阅读说明：本技术 一种拨动式开合装卡结构总成及蠕动泵泵头 (Shifting type opening and closing clamping structure assembly and peristaltic pump head ) 是由 孙巍 曹晓鹏 于 2019-09-29 设计创作，主要内容包括：本发明公开了一种拨动式开合装卡结构总成,包括相对设置用于形成一对用于软管卡箍的的下管卡、上管卡,用于升降开合的上压块,还包括用于使得上管卡跟随上压块升降滑移随动的拨杆,所述的拨杆与上压块枢接以联结,上管卡及拨杆的一端交叠的设置在上压块预留的卡口中,所述的拨杆的另一端抵接在作为固定基准的固定部处,所述的上压块升降过程中带动上管卡升降同时拨杆跟随上升且抬起上管卡使得上管卡远离下管卡。固定部底面设置为斜面,斜面可以匹配拨杆滑移过程中的滑动轨迹,拨动块跟随举起上管卡,动作链连贯高效,防止拨杆磨损,本机构简单精巧,高效,可靠性高。(The invention discloses a toggle type opening and closing clamping structure assembly which comprises a lower pipe clamp and an upper pipe clamp which are oppositely arranged and used for forming a pair of hose clamps, an upper pressing block used for opening and closing in a lifting mode, and a shifting lever used for enabling the upper pipe clamp to follow the upper pressing block to slide in a lifting mode, wherein the shifting lever is pivoted with the upper pressing block to be connected, one ends of the upper pipe clamp and the shifting lever are arranged in a reserved bayonet of the upper pressing block in an overlapped mode, the other end of the shifting lever abuts against a fixing part used as a fixing reference, and the upper pressing block is lifted while the upper pipe clamp is driven to lift and the shifting lever is lifted to enable the upper pipe clamp to be far away from the lower pipe clamp. The bottom surface of the fixing part is provided with an inclined plane which can be matched with a sliding track of the shifting rod in the sliding process, the shifting block lifts the upper pipe clamp along with the shifting rod, the action chain is coherent and efficient, the shifting rod is prevented from being abraded, and the mechanism is simple, exquisite, efficient and high in reliability.)

1. The utility model provides a toggle type dress card structure assembly that opens and shuts, includes the last pipe strap that is used for forming the clamp hose relatively, is used for going up briquetting, its characterized in that opens and shuts of going up and down: also comprises a deflector rod which is used for leading the upper pipe clamp to follow the ascending, descending, sliding and following of the upper pressing block,

the shifting rod is pivoted with the upper pressing block to be connected, one end of the upper pipe clamp and one end of the shifting rod are arranged in a bayonet reserved in the upper pressing block in an overlapped mode, the other end of the shifting rod abuts against a fixing portion serving as a fixing reference, the shifting rod swings under the action of the fixing portion, and the upper pipe clamp is lifted up to enable the upper pipe clamp and the upper pressing block to generate relative displacement and be higher than the position where the upper pressing block is lifted.

2. The assembly of claim 1, wherein: the fixed part is arranged on the body, the body is matched with the upper pressing block in a sliding mode, the lower edge of the fixed part is provided with a sliding surface for the shifting rod to slide, and when the upper pressing block moves upwards, one end of the shifting rod slides along the sliding surface, the other end of the shifting rod lifts the upper pipe clamp.

3. The assembly of claim 1, wherein: the upper pressing block is provided with a groove for limiting the upper pipe clamp and the shifting lever, and the upper pipe clamp is limited in the groove.

4. The assembly of claim 3, wherein: the upper pipe clamp penetrates through the groove and is opposite to the lower pipe clamp, and the upper pipe clamp and the groove are in clearance fit to form a sliding arrangement.

5. The assembly of claim 3, wherein: the shifting rod is pivoted in the groove through a pivot, one end of the shifting rod extends into the lower portion of the top platform of the upper pipe clamp, and the shifting rod guides and limits the upper pipe clamp in the vertical direction.

6. A toggle type opening and closing clamping structure assembly according to any one of claims 3-5, characterized in that: still include return spring, return spring connects between last pipe strap and recess top, and return spring pushes back the pipe strap in vertical direction.

7. The assembly of claim 1, wherein: the shift lever has two lever arms that move synchronously about a central pivot.

8. A peristaltic pump head comprising the toggle type opening and closing clamping structure assembly as claimed in any one of claims 1 to 7, comprising a pump head body, wherein a hose path for clamping a hose is isolated from the inside of the pump head body, characterized in that:

the lower support with go up the briquetting and be located the same side of body encloses the synthetic wriggling chamber that is used for placing the hose, the hose route by the process the wriggling chamber outer fringe, the both ends in hose route are equipped with and have at least one fixed part and the corresponding formula of stirring dress card structure assembly that opens and shuts, the fixed part be located the body.

9. A peristaltic pump head as claimed in claim 8, wherein: the upper pipe clamp penetrates through the groove of the upper pressing block and is oppositely arranged with the lower pipe clamp to form an intersection for clamping the hose.

10. A peristaltic pump head as claimed in claim 8, wherein: the pump head body is provided with an opening for the deflector rod to penetrate out to the lower part of the fixing part.

Technical Field

The invention relates to the field of peristaltic pump mechanisms, in particular to a toggle type opening and closing clamping structure assembly and a peristaltic pump head.

Background

The peristaltic pump is a special volumetric pump, is mainly applied to the distribution or conveying of fluid, and is widely applied to the industries of pharmacy, food, chemical industry and the like. The device is mainly applied to the distribution or the transportation of fluid. When the peristaltic pump head works, the rollers rotate, a section of pump pipe between the two rollers forms a 'pillow' shaped fluid, and the fluid is pumped by alternately squeezing and releasing the elastic conveying hose of the pump. The hose is a consumable and needs to be replaced periodically.

When an existing peristaltic pump head is designed, an upper pipe clamp is generally fixed on an upper pressing block and moves up and down along with the upper pressing block, and no relative displacement exists between the upper pipe clamp and the upper pressing block. The upper pressing block is driven by an eccentric shaft mechanism in the peristaltic pump head to move up and down, and the eccentricity of an eccentric wheel in the eccentric shaft mechanism is the up-and-down movement displacement of the upper pressing block and the upper pipe clamp. When the peristaltic pump head is used for replacing a hose, the upper pressing block and the upper pipe clamp are fixed into a whole, and the relative displacement among the upper pipe clamp, the lower pipe clamp and the lower support is fixed in size (the relative displacement is equal to the eccentricity of the eccentric wheel). The eccentricity is 2 times of the distance between the center of the connecting shaft mounting hole on the eccentric wheel and the circle center of the eccentric wheel.

The pump head of the peristaltic pump is limited in overall size, the eccentric wheel is limited in size, and therefore the lifting height of the upper pressing block is limited, and the space between the upper pipe clamp and the lower pipe clamp and the space between the upper pipe clamp and the lower support are narrow. When the hose is replaced, the upper pipe clamp needs to be lifted up or the lower pipe clamp needs to be pressed down manually after the upper pressing block is lifted up, so that the operation is very inconvenient, and particularly, the hose with a large pipe diameter is very inconvenient to replace.

Disclosure of Invention

The invention aims to solve the problems that the damage to a hose is uncontrollable and the replacement steps of the hose are complicated and frequent when the hose is installed in the conventional peristaltic pump liquid feeding mechanism, and provides an eccentric liquid feeding mechanism.

The invention aims to solve the problems and is realized by the following technical scheme:

the utility model provides a toggle type dress card structure assembly that opens and shuts, is used for forming a pair of lower pipe strap, the last pipe strap that is used for the hose clamp including relative setting for go up the briquetting that opens and shuts in going up and down, still including being used for making the last pipe strap follow the driving lever that the briquetting goes up and down to slide the follow-up.

The shifting rod is pivoted with the upper pressing block to be connected, the upper pipe clamp and one end of the shifting rod are arranged in a bayonet reserved in the upper pressing block in an overlapped mode, the other end of the shifting rod abuts against a fixing portion serving as a fixing reference, and the upper pressing block is driven to lift and simultaneously lifted by the shifting rod in the lifting process of the upper pressing block, so that the upper pipe clamp is far away from the lower pipe clamp.

Furthermore, the fixed part is arranged on the body, the body is matched with the upper pressing block in a sliding mode, the lower edge of the fixed part is provided with a slope sliding surface for the shifting lever to slide, and when one end of the shifting lever slides along the sliding surface in the shifting process of the upper pressing block, the other end of the shifting lever lifts the upper pipe clamp.

Furthermore, the upper pressing block is provided with a groove for limiting the upper pipe clamp and the shifting lever, and the upper pipe clamp is limited in the groove.

Further, the upper pipe clamp penetrates through the groove to be opposite to the lower pipe clamp, and the upper pipe clamp and the groove are in clearance fit to form a sliding arrangement.

Furthermore, the shifting rod is pivoted in the groove through a pivot, one end of the shifting rod extends into the lower portion of the top platform of the upper pipe clamp, and the shifting rod guides and limits the upper pipe clamp in the vertical direction.

Furthermore, the pipe clamp further comprises a return spring, the return spring is connected between the upper pipe clamp and the top of the groove, and the return spring pushes the upper pipe clamp back in the vertical direction.

Further, the shift lever has two lever arms that move synchronously about the central pivot.

The utility model provides a peristaltic pump head, includes the pump head body, this internal isolated hose route that is used for the card to go into the hose of pump head, its characterized in that: the upper pressing block is matched with an opening reserved in the pump head body, at least one fixing part and a corresponding toggle type opening-closing clamping structure assembly are arranged on any one side of the pump head, and the fixing part is located on the body.

Furthermore, an opening is formed in the pump head body for the deflector rod to penetrate out of the fixing portion.

Compared with the prior art, the invention has the following beneficial effects:

the poking block is fixed on the upper pressing block through a pin shaft and can rotate around the pin shaft. One end of the shifting block is used for lifting the upper pipe clamp, one end of the shifting block penetrates through an opening which is arranged on the body and used for shifting the shifting block to move, the shifting block is propped against the inclined plane of the jacking shifting block of the body, and the inclined plane of the jacking shifting block of the body is fixed. In the process that the stirring block is lifted along with the upper pressing block, one end of the stirring block rotates anticlockwise around the pin shaft under the action of the inclined plane, and the other end of the stirring block can stir the upper pipe clamp to move upwards relative to the upper pressing block, so that the relative displacement between the upper pipe clamp and the lower pipe clamp as well as the lower support is increased, and the operation space for installing the hose is increased.

The driving lever structure is exquisite and small, is beneficial to being integrated in the pump head, and in the use, can turn over automatically, it is big to lift up pipe strap displacement volume, and the action links up.

The mechanism is provided with at least two sets of the gear-driven gear, which are respectively arranged on two sides of the pump.

The bottom surface of the fixing part is provided with an inclined plane which can be matched with a sliding track of the shifting lever in the sliding process, so that the shifting lever is prevented from being abraded, and the mechanism is simple, exquisite, efficient and high in reliability.

Drawings

Fig. 1 is a side view of a toggle type opening and closing card.

FIG. 2 is a view showing the structure of the toggle type opening and closing clip.

Fig. 3 is a block closing structure diagram of the peristaltic pump.

Figure 4 is a block lifting structure view of the peristaltic pump.

Description of reference numerals:

the pipe clamp comprises an upper pipe clamp 1, a bending part 2, a groove 3, a deflector rod 4, a fixing part 5, a return spring 6 and an opening 7.

Detailed Description

The invention is further described below with reference to fig. 1-4: