion. When the valve core slides to the closed position, the first sealing member abuts against the cavity wall of the connecting cavity.

[0010] According to the combination valve of some embodiments of the first aspect of the utility model, multiple groups of pipeline control structures are arranged inside the valve body, the pipeline control structure includes a control chamber, a control airway and a main flow, the control chamber is arranged on one side of the connecting chamber in the same pipeline control structure, the valve core has a second end opposite to the first end, and the second end is slidably arranged in the control chamber; the air outlet end of the control airway is connected to the control chamber in the same pipeline control structure, and is used to ventilate the control chamber to drive the valve core to slide and switch positions.

[0011] According to the combination valve of some embodiments of the first aspect of the utility model, the combination valve also includes a plurality of solenoid valves, which are installed on the valve body. The valve body is provided with an air intake channel, which connects the various solenoid valves. The air intake ends of the control air channels are connected to a solenoid valve one by one, and the solenoid valves can control the on-off between the control air channels and the air intake channels connected thereto.

[0012] According to the combination valve of some embodiments of the first aspect of the utility model, each pipeline control structure includes two control air channels, which are the first control air channel and the second control air channel respectively; the air outlet end of the first control air channel is connected to the side of the control chamber away from the connecting chamber, and the airflow entering the control chamber from the first control air channel can drive the valve core to slide to the closed position; the air outlet end of the second control air channel is connected to the side of the control chamber close to the connecting chamber, and the airflow entering the control chamber from the second control air channel can drive the valve core to slide to the open position.

[0013] According to the combination valve of some embodiments of the first aspect of the utility model, a first annular protrusion is provided on the cavity wall of the control cavity close to the connecting cavity, and a second annular protrusion is provided at the second end; a first variable air chamber is formed between the second end and the cavity wall of the control cavity away from the connecting cavity, and the air outlet end of the first control air channel is connected to the first variable air chamber; an annular second variable air chamber is formed between the first annular protrusion and the second annular protrusion, and the air outlet end of the second control air channel is connected to the second variable air chamber.

[0014] According to the combination valve of some embodiments of the first aspect of the utility model, a third seal is provided on the first annular protrusion, and the third seal abuts against the peripheral side surface of the valve core; and / or a fourth seal is provided on the second annular protrusion, and the fourth seal abuts against the peripheral side surface of the control chamber.

[0015] According to some embodiments of the second aspect of the utility model, the pipeline system includes the combination valve of the embodiment of the first aspect mentioned above.

[0016] The pipeline system according to some embodiments of the second aspect of the utility model has at least the following beneficial effects:

[0017] By adopting the combination valve of the first embodiment, the pipeline to be controlled can be effectively cut off in both positive pressure state and negative pressure state, thereby preventing leakage.

[0018] According to some embodiments of the third aspect of the utility model, the glue storage equipment includes the pipeline system of the embodiment of the second aspect mentioned above.

[0019] The glue storage device according to some embodiments of the second aspect of the utility model has at least the following beneficial effects:

[0020] By adopting the pipeline system of the second embodiment, the pipeline to be controlled can be effectively cut off in a positive pressure state or a negative pressure state, thereby preventing leakage.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1 This is a schematic structural diagram of a combination valve according to an embodiment of the utility model;

[0024] Figure 2 for Figure 1 A side view of the combination valve shown;

[0025] Figure 3 for Figure 1 A side view of the combination valve shown in another perspective;

[0026] Figure 4 for Figure 1 The schematic diagram of the structure of the combination valve after the valve cover is removed;

[0027] Figure 5 for Figure 2 The cross-sectional view of the combination valve shown in the AA direction;

[0028] Figure 6 for Figure 4 A cross-sectional view of the valve body shown in;

[0029] Figure 7 for Figure 3 The cross-sectional view of the combination valve shown in the BB direction;

[0030] Figure 8 for Figure 4 A schematic diagram of the structure of the fourth valve block shown in ;

[0031] Fig. 9 for Figure 4 The structural schematic diagram of the third valve block is shown in .

[0032] Reference numerals:

[0033] The valve body 100 comprises: a first air intake passage 110; a second air intake passage 111; a second air intake passage 112; a main passage 210; a second passage 211; a connecting chamber 212; a first passage 213; a control chamber 220; a first annular protrusion 221; a third sealing member 222; a first variable air chamber 223; a second variable air chamber 224; a control air passage 250; a first control air passage 251; a second control air passage 252; a valve core 260; a first end 261; a boss portion 262; a second end 263; a second annular protrusion 264; a positioning hole 265; a fourth sealing member 266; a second sealing member 270; a first sealing member 280; an elastic member 290; a solenoid valve 300; a first valve block 500; a first plate portion 510; a second plate portion 520; a second valve block 600; a third valve block 700; a fourth valve block 800; a valve cover 900. DETAILED DESCRIPTION

[0034] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0035] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, left, right, front, back, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] In the description of the utility model, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0037] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0038] It should be noted that in the related technology, the glue storage equipment includes a glue storage barrel and a pipeline system, and the pipeline system includes a combination valve and a bubble elimination pipeline, a protective gas delivery pipeline and other pipelines. The glue storage barrel is used to store glue, and the bubble elimination pipeline is used to connect to an external vacuum pumping device to realize vacuum defoaming of the glue in the glue storage barrel, and the protective gas delivery pipeline is used to connect to an external protective gas supply device to input high-pressure protective gas into the glue storage barrel, and each pipeline is connected to the glue storage barrel through a combination valve, and the combination valve is provided with a corresponding control unit corresponding to each pipeline to realize the opening or closing of each pipeline.

[0039] Among them, the combination valve includes a valve body, and the control unit includes a main flow path and a valve core. The main flow path is arranged in the valve body, and the control unit can be connected to the corresponding pipeline through the main flow path, and the valve core is used to control the on and off of the main flow path; the main flow path includes a second channel, a connecting cavity and a first channel which are connected in sequence, and the second channel extends to the outer side surface of the valve body away from the connecting cavity at one end, so as to connect to external functional equipment (such as a vacuum device or a protective gas supply device, etc.) through the pipeline in the pipeline system, and the first channel also extends to the outer side surface of the valve body away from the connecting cavity at one end, so as to connect to the glue storage barrel through the pipeline in the pipeline system; the valve core can be slidably arranged in the valve body, and one end of the valve core is inserted in the connecting cavity. By sliding the valve core, the valve core can be fitted to the cavity wall of the connecting cavity close to the first channel, thereby blocking the connecting port between the first channel and the connecting cavity to cut off the main flow path, or the valve core can be away from the connecting cavity close to the cavity wall of the first channel to open the connecting port between the first channel and the connecting cavity, thereby opening the main flow path.

[0040] However, since the glue storage barrel needs to be vacuum defoamed and high-pressure protective gas needs to be introduced, the main flow path in the control unit that is connected to the glue storage barrel will sometimes be in a negative pressure state (internal fluid pressure is less than atmospheric pressure) and sometimes in a positive pressure state (internal fluid pressure is greater than atmospheric pressure). As a result, it is difficult to ensure that the control unit can completely cut off the main flow path to close the corresponding pipeline under different air pressure conditions, which can easily cause leakage problems.

[0041] For example, when high-pressure protective gas is introduced into the glue storage barrel, the protective gas delivery pipeline connected to the protective gas supply device in the pipeline system will be in an open state, while the remaining pipelines will be in a closed state. Therefore, for the valve core in the combination valve, one of the valve cores needs to be maintained in an open position (that is, the valve core is maintained in a position away from the connecting cavity and close to the cavity wall of the first channel), and the remaining valve cores need to be maintained in a closed position (that is, the valve core is maintained in a position in which it is close to the cavity wall of the connecting cavity and close to the first channel); for the valve core that needs to be maintained in a closed position, since the air pressure in the first channel is greater than the atmospheric pressure, and since there is a certain air pressure fluctuation in the introduced protective gas, the valve core may be slightly lifted and pushed open under the action of the gas pressure in the first channel, which will make it difficult for the end of the valve core to smoothly abut against the cavity wall of the connecting cavity, thereby causing leakage in the main flow path.

[0042] Based on this, refer to Figures 1 to 5According to some embodiments of the utility model, the combination valve includes a valve body 100 and an opening and closing assembly; a plurality of groups of pipeline control structures are arranged inside the valve body 100, and the pipeline control structure includes a main flow path 210, both ends of which extend to the surface of the valve body 100, and are used to connect the pipeline control structure to the pipeline to be controlled; the main flow path 210 includes a first channel 213, one end of which extends to the outer side of the valve body 100, so as to facilitate connecting to the glue storage barrel through the pipeline in the pipeline system; and a plurality of opening and closing assemblies are also arranged, and the opening and closing assemblies are arranged one by one corresponding to the first channels 213 in the pipeline control structure, and each opening and closing assembly constitutes a group of pipeline control units with its corresponding pipeline control structure to realize the on-off control of the pipeline connected to the pipeline control structure.

[0043] Reference Figure 5 Specifically, the opening and closing assembly includes a valve core 260 and a first sealing member 280; wherein the valve core 260 is slidably disposed in the valve body 100 and can slide between a closed position and an open position; the valve core 260 has a first end 261 facing the first channel 213, and a boss portion 262 is disposed in the middle of the end surface of the first end 261, and the first sealing member 280 is disposed on the peripheral side surface of the boss portion 262; wherein, when the valve core 260 slides to the closed position, the boss portion 262 is inserted into the first channel 213, and the first sealing member 280 abuts against the inner wall of the first channel 213, thereby cutting off the main flow path 210, and then closing the corresponding pipeline in the pipeline system; and when the valve core 260 slides to the open position, the boss portion 262 and the first sealing member 280 both escape from the first channel 213, thereby opening the main flow path 210, and then opening the corresponding pipeline in the pipeline system.

[0044] It should be understood that when the combination valve of this embodiment is in use, it can be connected to each pipeline of the pipeline system through the main flow 210 in each pipeline control structure; and when the glue storage barrel connected to the pipeline system is in a vacuum defoaming state, the degassing pipeline connected to the vacuum generating device in the pipeline system will be in an open state, and the remaining pipelines will be in a closed state. Therefore, for the valve core 260 in the combination valve, one of the valve cores 260 needs to be maintained in the open position, while the remaining valve cores 260 need to be maintained in the closed position; for the valve core 260 maintained in the closed position, since the pressure of the first channel 213 is lower than the atmospheric pressure, the valve core 260 can be stably maintained in the closed position under the action of atmospheric pressure, so that the pipeline connected to the corresponding main flow 210 can be completely cut off.

[0045] When the protective gas is introduced into the glue storage barrel connected to the pipeline system, the protective gas delivery pipeline connected to the protective gas supply device in the pipeline system will be in an open state, and the remaining pipelines will be in a closed state. Therefore, for the valve core 260 in the combination valve, one valve core 260 needs to be kept in the open position, and the remaining valve cores 260 need to be kept in the closed position; for the valve core 260 that needs to be kept in the closed position, since the gas pressure inside the first channel 213 is greater than the atmospheric pressure, and due to the pressure fluctuation of the protective gas introduced, the valve core 260 may be slightly lifted and pushed open. With the help of the first sealing member 280, even if the valve core 260 is slightly lifted up by the gas pressure in the first channel 213 and a small part of the boss portion 262 is out of the first channel 213, the first sealing member 280 can still maintain contact with the inner wall of the first channel 213, so that the fluid cannot flow through the first channel 213, and the pipeline connected to the corresponding main flow channel 210 can still be completely cut off; therefore, the combination valve of this embodiment can effectively cut off the pipeline to be controlled whether in a positive pressure state or a negative pressure state, thereby preventing leakage of the corresponding pipeline.

[0046] It is understood that in some of these embodiments, reference Figures 1 to 5, the main flow path 210 also includes a connecting cavity 212 and a second channel 211 for connecting to an external functional device, wherein the second channel 211, the connecting cavity 212 and the first channel 213 are connected in sequence, and the second channel 211 extends to the outer side of the valve body 100 at one end away from the connecting cavity 212, so as to be connected to the external functional device through the pipeline in the pipeline system, and the first channel 213 has a connecting port connected to the connecting cavity 212, and the first end 261 of the valve core 260 is inserted into the connecting cavity 212 and is opposite to the connecting port of the first channel 213 connected to the connecting cavity 212, so that the boss portion 262 can enter and exit the first channel 213 through the above-mentioned connecting port by sliding the valve core 260; through the above-mentioned structure, when the valve core 260 slides to the closed position, the boss portion 262 is inserted into the second channel 211, and the first The sealing member 280 abuts against the inner wall of the second channel 211, and the first end 261 abuts against the cavity wall of the communicating cavity 212 close to the second channel 211, thereby blocking the communicating port of the second channel 211 connecting to the communicating cavity 212, so as to cut off the communication between the communicating cavity 212 and the second channel 211 and the first channel 213, thereby cutting off the main flow path 210 so that the fluid cannot pass through the main flow path 210; and when the valve core 260 slides to the open position, the boss portion 262 escapes from the second channel 211, and the end surface of the first end 261 also escapes from the cavity wall of the communicating cavity 212 close to the second channel 211, thereby opening the communicating port of the second channel 211 connecting to the communicating cavity 212, so that the first channel 213 can connect to the communicating cavity 212 and the second channel 211, thereby opening the main flow path 210 so that the fluid can pass through the main flow path 210 smoothly.

[0047] It is understood that in some of these embodiments, reference Figure 5 The opening and closing assembly further includes a second sealing member 270, which is arranged on the end surface of the first end 261 and surrounds the boss portion 262. When the valve core 260 slides to the closed position, the first sealing member 280 abuts against the cavity wall of the connecting cavity 212, which forms a connecting port connecting the first channel 213. It should be understood that since the valve core 260 needs to slide frequently to cut off or open the main flow path 210, the first sealing member 280 will also frequently contact and rub against the inner wall of the first channel 213. Therefore, after the combination valve has been working for a long time, it is easy for the first sealing member 280 to wear and cause the main flow path 210 to be not closed tightly. By arranging the second sealing member 270 on the end surface of the first end 261 and abutting the second sealing member 270 against the cavity wall of the connecting cavity 212 to assist in sealing, the leakage risk after the first sealing member 280 is worn can be further reduced.

[0048] It is understandable that in order to drive each valve core 260 to slide in the valve body 100, thereby realizing the switching of the on-off state of each main flow path 210, in some embodiments, referring to Figure 5 and Figure 6 The pipeline control structure also includes a control chamber 220 and a control air channel 250. The control chamber 220 is arranged on one side of the connecting chamber 212 in the same pipeline control structure. The valve core 260 has a second end 263 opposite to the first end 261, and the second end 263 is slidably arranged in the control chamber 220; the air outlet end of the control air channel 250 is connected to the control chamber 220 in the same pipeline control structure, so that air can be ventilated into the control chamber 220 through the control air channel 250, so that the valve core 260 is driven by the airflow to slide in the valve body 100 and switch the position, so that the main flow 210 is switched from the open state to the cut-off state, or from the cut-off state to the open state.

[0049] Furthermore, in order to further realize the automatic control of the on-off switching of each main flow path 210, in some embodiments, reference is made to Figures 4 to 6 The combination valve also includes a plurality of solenoid valves 300, which are installed on the valve body 100. The valve body 100 is provided with an air intake channel 110, which is used to connect to an external air supply device. The air intake channel 110 is connected to each solenoid valve 300, and the air intake end of the control air channel 250 is connected to a solenoid valve 300 one by one. The solenoid valve 300 can control the connection and disconnection between the control air channel 250 and the air intake channel 110 to which it is connected; thus, by controlling the solenoid valve 300 to make the corresponding control air channel 250 connected to the air intake channel 110, the corresponding main flow path 210 can be automatically switched.

[0050] It is understandable that in order to better adapt to different pressure conditions, in some embodiments, reference is made to Figure 6 Each pipeline control structure includes two control air channels 250. For the convenience of description below, the two control air channels 250 are respectively referred to as the first control air channel 251 and the second control air channel 252, wherein the air outlet end of the first control air channel 251 is connected to the side of the control chamber 220 away from the connecting chamber 212, and the air flow from the first control air channel 251 into the control chamber 220 can drive the valve core 260 to slide in the direction close to the first channel 213, that is, it can drive the valve core 260 to slide to the closed position; the air outlet end of the second control air channel 252 is connected to the side of the control chamber 220 close to the connecting chamber 212, and the air flow from the second control air channel 252 into the control chamber 220 can drive the valve core 260 to slide in the direction away from the first channel 213, that is, it can drive the valve core 260 to slide to the open position.

[0051] Furthermore, when the glue storage barrel is in a state of vacuum defoaming, for the valve core 260 that needs to be maintained in the closed position, since the pressure of the gas in the first channel 213 is lower than the atmospheric pressure, it can be firmly maintained in the closed position under the action of the atmospheric pressure; and for the valve core 260 that needs to be maintained in the open position, since the air pressure in the first channel 213 is lower than the atmospheric pressure, the atmospheric pressure can generate a driving force to push the valve core 260 toward the closed position, and by setting the second control air channel 252, the compressed gas introduced into the control chamber 220 through the second control air channel 252 can give the valve core 260 a driving force to maintain it in the open position, thereby effectively overcoming the influence of the atmospheric pressure.

[0052] When the protective gas is introduced into the glue storage barrel, for the valve core 260 that needs to be maintained in the open position, since the gas pressure in the first channel 213 is greater than the atmospheric pressure, the valve core 260 can be firmly maintained in the open position under the action of the gas pressure in the first channel 213; and for the valve core 260 that needs to be maintained in the closed position, since the gas pressure in the first channel 213 is greater than the atmospheric pressure, the gas pressure in the first channel 213 will be able to generate a driving force for the valve core 260 to push the valve core 260 to the open position, and by setting the first control air channel 251, the compressed gas introduced into the control chamber 220 through the first control air channel 251 can give the valve core 260 a driving force to maintain the closed position, thereby further overcoming the influence of the air pressure in the first channel 213.

[0053] It can be understood that in order to enable the airflow from the first control air passage 251 into the control chamber 220 to give the valve core 260 a driving force to slide to the closed position, and to enable the airflow from the second control air passage 252 into the control chamber 220 to give the valve core 260 a driving force to slide to the open position, in some embodiments, reference is made to Figure 5 and Fig. 9A first annular protrusion 221 is provided on the cavity wall of the control cavity 220 close to the connecting cavity 212, and a second annular protrusion 264 is provided on the second end 263 of the valve core 260; wherein, a first variable air chamber 223 is formed between the second end 263 and the cavity wall of the control cavity 220 away from the connecting cavity 212, and the air outlet end of the first control air channel 251 is connected to the first variable air chamber 223, so that when air is ventilated into the first variable air chamber 223 through the first control air channel 251, the air flow can give the second end 263 a thrust in the direction toward the first end 261, thereby pushing the valve core 260 to move in the direction close to the first channel 213 to block the connecting port between the first channel 213 and the connecting cavity 212; the first annular protrusion 221 and the second annular protrusion 264, an annular second variable air chamber 224 is formed between the valve core 260 and the valve spool 260, and the outlet end of the second control air channel 252 is connected to the second variable air chamber 224, so that when air is ventilated into the second variable air chamber 224 through the second control air channel 252, the air flow can give the second annular protrusion 264 a thrust in a direction away from the first end 261, thereby pushing the valve core 260 to move away from the first channel 213 to open the connecting port between the first channel 213 and the connecting cavity 212; at the same time, through the first annular protrusion 221 and the second annular protrusion 264, the valve core 260 can be supported and guided at two different positions in the movement direction of the valve core 260, so that the sliding of the valve core 260 is smoother and the deflection of the valve core 260 during the sliding process is avoided.

[0054] It should be understood that in order to maintain good air tightness of the second variable air chamber 224, in one embodiment, referring to Figure 5 A third sealing member 222 is provided on the first annular protrusion 221 , and the third sealing member 222 abuts against the peripheral side surface of the valve core 260 to prevent the gas entering the second variable air chamber 224 from leaking through the gap between the first annular protrusion 221 and the valve core 260 .

[0055] It should be understood that in order to maintain good air tightness of the first variable air chamber 223, in one embodiment, referring to Figure 5 Similarly, a fourth sealing member 266 is provided on the second annular protrusion 264 , and the fourth sealing member 266 abuts against the cavity wall of the control cavity 220 to prevent the gas entering the first variable air chamber 223 from leaking through the gap between the second annular protrusion 264 and the inner wall of the control cavity 220 .

[0056] According to the combination valve of some embodiments of the first aspect of the utility model, the combination valve also includes a plurality of elastic members 290, which are arranged in the valve body 100 and are connected one-to-one with the valve core 260, and are used to provide an elastic force to keep the valve core 260 in a closed position, so that in the event of a sudden power outage, the valve core 260 can move to the closed position under the elastic force of the elastic member 290, so as to reduce the risk of external impurities or air entering the glue storage barrel through the main flow path 210, and reduce the risk of protective gas in the glue storage barrel leaking through each main flow path 210.

[0057] It should be understood that in one embodiment, reference Figure 5 The elastic member 290 is a compression spring, and in order to prevent the compression spring from moving in the valve body 100, a positioning hole 265 is provided at the second end 263 of the valve core 260, one end of the compression spring is inserted into the positioning hole 265, and the other end of the compression spring abuts against the cavity wall of the control cavity 220 away from the connecting cavity 212.

[0058] It is understood that in some embodiments, the valve body 100 is assembled from a plurality of valve blocks to reduce the difficulty of processing the main flow path 210, the control airway 250 and the intake channel 110 in the valve body 100, and to improve the convenience of installing the valve core 260 in the valve body 100; for example, in one embodiment, referring to Figure 5Specifically, the valve body 100 includes a first valve block 500, a second valve block 600, a third valve block 700 and a fourth valve block 800, wherein the second valve block 600, the third valve block 700 and the fourth valve block 800 are roughly in the shape of a rectangular parallelepiped, and the third valve block 700 and the second valve block 600 are sequentially stacked and installed above the fourth valve block 800; the first valve block 500 includes a first plate body 510 and a second plate body 520, the first valve block 500 is stacked and installed in the middle of the upper part of the second valve block 600 through the first plate body 510, the second plate body 520 is perpendicular to the first plate body 510, and the lower end of the second plate body 520 is connected to the middle of the first plate body 510, so that the first valve The block 500 is roughly T-shaped; wherein, the air intake channel 110 is arranged on the first valve block 500 and the second valve block 600, and the air intake end of the main air intake channel 111 extends to the front side of the second valve block 600, and the end of the main air intake channel 111 is located inside the second plate body 520, each air intake branch channel 112 is arranged on the second plate body 520, and one end of each air intake branch channel 112 is connected to the main air intake channel 111, and the other end extends to the left side or right side of the second plate body 520, the solenoid valve 300 is correspondingly installed on the left side or right side of the second plate body 520, and the air intake port of the solenoid valve 300 is connected to each air intake branch channel 112. The control chamber 220 is provided on the third valve block 700, the communication chamber 212 is provided on the side of the fourth valve block 800 facing the third valve block 700, and the position of the communication chamber 212 corresponds to the position of the control chamber 220 one by one, and the valve core 260 is partially located in the control chamber 220 of the third valve block 700, and partially located in the communication chamber 212 of the fourth valve block 800; the second control air passage 252 is partially provided on the first valve block 500, and partially provided on the second valve block 600 and the third valve block 700; the first control air passage 251 is partially provided on the It is arranged on the first valve block 500, and partially arranged on the second valve block 600; specifically, the air inlet end of the first control air channel 251 and the air inlet end of the second control air channel 252 are arranged on the left side surface or the right side surface of the second plate body 520, and are connected with the corresponding air outlet of the solenoid valve 300; and the air outlet end of the first control air channel 251 is arranged on the lower side surface of the second valve block 600, and is connected to the upper side of the control chamber 220; and the air outlet end of the second control air channel 252 is arranged on the third valve block 700, and is connected to the lower side of the control chamber 220.The first channels 213 in the main flow path 210 are all arranged on the fourth valve block 800 and extend in the up-down direction. The upper end of the first channel 213 is connected to the connecting chamber 212, and the lower end of the first channel 213 extends to the lower end surface of the fourth valve block 800, so as to connect to the glue storage barrel through a pipeline; the second channels 211 in the main flow path 210 are all arranged on the fourth valve block 800 and extend in the horizontal direction. One end of the second channel 211 is connected to the connecting chamber 212, and the other end of the second channel 211 extends to the peripheral side surface of the fourth valve block 800, so as to connect to external functional equipment (such as a vacuum generating device or a protective gas supply device, etc.) through a pipeline, etc.

[0059] It is understood that in one embodiment, referring to Figures 1 to 5 The combination valve further includes a valve cover 900 , which is disposed above the second valve block 600 , wherein the first valve block 500 and the solenoid valve 300 are both located inside the valve cover 900 , so that the solenoid valve 300 is protected by the valve cover 900 .

[0060] The following describes a pipeline system of an embodiment of the second aspect of the utility model, and the pipeline system of this embodiment includes the combination valve of the embodiment of the first aspect. It should be understood that by adopting the combination valve of the embodiment of the first aspect, the pipeline to be controlled can be effectively cut off in a positive pressure state or a negative pressure state, thereby preventing leakage.

[0061] It can be understood that in some embodiments, the pipeline system includes a bubble elimination pipeline, a protective gas delivery pipeline, a circulation reflux pipeline and a safety pipeline. Correspondingly, the pipeline control unit in the combination valve includes four groups, and the four groups of pipeline control units are respectively connected to the bubble elimination pipeline, the protective gas delivery pipeline, the circulation reflux pipeline and the safety pipeline through the main flow 210.

[0062] Specifically, the bubble elimination pipeline includes a first pipeline and a second pipeline; wherein, one end of the first pipeline is connected to the first channel 213 of one of the main streams 210, and the other end is used to connect to the glue storage barrel; one end of the second pipeline is connected to the second channel 211 of the corresponding main stream 210, and the other end is used to connect to the vacuum generating device.

[0063] Similarly, the protective gas delivery pipeline includes a third pipeline and a fourth pipeline; wherein, one end of the third pipeline is connected to the first channel 213 of one of the main channels 210, and the other end is used to connect to the glue storage barrel; one end of the fourth pipeline is connected to the second channel 211 of the corresponding main channel 210, and the other end is used to connect to the protective gas supply device.

[0064] The circulating reflux pipeline includes a fifth pipeline, a sixth pipeline, a circulating pump and a seventh pipeline; wherein, one end of the fifth pipeline is connected to the first channel 213 of one of the main channels 210, and the other end is used to connect to the bottom of the glue storage barrel; one end of the sixth pipeline is connected to the second channel 211 of the corresponding main channel 210, and the other end is connected to the glue inlet of the circulating pump; one end of the seventh pipeline is connected to the glue outlet of the circulating pump, and the other end is used to connect to the top of the glue storage barrel.

[0065] The safety pipeline includes an eighth pipeline and a safety valve, wherein one end of the eighth pipeline is connected to the first channel 213 of one of the main channels 210, and the other end is used to connect to the glue storage barrel; the safety valve is connected to the end of the second channel 211 of one of the main channels 210 away from the connecting chamber 212, or the safety valve is connected to the end of the second channel 211 away from the connecting chamber 212 through a pipeline.

[0066] The following describes the glue storage device of the third embodiment of the present embodiment, and the glue storage device of this embodiment includes the pipeline system of the second embodiment. It should be understood that by adopting the pipeline system of the second embodiment, the pipeline to be controlled can be effectively cut off in a positive pressure state or a negative pressure state, thereby preventing leakage.

[0067] It is understandable that in some embodiments, the glue storage device further includes a glue storage barrel, which can be connected to the vacuum generating device, the protective gas supply device, the safety valve and the circulation pump through a pipeline system. It should be understood that the specific connection method between the glue storage barrel and the management system can refer to the embodiments related to the pipeline system, which will not be described in detail here.

[0068] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A combination valve, characterized in that: include: The valve body is provided with a plurality of main channels for connecting to the required control pipelines, and the main channels include a first channel for connecting to the glue storage barrel; There are multiple opening and closing components, and they are arranged one by one corresponding to the first channels; the opening and closing components include a valve core and a first sealing member, the valve core is slidably arranged in the valve body, and a boss portion is provided at one end, and the first sealing member is arranged on the peripheral side surface of the boss portion; when the valve core slides to a closed position, the boss portion is inserted into the corresponding first channel, and the first sealing member abuts against the inner wall of the first channel to cut off the main flow path; when the valve core slides to an open position, the boss portion escapes from the first channel to open the main flow path.

2. A combination valve according to claim 1, characterized in that: The main flow path also includes a connecting cavity and a second channel for connecting to an external functional device. The second channel, the connecting cavity and the first channel are connected in sequence. The valve core has a first end inserted in the connecting cavity, and the boss portion is arranged at the first end. The connecting port of the first channel connecting to the connecting cavity is opposite to the first end, and the boss portion can enter and exit the first channel through the connecting port by sliding the valve core.

3. A combination valve according to claim 2, characterized in that: The opening and closing assembly also includes a second sealing member, which is arranged on the end surface of the first end and surrounds the boss portion. When the valve core slides to the closed position, the first sealing member abuts against the cavity wall of the connecting cavity.

4. A combination valve according to claim 2, characterized in that: A plurality of pipeline control structures are arranged inside the valve body, and the pipeline control structures include a control chamber, a control airway and the main flow path. The control chamber is arranged on one side of the connecting chamber in the same pipeline control structure. The valve core has a second end opposite to the first end, and the second end is slidably arranged in the control chamber. The air outlet end of the control airway is connected to the control chamber in the same pipeline control structure, and is used for ventilating the control chamber to drive the valve core to slide and switch positions.

5. A combination valve according to claim 4, characterized in that: The combination valve also includes multiple solenoid valves, which are installed on the valve body. The valve body is provided with an air intake channel, which is connected to each of the solenoid valves. The air intake end of the control air channel is connected to one of the solenoid valves one by one, and the solenoid valve can control the connection between the control air channel and the air intake channel.

6. A combination valve according to claim 4, characterized in that: Each of the pipeline control structures includes two control air channels, namely the first control air channel and the second control air channel; the outlet end of the first control air channel is connected to the side of the control chamber away from the connecting chamber, and the airflow entering the control chamber from the first control air channel can drive the valve core to slide to the closed position; the outlet end of the second control air channel is connected to the side of the control chamber close to the connecting chamber, and the airflow entering the control chamber from the second control air channel can drive the valve core to slide to the open position.

7. A combination valve according to claim 6, characterized in that: A first annular protrusion is provided on the cavity wall of the control cavity close to the connecting cavity, and a second annular protrusion is provided on the second end; a first variable air chamber is formed between the second end and the cavity wall of the control cavity away from the connecting cavity, and the air outlet end of the first control air channel is connected to the first variable air chamber; an annular second variable air chamber is formed between the first annular protrusion and the second annular protrusion, and the air outlet end of the second control air channel is connected to the second variable air chamber.

8. A combination valve according to claim 7, characterized in that: A third sealing member is disposed on the first annular protrusion, and the third sealing member abuts against the peripheral side surface of the valve core; and / or a fourth sealing member is disposed on the second annular protrusion, and the fourth sealing member abuts against the peripheral side surface of the control chamber.

9. A piping system, characterized in that: The invention comprises a combination valve as claimed in any one of claims 1 to 8.

10. Glue storage equipment, characterized in that: The invention comprises a piping system as claimed in claim 9.

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