Hard sealing grease injection valve

Abstract

The invention discloses a hard sealing grease injection valve which comprises a connecting valve body and a transmission assembly. The connecting valve body comprises a first valve body and a second valve body, the first valve body is fixed at the upper end of the second valve body, a supporting base plate is fixed in the second valve body, and the supporting base plate is connected with a ball through a first spring; the transmission assembly comprises a guide-out device, a synchronization device and a storage device; the guiding-out device comprises a protective cover, the protective cover is installed at the upper end of the first valve body, the center of the protective cover is slidably connected with an extrusion rod, a supporting top plate is fixed to the upper end of the extrusion rod, the two sides of a supporting bottom plate are each connected with a special-shaped support, and transmission racks are fixed to the upper ends of the special-shaped supports. The storage device comprises a collection cavity; the synchronizing device comprises two transmission gears, the transmission gears are meshed with the transmission racks, the two ends of each transmission gear are each provided with a winding wheel, each winding wheel is connected with a connecting rope, and the lower ends of the connecting ropes are jointly connected to the displacement transverse frame. According to the invention, the functions of non-pressure feeding and intermittent grease injection can be realized.

Description

Technical Field

[0001] The invention relates to the technical field of grease injection valves, in particular to a hard-sealed grease injection valve. Background Art

[0002] A grease injection valve is a valve for adding grease. The internal spring mechanism can seal the interior of the valve body with a sealing component to achieve the function of sealing the interior of the valve body. At the same time, the setting of the sealing component can prevent grease from flowing back. Therefore, the grease injection valve is suitable for mechanical components that need to be lubricated frequently.

[0003] Hard sealing is a modern sealing method. It is achieved by butting two mechanical components together until they are in contact and sealed. This allows the two to be sealed. At the same time, hard sealing can prevent the mechanical components from loosening.

[0004] At present, when using the grease injection valves on the market, since they need to rely on pressure to push the grease during grease injection, the grease cannot be injected into the valve body when the pressure is insufficient. At the same time, the existing grease injection valves need to rely on a pressure gun to achieve feeding when adding grease, making the existing grease injection valves unable to perform the functions of pressure-free feeding and intermittent grease injection.

[0005] Therefore, there is an urgent need in the art for a hard-sealed grease injection valve to solve the above-mentioned problems. Summary of the invention

[0006] The purpose of the present invention is to provide a hard-sealed grease injection valve to solve the problems existing in the above-mentioned prior art and to achieve the functions of pressure-free feeding and intermittent grease injection.

[0007] To achieve the above object, the present invention provides the following solutions:

[0008] The present invention discloses a hard-sealed grease injection valve, comprising a connecting valve body and a transmission component, wherein the liquid outlet of the connecting valve body is used to connect to a delivery pipeline, and the oil inlet of the connecting valve body is used to connect to the transmission component;

[0009] The connecting valve body comprises a first valve body and a second valve body, the first valve body is fixed to the upper end of the second valve body, the interior of the first valve body is connected to the interior of the second valve body, the second valve body is connected to the delivery pipeline, a support pad is fixed in the second valve body, a round ball is connected to the upper end of the support pad through a first spring, the round ball can be used to block the communication port between the first valve body and the second valve body, a valve body liquid outlet hole is provided on the support pad, and the second valve body is connected to the delivery pipeline through the valve body liquid outlet hole;

[0010] The transmission assembly includes a guide device, a synchronization device and a storage device;

[0011] The outlet device includes a protective cover, which is mounted on the upper end of the first valve body. The center of the protective cover is slidably connected to an extrusion rod, which can abut against the ball when moving downward. A support top plate is fixed to the upper end of the extrusion rod. A driving device is provided above the support top plate. The driving device is used to drive the support top plate to move up and down. A special-shaped bracket is connected to each of the two sides of the support top plate, and a transmission rack is fixed to the upper end of the special-shaped bracket.

[0012] The receiving device comprises a collecting cavity, and two transfer pipes are installed at the lower end of the collecting cavity, the liquid inlet ends of the two transfer pipes are connected to the inside of the collecting cavity, and the liquid outlet ends of the two transfer pipes are connected to the liquid inlet of the connecting valve body;

[0013] The synchronization device includes two transmission gears, which are respectively meshed with the two transmission racks. A winding wheel is installed at both ends of the transmission gear. Each winding wheel is connected to a connecting rope. The lower ends of all the connecting ropes are commonly connected to a displacement cross frame. A sealed rubber plug is fixed at both ends of the lower surface of the displacement cross frame. The sealed rubber plug can be used to block the liquid inlet end of the transfer pipeline.

[0014] Preferably, the driving device comprises a servo motor, the servo motor is mounted at the lower end of the collecting chamber, a rotating disc is provided on the output shaft of the servo motor, a limiting guide rod is provided on the rotating disc, an alignment convex plate is fixed at both ends of the upper surface of the supporting top plate, and the limiting guide rod can abut against the alignment convex plate;

[0015] The driving device further comprises two second springs, and the two second springs are both arranged between the protective cover and the supporting top plate.

[0016] Preferably, both sides of the lower end of the limiting guide rod are respectively provided with 45° inclined surfaces.

[0017] Preferably, a guide column is respectively provided on both sides of the lower end of the supporting top plate, a first guide through hole is respectively provided on both sides of the protective cover, and the two guide columns pass through the two first guide through holes respectively.

[0018] Preferably, a top bracket is installed on the top of the collecting chamber, and a sealing top cover is installed on both sides of the top bracket.

[0019] Preferably, a filling port is provided at the center of the top bracket, and a sealing sleeve can be covered on the filling port. The filling port is located above the displacement cross frame, and a third spring is provided on both sides of the lower surface of the top bracket, and one end of the third spring away from the top bracket is fixedly connected to the upper surface of the displacement cross frame.

[0020] Preferably, a guide vertical plate is respectively provided on both sides of the upper surface of the displacement cross frame, and two second guide through holes are provided on the top bracket, and the two guide vertical plates pass through the two second guide through holes respectively.

[0021] Preferably, a supporting base is fixed on each of the sealing top covers, and each of the supporting bases is rotatably connected to one of the transmission gears and the two winding wheels.

[0022] Preferably, each of the sealing top covers is provided with two wire passing holes, through which the connecting rope passes.

[0023] Preferably, the lower surface of the second valve body is provided with an external thread, the delivery pipeline is provided with an internal thread, and the lower end of the second valve body is threadedly connected to the delivery pipeline;

[0024] A counter-rotating round cover is also installed on the outer wall of the second valve body, and a sealing gasket is provided on the lower surface of the counter-rotating round cover.

[0025] Compared with the prior art, the present invention has achieved the following technical effects:

[0026] The present invention realizes the hard seal of the connected valve body through the transmission component. In actual operation, the driving device is started to drive the extrusion rod to move downward. At the same time, the extrusion rod can squeeze the ball downward, so that there is no need to apply pressure to the inside of the first valve body to drive the ball downward. In addition, when the ball moves downward, the grease inside the first valve body can flow from the first valve body into the inside of the second valve body, so that the grease can flow into the inside of the device through the delivery pipe. In addition, when the extrusion rod rebounds upward, the ball can be fastened to the first valve body at the same time to prevent the grease from flowing back upward, thereby completing the intermittent feeding of the grease.

[0027] Furthermore, the present invention squeezes the ball downward through the squeezing rod, so that the first valve body can communicate with the second valve body normally, so that the grease inside the collection cavity can flow into the interior of the second valve body through the transfer pipe and the first valve body, and at the same time, the grease can flow through the valve body liquid outlet hole on the outer ring of the supporting pad, so that the grease can normally flow from the interior of the second valve body into the interior of the delivery pipe, completing the work of pressure-free grease feeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1This is a schematic diagram of the structure of a hard-sealed grease injection valve according to an embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the internal structure of the hard-sealed grease injection valve connected to the valve body in an embodiment of the present invention;

[0031] Figure 3 It is a schematic diagram of the three-dimensional structure of the transmission component in the hard-sealed grease injection valve according to an embodiment of the present invention from a front perspective;

[0032] Figure 4 It is a schematic diagram of the three-dimensional structure from the bottom end perspective of the transmission component in the hard-sealed grease injection valve according to an embodiment of the present invention;

[0033] Figure 5 It is a schematic diagram of the three-dimensional structure from the front perspective of the outlet device in the hard-sealed grease injection valve according to an embodiment of the present invention;

[0034] Figure 6 It is a schematic diagram of the three-dimensional structure from the front perspective of the synchronization device in the hard-sealed grease injection valve according to an embodiment of the present invention;

[0035] Figure 7 It is a partial cross-sectional schematic diagram of a receiving device in a hard-sealed grease injection valve according to an embodiment of the present invention;

[0036] Figure 8 This is a schematic structural diagram of an alignment round cover and a sealing gasket in a hard-sealed grease injection valve according to an embodiment of the present invention;

[0037] In the figure: 1-connecting valve body; 2-transmission assembly; 3-transmission pipeline; 4-transfer pipeline; 5-first valve body; 6-round ball; 7-first spring; 8-support pad; 9-second valve body; 10-export device; 11-synchronizing device; 12-storage device; 13-transmission rack; 14-special-shaped bracket; 15-second spring; 16-guide column; 17-extrusion rod; 18-protective cover; 19-alignment convex plate; 20- Support top plate; 21-transmission gear; 22-winding wheel; 23-support base frame; 24-guide vertical plate; 25-connecting rope; 26-displacement cross frame; 27-sealed rubber plug; 28-collecting chamber; 29-top bracket; 30-filling port; 31-sealing sleeve; 32-sealing top cover; 33-third spring; 34-servo motor; 35-rotating disc; 36-limiting guide rod; 37-aligning round cover; 38-sealing gasket. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] The purpose of the present invention is to provide a hard-sealed grease injection valve to solve the problems existing in the above-mentioned prior art and to achieve the functions of pressure-free feeding and intermittent grease injection.

[0040] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0041] like Figure 1-Figure 8 As shown, this embodiment provides a hard-sealed grease injection valve, including a connecting valve body 1 and a transmission component 2, wherein the liquid outlet of the connecting valve body 1 is used to connect to the delivery pipeline 3, and the oil inlet of the connecting valve body 1 is used to connect to the transmission component 2, and the transmission component 2 can not only supply oil to the connecting valve body 1, but also perform a hard sealing effect on it.

[0042] For the specific structure of the connecting valve body 1, such as Figure 2 As shown, the connecting valve body 1 includes a first valve body 5 and a second valve body 9. The first valve body 5 is fixed to the upper end of the second valve body 9. The interior of the first valve body 5 is connected to the interior of the second valve body 9. The first valve body 5 and the second valve body 9 are both cylindrical structures, and the diameter of the second valve body 9 is larger than the diameter of the first valve body 5. The lower end of the second valve body 9 is connected to the conveying pipeline 3. A support pad 8 is fixed to the lower end of the second valve body 9. The upper end of the support pad 8 is connected to a ball 6 through a first spring 7. Of course, if it is inconvenient to directly connect the ball 6 and the first spring 7, an additional mounting plate can be provided. The upper end of the first spring 7 is fixed to the lower surface of the mounting plate, and the ball 6 is fixed to the upper surface of the mounting plate. When the ball 6 is at the highest position, the ball 6 can be used to block the communication port between the first valve body 5 and the second valve body 9, and the communication port is the interface between the first valve body 5 and the second valve body 9. A plurality of valve body liquid outlet holes are arranged at intervals around the outer ring of the support pad 8 , and the interior of the second valve body 9 can be connected to the delivery pipeline 3 through each valve body liquid outlet hole.

[0043] The transmission component 2 includes an export device 10, a synchronization device 11 and a storage device 12. The specific structures of each device are as follows:

[0044] The derivation device 10 is as follows Figure 5As shown, the guide device 10 includes a protective cover 18, which is installed on the upper end of the first valve body 5. The center of the protective cover 18 is slidably connected to the extrusion rod 17, that is, the center of the protective cover 18 is provided with a corresponding through hole for the extrusion rod 17 to pass through. When the extrusion rod 17 moves downward, it can abut against the ball 6 and squeeze the ball 6 to move it downward. A supporting top plate 20 is fixed to the upper end of the extrusion rod 17, and a driving device is provided above the supporting top plate 20, and the driving device is used to drive the supporting top plate 20 to move up and down. A special-shaped bracket 14 is respectively connected to both sides of the supporting top plate 20, and its specific shape is similar to a C-shaped structure. For details, please refer to Figure 5 As shown, a transmission rack 13 is fixed to the upper end of the special-shaped bracket 14.

[0045] The storage device 12 is as follows Figure 7 As shown, the storage device 12 includes a collection cavity 28, which is a cylindrical cavity, and a plurality of vertical slots are arranged at intervals on the outer surface of the side wall, so that the special-shaped bracket 14 can be stuck in the vertical slots for positioning and can slide up and down. Two transfer pipes 4 are installed at the lower end of the collection cavity 28, and the liquid inlet ends of the two transfer pipes 4 can extend upward to the bottom of the collection cavity 28 and communicate with the interior of the collection cavity 28, and the liquid outlet ends of the two transfer pipes 4 are connected to the liquid inlet of the connecting valve body 1 (or the first valve body 5).

[0046] The synchronization device 11 is as follows Figure 6 As shown, the synchronization device 11 includes two transmission gears 21, and the transmission gears 21 are located above the collection chamber 28. The two transmission gears 21 are respectively meshed with two transmission racks 13. A winding wheel 22 is installed at each end of the transmission gear 21, and the two winding wheels 22 and the transmission gear 21 in the middle are coaxially arranged, that is, the three can rotate synchronously. Each winding wheel 22 is connected to a connecting rope 25, and the upper end of the connecting rope 25 is wound around the corresponding winding wheel 22, and the lower ends of all the connecting ropes 25 are connected to the displacement cross frame 26. Figure 6 It can be seen that the displacement cross frame 26 is similar to a "cross" shaped structure, including two connecting cross bars and one connecting vertical bar, the connecting vertical bar is vertically fixed to the two connecting cross bars, wherein the two ends of the connecting cross bar are respectively used to connect the lower ends of a corresponding connecting rope 25 on the two transmission gears 21. A sealed rubber plug 27 is respectively fixed at both ends of the lower surface of the displacement cross frame 26, and when the displacement cross frame 26 moves downward, the sealed rubber plug 27 can be used to block the liquid inlet end of the transfer pipe 4.

[0047] In actual use, the second valve body 9 is first installed to the top of the conveying pipe 3 until the second valve body 9 is placed vertically. Then, grease from the outside can be added to the inside of the collecting chamber 28. When the inside of the conveying pipe 3 needs to be filled with grease, the driving device can be started, and the support top plate 20 and the extrusion rod 17 can be squeezed to move downward at the same time, so that the extrusion rod 17 can squeeze the ball 6 to move downward, so that the ball 6 can be disengaged from the bottom end of the first valve body 5, so that the first valve body 5 can communicate with the second valve body 9. At the same time, when the support top plate 20 moves downward, it can also drive the special-shaped bracket and the transmission rack 13 to move downward at the same time, so that the transmission rack 13 can move downward along the side end of the transmission gear 21, thereby driving the transmission gear 21 and the winding wheel 22 to rotate at the same time, so that the winding wheel 22 can pull the displacement cross frame 26 upward through the connecting rope 25. When the displacement cross frame 26 moves upward, it can drive the sealing rubber plug 27 to be drawn out from the liquid inlet end of the transfer pipe 4, so that the grease inside the collection cavity 28 can flow into the first valve body 5 through the transfer pipe 4. At this time, the ball 6 is separated from the first valve body 5, so that the grease can flow into the second valve body 9, and finally the grease will flow into the delivery pipe 3, completing the grease filling work. Subsequently, the driving device will drive the support top plate 20 to move upward and reset, so that the extrusion rod 17 moves upward, and the elasticity of the first spring 7 will drive the ball 6 to move upward, so that the ball 6 will close the bottom end of the first valve body 5 again to prevent the grease from entering the second valve body 9 again. Subsequently, when the support top plate 20 moves upward, it can drive the transmission rack 13 to move upward along the transmission gear 21, so that the transmission gear 21 can rotate in the opposite direction, so that it can drive the winding wheel 22 to rotate, release the connecting rope 25, and move the displacement cross frame 26 downward until the sealing plug 27 closes the transfer pipe 4 again, thereby preventing excessive grease inside the collection cavity 28 from flowing into the interior of the transfer pipe 4, completing the work of pressure-free and intermittent grease filling.

[0048] In this embodiment, the driving device includes a servo motor 34, which is installed at the lower end of the collecting chamber 28. A rotating disc 35 is provided on the output shaft of the servo motor 34, and a limiting guide rod 36 is provided on the rotating disc 35. In contrast, a positioning convex plate 19 is fixed to both ends of the upper surface of the supporting top plate 20, and the positioning convex plate 19 is a hemispherical protrusion. With the rotation of the servo motor 34, the limiting guide rod 36 can intermittently abut against the positioning convex plate 19, and when the limiting guide rod 36 abuts against the positioning convex plate 19, the supporting top plate 20 and the extrusion rod 17 can be pushed to move downward.

[0049] Furthermore, the driving device further includes two second springs 15, both of which are disposed between the protective cover 18 and the support top plate 20, and are located on both sides therebetween. When the limiting guide rod 36 abuts against the alignment convex plate 19, the support top plate 20 and the extrusion rod 17 move downward, and the second spring 15 is compressed; when the limiting guide rod 36 does not abut against the alignment convex plate 19, the second spring 15 will extend by its own elastic force to push the support top plate 20 and the extrusion rod 17 to move upward.

[0050] In actual use, when the inside of the connecting pipe needs to be filled with grease, the servo motor 34 can be started to drive the rotating disc 35 and the limiting guide rod 36 to rotate. When the rotating disc 35 rotates until the limiting guide rod 36 contacts the alignment convex plate 19, the support top plate 20 and the extrusion rod 17 can be squeezed to move downward at the same time, so that the extrusion rod 17 can squeeze the ball 6 to move downward, so that the ball 6 can be separated from the bottom end of the first valve body 5, so that the first valve body 5 can communicate with the second valve body 9. After the work of filling grease is completed, when the limiting guide rod 36 rotates over the top of the alignment convex plate 19, the elasticity of the second spring 15 will drive the support top plate 20 to move upward and reset, so that the extrusion rod 17 moves upward, and the elasticity of the second spring 15 will drive the support top plate 20 and the extrusion rod 17 to move upward and reset. At the same time, when the extrusion rod 17 moves upward, the elasticity of the first spring 7 will drive the ball 6 to move upward, so that the ball 6 will close the bottom end of the first valve body 5 again to prevent grease from entering the inside of the second valve body 9 again.

[0051] In this embodiment, if Figure 7 As shown, both sides of the lower end of the limiting guide rod 36 are provided with 45° inclined surfaces. The reason for this arrangement is to match the arc structure of the alignment convex plate 19, which can improve the contact smoothness between the limiting guide rod 36 and the alignment convex plate 19 and avoid the occurrence of jamming.

[0052] In this embodiment, if Figure 5 As shown, a guide column 16 is provided on both sides of the lower end of the support top plate 20, and a first guide through hole is provided on both sides of the protective cover 18. The two guide columns 16 pass through the two first guide through holes and are slidably connected thereto. The purpose of this arrangement is to limit the position of the support top plate 20 during the up and down sliding process to avoid the problem of left and right deviation.

[0053] In this embodiment, if Figure 7 As shown, a top bracket 29 is installed at the middle position of the top of the collecting chamber 28, and a sealing top cover 32 is installed on both sides of the top bracket 29. One top bracket 29 and two sealing top covers 32 are used to jointly seal the upper end opening of the collecting chamber 28.

[0054] In this embodiment, a filling port 30 is provided at the center of the top bracket 29, and a sealing sleeve 31 can be covered at the filling port 30. When filling grease into the collection chamber 28, the sealing sleeve 31 is removed, and when not filling, the sealing sleeve 31 is installed to prevent foreign matter from entering. The filling port 30 is located above the displacement cross frame 26, and a third spring 33 is provided on both sides of the lower surface of the top bracket 29, and one end of the third spring 33 away from the top bracket 29 is fixedly connected to the upper surface of the displacement cross frame 26.

[0055] When external grease is filled into the interior of the collection cavity 28 through the filling port 30, the grease will drip onto the displacement frame 26, thereby driving the displacement frame 26 to move downward, thereby pushing the sealing plug 27 to be inserted into the interior of the transfer pipe 4, thereby preventing the grease inside the collection cavity 28 from entering the interior of the transfer pipe 4 in advance.

[0056] In this embodiment, if Figure 6 As shown, a guide vertical plate 24 is provided on both sides of the upper surface of the displacement cross frame 26, and two second guide through holes are provided on the top bracket 29. The two guide vertical plates 24 pass through the two second guide through holes and are slidably connected thereto. The purpose of such a setting is to limit the displacement cross frame 26 to prevent it from deviating left and right during the process of moving up and down.

[0057] In this embodiment, if Figure 6 As shown, a support base 23 is fixed on each sealing top cover 32 , and a transmission gear 21 and two winding wheels 22 are rotatably connected to each support base 23 . The function of the support base 23 is to install the transmission gear 21 and the winding wheel 22 .

[0058] In this embodiment, each sealing top cover 32 is provided with two wire holes, through which the connecting rope 25 passes, and the wire holes also serve to limit the connecting rope 25 to prevent the connecting rope 25 from shaking around during the up and down movement.

[0059] In this embodiment, the lower surface of the second valve body 9 is provided with an external thread, the delivery pipe 3 is provided with an internal thread, and the lower end of the second valve body 9 is threadedly connected to the delivery pipe 3 .

[0060] In addition, if Figure 8 As shown, a counter-circular cover 37 is also installed on the outer wall of the second valve body 9 , and a sealing gasket 38 is provided on the lower surface of the counter-circular cover 37 .

[0061] When the second valve body 9 needs to be installed on the delivery pipe 3, the second valve body 9 can be directly screwed into the top of the delivery pipe 3 until the sealing gasket 38 fits with the top of the delivery pipe 3, thereby preventing leakage between the second valve body 9 and the delivery pipe 3. In addition, the alignment round cover 37 is located above the sealing gasket 38, so that when the second valve body 9 is screwed to the limit position, the alignment round cover 37 can evenly press the sealing gasket 38 to fit tightly with the delivery pipe 3, completing the sealing work of the second valve body 9 and the delivery pipe 3.

[0062] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A hard-sealed grease injection valve, characterized in that: It comprises a connecting valve body (1) and a transmission component (2), wherein the liquid outlet of the connecting valve body (1) is used to connect to a delivery pipeline (3), and the oil inlet of the connecting valve body (1) is used to connect to the transmission component (2); The connecting valve body (1) comprises a first valve body (5) and a second valve body (9), the first valve body (5) is fixed to the upper end of the second valve body (9), the interior of the first valve body (5) and the interior of the second valve body (9) are connected, the second valve body (9) is connected to the delivery pipeline (3), a support pad (8) is fixed inside the second valve body (9), the upper end of the support pad (8) is connected to a ball (6) via a first spring (7), the ball (6) can be used to block the communication port between the first valve body (5) and the second valve body (9), the support pad (8) is provided with a valve body liquid outlet hole, and the second valve body (9) is connected to the delivery pipeline (3) via the valve body liquid outlet hole; The transmission component (2) comprises a guide device (10), a synchronization device (11) and a storage device (12); The outlet device (10) comprises a protective cover (18), the protective cover (18) is mounted on the upper end of the first valve body (5), the center of the protective cover (18) is slidably connected to an extrusion rod (17), the extrusion rod (17) can abut against the ball (6) when moving downward, a support top plate (20) is fixed to the upper end of the extrusion rod (17), a driving device is provided above the support top plate (20), the driving device is used to drive the support top plate (20) to move up and down, and two sides of the support top plate (20) are respectively connected to a special-shaped bracket (14), and a transmission rack (13) is fixed to the upper end of the special-shaped bracket (14); The storage device (12) comprises a collecting cavity (28), two transfer pipes (4) are installed at the lower end of the collecting cavity (28), the liquid inlet ends of the two transfer pipes (4) are connected to the interior of the collecting cavity (28), and the liquid outlet ends of the two transfer pipes (4) are connected to the liquid inlet of the connecting valve body (1); The synchronization device (11) comprises two transmission gears (21), the two transmission gears (21) are respectively meshed with the two transmission racks (13), a winding wheel (22) is respectively installed at both ends of the transmission gear (21), each winding wheel (22) is connected to a connecting rope (25), the lower ends of all the connecting ropes (25) are commonly connected to a displacement cross frame (26), and a sealing rubber plug (27) is respectively fixed at both ends of the lower surface of the displacement cross frame (26), and the sealing rubber plug (27) can be used to block the liquid inlet end of the transfer pipeline (4).

2. The hard seal grease injection valve according to claim 1, characterized in that: The driving device comprises a servo motor (34), the servo motor (34) is mounted at the lower end of the collecting chamber (28), a rotating disc (35) is provided on the output shaft of the servo motor (34), a limiting guide rod (36) is provided on the rotating disc, and an alignment convex plate (19) is fixed to both ends of the upper surface of the supporting top plate (20), and the limiting guide rod (36) can abut against the alignment convex plate (19); The driving device further comprises two second springs (15), and the two second springs (15) are both arranged between the protective cover (18) and the supporting top plate (20).

3. The hard seal grease injection valve according to claim 2, characterized in that: Both sides of the lower end of the limiting guide rod (36) are respectively provided with 45° inclined surfaces.

4. The hard seal grease injection valve according to claim 1, characterized in that: A guide column (16) is provided on both sides of the lower end of the supporting top plate (20), and a first guide through hole is provided on both sides of the protective cover (18), and the two guide columns (16) pass through the two first guide through holes respectively.

5. The hard seal grease injection valve according to claim 1, characterized in that: A top bracket (29) is installed on the top of the collecting chamber (28), and a sealing top cover (32) is installed on both sides of the top bracket (29).

6. The hard seal grease injection valve according to claim 5, characterized in that: A filling port (30) is provided at the center of the top bracket (29), and a sealing sleeve (31) can be covered at the filling port (30). The filling port (30) is located above the displacement cross frame (26). A third spring (33) is provided on both sides of the lower surface of the top bracket (29), and one end of the third spring (33) away from the top bracket (29) is fixedly connected to the upper surface of the displacement cross frame (26).

7. The hard seal grease injection valve according to claim 5, characterized in that: A guide vertical plate (24) is respectively provided on both sides of the upper surface of the displacement cross frame (26), and two second guide through holes are respectively provided on the top bracket (29), and the two guide vertical plates (24) pass through the two second guide through holes.

8. The hard seal grease injection valve according to claim 5, characterized in that: A supporting base frame (23) is fixed on each of the sealing top covers (32), and each of the supporting base frames (23) is rotatably connected to a transmission gear (21) and two winding wheels (22).

9. The hard seal grease injection valve according to claim 5, characterized in that: Each of the sealing top covers (32) is provided with two wire passing holes, through which the connecting rope (25) passes.

10. The hard seal grease injection valve according to claim 1, characterized in that: The lower surface of the second valve body (9) is provided with an external thread, the delivery pipe (3) is provided with an internal thread, and the lower end of the second valve body (9) is threadedly connected to the delivery pipe (3); A counter-rotating circular cover (37) is also installed on the outer wall of the second valve body (9), and a sealing gasket (38) is provided on the lower surface of the counter-rotating circular cover (37).

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