Connecting device capable of conveniently adjusting flow and flow direction

Abstract

The utility model discloses a connecting device convenient to adjust flow and flow direction, which comprises a lower shell and an upper shell, a second discharge port and an upper support seat are communicated on the upper shell, a knob is inserted on the upper shell, a connecting disc is arranged at the insertion end of the knob, and a shifting block is arranged on the connecting disc; an adjusting assembly is arranged in the lower shell and comprises an elastically-arranged upper valve element and a lower supporting base elastically connected with the upper valve element, the lower supporting base abuts against the upper supporting base, one end of the upper valve element is attached to the shifting block, and the other end of the upper valve element penetrates out of the lower supporting base and is connected with the lower valve element in a sleeved mode. The adjusting assemblies connected with the shifting blocks in the attached mode are arranged in the upper shell and the lower shell, the rotary knobs drive the shifting blocks to rotate and synchronously drive the adjusting assemblies to move so that the opening and closing states of the two discharging ports can be adjusted, flow direction control can be achieved through single opening and closing, flow dividing control can be achieved through two-way opening, the using structure is simplified, and using is flexible.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle pipelines, in particular to a connecting device that is convenient for adjusting flow rate and flow direction. Background Art

[0002] At present, the automobile piping system needs to dissipate heat and cool down the system in time to control the flow of fluid medium to different pipeline branches under different temperature conditions, especially when the temperature of the fluid medium rises during use. The main method is to add a thermostat component. Since it is set in the flow direction of a pipeline, the temperature of the fluid medium rises. Even if it circulates, the efficiency of the thermostat will be greatly reduced due to insufficient heat dissipation. In addition, due to the unstable temperature control factor, the flow rate of the fluid medium is not stable while adjusting the flow direction. Utility Model Content

[0003] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the utility model is to provide a connection device which is convenient for adjusting the flow direction and can stably adjust the flow rate and is convenient for adjusting the flow direction.

[0004] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a connecting device that is convenient for adjusting flow rate and flow direction, including a lower shell body provided with a feed port and a first discharge port and an upper shell body sleeved with the lower shell body, the upper shell body is connected to a second discharge port and sleeved with an upper support seat connected to the second discharge port, a knob is inserted into the upper shell body, the insertion end of the knob is provided with a connecting disk that fits with the inner wall of the upper shell body, and a dial block is provided on the connecting disk; an adjusting component is provided in the lower shell body, the adjusting component includes an upper valve core that is elastically provided to fit with the inner side wall of the upper support seat and a lower support seat that is elastically connected to the upper valve core, the lower support seat is abutted against the upper support seat, one end of the upper valve core is fitted with the dial block, and the other end passes through the lower support seat and is sleeved with the lower valve core for blocking the first discharge port.

[0005] With the above structure, a sleeved upper shell and a lower shell are provided to ensure the sealing of the installation, and only an adjusting component that is closely connected to the shift block is provided in the internal cavity formed by the sleeve connection of the two shells, which greatly simplifies the structure and thus reduces the weight; an upper valve core is provided to block the second discharge port, and a shift block connected to the knob is provided, and the shift block is used to drive the fitted upper valve core to move and open the second discharge port, and simultaneously drive the lower valve core to move and block the first discharge port, so as to achieve the purpose of regulating the flow direction; wherein, the shift block is closely arranged with the upper valve core, and the movement process of driving the upper valve core is also gradually moved away, and the rotation of the knob is stopped during the movement process, so that the state of opening the first discharge port and the second discharge port at the same time can be achieved, and the opening size of the second discharge port can be controlled according to the moving position of the shift block, and the flow control in a single direction can be achieved due to the formation of diversion of the two discharge ports, and the structure is simple and compact, and the operation is convenient.

[0006] In order to better ensure the installation sealing and simplify the structure, preferably, a first boss is arranged around one side of the outer side wall of the lower shell, and a first step hole is arranged on one side of the upper shell. One end of the lower shell extends into the large hole end of the first step hole, and the end face of the large hole end of the first step hole abuts against the end face of the corresponding end of the first boss, and the end face of the extending end of the lower shell abuts against the step face, thereby realizing the sleeve connection between the upper shell and the lower shell.

[0007] In order to simplify the structure and facilitate installation, preferably, a conical surface is provided at the small hole end of the first step hole, a second step hole is provided on one side of the upper support seat, and a conical section with a larger outside and a smaller inside is provided at the position corresponding to the conical surface on the other side. When the upper support seat is extended into the upper shell, the step surface of the second step hole abuts against the end face of the corresponding end of the connecting plate to limit the position, and the outer wall of the conical section is in contact with the conical surface.

[0008] In order to simplify the structure for ease of use, preferably, two shift blocks are symmetrically provided on the connecting disk, and two arc-shaped notches are symmetrically provided on the upper valve core at positions corresponding to the two shift blocks, and a rounded protrusion is provided between the two arc-shaped notches, and the shift blocks at the corresponding ends are placed in the arc-shaped notches, and the protruding parts of the rounded protrusions abut against the corresponding end faces of the connecting disk, and the outer edge walls of the shift blocks are in contact with the outer side walls of the arc-shaped notches.

[0009] In order to simplify the structure and facilitate installation, preferably, the lower support seat includes a positioning ring and a fixed plate connected by a support plate, a connecting rod passing through the fixed plate is provided on the upper valve core, a compression spring is sleeved on the outer side of the connecting rod, one end of the compression spring abuts against the fixed plate and is sleeved on the outer side wall of the second boss fixedly connected to the fixed plate, and the other side of the compression spring abuts against the upper valve core; a guide groove is provided on the fixed plate at the position corresponding to the penetration of the connecting rod, and a guide block is provided at the position on the connecting rod corresponding to the guide groove, and the guide block extends into the guide groove.

[0010] In order to facilitate the installation and limiting of the lower support seat, preferably, a third step hole is provided in the lower shell body, a limit groove connected to the step surface is provided on the hole wall of the small hole end of the third step hole, a limit block is provided on the positioning ring, and a clearance groove is provided at the position corresponding to the limit block on the upper support seat; when the lower support seat is placed in the lower shell body, the positioning ring overlaps the step surface of the third step hole, the outer end face of the positioning ring abuts against the end face of the corresponding end of the upper valve core, the limit block is placed in the limit groove and the clearance groove cover is provided on the outer side of the limit block to facilitate the positioning and installation of the lower support seat.

[0011] To facilitate the installation of the lower valve core, preferably, an annular groove is provided at the protruding end of the connecting rod, a backstop spring is embedded in the annular groove, the lower valve core is sleeved on the outer wall of the protruding end of the connecting rod, an embedding groove is provided in the middle part of the lower valve core, a backstop ring sleeved on the outer side of the connecting rod is provided in the embedding groove, the outer wall of the backstop ring abuts against the outer wall of the fixed plate, and the outer wall of the lower valve core abuts against the inner wall of the backstop spring.

[0012] In order to ensure the sealing of the lower valve core in the blocking position, preferably, a first placement groove is provided around the inner wall of the lower valve core corresponding to the position where the connecting rod is passed through, an inner sealing ring is provided in the first placement groove, and the outer wall of the inner sealing ring is in contact with the outer wall of the connecting rod; a second placement groove is provided around the outer wall of the lower valve core, and a first outer sealing ring is provided in the second placement groove.

[0013] In order to ensure the sealing of the upper valve core and the upper support seat in the blocking position, preferably, an annular groove for embedding a second outer sealing ring is provided on the outer wall of the upper valve core, and the outer wall of the second outer sealing ring is in contact with the hole wall of the small hole end of the second step hole; an annular groove for embedding a third outer sealing ring is provided on the outer wall of the upper support seat, and the outer wall of the third outer sealing ring is in contact with the inner wall of the upper shell body.

[0014] In order to better limit the movement of the lower valve core, preferably, a boss surface is provided on the inner side of the lower shell body at the feed end position corresponding to the first discharge port, and when the lower valve core moves downward, the outer side wall of the lower valve core abuts against the boss surface for limiting the position.

[0015] Beneficial effects: The utility model provides an adjustment component that is closely connected to the shift block in the upper and lower shells, and a knob drives the shift block to rotate, and synchronously drives the adjustment component to move, so as to adjust the opening and closing states of the two discharge ports. It can realize flow direction control by single opening and closing, and diversion control by two-way opening, which simplifies the use structure and is flexible to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 It is an exploded view of the utility model.

[0018] Figure 2 It is a schematic diagram of the structure of the upper shell.

[0019] Figure 3 It is a schematic diagram of the structure of the lower shell.

[0020] Figure 4 It is a structural schematic diagram of the upper support seat.

[0021] Figure 5 It is a schematic diagram of the structure of the knob and the dial block.

[0022] Figure 6 It is a structural schematic diagram of the upper valve core.

[0023] Figure 7 It is a structural schematic diagram of the lower support seat.

[0024] Figure 8 for Figure 7 Top view of the .

[0025] Fig. 9 It is a structural schematic diagram of the lower valve core.

[0026] Fig.10 It is a schematic diagram of the installation structure of the utility model.

[0027] Fig.11 This is a usage state diagram of the utility model.

[0028] The meanings of the symbols in the accompanying drawings are:

[0029] Lower shell-1; feed port-10; first discharge port-11; first step hole-13;

[0030] Upper shell-2; second step hole-20; second discharge port-21; upper support seat-22; clearance groove-221; first boss-23; third step hole-24; limit groove-241; third outer sealing ring-25; boss surface-26

[0031] Support plate-30; limit block-301; positioning ring-31; fixing plate-32; guide groove-321; second boss-34;

[0032] Knob-4; connecting plate-40; dial block-41; upper valve core-5; connecting rod-50; guide block-501; compression spring-51; retaining spring-52; second outer sealing ring-53;

[0033] Lower valve core-6; inner sealing ring-60; first outer sealing ring-61; check ring-7; sealing ring-8. DETAILED DESCRIPTION

[0034] Depend on Figures 1 to 11 As shown, the utility model includes a lower shell body 1 provided with a feed port 10 and a first discharge port 11, and an upper shell body 2 sleeved with the lower shell body 1, the upper shell body 2 is connected with a second discharge port 21 and sleeved with an upper support seat 22 connected with the second discharge port 21, a knob 4 is inserted into the upper shell body 2, the insertion end of the knob 4 is provided with a connecting disk 40 which fits with the inner wall of the upper shell body 2, and a shift block 41 is provided on the connecting disk 40; an adjusting component is provided in the lower shell body 1, the adjusting component includes an upper valve core 5 which is elastically provided to fit with the inner side wall of the upper support seat 22, and a lower support seat elastically connected to the upper valve core 5, the lower support seat is abutted against the upper support seat 22, one end of the upper valve core 5 is fitted with the shift block 41, and the other end passes through the lower support seat and is sleeved with the lower valve core 6 for blocking the first discharge port 11.

[0035] Specifically, a first boss 23 is provided around one side of the outer wall of the lower shell 1, and a first step hole 13 is provided on one side of the upper shell 2. One end of the lower shell 1 extends into the large hole end of the first step hole 13, and the end face of the large hole end of the first step hole 13 abuts against the end face of the corresponding end of the first boss 23, and the end face of the extending end of the lower shell 1 abuts against the step face, thereby realizing the sleeve connection between the upper shell 2 and the lower shell 1.

[0036] A conical surface is provided at the small hole end of the first step hole 13, a second step hole 20 is provided on one side of the upper support seat 22, and a conical section with a larger outside and a smaller inside is provided at the position corresponding to the conical surface on the other side. When the upper support seat 22 extends into the upper shell body 2, the step surface of the second step hole 20 abuts and limits the end surface of the corresponding end of the connecting disk 40, and the outer side wall of the conical section position fits with the conical surface; two shift blocks 41 are symmetrically provided on the connecting disk 40, and two arc-shaped notches are symmetrically provided at the positions corresponding to the two shift blocks 41 on the upper valve core 5, and a rounded protrusion is connected between the two arc-shaped notches, and the shift blocks 41 at the corresponding ends are placed in the arc-shaped notches, the protruding parts of the rounded protrusions abut against the corresponding end surfaces of the connecting disk 40, and the outer edge wall of the shift block 41 fits with the outer side wall of the arc-shaped notch.

[0037] The lower support seat includes a positioning ring 31 and a fixed plate 32 connected by a support plate 30, a connecting rod 50 passing through the fixed plate 32 is provided on the upper valve core 5, a compression spring 51 is sleeved on the outer side of the connecting rod 50, one end of the compression spring 51 abuts against the fixed plate 32 and is sleeved on the outer side wall of the second boss 34 fixedly connected to the fixed plate 32, and the other side of the compression spring 51 abuts against the upper valve core 5; a guide groove 321 is provided on the fixed plate 32 at a position corresponding to the penetration position of the connecting rod 50, and a guide block 501 is provided at a position on the connecting rod 50 corresponding to the guide groove 321, and the guide block 501 extends into the guide groove 321.

[0038] A third step hole 24 is provided in the lower shell body 1, a limit groove 241 connected to the step surface is provided on the hole wall of the small hole end of the third step hole 24, a limit block 301 is provided on the positioning ring 31, and a clearance groove 221 is provided at the position corresponding to the limit block 301 on the upper support seat 22; when the lower support seat is placed in the lower shell body 1, the positioning ring 31 overlaps the step surface of the third step hole 24, the outer end face of the positioning ring 31 abuts against the end face of the corresponding end of the upper valve core 5, the limit block 301 is placed in the limit groove 241 and the clearance groove 221 is covered on the outer side of the limit block 301 to position and install the lower support seat.

[0039] An annular groove is provided at the protruding end of the connecting rod 50, and a backstop spring 52 is embedded in the annular groove. The lower valve core 6 is sleeved on the outer wall of the protruding end of the connecting rod 50. An embedding groove is provided in the middle of the lower valve core 6, and a backstop ring 7 sleeved on the outside of the connecting rod 50 is provided in the embedding groove. The outer wall of the backstop ring 7 abuts against the outer wall of the fixing plate 32, and the outer wall of the lower valve core 6 abuts against the inner wall of the backstop spring 52.

[0040] A first placement groove is provided around the inner wall of the lower valve core 6 at the position where the connecting rod 50 is inserted, and an inner sealing ring 60 is provided in the first placement groove, and the outer wall of the inner sealing ring 60 is in contact with the outer wall of the connecting rod 50; a second placement groove is provided around the outer wall of the lower valve core 6, and a first outer sealing ring 61 is provided in the second placement groove; an annular groove for embedding a second outer sealing ring 53 is provided on the outer wall of the upper valve core 5, and the outer wall of the second outer sealing ring 53 is in contact with the hole wall of the small hole end of the second step hole 20; an annular groove for embedding a third outer sealing ring 25 is provided on the outer wall of the upper support seat 22, and the outer wall of the third outer sealing ring 25 is in contact with the inner wall of the upper shell body 2.

[0041] A boss surface 26 is provided on the inner side of the lower shell 1 at a position corresponding to the feeding end of the first discharge port 11 . When the lower valve core 6 moves downward, the outer side wall of the lower valve core 6 abuts against the boss surface 26 to limit the position.

[0042] The operating principle of the utility model is as follows:

[0043] Depend on Figure 1 , Figure 2 , Figure 5 and Fig.10 As shown, during installation, first, the knob 4 is passed through the upper shell body 2, the connecting disk 40 is abutted against the shell bottom of the upper shell body 2, and then the upper support seat 22 is placed, and the step surface of the second step hole 20 is abutted against the end surface of the corresponding end of the connecting disk 40 to limit the position, and the outer side wall of the third outer sealing ring 25 is fitted with the shell inner wall of the upper shell body 2; then the upper valve core 5 is placed in the upper support seat 22, and the shift block 41 at the corresponding end is placed in the arc-shaped notch, the protruding portion with rounded protrusions is abutted against the corresponding end surface of the connecting disk 40, and the outer edge wall of the shift block 41 is fitted with the outer side wall of the arc-shaped notch, and the outer side wall of the second outer sealing ring 53 is fitted with the hole wall of the small hole end of the second step hole 20. In this way, the shift block 41 blocks the feeding position of the second discharge port 21. At the same time, the hole wall of the second step hole 20 and the shell inner wall of the upper shell body 2 are closed by the sealing ring, and no liquid can flow out.

[0044] Then, if Figure 1 , Figure 3 , Figure 4 , Figures 6 to 10 As shown, the lower support seat is placed in abutment with the upper support seat 22, and at the same time, the compression spring 51 is sleeved on the outside of the connecting rod 50, and one end of the compression spring 51 is sleeved on the outer side wall of the second boss 34, the connecting rod 50 passes through the fixed plate 32 and the guide block 501 extends into the guide groove 321, the passing end of the connecting rod 50 is provided with an annular groove, and a back-stop spring 52 is embedded in the annular groove, the lower valve core 6 is sleeved on the outer side wall of the passing end of the connecting rod 50, the middle part of the lower valve core 6 is provided with an embedding groove, and a back-stop ring 7 sleeved on the outside of the connecting rod 50 is provided in the embedding groove, the outer side wall of the back-stop ring 7 is abutted with the outer side wall of the fixed plate 32, and the outer side wall of the lower valve core 6 is abutted with the inner side wall of the back-stop spring 52.

[0045] Finally, the lower support seat is placed in the lower shell body 1. At this time, the positioning ring 31 overlaps the step surface of the third step hole 24, and the outer end surface of the positioning ring 31 abuts against the end surface of the corresponding end of the upper valve core 5. The limit block 301 is placed in the limit groove 241 and the allowance groove 221 is covered on the outer side of the limit block 301 to position and install the lower support seat, while ensuring that the upper support seat 22 does not move when the knob 4 is rotated, avoiding rotation interference of the shift block 41; at the same time, one end of the lower shell body 1 is extended into the large hole end of the first step hole 13, and the end surface of the large hole end of the first step hole 13 abuts against the end surface of the corresponding end of the first boss 23, and the end surface of the extended end of the lower shell body 1 abuts against the step surface of the first step hole 13, so as to realize the sleeve connection between the upper shell body 2 and the lower shell body 1. At the same time, the feed port 10 and the first discharge port 11 are in a connected state, and the second discharge port 21 is blocked.

[0046] When using, Fig.10 and Fig.11 As shown, in the initial state, the feed port 10 and the first discharge port 11 are connected, and the second discharge port 21 is blocked. When the flow direction needs to be changed, the knob 4 is twisted to drive the connecting plate 40 and the shift block 41 to rotate at the same time. The outer wall of the shift block 41 moves along the outer wall of the arc-shaped notch and begins to squeeze the arc-shaped notch at the high end of the arc, and moves the upper valve core 5 toward the first discharge port 11. As the upper valve core 5 moves, the outer wall of the second outer sealing ring 53 leaves the hole wall of the small hole end of the second step hole 20, and the upper valve core 5 continues to move. The guide block 501 moves in The first outer sealing ring 61 abuts against the inner wall of the lower shell body 1, and the first discharge port 11 is blocked. At this time, the outer wall of the shift block 41 fits with the rounded protrusion connected to the two arc-shaped notches, and the shift block 41 no longer blocks the arc-shaped notches. A through hole connected to the second discharge port 21 is provided at the position of the arc-shaped notch on one side of the upper support seat 22. At this time, the second discharge port 21 is opened, and the fluid is discharged through the second discharge port 21.

[0047] If it is necessary to open the first discharge port 11 again, since the two arc-shaped notches are symmetrically arranged and are connected to the rounded protrusions, and the arc structures on both sides are the same, it is only necessary to continue to rotate the knob forward or reversely. Under the elastic force of the compression spring 51, as the contact position between the arc-shaped notch and the shift block 41 changes, the upper valve core 5 gradually moves toward the position of the second discharge port 21. When the shift block 41 moves to the lowest end position of the arc-shaped notch, the second discharge port 21 is closed, and the fluid is discharged through the first discharge port 11 at this time.

[0048] It should be noted that in the process of closing the first outlet 11, when the second outer sealing ring 53 leaves the small hole end of the second step hole 20, the lower valve core 6 has not yet moved into place, so at this time there is a state where the two outlets are opened at the same time. If the knob 4 is kept stationary, under the action of pressure, a part of the fluid will gradually flow out at the second outlet 21, thereby forming a diversion state. According to the rotation angle of the knob 4, the diversion flow rate can also be controlled.

[0049] In addition, at the place where the knob 4 is inserted, an annular boss is provided on the inner wall of the upper shell 2, and the annular boss and the inner wall of the shell together form a groove, and a sealing ring 8 is also provided in the groove. The knob 4 passes through the sealing ring 8 and emerges from the upper shell 2, and the end faces of the corresponding ends between the annular boss and the connecting plate 40 are abutted to limit the position.

[0050] In addition, in order to ensure the reliability of sealing, the sleeve joint between the upper shell 2 and the lower shell 1 should be welded on the outside of the sleeve joint to better prevent leakage caused by loose sleeve joint.

Claims

1. A connection device that is convenient for adjusting flow rate and flow direction, characterized in that: The invention comprises a lower shell (1) provided with a material inlet (10) and a first material outlet (11), and an upper shell (2) sleeved with the lower shell (1), wherein the upper shell (2) is provided with a second material outlet (21) in communication with the upper shell (2) and sleeved with an upper support seat (22) in communication with the second material outlet (21), and a knob (4) is inserted into the upper shell (2), and the insertion end of the knob (4) is provided with a connection plate (40) which is in contact with the inner wall of the upper shell (2), and the connection plate (40) is provided with a connection plate (40) which is in contact with the inner wall of the upper shell (2). ) is provided with a shift block (41); an adjusting assembly is provided in the lower shell body (1), and the adjusting assembly includes an upper valve core (5) elastically provided to fit with the inner wall of the upper support seat (22) and a lower support seat elastically connected to the upper valve core (5), the lower support seat is arranged in abutment with the upper support seat (22), one end of the upper valve core (5) is fitted with the shift block (41), and the other end passes through the lower support seat and is sleeved with the lower valve core (6) for blocking the first discharge port (11).

2. A connection device for adjusting flow rate and flow direction as claimed in claim 1, characterized in that: A first boss (23) is arranged around one side of the outer wall of the lower shell (1), and a first step hole (13) is arranged on one side of the upper shell (2). One end of the lower shell (1) extends into the large hole end of the first step hole (13), and the end surface of the large hole end of the first step hole (13) abuts against the end surface of the corresponding end of the first boss (23), and the end surface of the extending end of the lower shell (1) abuts against the step surface, thereby realizing the sleeve connection between the upper shell (2) and the lower shell (1).

3. A connection device for adjusting flow rate and flow direction as claimed in claim 2, characterized in that: A conical surface is provided at the small hole end of the first step hole (13), a second step hole (20) is provided on one side of the upper support seat (22), and a conical section with a larger outer portion and a smaller inner portion is provided at a position corresponding to the conical surface on the other side. When the upper support seat (22) is extended into the upper shell body (2), the step surface of the second step hole (20) abuts against the end surface of the corresponding end of the connecting plate (40) to limit the position, and the outer side wall of the conical section is in contact with the conical surface.

4. A connection device for adjusting flow rate and flow direction as claimed in claim 2, characterized in that: Two shift blocks (41) are symmetrically arranged on the connection disk (40), and two arc-shaped notches are symmetrically arranged on the upper valve core (5) at positions corresponding to the two shift blocks (41). A rounded protrusion is arranged between the two arc-shaped notches, and the shift blocks (41) at the corresponding ends are placed in the arc-shaped notches. The protruding parts of the rounded protrusions abut against the corresponding end faces of the connection disk (40), and the outer edge walls of the shift blocks (41) are in contact with the outer side walls of the arc-shaped notches.

5. A connection device for adjusting flow rate and flow direction as claimed in claim 2, characterized in that: The lower support seat comprises a positioning ring (31) and a fixing plate (32) connected by a support plate (30); a connecting rod (50) penetrating the fixing plate (32) is provided on the upper valve core (5); a compression spring (51) is sleeved on the outer side of the connecting rod (50); one end of the compression spring (51) abuts against the fixing plate (32) and sleeved on the outer side wall of a second boss (34) fixedly connected to the fixing plate (32); the other side of the compression spring (51) abuts against the upper valve core (5); a guide groove (321) is provided on the fixing plate (32) at a position corresponding to the penetrating position of the connecting rod (50); a guide block (501) is provided on the connecting rod (50) at a position corresponding to the guide groove (321); the guide block (501) extends into the guide groove (321).

6. A connection device for adjusting flow rate and flow direction as claimed in claim 5, characterized in that: A third step hole (24) is provided in the lower shell (1), a limiting groove (241) communicating with the step surface is provided on the hole wall of the small hole end of the third step hole (24), a limiting block (301) is provided on the positioning ring (31), and a clearance groove (221) is provided at a position corresponding to the limiting block (301) on the upper support seat (22); when the lower support seat is placed in the lower shell (1), the positioning ring (31) overlaps the step surface of the third step hole (24), the outer end surface of the positioning ring (31) abuts against the end surface of the corresponding end of the upper valve core (5), the limiting block (301) is placed in the limiting groove (241) and the clearance groove (221) is covered on the outer side of the limiting block (301) so as to position and install the lower support seat.

7. A connection device for adjusting flow rate and flow direction as claimed in claim 5, characterized in that: An annular groove is provided at the protruding end of the connecting rod (50), and a backstop spring (52) is embedded in the annular groove. The lower valve core (6) is sleeved on the outer wall of the protruding end of the connecting rod (50). An embedding groove is provided in the middle of the lower valve core (6), and a backstop ring (7) sleeved on the outer side of the connecting rod (50) is provided in the embedding groove. The outer wall of the backstop ring (7) abuts against the outer wall of the fixing plate (32), and the outer wall of the lower valve core (6) abuts against the inner wall of the backstop spring (52).

8. A connection device for adjusting flow rate and flow direction as claimed in claim 7, characterized in that: A first placement groove is arranged around the inner wall of the lower valve core (6) at a position where the connecting rod (50) is inserted, an inner sealing ring (60) is arranged in the first placement groove, and an outer wall of the inner sealing ring (60) is in contact with the outer wall of the connecting rod (50); a second placement groove is arranged around the outer wall of the lower valve core (6), and a first outer sealing ring (61) is arranged in the second placement groove.

9. A connection device for adjusting flow rate and flow direction as claimed in claim 3, characterized in that: An annular groove for embedding a second outer sealing ring (53) is provided on the outer wall of the upper valve core (5), and the outer wall of the second outer sealing ring (53) is in contact with the hole wall of the small hole end of the second step hole (20); an annular groove for embedding a third outer sealing ring (25) is provided on the outer wall of the upper support seat (22), and the outer wall of the third outer sealing ring (25) is in contact with the inner wall of the upper shell body (2).

10. A connection device for adjusting flow rate and flow direction as claimed in claim 1, characterized in that: A boss surface (26) is provided on the inner side of the lower shell (1) at a position corresponding to the feeding end of the first discharge port (11); when the lower valve core (6) moves downward, the outer side wall of the lower valve core (6) abuts against the boss surface (26) to limit the position.

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