CN114396368A

CN114396368A - Additive filling device

Info

Publication number: CN114396368A
Application number: CN202111498176.0A
Authority: CN
Inventors: 蒋应喜; 杨沛; 张振华; 张小龙; 盛涛; 李峰; 马玉琴; 席建厂; 李天武; 王学青; 王继堂; 刘荣; 吴军
Original assignee: XI'AN AEROSPACE PUMPS CO Ltd
Current assignee: XI'AN AEROSPACE PUMPS CO Ltd
Priority date: 2021-12-09
Filing date: 2021-12-09
Publication date: 2022-04-26

Abstract

The invention discloses an additive filling device, which solves the problem that a plunger type adding pump is still in a running state when the existing filling device does not need to fill additives, so that great waste is caused; the improvement is that: the scraper type flowmeter further comprises a clutch arranged between a power output shaft of the scraper type flowmeter and a power input shaft of the plunger type addition pump.

Description

Additive filling device

Technical Field

The invention belongs to the technical field of additive filling, and particularly relates to an additive filling device.

Background

The additive filling device is composed of a high-precision scraper flowmeter, an adding pump and the like, the scraper flowmeter is used as a power source for driving the adding pump, when liquid is conveyed through the flowmeter, the flowmeter drives the adding pump to work simultaneously, the additive is added into an output pipeline according to a preset proportion and is added into a container after being fully mixed, and the online uniform mixing and filling of the additive are realized.

Chinese patent, publication number is: CN103527439A discloses a filling device, which comprises a scraper flowmeter and a plunger type filling pump directly connected with the scraper flowmeter; the plunger type adding pump comprises a shell and a plunger driving mechanism, wherein two plunger mechanisms are symmetrically arranged in the shell by taking the plunger driving mechanism as a center;

the plunger mechanism comprises a working cavity, a piston rod, an outlet one-way valve, an inlet flow passage and an outlet flow passage; the working cavity is transversely arranged along the shell, one end of the piston rod is positioned in the working cavity and is radially sealed with the working cavity, one side of the sealed part is a pressure cavity, the other side of the sealed part is a lubricating cavity, and the other end of the piston rod is connected with the plunger driving mechanism and is controlled by the driving mechanism; the outlet one-way valve and the inlet one-way valve are longitudinally arranged along the shell and distributed on two sides of the working cavity. The plunger driving mechanism adopts a slide block and crankshaft structure.

When the device works, the scraper flowmeter drives the crankshaft to rotate, the slide block converts the rotating motion of the crankshaft into sliding linear reciprocating motion, and drives the piston rods of the two plunger mechanisms to reciprocate, and the filling of the additive is realized by changing the chamber pressure of the pressure chamber.

However, the practical use of the filling device has found that the plunger type addition pump has the following disadvantages:

1. under the working condition that additives are not needed to be filled, only the scraper flowmeter is needed to work, but because the power of the plunger type adding pump is derived from the scraper flowmeter, when the scraper flowmeter works, the plunger type adding pump can be driven to be in a running state, and great waste is caused.

2. The amount of additive added cannot be adjusted quickly.

If the filling amount of the additive needs to be adjusted, the proportion adjusting rod and the bushing gland need to be detached, and the proportion adjusting rod and the bushing gland are replaced with new ones, so that the size of the pressure cavity is changed, the filling amount is adjusted, and a plurality of sets of proportion adjusting rods and bushing glands need to be prepared to meet different filling amounts, thereby increasing the cost.

3. The type matching is not flexible enough when the additive is filled. Only two additives can be added separately or separately.

Disclosure of Invention

The invention provides an additive filling device, aiming at solving the problem that a plunger type filling pump is still in a running state and causes great waste when the existing filling device does not need to fill additives.

The specific technical scheme of the invention is as follows:

an additive filling device comprises a scraper type flowmeter and a plunger type addition pump; the improvement is that: the scraper type flowmeter further comprises a clutch arranged between a power output shaft of the scraper type flowmeter and a power input shaft of the plunger type addition pump.

Further, the clutch comprises a box body, a first gear, a second gear, a rotating shaft, an adjusting rod, a steel ball and an ejector rod;

a first gear and a second gear which are meshed with each other are arranged in the box body; the first gear is used for receiving power output by the scraper type flowmeter;

the rotating shaft is composed of a first shaft section, a second shaft section and a third shaft section which are arranged in sequence; the outer diameter of the second shaft section is larger than that of the first shaft section and the third shaft section;

a notch is arranged on the first shaft section along the axial direction, so that the first shaft section is integrally U-shaped;

the second gear is sleeved on the first shaft section and is connected with the first shaft section through a key;

the third shaft section extends outwards through the side wall of the box body and is used for providing power for the plunger type adding pump;

a spring is arranged between the second shaft section and the second gear;

the adjusting rod comprises an adjusting section, a threaded section, a cylindrical section and a semi-cylindrical section which are arranged in sequence;

the adjusting section is positioned outside the box body, and the thread section is in threaded connection with the box body; a gap is formed between the cylindrical section and the box body, the semi-cylindrical section is contacted with the lower end of the ejector rod through steel balls, the upper end of the ejector rod is connected with a connecting plate, and the connecting plate is arranged in the gap in a sliding manner; the connecting plate and the second gear are connected into a whole through a sunk screw.

Furthermore, the clutch also comprises a first wrench and a fine-toothed nut; the first wrench is used for driving the adjusting rod to rotate in a matching mode with the adjusting section, and the fine-thread nut is matched with the thread section and used for locking the circumferential position of the adjusting rod.

Further, the plunger type adding pump comprises a shell, a plunger driving mechanism, a filling amount adjusting mechanism and two plunger mechanisms; the two plunger mechanisms are symmetrically arranged by taking the plunger driving mechanism as a center; the piston rods of the two plunger mechanisms are positioned in the shell, and a pressure cavity is formed in the shell;

the plunger driving mechanism comprises a crankshaft and a driving wheel; one end of the crankshaft is used for receiving external power, the other end of the crankshaft is provided with a driving wheel, the driving wheel is positioned on a moving path of the piston rods in the plunger mechanisms, and the eccentric motion of the driving wheel drives the piston rods in the two plunger mechanisms to move in a reciprocating mode;

the filling amount adjusting mechanism comprises an adjusting part, a rotating shaft and a reducing cam; one end of the rotating shaft is positioned in the shell, a reducing cam is fixedly installed at the end, the reducing cam is also positioned on a moving path of a piston rod in the plunger mechanism, and a gap is formed between the reducing cam and the driving wheel; the other end of the rotating shaft is positioned outside the shell and is used for being matched with the adjusting part; the rotation adjusting part enables the rotating shaft to drive the reducing cam to rotate, and the size of the pressure cavity is changed by limiting the moving stroke of the piston rod, so that the adjustment of the filling amount is realized.

Furthermore, the adjusting part comprises a wrench, a pointer and a filling scale;

the spanner and the pointer are fixedly connected with one end of the rotating shaft, which is positioned outside the shell, and the shell is provided with a filling scale.

Furthermore, the adjusting part also comprises a locking screw; the locking screw is in threaded connection with the wrench and used for locking the position of the wrench.

Further, the piston mechanism comprises an end cover, a piston rod, a partition plate, an outlet one-way valve and an inlet one-way valve;

the end cover, the outlet one-way valve and the inlet one-way valve are all arranged on the shell, the part of the end cover positioned in the shell is provided with a blind hole,

the piston rod is composed of a first rod section, a transition section and a second rod section;

the first rod section is slidably arranged in the blind hole, so that a pressure cavity is formed in the blind hole, and the pressure cavity is respectively communicated with the outlet one-way valve and the inlet one-way valve;

the transition section penetrates through the partition plate and then is connected with the second rod section, a spring is sleeved on the transition section, one end of the spring is connected with the partition plate, and the other end of the spring is connected with the second rod section;

the end face of the second rod section is used for being in contact with the bearing and the limiting cam.

Further, the plunger type addition pump further comprises an inlet pipeline, an inlet ball valve, an outlet pipeline and an outlet ball valve;

the inlet pipeline is respectively connected with inlet one-way valves in the two piston structures, and the outlet pipeline is respectively connected with outlet one-way valves in the two piston structures;

the inlet ball valve is arranged on the inlet pipeline and is positioned between the two inlet one-way valves;

the outlet ball valve is installed on the outlet pipeline and is positioned between the two outlet one-way valves.

Furthermore, the reducing cam comprises a plurality of pairs of limiting surfaces; each pair of limiting surfaces is symmetrically arranged relative to the rotation center of the reducing cam, and the distance between each pair of limiting surfaces and the rotation center of the reducing cam is different.

Further, the driving wheel is a bearing.

The invention has the following advantages:

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

1. the clutch is arranged between the power output shaft of the scraper type flowmeter and the power input shaft of the plunger type adding pump, so that the plunger type adding pump can stop running under the use working condition without additives, unnecessary waste caused by continuous running of the plunger type adding pump under the working condition is avoided, and the cost is greatly saved.

2. The clutch is formed by the first gear, the second gear, the rotating shaft, the adjusting rod, the steel ball and the ejector rod, when the clutch is used, the adjusting rod only needs to be rotated, and the steel ball moves upwards, so that the ejector rod drives the second gear to slide on the rotating shaft along the axial direction and is disengaged from the state of being meshed with the first gear.

3. The filling amount can be quickly adjusted. The invention is provided with the filling amount adjusting mechanism to replace the proportion adjusting rod in the prior art; when the filling amount needs to be adjusted, the rotating adjusting part enables the rotating shaft to drive the reducing cam to rotate, the size of the pressure cavity is changed by limiting the moving stroke of the piston rod, the filling amount is adjusted, any part does not need to be detached in the adjusting process, any part does not need to be replaced, the working efficiency is improved, and the cost is saved.

4. The additive types can be flexibly matched. By controlling the opening and closing states of the inlet ball valve and the outlet ball valve, the types of the added additives can be flexibly matched to meet the use requirements of different working conditions.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a side view of the present invention;

FIG. 3 is a front cross-sectional view of the clutch;

FIG. 4 is a top view of the clutch;

FIG. 5 is a side cross-sectional view of the clutch;

FIG. 6 is a front cross-sectional view of a plunger type addition pump;

fig. 7 is a side cross-sectional view of a plunger type addition pump.

Fig. 8 is a right side view of fig. 7.

The reference numbers are as follows:

a-scraper type flowmeter, B-plunger type adding pump, C-clutch;

1-shell, 11-first channel, 12-second channel;

2-plunger driving mechanism, 21-crankshaft, 22-driving wheel;

3-filling amount adjusting mechanism, 31-adjusting part, 311-wrench, 312-pointer, 313-filling amount scale, 314-locking nut, 315-locking screw, 32-rotating shaft and 33-reducing cam;

4-two plunger mechanisms, 41-a piston rod, 411-a first rod section, 412-a transition section, 413-a second rod section, 42-an end cover, 43-a partition plate, 44-an outlet one-way valve, 45-an inlet one-way valve and 46-a spring;

5-inlet pipeline, 6-outlet pipeline, 7-inlet ball valve and 8-outlet ball valve;

c1-box, C2-first gear, C3-second gear;

c4-rotation axis, C41-first axis segment, C42-second axis segment, C43-third axis segment, C44-notch, C45-key;

c5-adjusting rod, C51-adjusting section, C52-threaded section, C53-cylindrical section, C54-semi-cylindrical section, C55-first wrench, C56-fine thread nut;

c6-steel ball, C7-ejector pin, C8-spring, C9-link plate.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, specific embodiments accompanied with figures are described in detail below, and it is apparent that the described embodiments are a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making creative efforts based on the embodiments of the present invention, shall fall within the protection scope of the present invention.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

Meanwhile, in the description of the present invention, it should be noted that the terms "upper, lower, inner and outer" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation and operate, and thus, cannot be construed as limiting the present invention. Furthermore, the terms first, second, or third are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The terms "mounted, connected and connected" in the present invention are to be understood broadly, unless otherwise explicitly specified or limited, for example: can be fixedly connected, detachably connected or integrally connected: they may be mechanically, electrically, or directly connected, or indirectly connected through intervening media, or may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The embodiment provides an additive filling device, which adopts a structural form that a scraper type flowmeter A drives a plunger type adding pump B, the device is installed on a main oil filling pipeline, when oil on the main pipeline flows, a scraper of the scraper type flowmeter A is driven to move, the plunger type adding pump B is driven to work, and therefore the additive is prevented from being added into the main oil pipeline, if the additive is not required to be filled and only in an oil filling state is met, the plunger type adding pump is closed, and as shown in figures 1 and 2, a clutch C is additionally arranged between a power output shaft of the scraper type flowmeter A and a power input shaft of the plunger type adding pump B.

As shown in fig. 3, 4 and 5, the specific structure of the clutch C in this embodiment includes a case C1, a first gear C2, a second gear C3, a rotating shaft C4, an adjusting lever C5, a steel ball C6, a carrier rod C7 and a spring C8; a first gear C2 and a second gear C3 which are meshed with each other are arranged in the box body C1 (in the embodiment, the diameter of the first gear is smaller than that of the second gear in order to realize the speed reduction function); the first gear C2 is used for receiving the power output by the scraper blade flowmeter A;

the rotating shaft C4 is composed of a first shaft segment C41, a second shaft segment C42, and a third shaft segment C43, which are arranged in this order; the second shaft segment C42 has a larger outer diameter than the first and third shaft segments C41 and C43; a notch C44 is arranged on the first shaft section C41 along the axial direction, so that the whole body is U-shaped; the second gear C3 is sleeved on the first shaft section C41 and is connected through a key C45; a third shaft segment C43 extends outwardly through a side wall of the housing C1 for powering a plunger addition pump B; a spring C8 is arranged between the second shaft section C42 and the second gear C3;

the adjusting rod C5 comprises an adjusting section C51, a threaded section C52, a cylindrical section C53 and a semi-cylindrical section C54 which are sequentially arranged;

the adjusting section C51 is positioned outside the box body C1 and is provided with a first wrench C55 which is convenient to rotate by hands, and the threaded section C52 is in threaded connection with the box body C1; a gap is reserved between the cylindrical section C53 and the box body C1, the semi-cylindrical section C54 is in contact with the lower end of the ejector rod C7 through a steel ball C6, the upper end of the ejector rod C7 is connected with a connecting plate C9, and the connecting plate C9 is arranged in the notch C44 in a sliding mode; the connecting plate C9 and the second gear C3 are connected into a whole through a countersunk head screw.

The working process of the clutch is as follows:

when the plunger type addition pump is required to work, the adjusting rod C5 is in the position shown in FIG. 4, the steel ball C6 is in the lowest position shown in the figure, the second gear C3 is meshed with the first gear C2, the first gear C2 transmits the rotary power to the second gear C3, the second gear C3 is connected through a key C45 to transmit the rotary power to the rotary shaft C4 again, and the rotary shaft C4 finally transmits the power to the plunger type addition pump;

when the plunger type adding pump does not need to work, the adjusting rod C5 is rotated, the steel ball C6 moves upwards to the highest position, the ejector rod C7 drives the second gear C3 to move upwards, the second gear C3 is disengaged from the first gear C2, at the moment, only the scraper type flowmeter works, and the plunger type adding pump does not work;

when the plunger type adding pump is required to work again, the adjusting rod C5 is reversely rotated, the steel ball C6 returns to the initial lowest position under the restoring force of the spring C8, and the second gear C3 and the first gear C2 are engaged again.

In order to lock the circumferential position of the adjusting rod and lock the on/off position, a fine thread nut C56 is arranged at the threaded section C52, the fine thread nut C56 is screwed, circumferential rotation of the adjusting rod C5 can be avoided, the position of a steel ball C6 cannot be changed, and finally the purpose that the second gear C3 is locked at the on/off position is achieved.

As shown in fig. 6, the plunger type addition pump of the present embodiment has a specific structure including a housing 1, a plunger driving mechanism 2, a filling amount adjusting mechanism 3, two plunger mechanisms 4, an inlet pipe 5, and an outlet pipe 6;

a first channel 11 and a second channel 12 which are mutually orthogonal and run through are arranged in the shell 1;

wherein, the first channel 11 is used for installing the plunger driving mechanism 2 and the filling amount adjusting mechanism 3;

the piston rods 41 of the two plunger mechanisms 4 are located in the second passages 12 (one is located on the left side in the second passage, one is located on the right side in the second passage, and respective pressure chambers are formed in the second passages), and are arranged symmetrically with respect to the first passages 11;

specifically, the plunger drive mechanism 2 is located on the first passage side (described here as the rear side for ease of understanding), and includes a crankshaft 21 and a drive wheel 22; one end of the crankshaft 21 is used for receiving external power (the external power comes from the scraper flowmeter), the other end of the crankshaft is provided with the driving wheel 22, the driving wheel 22 is positioned on the moving path of the piston rod 41 in the plunger mechanism 4 (namely, the position where the first channel 11 and the second channel 12 intersect), the scraper flowmeter drives the crankshaft 21 to rotate so that the driving wheel 22 makes eccentric motion, and the eccentric motion of the driving wheel 22 is finally converted into reciprocating motion of the piston rod in the two plunger mechanisms; in this embodiment, the driving wheel 22 directly adopts a bearing;

as shown in fig. 6 and 7, the filling amount adjusting mechanism 3 is located on the other side (for convenience of understanding, described here as the front side) of the first passage 11, and includes an adjusting portion 31, a rotating shaft 32, and a variable diameter cam 33; one end of the rotating shaft 32 is located inside the first channel 11, the reducing cam 33 is fixedly installed at the end, and the reducing cam 33 is also located on the moving path of the piston rod 41 in the plunger mechanism 4 (i.e. the position where the first channel and the second channel intersect), and it is required to be clear that: the reducing cam 33 and the driving wheel 22 are parallel to each other, and a gap is formed between the reducing cam and the driving wheel (the reducing cam and the driving wheel are not in contact); the other end of the rotating shaft 32 is located outside the first passage 11 for cooperation with the regulating portion 31; when the filling amount needs to be adjusted, the rotation adjusting portion 31 causes the rotating shaft 32 to rotate the reducing cam 33, and the size of the pressure chamber is changed by limiting the moving stroke of the piston rod 41, thereby adjusting the filling amount.

The design of the reducing cam 33 enables the precision of the filling amount adjustment to be very high, which mainly depends on the radius change of the reducing cam, and aiming at the actual use scene, the reducing cam 33 can also be a polygonal mechanism, and the polygonal structure comprises a plurality of pairs of limiting surfaces; each pair of limiting surfaces is symmetrically arranged relative to the rotation center of the reducing cam 33, and the distance from each pair of limiting surfaces to the rotation center of the reducing cam is different. Thus, the logarithm of the limiting surface determines the size and accuracy of the adjustment of the filling amount.

In order to clearly know the degree of filling amount adjustment, as shown in fig. 7 and 8, the specific structure 31 of the adjusting portion in this embodiment includes a wrench 311, a pointer 312, and a filling amount scale 313; the wrench 311 and the pointer 32 are both fixedly connected with one end of the rotating shaft 32 located outside the casing, the filling scale 313 is arranged on the casing 1, and when the rotating shaft 32 rotates to drive the pointer 312 to rotate and point to a certain scale of the filling scale 313, an operator can clearly know the current filling amount.

In order to ensure that the rotation shaft 32 is fixed when the injection amount does not need to be adjusted, the adjusting portion in this embodiment further includes a lock nut 314 for preventing the rotation shaft from rotating and a lock screw 315 for locking a wrench.

The piston mechanism 4 in this embodiment is also changed from the existing structure, and specifically, as shown in fig. 1, includes an end cap 42, a piston rod 41, a partition plate 43, an outlet check valve 44, and an inlet check valve 45;

the end cover 42, the outlet one-way valve 44 and the inlet one-way valve 45 are all arranged on the shell 1, and a blind hole 421 is formed in the inner part of the end cover 42, which is positioned in the shell; the piston rod 41 is formed by a first rod section 411, a transition section 412 and a second rod section 413;

the first rod segment 411 is slidably mounted in the blind hole 421, so as to form a pressure chamber (in the drawing, at a) in the blind hole 421, wherein the pressure chamber is communicated with the outlet check valve 44 and the inlet check valve 45 respectively;

the transition section 412 is connected with the second rod section 413 after penetrating through the partition plate 43, the transition section 412 is sleeved with a spring 46, one end of the spring 46 is connected with the partition plate 43, and the other end of the spring 46 is connected with the second rod section 413; the end surface of the second rod segment 413 is used for contacting the driving wheel 22 and the reducing cam 33.

Compared with the prior art, the plunger type addition pump of the embodiment has a functional optimization, which specifically comprises the following steps: the inlet pipeline 5 is respectively connected with inlet one-way valves 45 in the two piston structures, and the outlet pipeline 6 is respectively connected with outlet one-way valves 44 in the two piston structures; the inlet ball valve 7 is mounted on the inlet pipe 5 and is positioned between the two inlet check valves 45; an outlet ball valve 8 is mounted on the outlet pipe 6 between the two outlet check valves 44.

When in use: when the inlet ball valve 7 and the outlet ball valve 8 are opened simultaneously, the filling of a single additive can be met;

when the inlet ball valve 7 is closed and the outlet ball valve 8 is opened, the mixing and filling of two additives can be met;

when the inlet ball valve 7 and the outlet ball valve 8 are closed at the same time, separate filling of the two additives can be satisfied.

The method can flexibly match the types of the added additives, thereby meeting the use requirements of different working conditions.

Claims

1. An additive filling device comprises a scraper type flowmeter and a plunger type addition pump; the method is characterized in that: the scraper type flowmeter further comprises a clutch arranged between a power output shaft of the scraper type flowmeter and a power input shaft of the plunger type addition pump.

2. The additive filling apparatus according to claim 1, wherein: the clutch comprises a box body, a first gear, a second gear, a rotating shaft, an adjusting rod, a steel ball and an ejector rod;

a spring is arranged between the second shaft section and the second gear;

3. The additive filling apparatus according to claim 2, wherein: the nut further comprises a first wrench and a fine-pitch nut; the first wrench is used for driving the adjusting rod to rotate in a matching mode with the adjusting section, and the fine-thread nut is matched with the thread section and used for locking the circumferential position of the adjusting rod.

4. An additive filling apparatus as defined in claim 1, 2 or 3, wherein: the plunger type adding pump comprises a shell, a plunger driving mechanism, a filling amount adjusting mechanism and two plunger mechanisms; the two plunger mechanisms are symmetrically arranged by taking the plunger driving mechanism as a center; the piston rods of the two plunger mechanisms are positioned in the shell, and a pressure cavity is formed in the shell;

5. The additive filling apparatus according to claim 4, wherein: the adjusting part comprises a spanner, a pointer and a filling scale;

6. The additive filling apparatus according to claim 5, wherein: the adjusting part also comprises a locking screw; the locking screw is in threaded connection with the wrench and used for locking the position of the wrench.

7. The additive filling apparatus according to claim 6, wherein: the piston mechanism comprises an end cover, a piston rod, a partition plate, an outlet one-way valve and an inlet one-way valve;

8. The additive filling apparatus according to claim 7, wherein: the device also comprises an inlet pipeline, an inlet ball valve, an outlet pipeline and an outlet ball valve;

9. The additive filling apparatus according to claim 8, wherein: the reducing cam comprises a plurality of pairs of limiting surfaces; each pair of limiting surfaces is symmetrically arranged relative to the rotation center of the reducing cam, and the distance between each pair of limiting surfaces and the rotation center of the reducing cam is different.

10. The additive filling apparatus according to claim 9, wherein: the driving wheel is a bearing.