Device for injecting pellet feed into hydraulic conveying pipe system

Abstract

The invention provides a device for injecting pellet feed into a hydraulic conveying pipe system. The device comprises a stator shell and a rotor assembly. The rotor assembly is rotatably assembled in the stator shell, the rotor assembly is provided with three containing cavities, the stator shell is provided with three inlet and outlet sets, and the three inlet and outlet sets are the feed filling set, the feed discharging set and the water draining set in sequence in the rotating direction of the rotor assembly. Every time the rotor assembly rotates by 120 degrees, the three containing cavities correspond to the three inlet and outlet sets, and the feed filling set is used for filling the containing cavities communicated with the feed filling set with feed. The feed discharging set is used for being externally connected with a hydraulic conveying pipe system and discharging feed in the containing cavity to the hydraulic conveying pipe system by injecting water into the containing cavity communicated with the feed discharging set. And the water draining group is used for draining water remained in the accommodating cavity. Therefore, the feed can be quickly discharged to the hydraulic conveying pipe system with low loss.

Description

Technical Field

[0001] The invention relates to the field of fishery facilities, and in particular to a device for injecting granular feed into a hydraulic conveying pipe system. Background Art

[0002] In fishery facilities, in order to reduce the damage of feed during transportation, reduce the energy consumption of transportation and realize long-distance transportation of feed, hydraulic feed transportation has become the development direction of feeding equipment, among which injecting feed into hydraulic pipelines has become one of the key technologies. How to inject feed into hydraulic pipelines with low loss and fast speed is a difficult problem that needs to be overcome. Summary of the invention

[0003] Therefore, in order to solve the above problems, the present invention provides a device for injecting pellet feed into a hydraulic conveying pipe system.

[0004] To achieve the above purpose, the technical solution provided by the present invention is as follows:

[0005] A device for injecting pellet feed into a hydraulic conveying pipe system, comprising a stator housing and a rotor assembly; the rotor assembly is rotatably assembled in the stator housing, the rotor assembly is provided with three accommodating chambers, the three accommodating chambers are evenly distributed along the circumferential direction of the rotor assembly, the stator housing is provided with three groups of inlet and outlet groups, the three groups of inlet and outlet groups are evenly distributed along the circumferential direction of the stator housing, and are a feed filling group, a feed discharge group and a water drainage group in sequence along the rotation direction of the rotor assembly; the rotor assembly rotates 120° every time so that the three accommodating chambers correspond to the three groups of inlet and outlet groups respectively, the feed filling group is used to fill the feed into the accommodating chamber connected thereto; the feed discharge group is used to connect to an external hydraulic conveying pipe system, and discharge the feed in the accommodating chamber into the hydraulic conveying pipe system by injecting water into the accommodating chamber connected thereto; the water drainage group discharges the water retained in the accommodating chamber.

[0006] Furthermore, the three accommodating chambers all have an upper opening and a lower opening; and a filter with a mesh smaller than the diameter of the pellet feed is arranged in the accommodating chamber.

[0007] Furthermore, the feed filling group includes a feed injection port opened above the stator shell and a lower outlet located below the feed injection port. When the rotor assembly rotates to one of the accommodating chambers corresponding to the feed filling group, the feed injection port is connected to the upper opening of the accommodating chamber, and the lower outlet is connected to the lower opening of the accommodating chamber; the stator shell is equipped with a feeding hopper connected to the feed injection port.

[0008] Furthermore, the feed discharge group includes a feed discharge port opened above the stator housing and a water inlet located below the feed discharge port. When the rotor assembly rotates to one of the accommodating chambers corresponding to the feed discharge group, the feed discharge port is connected to the upper opening of the accommodating chamber, and the water inlet is connected to the lower opening of the accommodating chamber; the stator housing is equipped with a water inlet pipe connected to the water inlet and a discharge pipe connected to the feed discharge port; the discharge pipe is used to be connected to an external hydraulic conveying pipe system; and the water inlet pipe is used to connect a water pump.

[0009] Furthermore, an auxiliary channel is provided on the rotor assembly, and an auxiliary water inlet and an auxiliary water outlet are provided on the stator housing. When the rotor assembly rotates until the accommodating cavity is staggered with the inlet and outlet groups, the auxiliary water inlet and the auxiliary water outlet are connected to the auxiliary channel of the rotor assembly, and the auxiliary water inlet shares a water inlet pipe with the connecting water inlet.

[0010] Furthermore, the auxiliary water outlet is connected to an auxiliary water outlet pipe, and the auxiliary water outlet pipe is connected to the discharge pipe.

[0011] Furthermore, the drainage group includes an air vent opened above the stator housing and a drainage port located below the air vent. When the rotor assembly rotates to one of the accommodating cavities corresponding to the drainage group, the air vent is connected to the upper opening of the accommodating cavity, and the drainage port is connected to the lower opening of the accommodating cavity.

[0012] Furthermore, the stator shell includes a cylindrical outer shell, an upper bushing, a lower bushing, an upper cover plate and a lower cover plate; the upper bushing and the lower bushing are respectively fixed at the upper end position and the lower end position of the inner cavity of the outer shell, and the rotor assembly is assembled in the upper bushing and the lower bushing, the upper cover plate covers the end opening of the upper bushing, and the lower cover plate covers the end opening of the lower bushing; the upper end of the rotor assembly forms a rotational fit with the upper cover plate through a bearing, and the lower end of the rotor assembly forms a rotational fit with the lower cover plate through a bearing.

[0013] Furthermore, the three accommodating cavities of the rotor assembly are all vertical cavities, and all have an upper opening and a lower opening; the rotor assembly is equipped with sealing rings on the upper and lower sides of the upper opening and on the upper and lower sides of the lower opening, and the sealing ring forms an incomplete sealing fit with the stator housing, and the stator housing is provided with a first water leakage port on the upper and lower sides of the upper opening of the accommodating cavity and on the upper and lower sides of the lower opening of the accommodating cavity.

[0014] Furthermore, the stator shell is provided with a second water leakage port at the same level as the lower opening of the accommodating cavity, and the second water leakage port is arranged between the feed discharge group and the feed filling group and between the feed discharge group and the water drainage group; the stator shell is provided with a third water leakage port at the same level as the upper opening of the accommodating cavity, and the third water leakage port is arranged between the feed discharge group and the feed filling group and between the feed discharge group and the water drainage group.

[0015] The technical solution provided by the present invention has the following beneficial effects:

[0016] The stator housing and the rotor assembly are provided with a matching structure, and the rotor assembly rotates 120 degrees every time so that the three accommodating chambers correspond to the three groups of inlet and outlet groups, respectively, and the feed filling, water injection and water discharge can be performed synchronously, so as to realize the rapid injection of the hydraulic conveying pipe system and high feed supply efficiency; and the feed is discharged together by water injection, so that the discharge of feed with low loss can be realized. The device provided by the present application has a simple structural design and a good feed supply effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The figure is a schematic diagram of the three-dimensional structure of the device for injecting pellet feed into the hydraulic conveying pipe system in the embodiment;

[0018] Figure 2 The figure shows a top view of a device for injecting pellet feed into a hydraulic conveying pipe system in an embodiment;

[0019] Figure 3 Shown Figure 2 Sectional view along line AA;

[0020] Figure 4 Shown Figure 2 Sectional view along the midline BB;

[0021] Figure 5 Shown Figure 2 Sectional view of the mid-CC line;

[0022] Figure 6 The figure shows a side view of a device for injecting pellet feed into a hydraulic conveying pipe system in an embodiment;

[0023] Figure 7 Shown Figure 6 Sectional view along the mid-DD line;

[0024] Figure 8 Shown Figure 6 Sectional view along line EE;

[0025] Fig. 9 Shown Figure 6 Sectional view along line FF;

[0026] Fig.10 Shown Fig. 9 A schematic diagram of the rotor assembly in the structure shown rotating to another state;

[0027] Fig.11 The figure shows a schematic diagram of the structure of the rotor assembly for injecting pellet feed into the hydraulic conveying pipe system in the embodiment;

[0028] Fig.12 Shown is a schematic structural diagram of the lower cover plate in the embodiment. DETAILED DESCRIPTION

[0029] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0030] In the description of the present invention, terms such as "up", "down", "left", "right", "front", "back", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0031] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0032] Reference Figures 1 to 12 As shown, the present embodiment provides a device for injecting pellet feed into a hydraulic conveying pipe system, comprising a stator housing 100 and a rotor assembly 200; the rotor assembly 200 is rotatably assembled in the stator housing 100, the rotor assembly 200 is provided with three accommodating chambers 201, the three accommodating chambers 201 are evenly distributed along the circumferential direction of the rotor assembly 200, the stator housing 100 is provided with three groups of inlet and outlet groups, the three groups of inlet and outlet groups are evenly distributed along the circumferential direction of the stator housing 100, and are feed filling groups, feed discharge groups and water drainage groups in sequence along the rotation direction of the rotor assembly 200; the rotor assembly 200 rotates 120° every time so that the three accommodating chambers 201 correspond to the three groups of inlet and outlet groups, respectively. Figures 3 to 5 As shown, Figure 3 One of the accommodating cavities 201 corresponds to a feed filling group, and the feed filling group is used to fill the feed into the accommodating cavity 201 connected thereto; Figure 4 Another accommodating chamber 201 corresponds to a feed discharge group, which is used to be connected to an external hydraulic conveying pipe system, and to discharge the feed in the accommodating chamber 201 to the hydraulic conveying pipe system by injecting water into the accommodating chamber 201 connected thereto, that is, after the water is injected into the accommodating chamber 201, the feed in the accommodating chamber 201 is taken out together and discharged to the hydraulic conveying pipe system; Figure 5 The figure shows that another accommodating chamber 201 corresponds to a water draining group, and the water draining group discharges the water retained in the accommodating chamber 201 .

[0033] For example, the three accommodating chambers 201 are defined as the first accommodating chamber, the second accommodating chamber, and the third accommodating chamber. At the beginning of the operation, the first accommodating chamber corresponds to the feed filling group, and the feed filling group fills the feed into the first accommodating chamber. Afterwards, the rotor assembly 200 rotates 120° for the first time. At this time, the first accommodating chamber corresponds to the feed discharge group, and the feed discharge group injects water into the first accommodating chamber to discharge the feed in the first accommodating chamber into the hydraulic conveying pipe system; at the same time, the second accommodating chamber corresponds to the feed filling group, and the feed filling group fills the feed into the second accommodating chamber. Afterwards, the rotor assembly 200 rotates 120° for the second time. At this time, the first accommodating chamber corresponds to the water discharge group, and the water discharge group discharges the water retained in the first accommodating chamber. The second accommodating chamber corresponds to the feed discharge group, and the feed discharge group injects water into the second accommodating chamber to discharge the feed in the second accommodating chamber into the hydraulic conveying pipe system. The third accommodating chamber corresponds to the feed filling group, and the feed filling group fills the feed into the third accommodating chamber. Afterwards, the rotor assembly rotates 120° for the third time. At this time, the first accommodating chamber corresponds to the feed filling group again, and the feed filling group fills the feed into the first accommodating chamber. The second accommodating chamber corresponds to the water discharge group, and the water discharge group discharges the water retained in the second accommodating chamber. The third accommodating chamber corresponds to the feed discharge group, and the feed discharge group injects water into the third accommodating chamber to discharge the feed in the third accommodating chamber into the hydraulic conveying pipe system. In this cycle, the rotor assembly 200 can synchronously perform the actions of feed filling, water injection and water discharge every 120° rotation, so as to quickly inject the feed into the hydraulic conveying pipe system and achieve high feed supply efficiency; and the feed is discharged together by water injection, which reduces the wear on the feed and can achieve low-loss discharge of the feed. The device provided by the present application has a simple structural design and good feed supply effect.

[0034] The solution of the present application enables the technology of hydraulic feed delivery to be realized, thereby realizing feed delivery over long distances, so as to meet the needs of delivering feed over long distances in offshore aquaculture or delivering feed to bottom-diving aquaculture cages. The key technical link of automatic hydraulic feeding and delivery is solved.

[0035] The three accommodating chambers 201 have the same structure, and all have an upper opening 202 and a lower opening 203; a filter screen with a mesh smaller than the diameter of the pellet feed is arranged in the accommodating chamber 201, and the filter screen is used to support the pellet feed and prevent the feed from leaking from the lower opening 203, and at the same time, it will not hinder the circulation of water.

[0036] Specifically, the rotor assembly 200 includes a rotor upper portion 21, a rotor middle portion 22 and a rotor lower portion 23 which are sequentially connected from top to bottom, the upper opening 202 is formed at the rotor upper portion 21, and the chamber 204 of the accommodating cavity 201 is formed at the rotor middle portion 22. Specifically, the chamber 204 of the accommodating cavity 201 is a vertical through cavity that passes through the rotor middle portion 22 from top to bottom, and the lower opening 203 is formed at the rotor lower portion 23; in this way, the upper opening 202, the chamber 204 and the lower opening 203 are prepared separately, and then the rotor upper portion 21, the rotor middle portion 22 and the rotor lower portion 23 are spliced ​​and fixed to obtain the rotor assembly 200, which is easier to process and assemble.

[0037] The filter is assembled on the rotor lower part 23. Specifically, a mounting opening is provided on the rotor lower part 23, and the filter is fixedly assembled on the mounting opening. With such an arrangement, before assembling the rotor middle part 22 and the rotor lower part 23, the filter is first assembled on the rotor lower part 23, which facilitates the installation of the filter.

[0038] Of course, in other embodiments, the structure of the rotor assembly 200 is not limited thereto. For example, the rotor upper portion 21 , the rotor middle portion 22 and the rotor lower portion 23 may also be an integrally connected structure.

[0039] For details, please refer to Figure 3 As shown, the feed filling group includes a feed injection port 111 opened on the upper part of the stator housing 100 and a lower outlet 112 located below the feed injection port 111. When the rotor assembly 200 rotates to one of the accommodating chambers 201 corresponding to the feed filling group, the feed injection port 111 is connected to the upper opening 202 of the accommodating chamber 201, and the lower outlet 112 is connected to the lower opening 203 of the accommodating chamber 201. The stator housing 100 is equipped with a hopper 31 connected to the feed injection port 111. The feed is injected from the hopper 31, passes through the feed injection port 111 to reach the corresponding accommodating chamber 201, and is supported by the filter screen in the accommodating chamber 201.

[0040] Detailed reference Figure 4As shown, the feed discharge group includes a feed discharge port 113 opened above the stator housing 100 and a water inlet 114 located below the feed discharge port 113. When the rotor assembly 200 rotates to one of the accommodating chambers 201 corresponding to the feed discharge group, the feed discharge port 113 is connected to the upper opening 202 of the accommodating chamber 201, and the water inlet 114 is connected to the lower opening 203 of the accommodating chamber 201; the stator housing 100 is equipped with a water inlet pipe 32 connected to the water inlet 114 and a discharge pipe 33 connected to the feed discharge port 113; the discharge pipe 33 is used for externally connecting a hydraulic conveying pipe system; the water inlet pipe 32 is connected to a water pump. The water pump pumps water (such as water directly extracted from the fish pond or seawater) into the water inlet pipe 32, and injects it into the accommodating chamber 201 from the water inlet pipe 32. The water is injected upward from the lower opening 203 of the accommodating chamber 201, and finally flows into the discharge pipe 33 from the upper opening 202 of the accommodating chamber 201 until it is discharged into the hydraulic conveying pipeline system.

[0041] Detailed reference Figure 5 As shown, the drainage group includes an air vent 115 opened above the stator housing 100 and a drainage port 116 located below the air vent 115. When the rotor assembly 200 rotates to one of the accommodating chambers 201 corresponding to the drainage group, the air vent 115 is connected to the upper opening 202 of the accommodating chamber 201, and the drainage port 116 is connected to the lower opening 203 of the accommodating chamber 201. The water retained in the accommodating chamber 201 is quickly discharged through the lower opening 203 of the accommodating chamber 201 and the drainage port 116 in sequence; so as to inject feed next time. Specifically, a ventilation pipe 34 connected to the air vent 115 is provided on the stator housing 100.

[0042] The stator housing 100 includes a cylindrical outer shell 11, an upper bushing 12, a lower bushing 13, an upper cover plate 14 and a lower cover plate 15; the upper bushing 12 and the lower bushing 13 are respectively fixed at the upper end position and the lower end position of the inner cavity of the outer shell 11, and a static seal is formed between the upper bushing 12 and the outer shell 11, and between the lower bushing 13 and the outer shell 11. The rotor assembly 200 is assembled in the upper bushing 12 and the lower bushing 13, the upper cover plate 14 covers the end opening of the upper bushing 12, and the lower cover plate 15 covers the end opening of the lower bushing 13; the upper end of the rotor assembly 200 forms a rotational fit with the upper cover plate 14 through a bearing (defined as an upper bearing 61), and the lower end of the rotor assembly 200 forms a rotational fit with the lower cover plate 15 through a bearing (defined as a lower bearing 62). Specifically, the upper end of the rotor assembly 200 is an upper output disc shaft 24, which is rotatably matched with the upper cover plate 14 through an upper bearing 61. At the same time, the upper output disc shaft 24 has a drive shaft extending upward from the upper cover plate 14, and the drive shaft is used to connect the rotation drive device. The lower end of the rotor assembly 200 is a lower output disc shaft 26, which is rotatably matched with the lower cover plate 15 through a lower bearing 62.

[0043] Furthermore, in order to facilitate assembly with the upper bearing 61, in this embodiment, a first mounting opening 141 is opened in the middle of the upper cover plate 14, and the outer ring of the upper bearing 61 is sleeved in the first mounting opening 141 of the upper cover plate 14. At the same time, in order to protect the upper bearing 61, the top of the upper cover plate 14 is also covered with an upper bearing pressure cover 16, which blocks the first mounting opening 141 of the upper cover plate 14 and positions the upper bearing 61.

[0044] Similarly, in order to facilitate assembly with the lower bearing 62, in this embodiment, a second mounting opening 154 is opened in the middle of the lower cover plate 15, and the outer ring of the lower bearing 62 is sleeved in the second mounting opening 154 of the lower cover plate 15. At the same time, in order to protect the lower bearing 62, the bottom of the lower cover plate 15 is also covered with a lower bearing pressure cover 17, which blocks the second mounting opening 154 of the lower cover plate 15 and positions the lower bearing 62.

[0045] The upper bushing 12 and the lower bushing 13 are provided to match the rotor upper part 21 and the rotor lower part 23 of the rotor assembly 200, and a large distance is formed between the rotor middle part 22 of the rotor assembly 200 and the outer shell 11. In this way, when the sizes of the outer shell 11 and the rotor assembly 200 are fixed, the thickness of the upper bushing 12 and the lower bushing 13 can be adjusted to form the best size match between the rotor assembly 200 and the stator shell 100.

[0046] The feed injection port 111 of the feed filling group, the feed discharge port 113 of the feed discharge group and the air vent 115 of the water discharge group all pass through the upper bushing 12 and the outer shell 11 at the same time; the lower outlet 112 of the feed filling group, the water inlet 114 of the feed discharge group and the water discharge port 116 of the water discharge group all pass through the lower bushing 13 and the outer shell 11 at the same time.

[0047] In order to reduce the friction between the rotor assembly 200 and the stator housing 100 during rotation, a larger fitting clearance is provided between the rotor assembly 200 and the upper bushing 12 and between the rotor assembly 200 and the lower bushing 13. To this end, the rotor assembly 200 is equipped with sealing rings (defined as first sealing rings) on the upper and lower sides of the upper opening 202 and on the upper and lower sides of the lower opening 203. The first sealing ring forms an incomplete sealing fit with the stator housing 100; that is, the first sealing ring provided on the upper and lower sides of the upper opening 202 of the rotor assembly 200 forms an incomplete sealing fit with the upper bushing 12; the first sealing ring provided on the upper and lower sides of the lower opening 203 of the rotor assembly 200 forms an incomplete sealing fit with the lower bushing 13. The first sealing ring and the stator housing 100 form an incomplete sealing fit. On the one hand, it effectively reduces the water leakage from the upper and lower gaps, allowing only a small amount of water to seep out from the first sealing ring. On the other hand, it avoids excessive wear of the first sealing ring. The water seeping from the first sealing ring also has a good lubrication effect on the first sealing ring, effectively prolonging its service life and reducing the number of maintenance times.

[0048] Furthermore, the stator housing 100 is provided with first water leakage ports 41 at upper and lower sides of the upper opening 202 of the accommodating cavity 201 and at upper and lower sides of the lower opening 203 of the accommodating cavity 201, so as to discharge leaked water in time and prevent water from further penetrating into the rotating mating bearing.

[0049] Specifically, there is a large space between the rotor middle part 22 of the rotor assembly 200 and the outer shell 11 to collect water, and then discharge it uniformly from the first water leakage port 41. The rotor assembly 200 has a small clearance between the upper bushing 12 and the upper side of the upper opening 202, and the rotor assembly 200 has a small clearance between the lower bushing 13 and the lower side of the lower opening 203, and these two positions are not easy to collect water. Therefore, the rotor assembly 200 is provided with a water leakage annular groove 205 at the upper side of the upper opening 202 and at the lower side of the lower opening 203, and the first water leakage port 41 is provided corresponding to the water leakage annular groove 205, and the water leakage annular groove 205 can effectively collect water, and then discharge it uniformly from the first water leakage port 41.

[0050] At the same time, at the same level as the water inlet 114, water seepage will also occur in the fitting gap between the rotor assembly 200 and the lower bushing 13. In order to prevent the high-pressure water entering the water inlet 114 from seeping into the other two groups (i.e., the feed filling group and the water discharge group) through the fitting gap and affecting the operation, as shown in FIG. Figure 8 As shown, in this embodiment, the stator housing 100 is provided with a second water leakage port 42 at the same layer position as the lower opening 203 of the accommodating cavity 201, and the second water leakage port 42 is arranged between the feed discharge group and the feed filling group and between the feed discharge group and the water drainage group; in this way, water leaking from the fitting gap will first leak out from the second water leakage port 42 before reaching the feed filling group and the water drainage group.

[0051] Similarly, the high-pressure water discharged from the feed discharge port 113 of the feed discharge group will also seep out from the matching gap of the layer. Figure 7 As shown, the stator housing 100 is provided with a third water leakage opening 43 at the same level as the upper opening 202 of the accommodating cavity 201, and the third water leakage opening 43 is arranged between the feed discharge group and the feed filling group and between the feed discharge group and the water drainage group. In this way, water leaking from the fitting gap will first leak out from the third water leakage opening 43 before reaching the feed filling group and the water drainage group.

[0052] Specifically, the clearance fit between the rotor assembly 200 and the stator housing 100 described above enables the device to operate better, and the water seeping out from the clearance is small in amount and will basically not affect the operation of the device.

[0053] Furthermore, the water inlet pipe 32 is connected to the water pump. During operation, the water pump works continuously. When the lower opening 203 of the accommodating chamber 201 is staggered with the water inlet 114, the water in the water inlet pipe 32 will be blocked, which will affect the water pump or even damage it. To this end, in this embodiment, the rotor assembly 200 is provided with an auxiliary channel 501, and the stator housing 100 is provided with an auxiliary water inlet 121 and an auxiliary water outlet 122. Fig. 9 and Fig.10 As shown, the number of the auxiliary water inlet 121 is one, and the number of the auxiliary water outlet 122 is two, forming a one-in and two-out structure; of course, the number of the auxiliary water inlet 121 and the auxiliary water outlet 122 is not limited thereto. When the rotor assembly 200 rotates until the accommodating cavity 201 is staggered with the inlet and outlet groups, as shown in FIG. Fig.10 As shown, the auxiliary water inlet 121 and the auxiliary water outlet 122 are connected to the auxiliary channel 501 of the rotor assembly 200, and the auxiliary water inlet 121 and the connecting water inlet 114 share the water inlet pipe 32. In this way, when the water inlet 114 is blocked, the water in the water inlet pipe 32 can enter the auxiliary channel 501 from the auxiliary water inlet 121 and then flow out from the auxiliary water outlet 122, avoiding the water pump being affected by the water in the water inlet pipe 32 being blocked. When the lower opening 203 of the accommodating cavity 201 corresponds to the water inlet 114, as shown in FIG. Fig. 9 As shown, the auxiliary water inlet 121 and the auxiliary channel 501 are staggered, and water flows in from the water inlet 114 .

[0054] Furthermore, the rotor assembly 200 also includes an auxiliary part 25, which is spliced ​​at the lower end of the rotor lower part 23, and the auxiliary channel 501 is formed on the auxiliary part 25. Specifically, the auxiliary part 25 also forms an incomplete sealing fit with the lower bushing 13 through the first sealing ring, and a water leakage annular groove 205 is also provided below the auxiliary channel 501, and a first water leakage port 41 corresponding to the water leakage annular groove 205 below the auxiliary channel 501 is also provided on the stator housing 100 to achieve water collection and unified discharge.

[0055] Furthermore, the auxiliary water outlet 122 is connected to the auxiliary water outlet pipe 37, and the auxiliary water outlet pipe 37 is connected to the discharge pipe 33. The water flowing out of the auxiliary water outlet 122 is also discharged from the discharge pipe 33 into the hydraulic conveying pipe system, which simplifies the structure and can further drain the feed that may remain in the discharge pipe 33.

[0056] At the same time, in order to ensure that the upper bearing 61 at the upper end of the rotor assembly 200 and the lower bearing 62 at the lower end are not easily affected by the water seeping from the gap, in this embodiment, at the upper end position of the rotor assembly 200, the upper output disc shaft 24 is provided with an upwardly protruding first annular wall 241 on the periphery of the upper bearing 61, and the first annular wall 241 is matched with the upper cover plate 14 through a sealing ring (defined as a second sealing ring). At the same time, on the outer side of the first annular wall 241, the upper bushing 12 is also provided with a fourth water leakage port 44. With such arrangement, the high-pressure water discharged from the feed discharge port 113 of the feed discharge group, the water seeping upward first passes through the upper water leakage annular groove 205 and is discharged from the first water leakage port 41. If the water in the water leakage annular groove 205 also seeps upward to the upper output disk shaft 24, then this part of the water will also be discharged from the fourth water leakage port 44. The first annular wall 241 arranged on the periphery of the upper bearing 61 and the structure in which the first annular wall 241 cooperates with the upper cover plate 14 through the second sealing ring can further ensure that the water will not pass over the first annular wall 241 and contact the upper bearing 61.

[0057] At the lower end of the rotor assembly 200, as Fig.12 As shown, the lower cover plate 15 is provided with a second annular wall 151 protruding upward on the periphery of the lower bearing 62, the outer ring of the lower bearing 62 is assembled on the inner ring wall of the second annular wall 151, and the outer ring wall of the second annular wall 151 cooperates with the lower output disc shaft 26 through a third sealing ring; an annular groove 153 is formed on the periphery of the second annular wall 151, and the lower cover plate 15 also has a leakage hole 152 that passes through the groove 153 from top to bottom; when water penetrates into the lower cover plate 15 from the gap between the lower output disc shaft 26 and the lower bushing 13, the water gathers in the groove 153 and then leaks out from the leakage hole 152 in time, thereby effectively preventing water from contacting the lower bearing 62.

[0058] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes may be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined by the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A device for injecting pellet feed into a hydraulic conveying pipe system, characterized in that: It comprises a stator housing and a rotor assembly; the rotor assembly is rotatably assembled in the stator housing, the rotor assembly is provided with three accommodating chambers, the three accommodating chambers are evenly distributed along the circumferential direction of the rotor assembly, the stator housing is provided with three groups of inlet and outlet groups, the three groups of inlet and outlet groups are evenly distributed along the circumferential direction of the stator housing, and are a feed filling group, a feed discharge group and a water drainage group in sequence along the rotation direction of the rotor assembly; the rotor assembly rotates 120° every time so that the three accommodating chambers correspond to the three groups of inlet and outlet groups respectively, the feed filling group is used to fill the feed into the accommodating chamber connected thereto; the feed discharge group is used to connect to an external hydraulic conveying pipe system, and discharge the feed in the accommodating chamber to the hydraulic conveying pipe system by injecting water into the accommodating chamber connected thereto; the water drainage group discharges the water retained in the accommodating chamber.

2. The device for injecting pellet feed into a hydraulic conveying pipe system according to claim 1, characterized in that: The three accommodating chambers all have an upper opening and a lower opening; a filter screen with mesh openings smaller than the diameter of the pellet feed is arranged in the accommodating chamber.

3. The device for injecting pellet feed into a hydraulic conveying pipe system according to claim 2, characterized in that: The feed filling group includes a feed injection port opened above the stator shell and a lower outlet located below the feed injection port. When the rotor assembly rotates to one of the accommodating cavities corresponding to the feed filling group, the feed injection port is connected to the upper opening of the accommodating cavity, and the lower outlet is connected to the lower opening of the accommodating cavity; the stator shell is equipped with a feeding hopper connected to the feed injection port.

4. The device for injecting pellet feed into a hydraulic conveying pipe system according to claim 2, characterized in that: The feed discharge group includes a feed discharge port opened above the stator housing and a water inlet located below the feed discharge port. When the rotor assembly rotates to one of the accommodating chambers corresponding to the feed discharge group, the feed discharge port is connected to the upper opening of the accommodating chamber, and the water inlet is connected to the lower opening of the accommodating chamber; the stator housing is equipped with a water inlet pipe connected to the water inlet and a discharge pipe connected to the feed discharge port; the discharge pipe is used to be connected to an external hydraulic conveying pipe system; the water inlet pipe is used to connect a water pump.

5. The device for injecting pellet feed into a hydraulic conveying pipe system according to claim 4, characterized in that: An auxiliary channel is provided on the rotor assembly, and an auxiliary water inlet and an auxiliary water outlet are provided on the stator housing. When the rotor assembly rotates until the accommodating cavity is staggered with the inlet and outlet groups, the auxiliary water inlet and the auxiliary water outlet are connected to the auxiliary channel of the rotor assembly, and the auxiliary water inlet and the connecting water inlet share a water inlet pipe.

6. The device for injecting pellet feed into a hydraulic conveying pipe system according to claim 5, characterized in that: The auxiliary water outlet is connected to the auxiliary water outlet pipe, and the auxiliary water outlet pipe is connected to the discharge pipe.

7. The device for injecting pellet feed into a hydraulic conveying pipe system according to claim 2, characterized in that: The drainage group includes an air vent opened above the stator housing and a drainage port located below the air vent. When the rotor assembly rotates to one of the accommodating cavities corresponding to the drainage group, the air vent is connected to the upper opening of the accommodating cavity, and the drainage port is connected to the lower opening of the accommodating cavity.

8. The device for injecting pellet feed into a hydraulic conveying pipe system according to claim 1, characterized in that: The stator shell includes a cylindrical outer shell, an upper bushing, a lower bushing, an upper cover plate and a lower cover plate; the upper bushing and the lower bushing are respectively fixed at the upper end position and the lower end position of the inner cavity of the outer shell, and the rotor assembly is assembled in the upper bushing and the lower bushing, the upper cover plate covers the end opening of the upper bushing, and the lower cover plate covers the end opening of the lower bushing; the upper end of the rotor assembly forms a rotational fit with the upper cover plate through a bearing, and the lower end of the rotor assembly forms a rotational fit with the lower cover plate through a bearing.

9. The device for injecting pellet feed into a hydraulic conveying pipe system according to claim 1 or 8, characterized in that: The three accommodating cavities of the rotor assembly all have an upper opening and a lower opening; the rotor assembly is equipped with sealing rings on the upper and lower sides of the upper opening and on the upper and lower sides of the lower opening, and the sealing ring forms an incomplete sealing fit with the stator housing. The stator housing is provided with a first water leakage port on the upper and lower sides of the upper opening of the accommodating cavity and on the upper and lower sides of the lower opening of the accommodating cavity.

10. The device for injecting pellet feed into a hydraulic conveying pipe system according to claim 9, characterized in that: The stator shell is provided with a second water leakage port at the same level as the lower opening of the accommodating cavity, and the second water leakage port is arranged between the feed discharge group and the feed filling group and between the feed discharge group and the water drainage group; the stator shell is provided with a third water leakage port at the same level as the upper opening of the accommodating cavity, and the third water leakage port is arranged between the feed discharge group and the feed filling group and between the feed discharge group and the water drainage group.

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