CN210479097U - Pneumatic rotary valve piston metering pump - Google Patents
Pneumatic rotary valve piston metering pump Download PDFInfo
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- CN210479097U CN210479097U CN201921122788.8U CN201921122788U CN210479097U CN 210479097 U CN210479097 U CN 210479097U CN 201921122788 U CN201921122788 U CN 201921122788U CN 210479097 U CN210479097 U CN 210479097U
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Abstract
The utility model discloses a pneumatic rotary valve piston metering pump, which relates to the filling technical field and comprises a rotary valve driving mechanism and a filling mechanism, wherein the filling mechanism comprises a rotary valve unit, a material filling unit and a material filling driving unit; the rotary valve unit comprises a valve body, a valve cavity, a valve core, a feeding channel and a discharging channel; the valve core is rotatably arranged in the valve cavity, the feeding channel and the discharging channel are both arranged on the valve body, and the feeding channel and the discharging channel are both communicated with the valve cavity; the material injection unit is communicated with the valve cavity and is used for sucking materials from the feeding channel or discharging the materials from the discharging channel; the rotary valve driving mechanism is used for driving the valve core to rotate, and the injection driving unit is used for driving the injection unit to suck. The utility model discloses not only make the precision of filling improve greatly, and make the filling efficiency of material improve greatly, satisfy the filling demand of material.
Description
Technical Field
The utility model relates to a filling technical field particularly, relates to a pneumatic rotary valve piston measuring pump.
Background
The Heibar (HIBAR) metering pump is a high-precision quantitative liquid injection pump, and can quantitatively inject or meter and convey various liquids with different chemical and physical properties; because of its unique and compact design, it can realize various liquid injection functions and excellent performance, at present, the Heiba metering pump is applied to the production of various high-performance batteries, the manufacture of capacitors, and the filling processes of food sauce, cosmetics, medicines, inks, etc.
The existing sea tyrant metering pump can not only be accurately controlled in the process of pumping materials, so that the accuracy of material filling is low, and the filling efficiency of the materials is low in the process of filling the materials. Therefore, a pneumatic rotary valve piston metering pump with high filling precision and high filling efficiency is urgently needed.
Disclosure of Invention
An object of the utility model is to provide a pneumatic rotary valve piston measuring pump not only makes the precision of filling improve greatly, and makes the filling efficiency of material improve greatly.
For realizing the purpose of the utility model, the technical proposal adopted is that: a pneumatic rotary valve piston metering pump comprises a rotary valve driving mechanism and a filling mechanism, wherein the filling mechanism comprises a rotary valve unit, a material filling unit and a material filling driving unit;
the rotary valve unit comprises a valve body, a valve cavity, a valve core, a feeding channel and a discharging channel; the valve core is rotatably arranged in the valve cavity, the feeding channel and the discharging channel are both arranged on the valve body, and the feeding channel and the discharging channel are both communicated with the valve cavity;
the material injection unit is communicated with the valve cavity and is used for sucking materials from the feeding channel or discharging the materials from the discharging channel;
the rotary valve driving mechanism is used for driving the valve core to rotate, and the injection driving unit is used for driving the injection unit to suck.
Furthermore, the material injection unit comprises a pump body and a material containing cavity arranged in the pump body; one end of the material containing cavity is open, the open end of the material containing cavity is fixedly connected with the valve cavity, and a slidable piston head is further installed in the material containing cavity.
Furthermore, a sealing ring groove is formed in the outer wall of the piston head, and a Y-shaped sealing ring is fixedly mounted in the sealing ring groove.
Furthermore, the material injection driving unit comprises a first cylinder body fixed at the tail of the pump body, a first piston rod capable of sliding is installed in the first cylinder body, the front end of the first piston rod penetrates through the first cylinder body and extends into the material containing cavity, and the front end of the first piston rod is in floating connection with the piston head; and the tail part of the first cylinder body is also provided with a limiting structure for limiting the movement of the first piston rod.
Furthermore, a radially extending connecting pin is fixedly mounted on the end face of the front end of the first piston rod, and a pin slot matched with the connecting pin is formed in the rear end face of the piston head; the connecting pin is ┸ -shaped in cross section.
Further, a sliding first cylinder piston is further installed in the first cylinder body, and the first cylinder piston is fixed with the first piston rod; the first cylinder body is further provided with a first air inlet channel and a second air inlet channel, and the first air inlet channel and the second air inlet channel are respectively located at two ends of the first cylinder body.
Furthermore, the limiting structure comprises a sleeve and a micrometer adjusting rod; the sleeve is fixedly arranged at the tail part of the first cylinder body, and the tail part of the first piston rod penetrates through the first cylinder body and is inserted into the sleeve; the micrometer adjusting rod is adjustably inserted into the tail of the sleeve, a sleeve is fixedly sleeved on the micrometer adjusting rod, and the other end of the sleeve is movably sleeved on the sleeve.
Furthermore, the inner end surface of the micrometer adjusting rod is also provided with a mounting groove, the inner wall of the mounting groove is also provided with a plurality of through holes, the through holes are uniformly distributed at intervals along the circumferential direction of the micrometer adjusting rod, and the plurality of through holes are internally provided with sliding locking pins; the length of the sliding pin is greater than the depth of the through hole, and the inner end of the locking pin is conical; the bottom of the mounting groove is also provided with a locking push pin for pushing the locking pin, and the push-out end of the locking push pin is conical; and the micrometer adjusting rod is also provided with a screw for pushing the locking pushing pin.
Furthermore, the rotary valve driving mechanism is fixedly arranged on one side of the rotary valve unit and comprises a second cylinder body and a second piston cavity arranged in the second cylinder body; a slidable second piston rod is arranged in the second piston cavity, the front end of the second piston rod penetrates through the second piston cavity to extend forwards, and a rack is fixedly arranged at the extending end of the second piston rod; and a rotating transmission shaft is further arranged on the second cylinder body, a gear meshed with the rack is fixedly arranged on the transmission shaft, and one end of the transmission shaft penetrates through the second cylinder body and is connected with the valve core.
Furthermore, a sliding second cylinder piston is also arranged in the second cylinder body, and the second cylinder piston is fixed with a second piston rod; and a third air inlet channel and a fourth air inlet channel are also formed in the second cylinder body, and the third air inlet channel and the fourth air inlet channel are respectively communicated with two ends of the second piston cavity.
Further, a fixing groove is formed in the second cylinder body and is located above the rack; a rotating installation shaft is installed in the fixed groove, and the middle section of the installation shaft is eccentric; the middle section of installation axle is installed the pivoted bearing, and the excircle face and the rack of bearing compress tightly.
Further, a driving block is fixedly arranged on the transmission shaft; a valve core driving cover is fixedly arranged on the valve core, and the driving block is connected with the valve core driving cover key; the center of the driving block is also provided with a groove, a bolt is inserted in the groove, the outer end of the bolt is tightly abutted against the valve core driving cover, and the bottom of the groove is provided with a compression spring for pushing the bolt.
The utility model has the advantages that,
when the material needs to be filled, the valve core is driven to rotate by the rotary valve driving mechanism, the feeding channel is communicated with the material filling unit, then the material filling unit is driven to fill the material through the material filling driving unit, the material is pumped into the material filling unit through the feeding channel, the valve core is continuously driven to rotate by the rotary valve driving mechanism, the material filling unit is communicated with the discharging channel, the material filling driving unit drives the material filling unit, and the material in the material filling unit is discharged through the discharging channel, so that the material filling is completed.
The utility model discloses not only make the precision of filling improve greatly, and make the filling efficiency of material improve greatly, satisfy the filling demand of material.
Drawings
Fig. 1 is a structural diagram of a pneumatic rotary valve piston metering pump provided by the present invention;
FIG. 2 is a cross-sectional view of the injection unit, injection drive unit of FIG. 1;
FIG. 3 is a cross-sectional view of the transfer valve unit of FIG. 1;
FIG. 4 is a cross-sectional view A-A of FIG. 3;
FIG. 5 is a cross-sectional view of the transfer valve drive mechanism of FIG. 1;
fig. 6 is a sectional view of B-B in fig. 5.
Reference numbers and corresponding part names in the drawings:
1. the device comprises a rotary valve driving mechanism 2, a rotary valve unit 3, a material injection unit 4 and a material injection driving unit;
100. a second cylinder body 101, a second piston cavity 102, a second piston rod 103, a rack 104, a transmission shaft 105, a gear 106, a second cylinder piston 107, a third air inlet channel 108, a fourth air inlet channel 109, a fixing groove 110, a mounting shaft 111, a bearing 112, a driving block 113, a valve core driving cover 114, a groove 115, a bolt 116, a compression spring 117, a front piston cavity 118, a rear piston cavity 119, a groove body 120, a rectangular bar 121 and a rectangular groove;
200. the valve comprises a valve body, 201, a valve cavity, 202, a valve core, 203, a feeding channel, 204, a discharging channel, 205, a ceramic valve sleeve, 206, a first opening, 207, a second opening, 208, a third opening, 209, a flow channel, 210 and a material sucking channel;
300. the device comprises a pump body, a material containing cavity, a piston head, a piston 303, a sealing ring groove, a Y-shaped sealing ring, a pin groove, a ceramic cylinder barrel and a piston cover, wherein the pump body is 301;
400. the locking mechanism comprises a first cylinder body 401, a first piston rod 402, a connecting pin 403, a first cylinder piston 404, a first air inlet channel 405, a second air inlet channel 406, a sleeve 407, a dial adjusting rod 408, a mounting groove 409, a through hole 410, a locking pin 411, a locking push pin 412, a screw rod 413, a front cavity 414, a rear cavity 415 and a sleeve.
Detailed Description
The present invention will be described in further detail below with reference to specific embodiments and with reference to the accompanying drawings.
Fig. 1 shows a pneumatic rotary valve piston metering pump provided by the present invention, which comprises a rotary valve driving mechanism 1 and a filling mechanism, wherein the filling mechanism comprises a rotary valve unit 2, a material injection unit 3 and a material injection driving unit 4;
the rotary valve unit 2 comprises a valve body 200, a valve cavity 201, a valve core 202, a feeding channel 203 and a discharging channel 204; the valve core 202 is rotatably installed in the valve cavity 201, the feeding channel 203 and the discharging channel 204 are both arranged on the valve body 200, and the feeding channel 203 and the discharging channel 204 are both communicated with the valve cavity 201;
the material injection unit 3 is communicated with the valve cavity 201, and the material injection unit 3 is used for sucking materials from the feeding channel 203 or discharging the materials from the discharging channel 204;
the rotary valve driving mechanism 1 is used for driving the valve core 202 to rotate, and the injection driving unit 4 is used for driving the suction of the injection unit 3.
The material injection unit 3 is fixedly arranged at the rear end of the rotary valve unit 2, the material injection driving unit 4 is fixedly arranged at the rear end of the material injection unit 3, and the rotary valve driving mechanism 1 is fixedly arranged at one side of the rotary valve unit 2; the rotary valve unit 2 is used for controlling the movement path of the material, the material injection unit 3 is used for sucking or discharging the material, and the path of the material pumping is controlled by the rotary valve unit 2 in the process of sucking and discharging the material; and the material injection driving unit 4 is used for driving the material injection unit 3 to enable the material injection unit 3 to realize material suction or material discharge.
As shown in fig. 3 and 4, a hollow cylindrical ceramic valve sleeve 205 is further installed in the valve cavity 201, one end of the valve sleeve is sealed, a first opening 206, a second opening 207 and a third opening 208 corresponding to the feeding channel 203, the discharging channel 204 and the injecting unit 3 are formed in the valve sleeve, an included angle between the first opening 206 and the second opening 207 and an included angle between the first opening 206 and the third opening 208 are both 90 °, that is, the second opening 207 and the third opening 208 are respectively located on two sides of the first opening 206; the valve core 202 is a cylindrical ceramic valve core 202, the valve core 202 is rotatably mounted in the ceramic valve sleeve 205, the valve core 202 is provided with a circulation channel 209, when the valve core 202 rotates for a fixed angle, two ends of the circulation channel 209 are respectively butted with the first opening 206 and the third opening 208, when the valve core 202 rotates for another fixed angle, two ends of the circulation channel 209 are respectively butted with the second opening 207 and the third opening 208, so that not only can materials enter the material injection unit 3 from the feeding channel 203, but also the materials in the material injection unit 3 can be discharged from the discharging channel 204; the valve body 200 is further provided with a material suction channel 210 used for being communicated with the material injection unit 3, the material suction channel 210 corresponds to the third opening 208 on the valve body 200, the material suction channel 210 is communicated with the interior of the valve sleeve, when the valve core 202 rotates for a fixed angle, materials can enter the circulation channel 209 through the feeding channel 203, the materials entering the circulation channel 209 can enter the material injection unit 3 through the material suction channel 210, when the valve core 202 rotates for another fixed angle, the materials in the material injection unit 3 can enter the circulation channel 209 through the material suction channel 210, and the materials entering the circulation channel 209 can be discharged through the discharging channel 204.
The rotary valve driving mechanism 1 is connected with the valve core 202, specifically, one end of the valve core 202 connected with the rotary valve driving mechanism 1 is one end of the valve core 202 close to the opening of the valve sleeve, so that the connection between the valve core 202 and the rotary valve driving mechanism 1 is more convenient, the rotary valve driving mechanism 1 drives the valve core 202 to rotate in the valve sleeve, the direction of a flow channel 209 in the valve core 202 is changed, materials can conveniently enter the material injection unit 3 or the materials in the material injection unit 3 are discharged from the discharge channel 204, and the filling of the materials is more convenient. Annotate material drive unit 4 and be used for annotating material unit 3 and drive, through annotating the removal of material unit 3, make annotate material unit 3 and realize inhaling the material and arrange the material, be about to fixed capacity's material inhale earlier to annotate in material unit 3, then discharge fixed capacity's material to the realization is to material quantitative filling, makes the capacity precision of the material of filling higher.
As shown in fig. 2, the injection unit 3 includes a pump body 300 and a material containing cavity 301 opened in the pump body 300; one end of the material containing cavity 301 is open, the open end of the material containing cavity 301 is fixedly connected with the valve cavity 201, and a slidable piston head 302 is further installed in the material containing cavity 301. The material containing cavity 301 is cylindrical, the tail part of the material containing cavity 301 is sealed, one end of the material containing cavity 301 communicated with the material sucking channel 210 is open, the diameter of the feeding end of the material containing cavity 301 is equal to that of the material sucking channel 210, so that the materials can conveniently enter the material containing cavity 301, and the materials in the material containing cavity 301 can be conveniently discharged; a ceramic cylinder 306 is fixedly arranged in the material containing cavity 301, the ceramic cylinder 306 is in a cylindrical shape with two ends penetrating through, and the outer diameter of the ceramic cylinder 306 is in interference fit with the inner wall of the material containing cavity 301, so that the ceramic cylinder 306 is fixedly arranged; the piston head 302 slides in the ceramic cylinder 306, and the outer circular surface of the piston head 302 is in sealing fit with the inner wall of the ceramic cylinder 306, so that the situation that materials enter the rear end of the material containing cavity 301 from a gap between the outer circular surface of the piston head 302 and the inner wall of the ceramic cylinder 306 after entering the material containing cavity 301 can be avoided, and the situation that the front end of the material containing cavity 301 can guarantee a negative pressure state when the piston head 302 moves backwards can be guaranteed, and the capacity of the materials entering the material containing cavity 301 is more accurate.
When the valve core 202 rotates to the two ends of the flow channel 209 and is respectively communicated with the feeding channel 203 and the material sucking channel 210, the piston head 302 moves backwards along the ceramic cylinder 306, the front end of the material containing cavity 301 is in a negative pressure state, and the material entering the feeding channel 203 smoothly enters the ceramic cylinder of the material containing cavity 301 through the flow channel 209, so that the material sucking process of the material is realized; when the valve core 202 rotates to the two ends of the flow channel 209 and is respectively communicated with the material suction channel 210 and the material discharge channel 204, when the valve core 202 rotates to the two ends of the flow channel 209 and is respectively communicated with the material feeding channel 203 and the material suction channel 210, the piston head 302 moves forwards along the ceramic cylinder 306, at the moment, the piston head 302 pushes materials in the ceramic cylinder 306 forwards, the materials in the material containing cavity 301 smoothly enter the material discharge channel 204 through the flow channel 209 and are finally discharged through the material discharge channel 204, and filling of the materials is achieved. In the process of sucking and discharging materials, the distance of the piston moving along the ceramic cylinder 306 is fixed, so that the volume of the materials entering the material containing cavity 301 is fixed, and finally the volume of the materials discharged from the material containing cavity 301 is fixed, so that quantitative filling of the materials is realized, and the filling precision of the materials is higher.
The outer wall of the piston head 302 is provided with a sealing ring groove 303, and a Y-shaped sealing ring 304 is fixedly arranged in the sealing ring groove 303. The cross section of seal ring groove 303 is the rectangle, and seal ring groove 303 is one at least, a plurality of seal ring grooves 303 are arranged along piston head 302's length direction evenly at intervals, when seal ring groove 303 is a plurality of, all install Y type sealing washer 304 in every seal ring groove 303, or can install O type sealing washer in some seal ring grooves 303, install Y type sealing washer 304 in some seal ring grooves 303, make and form sliding seal cooperation between seal head and the ceramic cylinder 306, make piston head 302 when backward moving, guarantee that the front end of flourishing material chamber 301 is the negative pressure state, make the material enter into the capacity of flourishing material chamber 301 more accurate. In order to make the piston head 302 move more smoothly along the ceramic cylinder 306, a ring groove can be formed in the piston head 302, the sliding bearing 111 is arranged in the ring groove, and the outer circular surface of the sliding bearing 111 is in sliding fit with the ceramic cylinder 306, so that the friction force between the piston head 302 and the ceramic cylinder 306 can be reduced, the abrasion of the outer wall of the piston head 302 to the inner wall of the ceramic cylinder 306 can be effectively reduced, and the service life of the ceramic cylinder 306 is longer while the material filling precision is ensured.
The material injection driving unit 4 comprises a first cylinder 400 fixed at the tail of the pump body 300, a first piston rod 401 is slidably mounted in the first cylinder 400, the front end of the first piston rod 401 penetrates through the first cylinder 400 and extends into the material containing cavity 301, and the front end of the first piston rod 401 is connected with the piston head 302 in a floating manner; the tail of the first cylinder 400 is further provided with a limiting structure for limiting the movement of the first piston rod 401.
The first cylinder 400 is welded or screwed to the tail of the pump body 300, the length direction of the first piston rod 401 is consistent with the length direction of the pump body 300, and the first piston rod 401 can slide back and forth in the pump body 300; the front end of the first piston rod 401 penetrates through the first cylinder 400 and then continuously penetrates through the pump body 300, so that the front end of the first piston rod 401 extends into the material containing cavity 301; the central axis of the first piston rod 401 and the central axis of the piston head 302 are on the same straight line, the front end of the first piston rod 401 is connected with the rear end of the piston head 302, and through the back-and-forth movement of the first piston rod 401, when the first piston rod 401 moves back and forth, the first piston rod 401 drives the piston head 302 to synchronously move back and forth, so that the material is sucked into the material containing cavity 301 or pushed out of the material containing cavity 301. By enabling the first piston rod 401 to be in floating connection with the piston head 302, the thrust exerted by the first piston rod 401 on the piston head 302 is uniformly distributed along the radius direction of the piston head 302, so that the thrust exerted on the piston head 302 is more stable, the piston head 302 is ensured to advance smoothly, and the abrasion of the piston head 302 on the ceramic cylinder 306 can be effectively reduced.
The limiting structure is fixedly arranged at the tail part of the first cylinder body 400 and is used for limiting the movement of the first piston rod 401, so that the movement of the piston head 302 is limited, the capacity of the material sucked into the material containing cavity 301 or the capacity of the material discharged from the material containing cavity 301 is fixed, and the nail pipe filling of the material is realized; limiting structure self can be adjusted, through adjusting limiting structure, makes according to the demand of filling, makes the position that first piston rod 401 removed adjust, makes the amount of movement of piston head 302 obtain adjusting to the material that makes to enter into flourishing material chamber 301 can be adjusted, and the convenience can be according to the filling requirement, can carry out the filling under the different capacity requirement circumstances.
A radially extending bolt 115 is fixedly mounted on the end face of the front end of the first piston rod 401, and a pin slot 305 matched with the connecting pin 402 is formed in the rear end face of the piston head 302; the connecting pin 402 is shaped ┸ in cross-section. The connecting pin 402 is integrally provided with the first piston rod 401, and the central axis of the connecting pin 402 is the same as the diameter direction of the first piston rod 401; the pin groove 305 is formed in the rear end surface of the piston head 302, the shape of the pin groove 305 matches the shape of the connecting pin 402, and the pin groove 305 is a through groove, that is, both ends of the pin groove 305 penetrate through the outer circular surface of the piston head 302. When the first piston rod 401 and the piston head 302 are installed, the connection between the first piston rod 401 and the piston head 302 can be realized only by inserting the connecting pin 402 into the insertion groove, and because a gap exists between the plug pin 115 and the insertion groove, when the first piston rod 401 is slightly inclined in the moving process, the gap between the connecting pin 402 and the insertion groove can overcome the inclination of the first piston rod 401, so that the piston head 302 still keeps stably advancing when the first piston rod 401 pushes the piston head 302, and the abrasion of the ceramic cylinder 306 caused by the inclination of the piston head 302 in the moving process is prevented.
A sliding first cylinder piston 403 is further installed in the first cylinder 400, and the first cylinder piston 403 is fixed with the first piston rod 401; the first cylinder 400 is further provided with a first air intake channel 404 and a second air intake channel 405, and the first air intake channel 404 and the second air intake channel 405 are respectively located at two ends of the first cylinder 400. The inside cylindric cavity that is of first cylinder body 400, and first cylinder piston 403 slidable mounting is in first cylinder body 400, and the outer wall of first cylinder piston 403 and the inner wall sliding seal cooperation of first cylinder body 400, makes first cylinder piston 403 become preceding cavity 413 and back cavity 414 with the inside of first cylinder body 400, and first intake duct communicates with preceding cavity 413, and the second intake duct communicates with back cavity 414. The first cylinder piston 403 is fixed on the first piston rod 401 through one of a threaded connection, a key connection or a welding fixation, so that when the first cylinder piston 403 moves, the first cylinder piston 403 can drive the first piston rod 401 to move, thereby driving the first piston rod 401.
When the first cylinder piston 403 needs to be driven to move backwards, air is introduced into the front chamber 413 through the first air inlet channel, the compressed air entering the front chamber 413 pushes the first cylinder piston 403, so that the first cylinder piston 403 moves backwards, and when the first cylinder piston 403 moves backwards, the original compressed air in the rear chamber 414 is discharged through the second air inlet channel; when the first cylinder piston 403 needs to be driven to move forward, air is introduced into the rear chamber 414 through the second air inlet, and the compressed air entering the rear chamber 414 pushes the first cylinder piston 403 to move the first cylinder piston 403 forward, while when the first cylinder piston 403 moves forward, the original compressed air in the front chamber 413 is discharged through the first air inlet.
The limiting structure comprises a sleeve 406 and a micrometer adjusting rod 407; the sleeve 406 is fixedly arranged at the tail part of the first cylinder body 400, and the tail part of the first piston rod 401 penetrates through the first cylinder body and is inserted into the sleeve 406; the micrometer adjusting rod 407 is adjustably inserted into the tail of the sleeve 406, a sleeve 415 is fixedly sleeved on the micrometer adjusting rod 407, and the other end of the sleeve 415 is movably sleeved on the sleeve 406.
The sleeve 406 is a hollow cylinder with two ends penetrating through, scale marks arranged along the axial direction of the sleeve 415 are arranged on the outer wall of the sleeve 406, the inner diameter of the sleeve 406 is matched with the diameter of the first piston rod 401, the central axis of the sleeve 406 and the central axis of the first piston rod 401 are on the same straight line, and the sleeve 406 is fixedly installed at the tail part of the first cylinder body 400 in a welding fixing or threaded connection mode, so that when the first piston rod 401 moves backwards, the rear end of the first piston rod 401 can be directly inserted into the sleeve 406; the micrometer adjusting rod 407 is inserted into the sleeve 406 in a threaded fit mode, the micrometer adjusting rod 407 is rotated to enable the micrometer adjusting rod 407 to advance or retreat, along with the advancing or retreating of the micrometer adjusting rod 407, the length of the micrometer adjusting rod 407 in the sleeve 406 changes, the effective length of the first piston rod 401 entering the sleeve 406 changes, finally the moving distance of the piston head 302 changes, and the material volume entering the material containing cavity 301 changes.
Be provided with the scale mark of arranging along sleeve 415 circumference on the sleeve 415, when thousandth adjusting rod 407 is rotating, sleeve 415 rotates along with thousandth adjusting rod 407 is synchronous, pass through the cooperation of sleeve 415 and sleeve 406 this moment, can obtain the volume that thousandth adjusting rod 407 gos forward fast according to the scale mark on the sleeve 406, and thousandth adjusting rod 407 is in the pivoted while, according to the cooperation of the scale mark on sleeve 415 and the scale mark on the sleeve 406, the precision that can make thousandth adjusting rod 407 volume of advancing is higher, thereby the volume precision that finally gets into material in flourishing material chamber 301 is higher.
When the sleeve 415 is not arranged, the scale marks on the sleeve 406 can be engraved on the outer wall of the micrometer adjusting rod 407, and the scale marks on the original sleeve 415 can be engraved on the outer wall of the sleeve 406, so that the feeding amount of the micrometer adjusting rod 407 can still be accurately obtained through the matching of the two scale marks, namely the capacity of the material in the material containing cavity 301 can still be accurately obtained; when the requirement on the filling precision is not high, the sleeve 415 on the micrometer adjusting rod 407 can be eliminated, and the scale marks on the sleeve 406 can be directly engraved on the micrometer adjusting rod 407.
The inner end surface of the micrometer adjusting rod 407 is further provided with a mounting groove 408, the inner wall of the mounting groove 408 is further provided with a plurality of through holes 409, the through holes 409 are uniformly distributed at intervals along the circumferential direction of the micrometer adjusting rod 407, and the plurality of through holes 409 are internally provided with sliding locking pins 410; the length of the sliding pin is greater than the depth of the through hole 409, and the inner end of the locking pin 410 is conical; a locking push pin 411 for pushing the locking pin 410 is further installed at the bottom of the installation groove 408, and the push end of the locking push pin 411 is conical; the micrometer adjusting rod 407 is also provided with a screw 412 for pushing the locking push pin 411.
The mounting groove 408 is arranged along the length direction of the micrometer adjusting rod 407, and the through hole 409 is positioned at the opening of the mounting groove 408; at least two through holes 409 are formed, the locking pin 410 can slide in the through holes 409 fully, the outer end of the locking pin 410 penetrates through the micrometer adjusting rod 407 and extends outwards, the inner end of the locking pin 410 extends into the installation groove 408, the outer end of the locking pin 410 is the end, extending outwards from the micrometer adjusting rod 407, of the locking pin 410, and the inner end of the locking pin 410 is the end, extending inwards from the installation groove 408, of the locking pin 410; the taper of the inner end of the locking pin 410 is 60 degrees, the locking push pin 411 is installed at the bottom of the installation groove 408, the locking push pin 411 can move fully in the installation groove 408, the push-out end of the locking pin 410 is the end, close to the opening of the installation groove 408, of the locking pin 410, the taper of the push-out end of the locking pin 410 is 60 degrees, the locking push pin 411 pushes the locking pin 410 to move forwards, the outer end of the locking pin 410 is abutted against the inner wall of the sleeve 406, the dial adjusting rod 407 and the sleeve 406 can be locked and fixed when the dial adjusting rod 407 does not need to rotate, the moving distances of the first piston rod 401 at each time are equal, and the material filling quantity at each time is consistent.
The axial direction of the screw 412 is consistent with the axial direction of the micrometer adjusting rod 407, the central line axis of the screw 412 is in the same straight line with the central axis of the micrometer adjusting rod 407, and the screw 412 extends into the mounting groove 408 through the micrometer adjusting rod 407, so that the tail of the screw 412 is tightly abutted to the locking push pin 411. When the micrometer adjusting rod 407 needs to be locked with the sleeve 406, the screw 412 is rotated to move the screw 412 into the mounting groove 408, and the movement of the screw 412 pushes the locking push pin 411 to advance, so that the locking push pin 411 pushes the locking pin 410, and the locking pin 410 is tightly abutted against the sleeve 406, so that the micrometer adjusting rod 407 and the sleeve 406 are locked and fixed; when the moving amount of the first piston rod 401 needs to be adjusted, the feeding amount of the dial adjusting rod 407 needs to be adjusted, at this time, the screw 412 is rotated reversely, so that the screw 412 moves outwards, the screw 412 loses the abutting on the locking push pin 411, the locking pin 410 loses the thrust of the locking push pin 411, the locking pin 410 loses the locking of the sleeve 406, at this time, the dial adjusting rod 407 and the sleeve 406 lose the locking, the dial adjusting rod 407 can rotate, the feeding amount of the dial adjusting rod 407 is adjusted, and therefore the moving amount of the first piston rod 401 is adjusted.
The rotary valve driving mechanism 1 is fixedly arranged on one side of the rotary valve unit 2, and the rotary valve driving mechanism 1 comprises a second cylinder body 100 and a second piston cavity 101 arranged in the second cylinder body 100; a slidable second piston rod 102 is installed in the second piston cavity 101, the front end of the second piston rod 102 penetrates through the second piston cavity 101 to extend forwards, and a rack 103 is fixedly installed at the extending end of the second piston rod 102; the second cylinder 100 is further provided with a rotating transmission shaft 104, the transmission shaft 104 is fixedly provided with a gear 105 engaged with the rack 103, and one end of the transmission shaft 104 penetrates through the second cylinder 100 and is connected with the valve core 202.
As shown in fig. 5 and 6, the rotary valve driving mechanism 1 is fixedly installed on one side of the rotary valve unit 2 by screws; the length direction of the second cylinder 100 is consistent with the length direction of the first cylinder 400, the length direction of the second piston cavity 101 is consistent with the length direction of the first cylinder 400, the length direction of the second piston rod 102 is consistent with the length direction of the second piston cavity 101, and the second piston rod 102 can move back and forth in the second piston cavity 101; the front end of the second piston rod 102 penetrates through the second piston cavity 101 to extend forwards, the rack 103 and the front end of the second piston rod 102 are integrally arranged, and the length direction of the rack 103 is consistent with that of the second piston rod 102; specifically, the front end of the second cylinder 100 is further provided with a groove 119, the front end of the second piston rod 102 extends into the groove 119, and the second rack 103 is located in the groove 119; the transmission shaft 104 is rotatably installed in the second cylinder 100 through a bearing 111, and the axial direction of the transmission shaft 104 is perpendicular to the axial direction of the rack 103; the gear 105 is fixedly mounted on the transmission shaft 104 through a key connection, the gear 105 is meshed with the rack 103, when the second piston rod 102 moves back and forth, the gear 105 moves synchronously with the rack 103 fixed on the second piston rod 102, when the rack 103 moves, the rack 103 drives the gear 105 to rotate, the transmission shaft 104 fixed with the gear 105 rotates, and the transmission shaft 104 is fixed with the valve core 202, so that the transmission shaft 104 drives the valve core 202 to rotate.
A sliding second cylinder piston 106 is further installed in the second cylinder 100, and the second cylinder piston 106 is fixed with the second piston rod 102; a third air inlet channel 107 and a fourth air inlet channel 108 are further formed in the second cylinder 100, and the third air inlet channel 107 and the fourth air inlet channel 108 are respectively communicated with two ends of the second piston cavity 101.
When the second cylinder piston 106 needs to be driven to move backwards, air is introduced into the front piston cavity 117 through the third air inlet channel, the compressed air entering the front piston cavity 117 pushes the second cylinder piston 106, so that the second cylinder piston 106 moves backwards, and when the second cylinder piston 106 moves backwards, the original compressed air in the rear piston cavity 118 is discharged through the fourth air inlet channel; when the second cylinder piston 106 needs to be driven to move forward, air is fed into the rear piston cavity 118 through the fourth air inlet channel, and the compressed air entering the rear piston cavity 118 pushes the second cylinder piston 106, so that the second cylinder piston 106 moves forward, and when the second cylinder piston 106 moves forward, the original compressed air in the front piston cavity 117 is exhausted through the third air inlet channel.
A fixing groove 109 is further formed in the second cylinder 100, and the fixing groove 109 is located above the rack 103; a rotating mounting shaft 110 is mounted in the fixing groove 109, and the middle section of the mounting shaft 110 is eccentric; the middle section of the mounting shaft 110 is provided with a rotating bearing 111, and the outer circular surface of the bearing 111 is pressed against the rack 103.
The fixing groove 109 is located above the groove body 119, and the axial direction of the fixing groove 109 is perpendicular to the axial direction of the groove body 119, that is, the axial direction of the fixing groove 109 is consistent with the axial direction of the transmission shaft 104; the fixing groove 109 is cylindrical, the fixing groove 109 is communicated with the top of the groove body 119, and one end of the fixing groove 109 penetrates through the outer surface of the second cylinder 100; the mounting shaft 110 can rotate in the fixing groove 109, at least one end of the mounting shaft 110 is matched with the inner diameter of the fixing groove 109 in diameter, and the middle diameter of the mounting shaft 110 is the smallest; the central axes of the two ends of the mounting shaft 110 are on the same straight line, and the middle section of the mounting shaft 110 is eccentrically arranged relative to the two ends of the mounting shaft 110; the bearing 111 is rotatably mounted in the middle section of the mounting shaft 110, so that the bearing 111 can rotate sufficiently on the mounting shaft 110, and when the rack 103 moves back and forth, the bearing 111 can rotate on the mounting shaft 110, thereby effectively reducing the friction between the bearing 111 and the rack 103, and facilitating the forward or backward movement of the rack 103. When the installation shaft 110 is rotated, the bearing 111 installed on the installation shaft 110 eccentrically rotates, so that the bearing 111 compresses the rack 103, the meshing gap between the rack 103 and the gear 105 is smaller, and the rack 103 can drive the gear 105 to rotate conveniently.
A driving block 112 is also fixedly arranged on the transmission shaft 104; the valve core 202 is also fixedly provided with a valve core driving cover 113, and the driving block 112 is connected with the valve core driving cover 113 in a key way; the center of the driving block 112 is further provided with a groove 114, a plug pin 115 is inserted into the groove 114, the outer end of the plug pin 115 is tightly abutted against the valve core driving cover 113, and a compression spring 116 for pushing the plug pin 115 is installed at the bottom of the groove 114.
The driving block 112 is located at one end of the transmission shaft 104 close to the valve core 202, and the driving block 112 and the transmission shaft 104 are integrally arranged; the valve core driving cover 113 is fixedly connected with the valve core 202; an integrated rectangular strip 120 is further arranged on the outer surface of the driving block 112, and the rectangular strip 120 is arranged along the axial direction of the driving block 112; the outer surface of the valve core driving cover 113 is provided with a rectangular groove 121 matched with the rectangular strip 120, the rectangular strip 120 is clamped in the rectangular groove 121, so that key connection is realized between the valve core driving cover 113 and the driving block 112, when the driving block 112 is driven to rotate by the transmission shaft 104, the driving block 112 drives the valve core driving cover 113 to rotate, and the valve core driving cover 113 is fixed with the valve core 202, so that the valve core driving cover 113 drives the valve core 202 to rotate while rotating.
The groove 114 is positioned in the center of the driving block 112, and the cross section of the groove 114 is in a convex shape; the plug pin 115 is in a step shaft shape, the large-diameter end of the plug pin 115 is positioned at the bottom of the groove 114, and the small-diameter end of the plug pin 115 extends outwards into the groove 114, so that the installation of the plug pin 115 is facilitated, and the plug pin 115 is effectively prevented from falling out of the groove 114; the compression spring 116 is arranged at the bottom of the groove 114, and the upper end of the compression spring 116 is tightly propped against the lower end of the bolt 115.
In the actual use process, because the second cylinder 100 is fixed with the valve body 200 of the rotary valve through a screw, the driving block 112 abuts against the driving block 112 of the valve core 202, at the moment, the driving block 112 is in key connection with the valve core driving cover 113, and because a gap is formed between the rectangular strip 120 and the rectangular groove 121, when the driving block 112 drives the valve core driving cover 113 to rotate, the valve core driving cover 113 swings movably, at the moment, the valve core driving cover 113 abuts against the upper end of the plug pin 115, and the compression spring 116 abuts against the small end of the plug pin 115, so that the valve core driving cover 113 abuts against the driving block 112, the shaking of the valve core driving cover 113 in the rotating process is effectively reduced, the rotation of the valve core driving cover 113 is more stable, and finally the rotation of the valve core 202 is more stable.
When materials need to be filled, air is firstly introduced into the rear piston cavity 118 through the fourth air inlet channel, compressed air entering the rear piston cavity 118 pushes the second cylinder piston 106 to enable the second cylinder piston 106 to move forwards, the second cylinder piston 106 drives the second piston rod 102 to move forwards when moving forwards, so that the rack 103 fixed with the second piston rod 102 moves forwards, when the rack 103 moves forwards, the rack 103 drives the gear 105 to rotate, when the gear 105 rotates, the transmission shaft 104 fixed with the gear 105 is driven to rotate synchronously, when the transmission shaft 104 rotates, the driving block 112 fixed on the transmission shaft 104 rotates, and due to the fact that the driving block 112 is in key connection with the valve core driving cover 113, the valve core driving cover 113 is driven to rotate when the driving block 112 rotates, and finally the valve core 202 fixed with the valve core driving cover 113 rotates; when the second cylinder piston 106 moves to the foremost end of the front piston cavity 117, the second piston cavity 101 cannot drive the second piston rod 102 to move forward, and at this time, two ends of the flow channel 209 on the valve core 202 are respectively butted with the feeding channel 203 and the material suction channel 210, so that the feeding channel 203 is communicated with the material containing cavity 301.
Then, air is introduced into the front chamber 413 through the first air inlet channel, compressed air entering the front chamber 413 pushes the first cylinder piston 403, so that the first cylinder piston 403 moves backwards, when the first cylinder piston 403 moves backwards, the first cylinder piston 403 moves backwards synchronously and backwards with a first piston rod 401 fixed to the first cylinder piston 403, when the first piston rod 401 moves backwards, the first piston rod 401 drives the piston head 302 to move backwards synchronously, at the moment, the front end of the material containing chamber 301 is in a negative pressure state, at the moment, materials sequentially pass through the flow channel 209 and the material suction channel 210 through the feeding channel 203 and enter the material containing chamber 301; when the first piston rod 401 retreats to a certain position, the rear end of the second piston rod 102 is abutted to the micrometer adjusting rod 407, the micrometer adjusting rod 407 limits the second piston rod 102, while the micrometer adjusting rod 407 limits the second piston rod 102, the first cylinder piston 403 moves to the rearmost end of the rear cavity 414, the first cylinder piston 403 cannot move backwards continuously, and at this time, the material sucking process of the material is completed.
Then, air is introduced into the front piston cavity 117 through the third air inlet channel, and the compressed air entering the front piston cavity 117 pushes the second cylinder piston 106, so that the second cylinder piston 106 moves backwards, and when the second cylinder piston 106 moves backwards, the original compressed air in the rear piston cavity 118 is discharged through the fourth air inlet channel; when the second cylinder piston 106 retreats, the second cylinder piston 106 drives the second piston rod 102 to retreat, so that the rack 103 fixed with the second piston rod 102 retreats, when the rack 103 retreats, the rack 103 drives the gear 105 to rotate in the reverse direction, when the gear 105 rotates in the reverse direction, the transmission shaft 104 fixed with the gear 105 rotates in the reverse direction, when the transmission shaft 104 rotates in the reverse direction, the driving block 112 fixed on the transmission shaft 104 rotates in the reverse direction, and because the driving block 112 is connected with the valve core driving cover 113 in a key manner, the driving block 112 drives the valve core driving cover 113 to rotate in the reverse direction when rotating, and finally the valve core 202 fixed with the valve core driving cover 113 rotates in the reverse direction; when the second cylinder piston 106 moves to the rearmost end of the front piston cavity 117, the second piston cavity 101 cannot drive the second piston rod 102 to continuously retreat, and at this time, two ends of the circulation channel 209 on the valve core 202 are respectively butted with the discharge channel 204 and the material suction channel 210, so that the discharge channel 204 is communicated with the material containing cavity 301.
Finally, the compressed air entering the rear chamber 414 pushes the first cylinder piston 403 by the air entering the rear chamber 414 through the second air inlet channel, so that the first cylinder piston 403 moves forward, and when the first cylinder piston 403 moves forward, the original compressed air in the front chamber 413 is discharged through the first air inlet channel; when the first cylinder piston 403 moves forwards, the first piston rod 401 fixed with the first cylinder piston 403 moves forwards synchronously, when the first piston rod 401 moves forwards, the first piston rod 401 drives the piston head 302 to move forwards synchronously, the piston head 302 pushes the material in the material containing cavity 301 forwards, and at the moment, the material passes through the material suction channel 210, the flow channel 209 and the discharge channel 204 in sequence, so that the material in the material containing cavity 301 is discharged from the discharge channel 204 finally. When the first cylinder piston 403 moves to the foremost end of the front chamber 413, the first cylinder piston 403 cannot move forward any more, and the filling process of the material is completed.
When the capacity of the filled material is adjusted, the screw 412 is rotated reversely, so that the screw 412 moves outwards, the screw 412 loses the abutting force on the locking push pin 411, the locking pin 410 loses the thrust of the locking push pin 411, the locking pin 410 loses the locking of the sleeve 406, and the micrometer adjusting rod 407 and the sleeve 406 lose the locking; then, the dial adjusting rod 407 is rotated to adjust the feeding amount of the dial adjusting rod 407, so that the length of the dial adjusting rod 407 in the sleeve 406 is changed, the effective length of the first piston rod 401 entering the sleeve 406 is changed, and finally the moving distance of the piston head 302 is changed, so that the space at the front end of the material containing cavity 301 is changed, and the material capacity entering the material containing cavity 301 is changed; finally, the screw 412 is rotated in the forward direction, so that the screw 412 moves inwards, the screw 412 pushes the locking push pin 411 to advance, the locking push pin 411 pushes the locking pin 410, the outer end of the locking pin 410 is locked with the sleeve 406, and the micrometer adjusting rod 407 and the sleeve 406 are unlocked.
Under long-term filling, when the meshing of the rack 103 and the gear 105 is loosened, the mounting shaft 110 is rotated, the bearing 111 mounted on the mounting shaft 110 eccentrically rotates, the bearing 111 compresses the rack 103, the meshing gap between the rack 103 and the gear 105 is smaller, and the rack 103 drives the gear 105 to rotate conveniently.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The pneumatic rotary valve piston metering pump is characterized by comprising a rotary valve driving mechanism and a filling mechanism, wherein the filling mechanism comprises a rotary valve unit, a material injection unit and a material injection driving unit;
the rotary valve unit comprises a valve body, a valve cavity, a valve core, a feeding channel and a discharging channel; the valve core is rotatably arranged in the valve cavity, the feeding channel and the discharging channel are both arranged on the valve body, and the feeding channel and the discharging channel are both communicated with the valve cavity;
the material injection unit is communicated with the valve cavity and is used for sucking materials from the feeding channel or discharging the materials from the discharging channel;
the rotary valve driving mechanism is used for driving the valve core to rotate, and the injection driving unit is used for driving the injection unit to suck.
2. The pneumatic rotary valve piston metering pump of claim 1, wherein the injection unit comprises a pump body and a material containing cavity formed in the pump body; the one end in flourishing material chamber is the opening form, and the open end and the valve pocket fixed connection in flourishing material chamber, still install the slidable piston head in the flourishing material chamber, sealed annular has been seted up on the outer wall of piston head, and sealed annular internal fixation has Y type sealing washer.
3. The pneumatic rotary valve piston metering pump according to claim 2, wherein the injection driving unit comprises a first cylinder fixed at the tail of the pump body, a first piston rod is slidably mounted in the first cylinder, the front end of the first piston rod extends into the material containing cavity through the first cylinder, and the front end of the first piston rod is in floating connection with the piston head; and the tail part of the first cylinder body is also provided with a limiting structure for limiting the movement of the first piston rod.
4. The pneumatic rotary valve piston metering pump according to claim 3, wherein a radially extending connecting pin is fixedly mounted on the end face of the front end of the first piston rod, and a pin groove matched with the connecting pin is formed in the rear end face of the piston head; a sliding first cylinder piston is further mounted in the first cylinder body with the cross section of ┸ type of the connecting pin, and the first cylinder piston is fixed with the first piston rod; the first cylinder body is further provided with a first air inlet channel and a second air inlet channel, and the first air inlet channel and the second air inlet channel are respectively located at two ends of the first cylinder body.
5. The pneumatic rotary valve piston metering pump according to claim 3 or 4, wherein the limiting structure comprises a sleeve and a micrometer adjusting rod; the sleeve is fixedly arranged at the tail part of the first cylinder body, and the tail part of the first piston rod penetrates through the first cylinder body and is inserted into the sleeve; the micrometer adjusting rod is adjustably inserted into the tail of the sleeve, a sleeve is fixedly sleeved on the micrometer adjusting rod, and the other end of the sleeve is movably sleeved on the sleeve.
6. The pneumatic rotary valve piston metering pump according to claim 5, wherein the inner end surface of the micrometer adjusting rod is further provided with a mounting groove, the inner wall of the mounting groove is further provided with a plurality of through holes, the through holes are uniformly distributed at intervals in the circumferential direction of the micrometer adjusting rod, and the plurality of through holes are internally provided with sliding locking pins; the length of the sliding pin is greater than the depth of the through hole, and the inner end of the locking pin is conical; the bottom of the mounting groove is also provided with a locking push pin for pushing the locking pin, and the push-out end of the locking push pin is conical; and the micrometer adjusting rod is also provided with a screw for pushing the locking pushing pin.
7. The pneumatic rotary valve piston metering pump according to claim 1, wherein the rotary valve driving mechanism is fixedly installed at one side of the rotary valve unit, and the rotary valve driving mechanism comprises a second cylinder body, a second piston chamber opened in the second cylinder body; a slidable second piston rod is arranged in the second piston cavity, the front end of the second piston rod penetrates through the second piston cavity to extend forwards, and a rack is fixedly arranged at the extending end of the second piston rod; and a rotating transmission shaft is further arranged on the second cylinder body, a gear meshed with the rack is fixedly arranged on the transmission shaft, and one end of the transmission shaft penetrates through the second cylinder body and is connected with the valve core.
8. The pneumatic rotary valve piston metering pump according to claim 7, wherein a sliding second cylinder piston is further installed in the second cylinder body, and the second cylinder piston is fixed with a second piston rod; and a third air inlet channel and a fourth air inlet channel are also formed in the second cylinder body, and the third air inlet channel and the fourth air inlet channel are respectively communicated with two ends of the second piston cavity.
9. The pneumatic rotary valve piston metering pump according to claim 7 or 8, wherein the second cylinder is further provided with a fixing groove, and the fixing groove is positioned above the rack; a rotating installation shaft is installed in the fixed groove, and the middle section of the installation shaft is eccentric; the middle section of installation axle is installed the pivoted bearing, and the excircle face and the rack of bearing compress tightly.
10. The pneumatic rotary valve piston metering pump according to claim 7 or 8, wherein a driving block is further fixedly mounted on the transmission shaft; a valve core driving cover is fixedly arranged on the valve core, and the driving block is connected with the valve core driving cover key; the center of the driving block is also provided with a groove, a bolt is inserted in the groove, the outer end of the bolt is tightly abutted against the valve core driving cover, and the bottom of the groove is provided with a compression spring for pushing the bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921122788.8U CN210479097U (en) | 2019-07-17 | 2019-07-17 | Pneumatic rotary valve piston metering pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921122788.8U CN210479097U (en) | 2019-07-17 | 2019-07-17 | Pneumatic rotary valve piston metering pump |
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| Publication Number | Publication Date |
|---|---|
| CN210479097U true CN210479097U (en) | 2020-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921122788.8U Active CN210479097U (en) | 2019-07-17 | 2019-07-17 | Pneumatic rotary valve piston metering pump |
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| CN (1) | CN210479097U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113187720A (en) * | 2021-02-04 | 2021-07-30 | 上海维驿投资管理有限公司 | Flow pump |
| CN114653537A (en) * | 2022-03-22 | 2022-06-24 | 厦门丛蔚科技有限公司 | Continuous glue-discharging type plunger valve |
-
2019
- 2019-07-17 CN CN201921122788.8U patent/CN210479097U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113187720A (en) * | 2021-02-04 | 2021-07-30 | 上海维驿投资管理有限公司 | Flow pump |
| CN114653537A (en) * | 2022-03-22 | 2022-06-24 | 厦门丛蔚科技有限公司 | Continuous glue-discharging type plunger valve |
| CN114653537B (en) * | 2022-03-22 | 2023-01-03 | 厦门丛蔚科技有限公司 | Continuous glue-discharging type plunger valve |
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