CN203348070U - Rapidly assembled peristaltic pump clamp piece type pump head - Google Patents
Rapidly assembled peristaltic pump clamp piece type pump head Download PDFInfo
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- CN203348070U CN203348070U CN 201320429256 CN201320429256U CN203348070U CN 203348070 U CN203348070 U CN 203348070U CN 201320429256 CN201320429256 CN 201320429256 CN 201320429256 U CN201320429256 U CN 201320429256U CN 203348070 U CN203348070 U CN 203348070U
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- card
- latch hook
- supporting plate
- clamp piece
- pipe clamp
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Abstract
The utility model discloses a rapidly assembled peristaltic pump clamp piece type pump head which comprises a front supporting plate, a rear supporting plate, a roller device and clamp piece devices. The front supporting plate is fixedly connected with the rear supporting plate through supporting rods, the roller device is mounted between the front supporting plate and the rear supporting plate, each clamp piece device mainly comprises a clamp piece support and a clamp piece, the lower end of each clamp piece support is forked, the clamp piece devices are hung on the supporting rods and matched with the roller device, and a through groove for clamping an elastic hose is formed in the bottom of each clamp piece device. A bayonet I matched with each supporting rod is formed in the lower portion of a fork I of each clamp piece support, a downward notch is formed in the lower portion of a fork II of each clamp piece support, an elastic lock hook matched with the notch is arranged on the outer side of each clamp piece support, and an inclined plane is arranged on the inner side of the lower end of each lock hook. The clamp piece devices can be conveniently and rapidly disassembled and assembled and cannot deform after repeated disassembly and assembly, the service lives of the clamp piece devices are prolonged, and cost is reduced.
Description
Technical field
The utility model relates to a kind of pump head of peristaltic pump, specifically a kind of card type pump head of peristaltic pump.
Background technique
Peristaltic pump is a kind of novel fluid transfer pump after rotor pump, centrifugal pump, diaphragm pump etc., and peristaltic pump is a kind of liquid transporting apparatus of controllable flow speed, and it is just extensively promoted in the application of medical treatment, food, chemical industry, smelting etc. every profession and trade.Peristaltic pump mainly is comprised of driver, pump head and elastic hose, and peristaltic pump makes the fluid in elastic hose move towards certain orientation by elastic hose is hocketed extruding and release.
Pump head is the important component part of peristaltic pump, in order to realize continuously extruded elastic hose, completes the function that fluid is carried.The pump head of the peristaltic pump used at present mainly contains two kinds of forms, and wherein a kind of form is pressing block type, and the pressing block type pump head generally is comprised of briquetting, support plate, body and rotary roller.Support plate and body are mainly used in the fixed idler whell device.Briquetting can slide vertically, and when elastic hose is installed: at first upwards lift briquetting, the gap of briquetting and rotary roller increases, and after inserting elastic hose, then moves down briquetting, and the gap between briquetting and rotary roller is reduced, and pushes down elastic hose.After briquetting drops to limit position, form the gap that compresses elastic hose between excircle track when briquetting and rotary roller rotate.If need to use the elastic hose of different-diameter, need briquetting is pulled down, then change elastic hose.This substitute mode troublesome poeration, and can, because of the improper damage caused elastic hose in gap, shorten the working life of elastic hose.
Also having a kind of peristaltic pump is to adopt the card type pump head, as described in Chinese patent literature CN202091174U and CN2804432Y.The card type pump head comprises front supporting plate and rear supporting plate, and front supporting plate and rear supporting plate are connected to one by two struts, and rotary roller is arranged between front supporting plate and rear supporting plate.Be arranged with card-type device at the rotary roller outer ring, card-type device comprises the card support, card support clamping or be hooked on the cylindrical outside of rotary roller.Be provided with downward circular arc type opening on the card support, the lower end head of a fork of circular arc type opening is provided with the draw-in groove coordinated with strut, the lower end head of another fork is provided with the hook of an activity, after draw-in groove being snapped in to a strut, the hook of the other end hooks on the pump head matrix or hooks on another root strut, like this card support is connected on pump head.Bottom at two forks of card support open lower end, the groove of also inwardly offering perpendicular to opening is set respectively, groove for holding, fixing elastic hose, groove in two forks to offer direction consistent, on elastic hose is put into the excircle of rotary roller, by after the clamping of card support, two grooves are stuck in elastic hose the both sides of rotary roller.Inner top at card support circular arc also arranges a card, and the effect of card is equivalent to briquetting, by card and rotary roller, forms the extruding needed gap of elastic hose, rotary roller extruding elastic hose, and card is as the basis be extruded.
Current card-type device is connected or has cumbersome problem with pump head.In CN2804432Y, need by a snap close seat, a snap close, card-type device manually to be connected on pump head.CN202091174U also needs to operate manually hook and is installed or dismantles.
The model utility content
The utility model technical issues that need to address are to provide a kind of peristaltic pump card type pump head of dismounting card-type device that can be easily and fast.
For solving the problems of the technologies described above, the technological scheme that the utility model adopts is:
A kind of fast-assembling peristaltic pump card type pump head, comprise the front supporting plate and the rear supporting plate that are fixedly connected with by strut, be arranged on the rotary roller between front supporting plate and rear supporting plate, the bottom that being articulated in of mainly consisting of the card support of lower end jag and card coordinates with rotary roller on strut is with the card-type device of the groove of clamping elastic hose, the fork I bottom of described card support is provided with the bayonet socket I coordinated with strut, the bottom of the fork II of card support is provided with downward breach, the arranged outside of card support has the flexible latch hook that has coordinated with breach, inboard, latch hook lower end is provided with inclined-plane.
A kind of structure of the utility model latch hook is: latch hook is fixed on the outer side surface of card support, and the hook of latch hook is as having flexible shell fragment.
The another kind of structure of the utility model latch hook is: latch hook is hinged on the card support by the latch hook locating stud, between the position of corresponding latch hook locating stud end above the latch hook locating stud and card support, is provided with the latch hook spring that latch hook is resetted.
Further improvement of the utility model is: be respectively arranged with the boss of suit latch hook spring on described latch hook top and card support, the latch hook spring is arranged on boss; The arranged outside of latch hook is convenient to the spanner gripped.
Further improvement of the utility model is: the working surface of described card is one section circular arc and is arranged on circular arc two ends the tangent line compensator section tangent with circular arc.
Further improvement of the utility model is: an end of described card is hinged in the circular arc opening on the card support by the card locating stud, the adjusting screw that is provided for regulating the card upper-lower position on the card support corresponding with the other end of card; Be set with Regulation spring on adjusting screw; The position that card is corresponding with adjusting screw arranges a plane.
Further improvement of the utility model is: described card-type device also comprise be separately positioned on card support both sides, for limiting the upper pipe clamp of elastic hose in the mounting point of pump head, described upper pipe clamp is slidably arranged in the chute of card support both sides, the lower end of upper pipe clamp is provided with V-type groove corresponding to elastic hose, and the top of upper pipe clamp is provided with the pipe clamp spring that pipe clamp is resetted.
Further improvement of the utility model is: the front supporting plate be fixedly connected with and the strut of rear supporting plate have in twos symmetrical four, the latch hook of top two bottom of the fork I for clamping card support bayonet socket I and card-type device; Below two respectively and be positioned on two above homonymy also arrange respectively corresponding to upper pipe clamp limiting the lower pipe clamp of elastic hose.
Owing to having adopted technique scheme, the technological progress that the utility model is obtained is:
The utility model can the fast assembling-disassembling card-type device by the flexible latch hook that has that is arranged on the card support outside, be convenient for changing elastic hose, and card-type device can not deform after repeatedly repeating dismounting yet, extended the working life of card-type device, reduced cost.The bayonet socket I of the fork I bottom of card support coordinates with strut, hook is on a side strut, the breach of fork II bottom and latch hook coordinate the formation internal cavities, catch on strut for parcel, prevent that hook from detaching strut, make spacing more reliably, avoid card-type device to slide up and down the generation displacement, guarantee stable working state.Fork I and fork II, all for the positioning cards device, prevent that card-type device from producing displacement, guarantee that pump head is in optimum working state.The inboard, lower end of latch hook is set to inclined-plane, when the installing card sheet devices, only need directly press down card-type device, can utilize the leading role on inclined-plane that the hook of latch hook lower end is directly snapped fit onto on strut, card-type device easy for installation, quick.
Between latch hook and card support, the latch hook spring is set, is conducive to the reply of latch hook, make latch hook in the raw the time, the hook of bottom is fixed on strut, and the spanner of the arranged outside of latch hook is convenient to grip, convenient, laborsaving during the handling card-type device.
The working surface of card is for by circular arc be arranged on the circular arc two ends and form with the tangent tangent line compensator section of circular arc, and when the design of tangent line compensator section has delayed to carry fluid, the impact of fluid to working surface, effectively reduce the pulsation produced when pump head is carried fluid.Free end at card arranges adjusting screw, regulate the upper-lower position of card by adjusting screw, with the gap between regulating and controlling card and rotary roller, make card moderate to the impacting force of elastic hose, make whole peristaltic pump reach optimum working state, reduce the infringement to elastic hose, extended the working life of elastic hose, reduced the user cost of peristaltic pump.The card place corresponding with adjusting screw arranges plane, makes the area of contact maximum of card and adjusting screw, and strength is also maximum, stablizes the working state of pump head.
Be set with Regulation spring on adjusting screw, carry in the working procedure of fluid at pump head, prevent that adjusting screw is loosening, damage elastic hose while causing card excessive to the impacting force of elastic hose; Do not reach when impacting force is too small and carry the needed the optimum state of fluid.
Pipe clamp and the lower pipe clamp corresponding with upper pipe clamp are set respectively in card support both sides, for limiting the mounting point of elastic hose at pump head, prevent from carrying flow liquid process Elastic flexible pipe wobble effects to carry effect.The V-type groove that the lower end of upper pipe clamp arranges coordinates the chucking elastic hose with lower pipe clamp, the top of upper pipe clamp arranges the pipe clamp spring, is conducive to resetting of pipe clamp; Realize that upper pipe clamp is installed to the self adaption of elastic hose after installing elastic hose, alleviate the infringement to elastic hose, extended the working life of elastic hose.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is plan view of the present utility model;
Fig. 3 is the structural representation of card-type device in the utility model;
Fig. 4 is the side view of card-type device in the utility model;
Fig. 5 is the structural representation of card in the utility model;
Fig. 6 is the structural representation of front supporting plate in the utility model;
Fig. 7 is the structural representation of rear supporting plate in the utility model;
Fig. 8 is the structural representation of lower pipe clamp installment state in the utility model.
Wherein, 1, card-type device, 2, rear supporting plate, 3, lower pipe clamp, 4, the strut I, 5, rotary roller, 6, front supporting plate, 7, adjusting screw, 8, the latch hook locating stud, 9, the card locating stud, 10, latch hook, 11, card, 12, Regulation spring, 13, the strut II, 14, sleeve, 15, boss, 16, upper pipe clamp, 17, the pipe clamp spring, 18, the latch hook spring, 19, roller, 20, spanner, 21, the card support, 22, the pipe clamp fixed block, 23, the circular arc tangential line compensator section, 24, the fork I, 25, the fork II, 26, the bayonet socket I, 27, breach, 28, inclined-plane.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further details:
Embodiment 1
A kind of quick mounting type Peristaltic pump head, its structure as shown in Figure 1, comprises card-type device 1, rotary roller 5, front supporting plate 6 and rear supporting plate 2.
Described front supporting plate 6 and rear supporting plate 2 are arranged on the two ends of Peristaltic pump head, and the structure of front supporting plate 6 as shown in Figure 6; The structure of rear supporting plate 2 as shown in Figure 7.Front supporting plate 6 is fixedly connected with strut II 13 by strut I 4 with rear supporting plate 2, and strut I and strut II are two, is symmetricly set in twos between front supporting plate 6 and rear supporting plate 2.Be fixedly installed respectively pipe clamp 3 on the strut I of homonymy and strut II, the structure of lower pipe clamp 3 and install and use state as shown in Fig. 1 and Fig. 8, offer two through holes on lower pipe clamp 3, the internal diameter size of two through holes is corresponding with the external diameter of strut I and strut II respectively, and lower pipe clamp 3 is fixed on the strut I and strut II that is positioned at homonymy by two through holes.
Between front supporting plate 6 and rear supporting plate 2, rotary roller 5 also is set, the structure of described rotary roller 5 as shown in Figure 2, comprises a disk, roller bearing and six roots of sensation roller 19.Described roller bearing is arranged on the center of disk, six roots of sensation roller 19 take the roller bearing center as the center of circle, be evenly arranged on the excircle of disk.Roller bearing is connected with the driver of peristaltic pump, starts roller bearing rotation after driver, drive disk and roller and rotate, by disk and roller to hocket extruding and discharge and carry the fluid in elastic hose of elastic hose.
Described card-type device 1 is arranged between front supporting plate 6 and rear supporting plate 2.Card-type device 1 has the circular arc opening, and the circular arc opening is corresponding with the excircle of the disk of rotary roller 5, is formed for holding the space of elastic hose.The structure of described card-type device 1, as shown in Fig. 2～Fig. 5, comprises card 11 and card support 21.
The housing that described card support 21 is a lower ending opening, the middle part, lower end of housing is the circular arc opening, the both sides of circular arc opening are respectively fork I 24 and fork II 25, wherein pitch the I bottom and be provided with bayonet socket I 26 on shell body wall, and the bayonet socket I matches with the strut I.The bottom of fork II is provided with downward breach 27 on shell body wall.
One end of described card 11 is by the hinged circular arc opening be arranged on card support 21 of card locating stud 9, the excircle of the working surface of card 11 and rotary roller 5 be kept for the being installed gap of elastic hose; The working surface of card 11 comprises one section circular arc and is arranged on circular arc two ends the tangent line compensator section 23 tangent with circular arc, the tangent line compensator section 23 at circular arc two ends is all complied with tangentially being comprised of one or more snippets of circular arc, the pulsation that tangent line compensator section 23 produces when carrying fluid.
The other end of card 21 is free end, and free-ended top arranges a plane.Position corresponding with the free-ended plane of card 21 on card support 21 arranges adjusting screw 7, and adjusting screw 7 bottoms are set with a sleeve 14, the bottom of described sleeve 14 and card support 21 apical graftings; Adjusting screw 7 top suit Regulation springs 12, Regulation spring 12 and sleeve 14 phase apical graftings.By precession or back-out adjusting screw 7, can adjust the working surface of card and the gap between rotary roller 5 excircles.The position that card is corresponding with adjusting screw 7 is set to plane, makes area of contact maximum between the two, and the strength maximum is in stable condition while guaranteeing pump head work.
By the hinged latch hook 10 that arranges of latch hook locating stud 8, be provided with latch hook spring 18 at the outer side surface of card support 21 above latch hook locating stud 8.On card the support 21 and top of latch hook 10 correspondence respectively arranges a boss 15, and latch hook spring 18 is fixedly installed between two boss, for making resetting of latch hook 10.Latch hook 10 tops are the cube rod body structure, and the trend that latch hook 10 is complied with in latch hook 10 bottoms is divided into two sections branches, between two sections branches, are the groove caved inward, for holding, clamp elastic hose.Two sections branch bottoms all are set to hook-shaped, and the inboard of hook bottom arranges inclined-plane 28.Hook matches and forms an internal cavities with the breach 27 of fork II 25 bottoms of card support 21, and internal cavities is held the strut I tightly for parcel.The arranged outside of latch hook 10 is convenient to the spanner 20 gripped.
Card-type device 1 also comprises that 16, two upper pipe clamps 16 of two upper pipe clamps are slidably arranged in by pipe clamp fixed block 22 in the chute of card support 21 both sides, and on one of them, pipe clamp 16 is positioned at the top of bayonet socket I 26; On another, pipe clamp 16 is positioned at the top of breach 27, and two upper pipe clamps 16 also all need to be positioned at the top of lower pipe clamp 3 simultaneously.Upper pipe clamp 16 and the corresponding cooperation of lower pipe clamp 3, for limiting the mounting point of elastic hose at Peristaltic pump head.As shown in Figure 4, the lower end of upper pipe clamp 16 is provided with V-type groove corresponding to elastic hose, coordinates with lower pipe clamp 3 and is used for holding and locating elastic hose.Top at upper pipe clamp 16 also is provided with pipe clamp spring 17, and pipe clamp spring 17 is controlled the position of pipe clamp 16 by restoring force, realizes the self adaption adjustment of elastic hose is installed, and makes the suffered impacting force of elastic hose by connecting and fixing moderate.
In the utility model, the disassembly process of card-type device is:
During installing card sheet devices 1, the bayonet socket I 26 that first will pitch I 24 clamps to a strut I 4, again card-type device 1 is inserted downwards, the breach 27 of fork II 25 contacts with another root strut I 4, under the leading role on the inclined-plane of inboard, latch hook lower end, the strut I moves latch hook 10 laterally, under the restoring force effect of latch hook spring 18, latch hook 10 moves to the inside, the hook of latch hook 10 bottoms hooks strut I 4, breach 27 coordinates formation one enclose inside cavity with the hook of latch hook 10 bottoms, hold strut I 4 tightly.
Dismounting during card-type device 1, moves spanner 20, latch hook 10 around latch hook locating stud 8 to inner rotary, the hook of bottom and 4 disengagings of strut I, upwards promote card-type device 1 afterwards.
For increasing the quantity delivered of carrying fluid, improve the utilization ratio of machine, described pump head can be installed a plurality of card-type devices 1 are set, and realizes the multichannel conveying.
The present embodiment and embodiment's 1 difference is:
Outer side surface setting at card support 21 has flexible latch hook 10, and the hook of latch hook 10 is as having flexible shell fragment, as the steel spring sheet.The upper end of shell fragment is overall structure; The shell fragment lower end is divided into two strands, and middle part is the groove caved inward, and both sides all are set to hook-shaped, and hook matches and forms an internal cavities with the breach 27 of fork II 25 bottoms, and internal cavities is held strut I 4 tightly for parcel.The inboard of hook bottom arranges inclined-plane 28.
Claims (8)
1. a fast-assembling peristaltic pump card type pump head, comprise the front supporting plate (6) and the rear supporting plate (2) that are fixedly connected with by strut, be arranged on the rotary roller (5) between front supporting plate (6) and rear supporting plate (2), the bottom mainly coordinated with rotary roller (5) on strut by being articulated in of the card support (21) of lower end jag and card (11) formation is with the card-type device (1) of the groove of clamping elastic hose, it is characterized in that: fork I (24) bottom of described card support (21) is provided with the bayonet socket I (26) coordinated with strut, the bottom of the fork II (25) of card support (21) is provided with downward breach (27), the arranged outside of card support (21) have with breach (27), coordinate there is flexible latch hook (10), latch hook (10) inboard, lower end is provided with inclined-plane (28).
2. a kind of fast-assembling peristaltic pump card type pump head according to claim 1, it is characterized in that: latch hook (10) is fixed on the outer side surface of card support (21), and the hook of latch hook (10) is as having flexible shell fragment.
3. a kind of fast-assembling peristaltic pump card type pump head according to claim 1, it is characterized in that: it is upper that latch hook (10) is hinged on card support (21) by latch hook locating stud (8), between the position of corresponding latch hook locating stud (8) end, the top of latch hook locating stud (8) and card support (21), is provided with the latch hook spring (18) that latch hook (10) is resetted.
4. a kind of fast-assembling peristaltic pump card type pump head according to claim 3, it is characterized in that: be respectively arranged with the boss (15) of suit latch hook spring (18) on described latch hook (10) top and card support (21), latch hook spring (18) is arranged on boss; The arranged outside of latch hook (10) is convenient to the spanner (20) gripped.
5. a kind of fast-assembling peristaltic pump card type pump head according to claim 1 is characterized in that: the working surface of described card (11) is one section circular arc and is arranged on circular arc two ends the tangent line compensator section (23) tangent with circular arc.
6. according to claim 1 or the described a kind of fast-assembling peristaltic pump card type pump head of 5 any one, it is characterized in that: an end of described card (11) is hinged in the circular arc opening on card support (21) by card locating stud (9), the adjusting screw (7) that is provided for regulating card (11) upper-lower position on the card support (21) corresponding with the other end of card (11); Be set with Regulation spring (12) on adjusting screw (7); The position that card (11) is corresponding with adjusting screw (7) arranges a plane.
7. a kind of fast-assembling peristaltic pump card type pump head according to claim 1, it is characterized in that: described card-type device (1) also comprise be separately positioned on card support (21) both sides, for limiting the upper pipe clamp (16) of elastic hose in the mounting point of pump head, described upper pipe clamp (16) is slidably arranged in the chute of card support (21) both sides, the lower end of upper pipe clamp (16) is provided with V-type groove corresponding to elastic hose, and the top of upper pipe clamp (16) is provided with the pipe clamp spring (17) that pipe clamp (16) is resetted.
8. a kind of fast-assembling peristaltic pump card type pump head according to claim 7, it is characterized in that: the strut of the front supporting plate be fixedly connected with (6) and rear supporting plate (2) has in twos symmetrical four, top two (24) bottom bayonet socket I of the fork I for clamping card support (21) (26) and the latch hook (10) of card-type device (1); Below two respectively and be positioned on two above homonymy also arrange respectively corresponding to upper pipe clamp (16) limiting the lower pipe clamp (3) of elastic hose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320429256 CN203348070U (en) | 2013-07-19 | 2013-07-19 | Rapidly assembled peristaltic pump clamp piece type pump head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320429256 CN203348070U (en) | 2013-07-19 | 2013-07-19 | Rapidly assembled peristaltic pump clamp piece type pump head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203348070U true CN203348070U (en) | 2013-12-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320429256 Expired - Lifetime CN203348070U (en) | 2013-07-19 | 2013-07-19 | Rapidly assembled peristaltic pump clamp piece type pump head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203348070U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837758A (en) * | 2017-04-07 | 2017-06-13 | 安徽佳乐建设机械有限公司 | A kind of new-type of hose pump |
| CN109707603A (en) * | 2019-03-18 | 2019-05-03 | 保定申辰泵业有限公司 | A kind of linkage mechanism, Peristaltic pump head and the peristaltic pump of folding and the hose that is loaded |
| CN109944782A (en) * | 2019-05-13 | 2019-06-28 | 常州普瑞流体技术有限公司 | A kind of Peristaltic pump head |
| CN110645166A (en) * | 2019-09-29 | 2020-01-03 | 保定申辰泵业有限公司 | Shifting type opening and closing clamping structure assembly and peristaltic pump head |
| CN112901466A (en) * | 2021-01-29 | 2021-06-04 | 深圳华星恒泰泵阀有限公司 | Peristaltic pump |
-
2013
- 2013-07-19 CN CN 201320429256 patent/CN203348070U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837758A (en) * | 2017-04-07 | 2017-06-13 | 安徽佳乐建设机械有限公司 | A kind of new-type of hose pump |
| CN109707603A (en) * | 2019-03-18 | 2019-05-03 | 保定申辰泵业有限公司 | A kind of linkage mechanism, Peristaltic pump head and the peristaltic pump of folding and the hose that is loaded |
| CN109707603B (en) * | 2019-03-18 | 2024-03-22 | 保定申辰泵业有限公司 | Linkage mechanism for opening and closing and clamping hose, peristaltic pump head and peristaltic pump |
| CN109944782A (en) * | 2019-05-13 | 2019-06-28 | 常州普瑞流体技术有限公司 | A kind of Peristaltic pump head |
| CN110645166A (en) * | 2019-09-29 | 2020-01-03 | 保定申辰泵业有限公司 | Shifting type opening and closing clamping structure assembly and peristaltic pump head |
| CN112901466A (en) * | 2021-01-29 | 2021-06-04 | 深圳华星恒泰泵阀有限公司 | Peristaltic pump |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131218 |