Lower driving and quantity adjusting device for piston pump

Abstract

The utility model discloses a lower driving and quantity adjusting device for a piston pump. The lower driving and quantity adjusting device comprises a machine base, a driving component and a quantity adjusting component. The engine base consists of an engine base main body, an engine base upper part arranged above the engine base main body and used for fixing the piston pump, and an engine base lower part arranged below the engine base main body and used for fixing the driving part and the quantity adjusting part; the driving component is composed of a driving air cylinder, a sliding rail, a first sliding block, a driving block, a first clamping groove, a first buckle, a second buckle, a second clamping groove, a shaft sleeve, a multi-stage flange, an air cylinder rod, a material cylinder piston rod and a material cylinder piston. The quantity adjusting component is composed of a quantity adjusting handle, a digital display meter, a locking handle, a first bearing seat, a nut, a second sliding block, a buffer cap, a quantity adjusting pointer, a lead screw, a second bearing seat, a first proximity switch and a second proximity switch. By adopting lower driving, the problem that the size of equipment is too large is effectively solved; and the problems that materials are left in the pump body and the piston of the air cylinder overshoots the quantity adjusting scales can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of piston pump related devices for baking, cake production, food and other industries needing piston filling, filling, specifically, a kind of lower drive and volume regulating device for piston pump. BACKGROUND

[0002] The piston pump generally adopts linear driving mode at present, and the volume regulating mode is divided into two kinds: one is hard positioning and mechanical air control valve volume regulating, and the other is soft positioning and magnetic air control valve. There are the following two disadvantages:

[0003] 1) The mechanical air control valve hard positioning and volume regulating effect are good and easy to control, but when a double-head air cylinder is used to control the pump piston and the other end is used to control the mechanical air control valve, the machine length is almost doubled, resulting in large equipment footprint, which increases the equipment manufacturing cost and also increases the factory cost for the user;

[0004] 2) The magnetic air control valve soft positioning has simple machine structure and small size, but the hard positioning of this structure can only rely on the two ends of the air cylinder as the machine origin, one is at the discharge position (front end of the air cylinder) and the other is at the suction position (rear end of the air cylinder). Both positions have fatal defects: (1) when starting filling at the discharge position, the material must be sucked first and then discharged, which reduces the working efficiency and also has the possibility of air cylinder piston colliding with the volume regulating magnetic switch, making it difficult for the machine to return to the original position and increasing the cost of structure and material waste. Although the efficiency is not affected at the suction position, there is also the disadvantage of air cylinder colliding with the volume regulating magnetic switch. The most fatal is that when filling, the material only reciprocates within the metering range, but at the position corresponding to the volume regulating magnetic switch from the front end of the air cylinder to the pump body, there is a long-term residual material that cannot be discharged, which is a challenge to material cost control and food hygiene. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a piston pump lower drive and volume regulating device for the field of food and chemical processing technology, which can solve the defects of the prior art. The drive mode adopts lower drive, effectively solving the problem of large equipment size. The volume regulating component adopts hard positioning, ensuring that only the material within the metering range is stored in the pump body, and there is no problem of residual material in the pump body. Since the volume regulating adopts hard positioning, there is no problem of air cylinder piston colliding with the volume regulating scale.

[0006] In order to achieve the above object, the utility model provides a lower drive and volume adjusting device for piston pump, wherein, the device contains frame, drive component, volume adjusting component, the frame is composed of frame main body, the upper part of frame for fixing piston pump which is arranged above frame main body, and the lower part of frame for fixing drive component and volume adjusting component which is arranged below frame main body, the upper part of frame is equipped with first support, second support, the lower part of frame is equipped with third support, fourth support, fifth support, sixth support, seventh support, eighth support, the drive component is composed of drive cylinder, slide rail, first sliding block, drive block, first clamping groove, first buckle, second buckle, second clamping groove, shaft sleeve, multistage flange, cylinder rod, material cylinder piston rod, material cylinder piston, the both ends of drive cylinder are fixed with frame main body through third support, fourth support respectively, slide rail is fixed through seventh support, material cylinder piston rod and material cylinder piston are fixed through first support, second support, the volume adjusting component is composed of volume adjusting handle, digital display meter, locking handle, first bearing seat, nut, second sliding block, buffer cap, volume adjusting pointer, lead screw, second bearing seat, first proximity switch, second proximity switch, volume adjusting component is fixed with frame main body through sixth support, seventh support, eighth support, lead screw and first bearing seat, second bearing seat which are arranged at the both ends of lead screw are fixed through fifth support, sixth support, the nut that is fixed with second sliding block is equipped on lead screw, the rear end of lead screw is connected with volume adjusting handle which is arranged at the rear end outside of frame main body through first bearing seat and sixth support, the material cylinder piston rod and cylinder rod are parallel to each planet of frame main body and are arranged along the length direction of frame main body, one end of cylinder rod is connected with drive cylinder, the other end is connected with drive block, drive block is fixed on first sliding block, first sliding block and second sliding block move along slide rail front and back respectively, the top of drive block passes through frame main body, and one end of material cylinder piston rod is connected with the upper part of frame, the other end of material cylinder piston rod passes through first support of the upper part of frame and is connected with material cylinder piston which is arranged in front of first support.

[0007] The first support and the second support of the lower drive and volume adjusting device for piston pump form a T-shaped structure and are connected by screws, and are fixed on the frame main body by screws, the first support and the eighth support below are locked by screws through the frame main body, the second support and the seventh support below are locked by screws through the frame main body, the remaining fixing positions of the seventh support are locked by screws with the frame main body, the sixth support, the seventh support and the eighth support form an inverted "up" shaped structure, the volume adjusting component is fixed by screws, and then is fixed with the frame main body by screws, the third support and the fourth support are locked by screws with the both ends of the drive cylinder, and then are fixed with the frame main body by screws, the other supports and the fixed components and the frame main body are also locked by screws.

[0008] The lower driving and volume adjusting device for piston pump, wherein the volume adjusting handle is provided with a digital display and a locking handle between the first bearing seat at the rear end of the screw rod, the screw rod is located below the driving block, the two ends of the screw rod are fixed through the first bearing seat and the second bearing seat respectively, and the first bearing seat and the second bearing seat are fixed on the fifth support and the sixth support respectively.

[0009] The lower driving and volume adjusting device for piston pump, wherein the screw rod drives the nut to move forward and backward when rotating, the volume adjusting pointer is fixed above the nut, the second proximity switch is fixed at the upper end of the volume adjusting pointer, the nut is fixed on the second sliding block, the second sliding block is fixed with a buffer cap at one end towards the driving cylinder, the second sliding block moves forward and backward on the slide rail through the adjustment of the volume adjusting handle; the slide rail and the screw rod are arranged in parallel and are in the same length direction as the cylinder piston rod and the cylinder rod; the screw rod is arranged outside the cylinder piston rod and the cylinder rod, and the slide rail is arranged inside the cylinder piston rod and the cylinder rod.

[0010] The lower driving and volume adjusting device for piston pump, wherein when adjusting, the digital display shows the current value of the volume adjusting measurement, the volume adjusting pointer indicates the measurement position, and after the measurement is adjusted, the locking handle is locked, the screw rod moves with the adjustment of the volume adjusting handle, and the digital display shows the measurement of the nut movement.

[0011] The lower driving and volume adjusting device for piston pump, wherein the cylinder rod is connected with the driving block at the rear end, the inner side of the driving block is fixed with the first sliding block, the first sliding block moves on the slide rail along the position between the second sliding block and the first support, the top of the driving block is provided with a first clamping groove, the rear end of the cylinder piston rod is provided with a first clamping buckle matched with the first clamping groove, so that the cylinder piston rod is clamped in the first clamping groove through the first clamping buckle, the cylinder rod drives the cylinder piston rod to move forward and backward, drives the cylinder piston connected with the front end of the cylinder piston rod to move, and makes the piston pump work; the cylinder of the piston pump and the driving cylinder connected with the front end of the cylinder rod are arranged above and below the main body of the machine base respectively, forming an upper and lower parallel structure.

[0012] The lower driving and volume adjusting device for piston pump, wherein the cylinder piston rod is provided with a second clamping buckle at the portion passing through the first support at the front end, the front end of the cylinder piston rod is provided with an internal thread, the rear end of the second clamping buckle is provided with an external thread, and the two are matched and connected and then tightened through a nut; the rear end of the cylinder piston is provided with a second clamping groove matched with the second clamping buckle, and the cylinder piston is connected with the second clamping buckle through the second clamping groove; a multi-stage flange is arranged in front of the first support on the cylinder piston rod, and a shaft sleeve is arranged behind the first support; the multi-stage flange and the shaft sleeve are respectively close to the front and rear surfaces of the first support; the multi-stage flange forms a stepped surface with different diameters to adapt to the installation and fixation of cylinders with different diameters.

[0013] The above-mentioned lower drive and quantity adjustment device for the piston pump, wherein the first bracket is provided with a first proximity switch below the sleeve on the rear surface and above the slide rail. The original state of the drive block is at the second proximity switch. The drive block presses the second proximity switch and remains on standby. When filling begins, the cylinder rod drives the cylinder piston rod to move toward the cylinder of the piston pump to discharge the material. When the discharge is completed, the drive block moves to the first bracket, presses the first proximity switch, and then drives the cylinder piston rod to move in the opposite direction to complete the suction and return to the standby position. When filling continues, the cylinder piston rod performs a reciprocating cycle. During the reciprocating motion, the impact force between the drive block and the nut is absorbed by the buffer cap.

[0014] The above-mentioned lower drive and adjustment device for the piston pump, wherein the reciprocating stroke of the drive block determines the metering of the piston pump, the reciprocating stroke of the drive block is determined by the position of the nut, the position of the nut is adjusted by the adjustment handle, and the digital display and the adjustment pointer indicate the adjustment amount of the adjustment handle.

[0015] The above-mentioned lower drive and quantity adjustment device for the piston pump, wherein the base body is a trough-shaped structure with a closed front end and an open rear end, and the rear end of the base body is fixed to the sixth bracket; the base body is provided with a rectangular flat plate, and three baffles of the same height extending downward along the two sides of the long side of the rectangle and the short side of the front end; the first bracket is vertically installed on the upper surface of the rectangular flat plate, and divides the rectangular flat plate into two parts, front and rear, along the length direction; the piston pump cylinder is placed on the rectangular flat plate in front of the first bracket; the rectangular flat plate behind the first bracket is provided with a hollow slide groove for moving the drive block.

[0016] The lower drive and quantity adjustment device for a piston pump provided by the utility model has the following advantages:

[0017] The improvements to this device include: 1) the length of the machine is reduced by nearly half, the manufacturing cost is greatly reduced, and the floor space occupied is greatly reduced; 2) no material remains in the piston pump cylinder during each filling; 3) due to the hard positioning of the adjusting nut, the equipment does not need to add a reset device, and there is no possibility of the cylinder rod rushing through the adjusting stroke; 4) each time filling is completed, the material is sucked in first and then the machine is put into standby mode, which greatly improves production efficiency; 5) semi-automatic and fully automatic functions are optional; 6) the device can be installed on the lifting mechanism through the machine base; 7) the standby switch of the device can also be installed on the handheld mobile nozzle for filling or stuffing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an overall schematic diagram of the lower drive and quantity adjustment device for a piston pump of the present utility model.

[0019] Figure 2 This is a schematic diagram of the upper part of the base of the lower drive and volume adjustment device for the piston pump of the present invention.

[0020] Figure 3 This is a schematic diagram of the lower part of the base of the lower drive and volume adjustment device for the piston pump of the present invention.

[0021] Figure 4 This is a schematic diagram of the driving components of the lower drive and volume adjustment device for the piston pump of the utility model.

[0022] Figure 5 This is a schematic diagram of the volume adjustment component of the lower drive and volume adjustment device for the piston pump of the utility model.

[0023] Among them: 1. Machine base; 11. Upper part of machine base; 111. First bracket; 112. Second bracket; 12. Lower part of machine base; 121. Third bracket; 122. Fourth bracket; 123. Fifth bracket; 124. Sixth bracket; 125. Seventh bracket; 126. Eighth bracket; 13. Machine base body; 2. Driving component; 21. Driving cylinder; 22. Slide rail; 23. First slider; 24. Driving block; 25. First slot; 26. First buckle; 27. Second clip; 28. Second slot; 29. ​​Bushing; 210. Multi-stage flange; 211. Cylinder rod; 212. Cylinder piston rod; 213. Cylinder piston; 3. Adjustment component; 31. Adjustment handle; 32. Digital display; 33. Locking handle; 34. First bearing seat; 35. Nut; 36. Second slider; 37. Buffer cap; 38. Adjustment pointer; 39. Lead screw; 310. Second bearing seat; 311. First proximity switch; 312. Second proximity switch. DETAILED DESCRIPTION

[0024] The specific implementation of the present invention will be further described below with reference to the accompanying drawings.

[0025] The utility model provides a lower drive and volume adjustment device for a piston pump, which comprises a base 1, a drive component 2, and a volume adjustment component 3. Figure 1 shown.

[0026] Preferably, the base 1 is composed of a base body 13, a base upper portion 11 disposed above the base body 13 for fixing the piston pump, and a base lower portion 12 disposed below the base body 13 for fixing the driving component 2 and the volume adjustment component 3; the base upper portion 11 is provided with a first bracket 111 and a second bracket 112, and the base lower portion 12 is provided with a third bracket 121, a fourth bracket 122, a fifth bracket 123, a sixth bracket 124, a seventh bracket 125, and an eighth bracket 126. Figure 2 and Figure 3 shown.

[0027] The driving component 2 consists of a driving cylinder 21, a slide rail 22, a first slider 23, a driving block 24, a first slot 25, a first buckle 26, a second buckle 27, a second slot 28, a sleeve 29, a multi-stage flange 210, a cylinder rod 211, a cylinder piston rod 212, and a cylinder piston 213. The two ends of the driving cylinder 21 are fixed to the machine base 13 by the third bracket 121 and the fourth bracket 122 respectively; the slide rail 22 is fixed by the seventh bracket 125; the cylinder piston rod 212 and the cylinder piston 213 are fixed by the first bracket 111 and the second bracket 112. Figure 4 shown.

[0028] The adjustment component 3 consists of an adjustment handle 31, a digital display 32, a locking handle 33, a first bearing seat 34, a nut 35, a second slider 36, a buffer cap 37, an adjustment pointer 38, a lead screw 39, a second bearing seat 310, a first proximity switch 311, and a second proximity switch 312. The adjustment component 3 is fixed to the machine base 13 via the sixth bracket 124, the seventh bracket 125, and the eighth bracket 126. The lead screw 39 is fixed to the first bearing seat 34 and the second bearing seat 310 at both ends of the lead screw 39 via the fifth bracket 123 and the sixth bracket 124. The lead screw 39 is equipped with a nut 35 fixed to the second slider 36. The rear end of the lead screw 39 is connected to the adjustment handle 31 located on the rear end of the machine base 13 via the first bearing seat 34 and the sixth bracket 124. Figure 5 shown.

[0029] The cylinder piston rod 212 is connected in parallel with the cylinder rod 211 up and down, respectively parallel to the plane of the machine base body 13, and arranged along the length direction of the machine base body 13; one end of the cylinder rod 211 is connected to the driving cylinder 21, and the other end is connected to the driving block 24; the driving block 24 is fixed on the first slider 23, and the first slider 23 and the second slider 36 move forward and backward along the slide rail 22 respectively; the top of the driving block 24 passes through the machine base body 13, and is connected to one end of the cylinder piston rod 212 at the machine base upper part 11, and the other end of the cylinder piston rod 212 passes through the first bracket 111 of the machine base upper part 11, and is connected to the cylinder piston 213 arranged in front of the first bracket 111.

[0030] The first bracket 111 and the second bracket 112 form a T-shaped structure and are connected by screws and fixed above the base body 13 by screws; the first bracket 111 is locked with the eighth bracket 126 below through the base body 13 by screws; the second bracket 112 is locked with the seventh bracket 125 below through the base body 13 by screws, and the remaining fixed position of the seventh bracket 125 is screwed to the base body 13; the sixth bracket 124, the seventh bracket 125, and the eighth bracket 126 form an inverted "up" structure, which is fixed with screws to the adjusting component 3 and then fixed with screws to the base body 13; the third bracket 121 and the fourth bracket 122 are respectively screwed with the two ends of the driving cylinder 21 and then fixed with screws to the base body 13; the other brackets are also screwed to the fixed components and the base body 13.

[0031] A digital display 32 and a locking handle 33 are provided between the adjustment handle 31 and the first bearing seat 34 at the rear end of the screw 39. The screw 39 is located below the drive block 24. The two ends of the screw 39 are fixed by the first bearing seat 34 and the second bearing seat 310 respectively. The first bearing seat 34 and the second bearing seat 310 are respectively fixed on the fifth bracket 123 and the sixth bracket 124.

[0032] When the lead screw 39 rotates, it drives the nut 35 to move back and forth. The adjustment pointer 38 is fixed above the nut 35. The second proximity switch 312 is fixed to the upper right end of the adjustment pointer 38. The nut 35 is fixed on the second slider 36. The second slider 36 is fixed with a buffer cap 37 on one end facing the driving cylinder 21. The second slider 36 moves back and forth on the slide rail 22 through the adjustment of the adjustment handle 31; the slide rail 22 and the lead screw 39 are arranged in parallel and have the same length direction as the cylinder piston rod 212 and the cylinder rod 211; the lead screw 39 is arranged on the outside (left side) of the cylinder piston rod 212 and the cylinder rod 211, and the slide rail 22 is arranged on the inside (right side) of the cylinder piston rod 212 and the cylinder rod 211.

[0033] When the adjusting handle 31 is adjusted, the digital display 32 displays the current value of the adjusting measurement, and the adjusting pointer 38 indicates the measurement position. After the measurement is adjusted, it is locked by the locking handle 33. The screw 39 moves with the adjustment of the adjusting handle 31, and the digital display 32 displays the measurement of the movement of the nut 35.

[0034] The rear end of the cylinder rod 211 is connected to the drive block 24. The inner side (right side) of the drive block 24 is fixed to the first slider 23. The first slider 23 moves on the slide rail 22 along the position between the second slider 36 and the first bracket 111. A first slot 25 is provided on the top of the drive block 24. The rear end of the cylinder piston rod 212 is provided with a first clip 26 that cooperates with the first slot 25. The cylinder piston rod 212 is clamped in the first slot 25 via the first clip 26. The cylinder rod 211 drives the cylinder piston rod 212 to move back and forth, driving the cylinder piston 213 connected to the front end of the cylinder piston rod 212, causing the piston pump to operate. The piston pump's cylinder and the drive cylinder 21 connected to the front end of the cylinder rod 211 are respectively arranged above and below the base body 13, forming a parallel structure. The piston pump's cylinder and drive cylinder 21 are located in the front of the base body 13.

[0035] The front end of the cylinder piston rod 212 is provided with a second clip 27 in the part passing through the first bracket 111, the front end of the cylinder piston rod 212 is provided with an internal thread, and the rear end of the second clip 27 is provided with an external thread, and the two are matched and connected and then tightened by a nut; the rear end of the cylinder piston 213 is provided with a second groove 28 that matches the second clip 27, and the cylinder piston 213 is connected to the second clip 27 through the second groove 28; the cylinder piston rod 212 is provided with a multi-stage flange 210 in front of the first bracket 111, and a shaft sleeve 29 is provided behind the first bracket 111; the multi-stage flange 210 and the shaft sleeve 29 are respectively tightly attached to the front and rear surfaces of the first bracket 111; the multi-stage flange 210 forms step surfaces with different diameters to adapt to cylinders of different diameters for installation and fixation.

[0036] The first bracket 111 is provided with a first proximity switch 311 below the sleeve 29 on the rear surface and above the slide rail 22. The original state of the drive block 24 is at the second proximity switch 312. The drive block 24 presses the second proximity switch 312 and remains on standby. When filling starts, the cylinder rod 211 drives the cylinder piston rod 212 to move toward the cylinder of the piston pump to discharge the material. When the discharge is completed, the drive block 24 moves to the first bracket 111, presses the first proximity switch 311, and then drives the cylinder piston rod 212 to move in the opposite direction to complete the suction and return to the standby position. When filling continues, the cylinder piston rod 212 moves toward the cylinder of the piston pump again, and continues to perform reciprocating cycle motion. During the reciprocating motion, the impact force between the drive block 24 and the nut 35 is absorbed by the buffer cap 37.

[0037] The reciprocating stroke of the driving block 24 determines the metering of the piston pump. The reciprocating stroke of the driving block 24 is determined by the position of the nut 35. The position of the nut 35 is adjusted by the adjustment handle 31. The digital display 32 and the adjustment pointer 38 indicate the adjustment amount of the adjustment handle 31.

[0038] The machine base body 13 is a trough-shaped structure with a closed front end and an open rear end. The rear end of the machine base body 13 is fixed to the sixth bracket 124, and the first bearing seat 34 is fixed on the sixth bracket 124. The digital display 32 and the locking handle 33 are located outside the rear end of the machine base body 13, and the adjustment handle 31 is located at the outermost part of the rear end of the machine base body 13; the machine base body 13 is provided with a rectangular flat plate and three baffles of the same height extending downward along the two sides of the rectangular long side and the front short side; the bottom of the baffles on the two long sides are also provided with two short edges extending toward the inner side of the machine base body 13 and parallel to the plane where the rectangular flat plate is located. The length of the long side of the rectangle is greater than the length of the short edge, and the part of the long side of the rectangle near the rear end opening of the machine base body 13 is not provided with a short edge; the first bracket 111 is vertically installed on the upper surface of the rectangular flat plate and divides the rectangular flat plate into two parts in the longitudinal direction; the piston pump cylinder is placed on the rectangular flat plate in front of the first bracket 111; the rectangular flat plate behind the first bracket 111 is provided with a hollow slide groove for moving the drive block 24.

[0039] The following is a further description of the lower drive and quantity adjustment device for a piston pump provided by the present invention in conjunction with the embodiments.

[0040] Example 1

[0041] The invention discloses a lower driving and volume regulating device for a piston pump. The device is divided into three parts: a machine base 1, a driving component 2, and a volume regulating component 3.

[0042] The base 1 is composed of a base upper portion 11, a base lower portion 12 and a base body 13. The base upper portion 11 is mainly used to fix the piston pump, and the base lower portion 12 is mainly used to fix the driving components and the amount adjustment components.

[0043] The upper portion 11 of the machine base is provided with a first bracket 111 and a second bracket 112. The lower portion 12 of the machine base is provided with a third bracket 121, a fourth bracket 122, a fifth bracket 123, a sixth bracket 124, a seventh bracket 125, and an eighth bracket 126. The first bracket 111 and the second bracket 112 are connected by T-screws and then fixed to the upper portion of the machine base 1. The first bracket 111 is screwed to the eighth bracket 126 below it, separating the machine base 1. The second bracket 112 is screwed to the seventh bracket 125 below it, separating the machine base 1. The remaining fixed portions of the seventh bracket 125 are screwed to the machine base 1.

[0044] The driving component 2 is composed of a driving cylinder 21, a slide rail 22, a first slider 23, a driving block 24, a first slot 25, a first buckle 26, a second buckle 27, a second slot 28, a sleeve 29, a multi-stage flange 210, a cylinder rod 211, a cylinder piston rod 212, a cylinder piston 213, etc.

[0045] The adjustment component 3 consists of an adjustment handle 31, a digital display 32, a locking handle 33, a first bearing seat 34, a nut 35, a second slider 36, a buffer cap 37, an adjustment pointer 38, a screw 39, a second bearing seat 310, a first proximity switch 311, a second proximity switch 312, etc.

[0046] The adjustment unit 3 is secured by screws to the inverted "up"-shaped structure consisting of the sixth bracket 124, the seventh bracket 125, and the eighth bracket 126, which are then screwed to the machine base 1. The seventh bracket 125 secures the slide rail 22. The third and fourth brackets 121 and 122 are screwed to the ends of the drive cylinder 21, respectively, and then to the machine base 1. The fifth and sixth brackets 123 and 124 secure the adjustment screw bearing.

[0047] Example 2

[0048] A lower drive and volume adjustment device for a piston pump, the working principle of which is as follows:

[0049] Adjust the adjustment handle 31, the digital display 32 displays the current value of the adjustment measurement, and the adjustment pointer 38 preliminarily indicates the measurement position. After the measurement is adjusted, it is locked by the locking handle 33. The screw 39 is fixed to the second bearing seat 310 through the first bearing seat 34. The first bearing seat 34 and the second bearing seat 310 are respectively fixed on the fifth bracket 123 and the sixth bracket 124. The nut 35 moves back and forth through the rotation of the screw 39. The screw 39 moves with the adjustment of the adjustment handle 31. At the same time, the digital display 32 displays the measurement of the movement of the nut 35. The adjustment pointer 38 is fixed above the nut 35. The second proximity switch 312 is fixed to the upper right end of the adjustment pointer 38. The nut 35 is fixed on the second slider 36. The buffer cap 37 is fixed at the front end of the second slider 36. The second slider 36 is adjusted to move back and forth on the slide rail 22 by the adjustment handle 31.

[0050] The cylinder rod 211 is connected to the front end of the driving block 24, and the driving block 24 is fixed on the first slider 23. There is a first slot 25 above the driving block 24. The first buckle 26 of the cylinder piston rod 212 is stuck in the first slot 25. The cylinder rod 211 drives the cylinder piston rod 212 to move back and forth to make the piston pump work.

[0051] The metering of the piston pump is determined by the reciprocating stroke of the drive block 24, the reciprocating stroke of the drive block 24 is determined by the position of the nut 35, the position of the nut 35 is adjusted by the adjustment handle 31, the adjustment amount of the adjustment handle 31 is indicated by the digital display 32 and the adjustment pointer 38, and the reciprocating motion impulse of the drive block 24 is buffered by the punch cap 37.

[0052] The first proximity switch 311 is screwed to the top of the base body 13, close to the rear side of the first bracket 111. The original state (origin) of the drive block 24 is at the second proximity switch 312. The drive block 24 presses the rear second proximity switch 312 and stands by. When a filling command is issued, the cylinder rod 211 drives the cylinder piston rod 212 to move forward to complete the discharge (the first action is exhaust). When the discharge is completed, the front end of the drive block 24 presses the first proximity switch 311, thereby instructing the drive block 24 to drive the cylinder piston rod 212 to retreat and complete the intake and stand by. If a filling command is issued at this time, the cylinder piston rod 212 moves forward, completes the discharge, and then takes in the material again and stands by. This reciprocating cycle repeats. During the reciprocating motion, the impact force between the drive block 24 and the adjusting screw nut 35 is buffered and absorbed by the buffer cap 37. The piston pump cylinder is located in the front direction of the base 1.

[0053] The cylinder piston 213 is connected to the second clip 27 through the second slot 28. When you finish work, you can clean the cylinder piston 213. The rear end of the second clip 27 has an external thread, and the front end of the cylinder piston rod 212 has an internal thread. After connecting them, tighten the nut. When repairing, the first clip 26 of the cylinder piston rod 212 can be pulled out of the first slot 25.

[0054] When the piston pump needs to increase or decrease its range, the diameter of the cylinder can be changed. The multi-stage flange 210 is made into steps with different diameters to facilitate the replacement of cylinders with different diameters.

[0055] If the machine needs to be filled continuously and fully automatically, just short-circuit the standby signal and the machine can continue to fill reciprocally.

[0056] The utility model provides a lower drive and volume adjustment device for a piston pump, which can solve the following problems: 1) To ensure that no material remains in the piston pump cavity during the filling process, the drive adopts a double-headed cylinder, one end of which is connected to the piston and inserted into the piston pump cavity, and the other end is equipped with a hard positioning device for volume adjustment. This effectively solves the problem of material residue in the cavity, but it also increases the length of the machine by nearly half, which is a fatal drawback. 2) When the drive adopts a single-headed cylinder, the cylinder piston's original position can be selected at the front or rear end of the cylinder. Regardless of the front or rear end, there are fatal drawbacks: although there is no material residue in the piston pump cavity during the filling process when the cylinder is driven, each filling must first suck in the material and then discharge the material, which increases the working time by nearly double. When the cylinder is driven at the rear end, the cavity first sucks in the entire cavity material and waits for the filling signal. During filling, only the required amount is discharged, which causes a large amount of material to remain in the cavity. Over time, this material is easily deteriorated and wastes the material during the scheduled discharge. Another drawback is that the cylinder piston may, for some reason, rush through the volume adjustment magnetic switch, causing the machine to fail to start. Therefore, adding an additional reset structure increases the cost and does not solve the problem of material residue or low working efficiency. The device of the utility model has made comprehensive technical improvement design to solve the above problems. It adopts two cylinders with equivalent piston rod lengths and the piston pump cylinder (cavity) to be installed in parallel up and down. Then the tops of the two piston rods are connected together by a connecting block to complete the suction and discharge of the piston pump cylinder. The metering block is set by moving the screw.

[0057] The device of the present invention is divided into three parts: a machine base, a driving component, and a metering component (amount adjustment component). A metering piston pump is fixed to the front upper part of the machine base, a driving cylinder is fixed to the front lower part, and a metering component is fixed to the rear lower part. The core innovations of this device are: 1) the piston pump cylinder and the driving cylinder are connected in parallel up and down; 2) the cylinder piston rod and the cylinder piston rod are connected by a snap-fit ​​connection for quick disassembly and installation; 3) the cylinder piston and the piston rod are connected by a snap-fit ​​connection for quick disassembly and installation; 4) the amount adjustment nut and the driving block are slide rail structures respectively installed on two independent sliders; 5) the amount adjustment digital display and pointer structure; 6) the amount adjustment locking structure avoids the reduction of filling accuracy caused by the free movement of the amount adjustment handle due to the precision of the screw component; 7) the appearance is beautiful and the structure is simple.

[0058] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as limiting the present invention. After reading the above description, various modifications and alternatives to the present invention will be readily apparent to those skilled in the art. Therefore, the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. A lower drive and volume adjustment device for a piston pump, characterized in that: The device comprises a base, a driving component, and a quantity adjustment component; The base is composed of a base body, an upper base portion provided above the base body for fixing the piston pump, and a lower base portion provided below the base body for fixing the driving component and the amount adjustment component; the upper base portion is provided with a first bracket and a second bracket, and the lower base portion is provided with a third bracket, a fourth bracket, a fifth bracket, a sixth bracket, a seventh bracket, and an eighth bracket; The driving component is composed of a driving cylinder, a slide rail, a first slider, a driving block, a first slot, a first buckle, a second buckle, a second slot, a sleeve, a multi-stage flange, a cylinder rod, a cylinder piston rod, and a cylinder piston; the two ends of the driving cylinder are respectively fixed to the machine base through the third bracket and the fourth bracket; the slide rail is fixed through the seventh bracket; the cylinder piston rod and the cylinder piston are fixed through the first bracket and the second bracket; The amount adjustment component is composed of an amount adjustment handle, a digital display, a locking handle, a first bearing seat, a nut, a second slider, a buffer cap, an amount adjustment pointer, a lead screw, a second bearing seat, a first proximity switch, and a second proximity switch; the amount adjustment component is fixed to the machine base body through the sixth bracket, the seventh bracket, and the eighth bracket; the lead screw is fixed to the first bearing seat and the second bearing seat provided at both ends of the lead screw through the fifth bracket and the sixth bracket; the lead screw is provided with a nut fixed to the second slider, and the rear end of the lead screw is connected to the amount adjustment handle provided on the outside of the rear end of the machine base body through the first bearing seat and the sixth bracket; The cylinder piston rod and the cylinder rod are connected in parallel up and down, respectively parallel to the plane of the machine base body, and are arranged along the length direction of the machine base body; one end of the cylinder rod is connected to the driving cylinder, and the other end is connected to the driving block; the driving block is fixed on the first slider, and the first slider and the second slider move forward and backward along the slide rail respectively; the top of the driving block passes through the machine base body, and is connected to one end of the cylinder piston rod at the upper part of the machine base, and the other end of the cylinder piston rod passes through the first bracket on the upper part of the machine base, and is connected to the cylinder piston arranged in front of the first bracket.

2. The lower driving and regulating device for a piston pump according to claim 1, characterized in that: The first bracket and the second bracket form a T-shaped structure and are connected by screws and are fixed above the machine base body by screws; the first bracket is locked with the eighth bracket below through the machine base body by screws; the second bracket is locked with the seventh bracket below through the machine base body by screws, and the remaining fixed position of the seventh bracket is locked with the machine base body screws; the sixth bracket, the seventh bracket, and the eighth bracket form an inverted "up" shaped structure, the adjusting component is fixed with screws, and then fixed with the machine base body screws; the third bracket and the fourth bracket are respectively locked with screws at both ends of the driving cylinder, and then fixed with screws to the machine base body; the other brackets are also locked with the fixed components and the machine base body by screws.

3. The lower driving and regulating device for a piston pump according to claim 1, characterized in that: The adjustment handle is provided with a digital display and a locking handle between the first bearing seat at the rear end of the screw. The screw is located below the drive block. The two ends of the screw are fixed by the first bearing seat and the second bearing seat respectively. The first bearing seat and the second bearing seat are fixed on the fifth bracket and the sixth bracket respectively.

4. The lower driving and regulating device for a piston pump according to claim 3, characterized in that: The lead screw drives the nut to move back and forth when it rotates, the adjustment pointer is fixed above the nut, the second proximity switch is fixed to the upper end of the adjustment pointer, the nut is fixed on the second slider, and a buffer cap is fixed to the end of the second slider facing the driving cylinder. The second slider moves back and forth on the slide rail through the adjustment of the adjustment handle; the slide rail and the lead screw are arranged in parallel and have the same length direction as the cylinder piston rod and the cylinder rod; the lead screw is arranged on the outside of the cylinder piston rod and the cylinder rod, and the slide rail is arranged on the inside of the cylinder piston rod and the cylinder rod.

5. The lower driving and regulating device for a piston pump according to claim 4, characterized in that: When the adjusting handle is adjusted, the digital display shows the current value of the adjusting measurement, and the adjusting pointer indicates the measurement position. After the measurement is adjusted, it is locked by the locking handle. The screw moves with the adjustment of the adjusting handle, and the digital display shows the measurement of the nut movement.

6. The lower driving and regulating device for a piston pump according to claim 1, characterized in that: The rear end of the cylinder rod is connected to the driving block, the inner side of the driving block is fixed to the first slider, the first slider moves on the slide rail along the position between the second slider and the first bracket, a first slot is provided on the top of the driving block, and the rear end of the cylinder piston rod is provided with a first buckle matching the first slot, so that the cylinder piston rod is clamped in the first slot through the first buckle, and the cylinder rod drives the cylinder piston rod to move back and forth, driving the cylinder piston connected to the front end of the cylinder piston rod to make the piston pump work; the piston of the piston pump and the driving cylinder connected to the front end of the cylinder rod are respectively arranged above and below the machine base body, forming an upper and lower parallel structure.

7. The lower driving and regulating device for a piston pump according to claim 6, characterized in that: The cylinder piston rod is provided with a second clip at the front end of the part passing through the first bracket, the front end of the cylinder piston rod is provided with an internal thread, and the rear end of the second clip is provided with an external thread, and the two are matched and connected and then tightened by a nut; the rear end of the cylinder piston is provided with a second groove that matches the second clip, and the cylinder piston is connected to the second clip through the second groove; the cylinder piston rod is provided with a multi-stage flange in front of the first bracket, and a shaft sleeve is provided behind the first bracket; the multi-stage flange and the shaft sleeve are respectively tightly attached to the front and rear surfaces of the first bracket; the multi-stage flange forms step surfaces with different diameters to adapt to cylinders of different diameters for installation and fixation.

8. The lower driving and regulating device for a piston pump according to claim 7, characterized in that: The first bracket is provided with a first proximity switch below the sleeve on the rear surface and above the slide rail. The original state of the drive block is at the second proximity switch. The drive block presses the second proximity switch and remains on standby. When filling starts, the cylinder rod drives the cylinder piston rod to move toward the cylinder direction of the piston pump to discharge the material. When the discharge is completed, the drive block moves to the first bracket, presses the first proximity switch, and then drives the cylinder piston rod to move in the opposite direction to complete the suction and return to the standby position. When filling continues, the cylinder piston rod performs a reciprocating cycle. During the reciprocating motion, the impact force between the drive block and the nut is absorbed by the buffer cap.

9. The lower driving and regulating device for a piston pump according to claim 8, characterized in that: The reciprocating stroke of the driving block determines the metering of the piston pump. The reciprocating stroke of the driving block is determined by the position of the nut. The position of the nut is adjusted by the adjustment handle. The digital display and the adjustment pointer indicate the adjustment amount of the adjustment handle.

10. The lower driving and regulating device for a piston pump according to claim 1, characterized in that: The base body is a trough-shaped structure with a closed front end and an open rear end, and the rear end of the base body is fixed to the sixth bracket; the base body is provided with a rectangular flat plate, and three baffles of the same height extending downward along the two sides of the long side of the rectangle and the short side of the front end; the first bracket is vertically installed on the upper surface of the rectangular flat plate, and divides the rectangular flat plate into two parts, front and back, along the length direction; the cylinder of the piston pump is placed on the rectangular flat plate in front of the first bracket; the rectangular flat plate behind the first bracket is provided with a hollow slide groove for driving the block to move.

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