Filling pump

Abstract

The filling pump is used to solve the technical problem of small flow rate adjustment range in the process of fluid delivery in the prior art pump. It includes a pump body, which is provided with a liquid inlet channel, a liquid storage chamber and a liquid outlet channel in sequence according to the liquid flow direction, and a blocking ball is provided in the liquid inlet channel and the liquid outlet channel, and the blocking ball can slide along the liquid inlet channel or the liquid outlet channel to block the liquid inlet of the liquid inlet channel or the liquid inlet of the liquid outlet channel; a connecting ring, a mounting chamber is opened in the pump body, and a connecting ring is arranged in the mounting chamber, and the connecting ring is fixedly connected to a piston rod, and the piston rod is inserted in the liquid storage chamber, and the piston rod is sealed and connected to the inner wall of the liquid storage chamber in the circumferential direction of the rod section close to the mounting chamber, and the piston rod is fixedly connected to the outer wall of the connecting ring; a driving component, which is arranged on the pump body and abuts against the inner wall of the connecting ring; an adjusting component, which is arranged on the pump body and connected to the driving component. The present invention has a large adjustment range and is mainly used for conveying fluids.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical pumps, in particular to a filling pump. Background Art

[0002] A pump is a power device used to extract and transport fluids. Therefore, pumps are often used in situations where fluids need to be transported. The flow rate and flow rate of the fluid can be adjusted by the pump. A rotating shaft is generally provided in the pump. By changing the rotation speed of the rotating shaft, the pump's delivery rate of the fluid can be adjusted.

[0003] However, the above-mentioned existing pump method of adjusting the liquid flow by adjusting the shaft speed still has an objective defect. Since the shaft speed on the pump is generally only set to a few adjustment gears, the pump in the prior art only has a few delivery rates for fluid delivery, and the adjustment range of adjusting the fluid delivery rate is relatively small. Summary of the invention

[0004] The purpose of the present invention is to propose a filling pump to address the deficiencies of the prior art, so as to solve the technical problem mentioned in the background art that the pump in the prior art has a small flow rate adjustment range during fluid transportation.

[0005] Filling pump, including:

[0006] A pump body, on which a liquid inlet channel, a liquid storage cavity and a liquid outlet channel are arranged in sequence according to the liquid flow direction, and a blocking ball is arranged in each of the liquid inlet channel and the liquid outlet channel, and the blocking ball can slide along the liquid inlet channel or the liquid outlet channel to block the liquid inlet of the liquid inlet channel or the liquid inlet of the liquid outlet channel;

[0007] A connecting ring, wherein a mounting cavity is formed in the pump body, wherein the connecting ring is disposed in the mounting cavity, wherein the connecting ring is fixedly connected to a piston rod, wherein the piston rod is passed through the liquid storage cavity, wherein the piston rod is sealedly connected to the inner wall of the liquid storage cavity in the circumferential direction of the rod section close to the mounting cavity, and wherein the piston rod is fixedly connected to the outer wall of the connecting ring;

[0008] A driving assembly is arranged on the pump body and abuts against the inner wall of the connecting ring to drive the connecting ring to move, thereby causing the connecting ring to drive the piston rod to slide back and forth in the liquid storage chamber;

[0009] The adjusting component is arranged on the pump body and connected with the driving component, so as to continuously adjust the driving component and thus make the driving component continuously change the moving stroke of the connecting ring.

[0010] Working principle:

[0011] The fluid flows from the liquid inlet channel into the liquid storage chamber, then flows from the liquid storage chamber to the liquid outlet channel, and finally flows out from the liquid outlet channel.

[0012] The driving assembly drives the connecting ring to slide, and then the connecting ring drives the piston rod to slide in the liquid storage chamber, at which time a negative pressure cavity is formed in the liquid storage chamber, and then the external fluid pushes open the blocking ball used to block the liquid inlet of the liquid inlet channel, and then the fluid enters the liquid inlet channel and enters the liquid storage chamber;

[0013] Afterwards, the driving assembly drives the connecting ring to slide in the opposite direction, and then the connecting ring drives the piston rod to slide in the opposite direction synchronously. At this time, the piston rod will push the fluid in the liquid storage chamber during the return stroke, and then the fluid in the liquid storage chamber will push open the sealing ball used to seal the liquid inlet of the liquid outlet channel, so that the fluid flows from the liquid storage chamber into the liquid outlet channel and is discharged from the liquid outlet channel. At the same time, during the sliding return stroke of the piston rod, the fluid in the liquid storage chamber will also push the sealing ball in the liquid inlet channel, so that the sealing ball in the liquid inlet channel slides in the liquid inlet channel and seals the liquid inlet of the liquid inlet channel, thereby completing the fluid delivery process.

[0014] When it is necessary to adjust the flow rate of the fluid, the operator can use the adjustment component to adjust the drive component, thereby allowing the drive component to change the distance of the connecting ring stroke, and then allowing the connecting ring to synchronously change the stroke of the piston rod. When the stroke of the piston rod changes, the size of the negative pressure cavity formed in the liquid storage chamber will also change accordingly, and then the fluid flow rate of the fluid entering the liquid storage chamber will change, thereby achieving the effect of regulating the fluid flow rate. When the drive component is continuously adjusted, the drive component can also continuously change the moving stroke of the connecting ring, and then can continuously change the size of the negative pressure cavity that can be formed in the liquid storage chamber, thereby achieving the effect of continuously regulating the fluid flow rate.

[0015] The beneficial effects of the present invention are:

[0016] In the present invention, the operator can use the adjustment component to adjust the drive component, thereby allowing the drive component to change the distance of the connecting ring stroke, and then allowing the connecting ring to synchronously change the stroke of the piston rod. When the stroke of the piston rod changes, the size of the negative pressure cavity formed in the liquid storage chamber will also change accordingly, and then the fluid flow rate of the fluid entering the liquid storage chamber will change, thereby achieving the effect of regulating the fluid flow rate. When the drive component is continuously adjusted, the drive component can also continuously change the moving stroke of the connecting ring, and then can continuously change the size of the negative pressure cavity that the liquid storage chamber can travel, thereby achieving the effect of continuously regulating the fluid flow rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A longitudinal cross-sectional schematic diagram of an embodiment of the present invention;

[0018] Figure 2 is a transverse cross-sectional schematic diagram of an embodiment of the present invention;

[0019] Figure 3 for Figure 1 Schematic diagram of the structure enlarged at point A in the middle.

[0020] Explanation of the accompanying drawings: pump body 1, liquid inlet channel 2, liquid storage chamber 3, liquid outlet channel 4, sealing ball 5, connecting ring 6, mounting chamber 7, piston rod 8, rotating cylinder 9, eccentric ring 10, penetration rod 11, driving member 12, connecting block 13, shaft pin 14, strip hole 15, penetration hole 16, rotating handle 17, first bearing 18, second bearing 19, connecting hole 20, push plate 21, ball 22, gear 23, rotating shaft 24, sliding column 25, elastic member 26, eccentric wheel 27, mounting hole 28, connecting rod 29, third bearing 30, fourth bearing 31. DETAILED DESCRIPTION

[0021] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0022] like Figure 1 and Figure 2 As shown, the filling pump comprises:

[0023] A pump body 1 is provided with a liquid inlet channel 2, a liquid storage chamber 3 and a liquid outlet channel 4 in sequence according to the liquid flow direction. A sealing ball 5 is provided in the liquid inlet channel 2 and the liquid outlet channel 4. The sealing ball 5 can slide along the liquid inlet channel 2 or the liquid outlet channel 4 to block the liquid inlet of the liquid inlet channel 2 or the liquid inlet of the liquid outlet channel 4.

[0024] A connecting ring 6 is provided with an installation cavity 7 in the pump body 1, and the connecting ring 6 is arranged in the installation cavity 7. The connecting ring 6 is fixedly connected to a piston rod 8, and the piston rod 8 is penetrated in the liquid storage cavity 3. A push plate 21 is fixed circumferentially on the rod section of the piston rod 8 close to the installation cavity 7. The push plate 21 is sealed and connected to the inner wall of the liquid storage cavity 3 in the circumferential direction, and the piston rod 8 is fixedly connected to the outer wall of the connecting ring 6.

[0025] The driving assembly is arranged on the pump body 1 and abuts against the inner wall of the connecting ring 6 to drive the connecting ring 6 to move, thereby causing the connecting ring 6 to drive the piston rod 8 to slide back and forth in the liquid storage chamber 3 .

[0026] The adjusting component is arranged on the pump body 1 and connected to the driving component, so as to continuously adjust the driving component so as to make the driving component continuously change the moving stroke of the connecting ring 6 .

[0027] like Figure 1 and Figure 2As shown, the driving assembly includes a rotating drum 9 and an eccentric ring 10 which are inserted into the pump body 1. One end of the rotating drum 9 extends out of the pump body 1, and the other end of the rotating drum 9 is inserted into the center hole of the connecting ring 6. The eccentric ring 10 is arranged on the outside of the rotating drum 9, and the eccentric ring 10 abuts against the inner wall of the connecting ring 6. The eccentric ring 10 is used to push the connecting ring 6 as the rotating drum 9 rotates, thereby moving the connecting ring 6. The present invention can drive the rotating drum 9 to rotate by a motor, and then the rotating drum 9 drives the eccentric ring 10 to rotate. During the rotation process, the eccentric ring 10 will continue to push the connecting ring 6 to slide back and forth in a regular reciprocating manner, thereby causing the connecting ring 6 to drive the piston rod 8 to slide back and forth. This arrangement method has a simple structure and a stable working process.

[0028] like Figure 1 As shown, the adjustment assembly includes a penetration rod 11, a driving member 12, a connecting block 13 and an axle pin 14. The penetration rod 11 is penetrated from the outside of the pump body 1 into the rotating drum 9. The penetration rod 11 is coaxial with the rotating drum 9 and the penetration rod 11 can slide back and forth along its axis. The driving member 12 is arranged on the penetration rod 11 to drive the penetration rod 11 to slide. The connecting block 13 is arranged in the rotating drum 9 and the connecting block 13 is rotatably connected to the end of the penetration rod 11. A strip hole 15 is opened on the connecting block 13, as shown in FIG. Figure 2 As shown, two strip-shaped through holes 16 are opened on the side wall of the rotating drum 9, and the shaft pin 14 is inserted into the strip hole 15 and the two through holes 16 and the shaft pin 14 can slide along the strip hole 15 and the through holes 16, and both ends of the shaft pin 14 are fixedly connected to the eccentric ring 10. The driving member 12 is a threaded barrel structure with internal threads, and the driving member 12 is inserted into the pump body 1 and is rotatably connected to the pump body 1. A plurality of balls 22 are embedded between the outer wall of the driving member 12 and the pump body 1, and the through rod 11 is provided with threads on the rod section close to the outside of the pump body 1, and the driving member 12 is sleeved on the rod section with threads of the through rod 11 and the two are threadedly connected. The operator passes through the driving member 12, and then the penetration rod 11 can reciprocate along the axis of the driving member 12. The penetration rod 11 will drive the connecting block 13 to move synchronously during the movement, and then the movement of the connecting block 13 will drive the bar hole 15 to move, so that the side wall of the bar hole 15 will push the shaft pin 14 to make the shaft pin 14 move in the penetration hole 16, and the movement of the shaft pin 14 drives the eccentric ring 10 to move, thereby changing the distance between the eccentric ring 10 and the rotating drum 9. When the distance between the eccentric ring 10 and the rotating drum 9 is improved, the rotating drum 9 drives the eccentric ring 10 to rotate. The trajectory changes, and then the stroke of the eccentric ring 10 pushing the connecting ring 6 changes, thereby achieving the purpose of adjusting the stroke of the connecting ring 6 and the piston rod 8. This method can be adjusted continuously, so that the adjustment range of the fluid flow can be greatly increased. A rotating handle 17 is fixed on the driving member 12, and the rotating handle 17 is located outside the pump body 1. Rotating the driving member 12 by rotating the handle 17 can save more effort.

[0029] like Figure 1As shown, a first bearing 18 is embedded in the end of the penetration rod 11, and the connecting block 13 is inserted into the center hole of the first bearing 18 and the connecting block 13 is fixedly connected to the inner wall of the center hole of the first bearing 18. This method can reduce the friction between the penetration rod 11 and the connecting block 13 during relative rotation, making the adjustment process more labor-saving.

[0030] like Figure 1 As shown, the pump body 1 is provided with a second bearing 19, the drum 9 is inserted into the center hole of the second bearing 19 and the drum 9 abuts against the inner wall of the center hole of the second bearing 19, which can reduce the relative friction between the drum 9 and the pump body 1 during the rotation process. The drum 9 is provided with a connecting hole 20 at the end facing the outside of the pump body 1, and the operator can connect the rotating shaft on the motor to the drum 9 through the connecting hole 20. The connection hole 20 can facilitate the connection between the drum 9 and the rotating shaft of the motor.

[0031] like Figure 1 and Figure 3 As shown, it also includes a switch assembly connected to the connecting hole 20 and used to drive the rotating drum 9 to rotate. The connecting hole 20 is coaxial with the rotating drum 9, and the switch assembly includes two gears 23 arranged on the pump body 1 and meshing, a rotating shaft 24, a sliding column 25 passing through the connecting hole 20 and being able to slide along the connecting hole 20, an elastic member 26 and an eccentric wheel 27. The rotating shaft 24 is fixedly connected to one of the gears 23 and the two are coaxial. The rotating shaft 24 extends out of the pump body 1, and the other gear 23 is sleeved on the rotating drum 9 and can slide along the rotating drum 9. A mounting hole 28 is opened on the side wall of the rotating drum 9 along the axial direction of the rotating drum 9. A connecting rod 29 is fixed between the sliding column 25 and the gear 23 sleeved on the rotating drum 9. The connecting rod 29 passes through the mounting hole 28, and the connecting rod 29 can slide along the mounting hole 28, the elastic member 26 is sleeved on the rotating drum 9, and the end of the elastic member 26 abuts against the gear 23 sleeved on the rotating drum 9, the elastic member 26 is a spring structure, the eccentric wheel 27 is arranged on the pump body 1, and the eccentric wheel 27 can rotate and drive the sliding column 25 to slide, the eccentric wheel 27 and the elastic member 26 are distributed on both sides of the gear 23 on the rotating drum 9, a third bearing 30 is arranged in the pump body 1, the rotating shaft 24 passes through the center hole of the third bearing 30, and a fourth bearing 31 is also arranged on the pump body 1, and the rotating drum 9 passes through the center hole of the fourth bearing 31.

[0032] The operator gives the rotating shaft 24 continuous output power, so that the rotating shaft 24 rotates, and then the rotating shaft 24 drives the gear 23 fixedly connected thereto to rotate, and the gear 23 drives another gear 23 meshing therewith to rotate. When the connection between the two gears 23 needs to be disconnected, the operator can drive the eccentric wheel 27 to rotate. During the rotation of the eccentric wheel 27, the sliding column 25 will push the sliding column 25, and then the sliding column 25 drives the gear 23 fixedly connected thereto to slide along the axis of the rotating drum 9, thereby disconnecting the two gears 23. At this time, the rotating drum 9 will no longer rotate. When the operator drives the eccentric wheel 27 to rotate again, the eccentric wheel 27 rotates and resets. At this time, the elastic member 26 will push the gear 23 abutting against it, so that the gear 23 slides and resets on the rotating drum 9 and meshes with another gear 23, thereby driving the rotating drum 9 to rotate again. This method can flexibly realize the switching of the rotation state of the rotating drum 9, further improves the structure of the present invention, and improves practicality.

[0033] Working principle:

[0034] The fluid flows from the liquid inlet channel 2 into the liquid storage chamber 3 , then flows from the liquid storage chamber 3 to the liquid outlet channel 4 , and finally flows out from the liquid outlet channel 4 .

[0035] The driving assembly drives the connecting ring 6 to slide, and then the connecting ring 6 drives the piston rod 8 to slide in the liquid storage chamber 3. At this time, a negative pressure cavity is formed in the liquid storage chamber 3, and then the external fluid pushes open the blocking ball 5 used to block the liquid inlet of the liquid inlet channel 2, and then the fluid enters the liquid inlet channel 2 and enters the liquid storage chamber 3. Specifically, the rotating drum 9 drives the eccentric ring 10 to rotate, and the eccentric ring 10 pushes the inner wall of the connecting ring 6 during the rotation process, thereby making the connecting ring 6 slide, so that the connecting ring 6 drives the piston rod 8 to slide;

[0036] Afterwards, the driving assembly drives the connecting ring 6 to slide in the opposite direction, and then the connecting ring 6 drives the piston rod 8 to slide in the opposite direction synchronously. At this time, during the return stroke of the piston rod 8, the push plate 21 on the piston rod 8 will push the fluid in the liquid storage chamber 3, and then the fluid in the liquid storage chamber 3 will push open the sealing ball 5 used to block the liquid inlet of the liquid outlet channel 4, so that the fluid flows from the liquid storage chamber 3 into the liquid outlet channel 4 and is discharged from the liquid outlet channel 4. At the same time, during the sliding return stroke of the piston rod 8, the fluid in the liquid storage chamber 3 will also push the sealing ball 5 in the liquid inlet channel 2, so that the sealing ball 5 in the liquid inlet channel 2 slides in the liquid inlet channel 2 and blocks the liquid inlet of the liquid inlet channel 2, thereby completing the fluid delivery process.

[0037] When the flow rate of the fluid needs to be adjusted, the operator can use the adjustment component to adjust the drive component, thereby allowing the drive component to change the distance of the connecting ring 6, thereby allowing the connecting ring 6 to synchronously change the stroke of the piston rod 8. Specifically, the operator holds the rotating handle 17, and the rotating handle 17 drives the driving member 12 to rotate, and then the driving member 12 drives the penetration rod 11 to slide, and the movement of the penetration rod 11 drives the connecting block 13 to move, and then the inner wall of the strip hole 15 on the connecting block 13 pushes the shaft pin 14, so that the shaft pin 14 slides in the penetration hole 16, and the sliding of the shaft pin 14 drives the eccentric ring 10 to move, and then the distance between the eccentric ring 10 and the rotating drum 9 changes, then the rotating drum 9 is rotated. The cylinder 9 drives the eccentric ring 10 to change its rotation trajectory. After the rotation trajectory of the eccentric ring 10 is changed, the movement stroke of the eccentric ring 10 pushing the connecting ring 6 is changed. Therefore, the movement stroke of the piston rod 8 driven by the connecting ring 6 is changed. When the stroke of the piston rod 8 changes, the size of the negative pressure cavity formed in the liquid storage chamber 3 will also change accordingly, and then the fluid flow rate of the fluid entering the liquid storage chamber 3 will change, thereby achieving the effect of regulating the fluid flow rate. When the driving component is continuously adjusted, the driving component can also continuously change the movement stroke of the connecting ring 6, and then can continuously change the size of the negative pressure cavity that can be formed in the liquid storage chamber 3, thereby achieving the effect of continuously regulating the fluid flow rate.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A filling pump, characterized in that: include: A pump body (1), wherein a liquid inlet channel (2), a liquid storage chamber (3) and a liquid outlet channel (4) are sequentially arranged on the pump body (1) according to the liquid flow direction, and a blocking ball (5) is arranged in each of the liquid inlet channel (2) and the liquid outlet channel (4), and the blocking ball (5) can slide along the liquid inlet channel (2) or the liquid outlet channel (4) to block the liquid inlet of the liquid inlet channel (2) or the liquid inlet of the liquid outlet channel (4); A connecting ring (6), a mounting cavity (7) is formed in the pump body (1), the connecting ring (6) is arranged in the mounting cavity (7), the connecting ring (6) is fixedly connected to a piston rod (8), the piston rod (8) is inserted into the liquid storage cavity (3), the piston rod (8) is sealedly connected to the inner wall of the liquid storage cavity (3) in the circumferential direction of the rod section close to the mounting cavity (7), and the piston rod (8) is fixedly connected to the outer wall of the connecting ring (6); A driving assembly, which is arranged on the pump body (1) and abuts against the inner wall of the connecting ring (6) to drive the connecting ring (6) to move, thereby causing the connecting ring (6) to drive the piston rod (8) to slide back and forth in the liquid storage chamber (3); An adjusting component, which is arranged on the pump body (1) and connected to the driving component, and is used to continuously adjust the driving component so that the driving component continuously changes the movement stroke of the connecting ring (6); The driving assembly comprises a rotating drum (9) and an eccentric ring (10) which are inserted into the pump body (1); one end of the rotating drum (9) extends out of the pump body (1); the other end of the rotating drum (9) is inserted into the central hole of the connecting ring (6); the eccentric ring (10) is arranged outside the rotating drum (9), and the eccentric ring (10) abuts against the inner wall of the connecting ring (6); the eccentric ring (10) is used to push the connecting ring (6) as the rotating drum (9) rotates, thereby causing the connecting ring (6) to move; The adjustment assembly comprises a penetration rod (11), a driving member (12), a connecting block (13) and an axle pin (14); the penetration rod (11) is penetrated from the outside of the pump body (1) into the rotating drum (9); the penetration rod (11) is coaxial with the rotating drum (9) and the penetration rod (11) can slide back and forth along its axis; the driving member (12) is arranged on the penetration rod (11) to drive the penetration rod (11) to slide; the connecting block (13) is arranged in the rotating drum (9) The connecting block (13) is rotatably connected to the end of the penetration rod (11), a strip hole (15) is formed on the connecting block (13), two strip penetration holes (16) are formed on the side wall of the rotating drum (9), an axle pin (14) is penetrated in the strip hole (15) and the two penetration holes (16), and the axle pin (14) can slide along the strip hole (15) and the penetration holes (16), and both ends of the axle pin (14) are fixedly connected to the eccentric ring (10); A second bearing (19) is arranged in the pump body (1), and the rotating cylinder (9) is inserted into the center hole of the second bearing (19), and the rotating cylinder (9) abuts against the inner wall of the center hole of the second bearing (19).

2. The filling pump according to claim 1, characterized in that: The driving member (12) is a threaded barrel structure with an internal thread. The driving member (12) is inserted into the pump body (1) and is rotatably connected to the pump body (1). The insertion rod (11) is provided with threads on a rod section close to the outside of the pump body (1). The driving member (12) is sleeved on the threaded rod section of the insertion rod (11) and the two are threadedly connected.

3. The filling pump according to claim 2, characterized in that: A rotating handle (17) is fixed on the driving member (12), and the rotating handle (17) is located outside the pump body (1).

4. The filling pump according to claim 1, characterized in that: A first bearing (18) is embedded at the end of the penetration rod (11), the connection block (13) is inserted into the center hole of the first bearing (18), and the connection block (13) is fixedly connected to the inner wall of the center hole of the first bearing (18).

5. The filling pump according to claim 1, characterized in that: The end of the rotating drum (9) facing the outside of the pump body (1) is provided with a connecting hole (20).

6. The filling pump according to claim 5, characterized in that: It also includes a switch assembly connected to the connecting hole (20) and used for driving the rotating drum (9) to rotate.

7. The filling pump according to claim 6, characterized in that: The connecting hole (20) is coaxial with the rotating drum (9). The switch assembly comprises two gears (23) arranged on the pump body (1) and meshing with each other, a rotating shaft (24), a sliding column (25) passing through the connecting hole (20) and capable of sliding along the connecting hole (20), an elastic member (26) and an eccentric wheel (27). The rotating shaft (24) is fixedly connected to one of the gears (23) and the two are coaxial. The rotating shaft (24) extends out of the pump body (1). The other gear (23) is sleeved on the rotating drum (9) and can slide along the rotating drum (9). A mounting hole (28) is opened on the side wall of the rotating drum (9) along the axial direction of the rotating drum (9). The sliding column (25) is provided with a plurality of springs and a plurality of springs. A connecting rod (29) is fixed between the column (25) and the gear (23) sleeved on the rotating cylinder (9). The connecting rod (29) is inserted into the mounting hole (28) and can slide along the mounting hole (28). An elastic member (26) is sleeved on the rotating cylinder (9), and an end of the elastic member (26) abuts against the gear (23) sleeved on the rotating cylinder (9). An eccentric wheel (27) is arranged on the pump body (1), and the eccentric wheel (27) can rotate and drive the sliding column (25) to slide. The eccentric wheel (27) and the elastic member (26) are distributed on both sides of the gear (23) on the rotating cylinder (9).

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