Paste filling body filling guarantee valve

Abstract

The utility model discloses a paste filling body filling guarantee valve which comprises a cylinder barrel, a cylinder cover is arranged at the top of the cylinder barrel, and a cylinder bottom is arranged at the bottom of the cylinder barrel. A large piston is arranged in an inner cavity of the cylinder barrel, the upper portion and the lower portion of the large piston are separated through a partition plate, and a lower small cylinder is defined by the partition plate, the cylinder barrel wall and the bottom of the large piston. A slurry inlet and a slurry outlet are formed in the side wall of the cylinder barrel; a channel communicated with the slurry inlet and the slurry outlet is formed in the upper part of the large piston; a small piston is arranged in an inner cavity of the lower small cylinder, and the stroke direction of the small piston is perpendicular to the stroke direction of the large piston. A cavity A is defined by the top face of the large piston, the cylinder cover and the cylinder barrel wall, and a cavity B is defined by the bottom face of the large piston, the cylinder bottom and the cylinder barrel wall. A small cylinder bottom is arranged on the inner wall of one side of the lower small cylinder, a cavity C is defined by the bottom of the small piston, the small cylinder bottom, the partition plate and the cylinder barrel wall, a groove is annularly formed in the middle of the small piston, and a cavity D is defined by the groove, the bottom of the large piston, the partition plate and the cylinder barrel wall.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of mine paste filling, especially relates to a filling paste filling safeguard valve. BACKGROUND

[0002] At present, mine filling equipment, in the process of underground paste filling, needs to fill the pipeline with water at first, then injects the mortar, flushes the pipeline, closes various valves in the pipeline and discharges the gas in the pipeline. In order to completely discharge the gas and ensure that the paste filling in the pipeline is in the full pipe state, the safeguard valve at the end of the pipeline plays a vital safety guarantee role for the filling system. When the existing filling safeguard valve is in the closed state, there is a certain gap between the valve core and the cylinder. When the paste is in the high pressure state, the valve core cannot seal the pipeline, which leads to the leakage of water in the pipeline during the gas discharge process and cannot achieve the full pipe state. At the same time, due to the leakage of water, the mortar will be agglomerated after bleeding, which causes the local pipe blocking phenomenon. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at overcoming the insufficient of prior art, provides a kind of filling paste filling safeguard valve.

[0004] In order to achieve the above purpose, the technical scheme provided by the utility model is as follows:

[0005] The filling guarantee valve of the filling paste body comprises a cylinder (2), a cylinder cover (1) arranged at the top of the cylinder (2), and a cylinder bottom (8) arranged at the bottom of the cylinder (2); a large piston (7) is arranged in the inner cavity of the cylinder (2), the upper part and the lower part of the large piston (7) are separated by a partition plate (21), and a lower small cylinder is formed between the partition plate (21), the cylinder wall of the cylinder (2) and the bottom of the large piston (7); the side wall of the cylinder (2) is provided with a pulp inlet (4) and a pulp outlet (14), the upper part of the large piston (7) is provided with a channel communicating with the pulp inlet (4) and the pulp outlet (14); the inner cavity of the lower small cylinder is provided with a small piston (9), the stroke direction of the small piston (9) is perpendicular to the stroke direction of the large piston (7); an A cavity is formed between the top surface of the large piston (7), the cylinder cover (1) and the cylinder wall of the cylinder (2), and a B cavity is formed between the bottom surface of the large piston (7), the cylinder bottom (8) and the cylinder wall of the cylinder (2); the inner wall of one side of the lower small cylinder is provided with a small cylinder bottom (6), a C cavity is formed between the bottom of the small piston (9), the small cylinder bottom (6), the partition plate (21) and the cylinder wall of the cylinder (2), a groove is arranged around the middle part of the small piston (9), a D cavity is formed between the groove, the bottom of the large piston (7), the partition plate (21) and the cylinder wall of the cylinder (2); the top of the small piston (9) is provided with a sealing assembly; the cylinder cover (1) is provided with a first large cylinder liquid injection port (17) communicating with the A cavity through a pipeline, and the cylinder bottom (8) is provided with a second large cylinder liquid injection port (18) communicating with the B cavity through a pipeline; the top of the large piston (7) is connected with a piston rod, the top of the piston rod is provided with a first small cylinder liquid injection port (19) communicating with the D cavity through a pipeline, and the top of the large piston (7) is further provided with a second small cylinder liquid injection port (20) communicating with the C cavity through a pipeline.

[0006] Preferably, the sealing assembly comprises a valve core sealing pressing plate (11) and a valve core sealing fixing screw (12) for fixing the valve core sealing pressing plate (11) on the top of the small piston (9), and a valve core sealing (10) is arranged around between the valve core sealing pressing plate (11) and the top surface of the small piston (9).

[0007] Preferably, the valve core sealing (10) is a polyurethane piston sealing.

[0008] Preferably, the top of the cylinder cover (1) is provided with a large piston limiting device, the large piston limiting device comprises a guide plate (16) fixed at the top of the cylinder cover (1) and a circumferential positioning ring (13) arranged at the top of the piston rod of the large piston (7), and the circumferential positioning ring (13) is connected with the guide plate (16) in a clamping manner.

[0009] More preferably, the guide plate (16) is provided with a clamping groove, and the two sides of the circumferential positioning ring (13) are clamped into the clamping groove.

[0010] More preferably, the guide plate (16) is provided with a displacement sensor (15), and the circumferential positioning ring (13) is provided with a magnetic ring.

[0011] Preferably, the pulp inlet (4) is communicated with a pulp inlet pipeline, and the pulp outlet (14) is communicated with a pulp outlet pipeline.

[0012] More preferably, the pulp inlet pipeline and the pulp outlet pipeline are both provided with a flushing observation port (3) and a flushing port plug rod welding piece (5).

[0013] The utility model is further described as follows:

[0014] The working process of the filling guarantee valve is as follows:

[0015] When the valve body is in the open state (see Figure 1 ), liquid is injected into the B cavity from the second large cylinder injection port, liquid flows out of the A cavity from the first large cylinder injection port, the large piston is pushed to move upward, until the large piston abuts against the cylinder cover, at this time, the central axis of the small piston sealing assembly is aligned with the central axis of the pulp outlet, in order to prevent the large piston from rotating in the circumferential direction, the circumferential positioning ring moves linearly along the clamping groove in the guide plate during the movement, moves to the intermediate state (see Figure 2 ), liquid is injected into the C cavity from the second small cylinder injection port, liquid flows out of the D cavity from the first small cylinder injection port, the small piston sealing assembly is pushed to move to the right, until the valve core sealing enters the pipeline of the pulp outlet, reaches the closed state (see Figure 3 ).

[0016] When the valve body is in the closed state (see Figure 3 ), liquid flows into the D cavity from the first small cylinder injection port, liquid flows out of the C cavity from the second small cylinder injection port, the small piston sealing assembly is pushed to move to the right, until the small piston abuts against the small cylinder bottom, moves to the intermediate state (see Figure 2 ), liquid flows into the A cavity from the first large cylinder injection port, liquid flows out of the B cavity from the second large cylinder injection port, the large piston is pushed to move downward, until the large piston abuts against the cylinder bottom, reaches the open state (see Figure 1 ).

[0017] When the valve body is in the closed state (see Figure 3 ), the plug rod welding piece at the flushing port is pulled out, high-pressure liquid is injected from the flushing port, the pulp around the valve core sealing is flushed, at the same time, the plug rod welding piece at the flushing observation port is pulled out, the flushing action is confirmed. The four positions at the pulp outlet are sequentially flushed, after the flushing is completed, the valve is operated to the open state (see Figure 1 ).

[0018] The utility model has the beneficial effects that:

[0019] 1. The filling pipeline can form complete sealing for water and mortar under high pressure during the exhaust process, and ensure that the pipeline is full.

[0020] 2, can clean the valve core seal, prevent the slurry around the valve core seal condensation, cause guarantee valve seal failure, prolong the service life of the valve core seal at the same time.

[0021] 3, the inlet and outlet slurry pipeline is connected with the valve body by bolts, the pipeline hole is convenient to disassemble and maintain after wearing.

[0022] In summary, the filling guarantee valve of the filling paste body inserts a small piston sealing assembly in the middle of the large piston of the hydraulic cylinder. The small piston sealing assembly is provided with a piston seal made of polyurethane material. When the piston seal enters the slurry outlet pipeline, it can form complete sealing for water and mortar under high pressure, thereby ensuring that the pipeline is full during the exhaust process. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a structure schematic view of the filling guarantee valve of the filling paste body (intermediate state);

[0024] Figure 2 is a structure schematic view of the filling guarantee valve of the filling paste body (intermediate state);

[0025] Figure 3 is a structure schematic view of the filling guarantee valve of the filling paste body (full open state).

[0026] In the figure: 1, cylinder cover; 2, cylinder barrel; 3, flushing observation port; 4, slurry inlet; 5, flushing port; 6, small cylinder bottom; 7, large piston; 8, cylinder bottom; 9 small piston; 10, valve core seal; 11, valve core seal pressing plate; 12, valve core seal fixing screw; 13, circumferential positioning ring; 14, slurry outlet; 15, displacement sensor; 16, guide plate; 17, first large cylinder liquid injection port; 18, second large cylinder liquid injection port; 19, first small cylinder liquid injection port; 20, second small cylinder liquid injection port; 21, partition plate. DETAILED DESCRIPTION

[0027] The utility model will be further described below in combination with the drawings and examples. Example 1

[0028] Referring to Figures 1 to 3The filling body of the filling guarantee valve comprises a cylinder 2, a cylinder cover 1 arranged at the top of the cylinder 2, and a cylinder bottom 8 arranged at the bottom of the cylinder 2; a large piston 7 is arranged in the inner cavity of the cylinder 2, the upper part and the lower part of the large piston 7 are separated by a partition plate 21, and a lower small cylinder is formed between the partition plate 21, the cylinder wall of the cylinder 2 and the bottom of the large piston 7; the side wall of the cylinder 2 is provided with a pulp inlet 4 and a pulp outlet 14, and the upper part of the large piston 7 is provided with a channel communicating with the pulp inlet 4 and the pulp outlet 14; the inner cavity of the lower small cylinder is provided with a small piston 9, the stroke direction of the small piston 9 is perpendicular to the stroke direction of the large piston 7; an A cavity is formed between the top surface of the large piston 7, the cylinder cover 1 and the cylinder wall of the cylinder 2, and a B cavity is formed between the bottom surface of the large piston 7, the cylinder bottom 8 and the cylinder wall of the cylinder 2; the inner wall of one side of the lower small cylinder is provided with a small cylinder bottom 6, a C cavity is formed between the bottom of the small piston 9, the small cylinder bottom 6, the partition plate 21 and the cylinder wall of the cylinder 2, a recess is arranged around the middle part of the small piston 9, a D cavity is formed between the recess, the bottom of the large piston 7, the partition plate 21 and the cylinder wall of the cylinder 2; the top of the small piston 9 is provided with a sealing assembly; the cylinder cover 1 is provided with a first large cylinder liquid injection port 17 communicating with the A cavity through a pipeline, and the cylinder bottom 8 is provided with a second large cylinder liquid injection port 18 communicating with the B cavity through a pipeline; the top of the large piston 7 is connected with a piston rod, the top of the piston rod is provided with a first small cylinder liquid injection port 19 communicating with the D cavity through a pipeline, and the top of the large piston 7 is further provided with a second small cylinder liquid injection port 20 communicating with the C cavity through a pipeline.

[0029] The sealing assembly comprises a valve core sealing pressing plate 11 and a valve core sealing fixing screw 12 for fixing the valve core sealing pressing plate 11 on the top of the small piston 9, and a valve core sealing 10 is arranged around between the valve core sealing pressing plate 11 and the top surface of the small piston 9. The valve core sealing 10 is a polyurethane piston sealing. The top of the cylinder cover 1 is provided with a large piston limiting device, the large piston limiting device comprises a guide plate 16 fixed at the top of the cylinder cover 1 and a circumferential positioning ring 13 arranged at the top of the piston rod of the large piston 7, and the circumferential positioning ring 13 is connected with the guide plate 16 in a clamping mode. The guide plate 16 is provided with clamping grooves, and the two sides of the circumferential positioning ring 13 are clamped into the clamping grooves. The guide plate 16 is provided with a displacement sensor 15, and the circumferential positioning ring 13 is provided with a magnetic ring. The pulp inlet 4 communicates with a pulp inlet pipeline, and the pulp outlet 14 communicates with a pulp outlet pipeline. The pulp inlet pipeline and the pulp outlet pipeline are both provided with a flushing observation port 3 and a flushing port plug rod welding piece 5.

[0030] The above is only a preferred embodiment of the present application, and for those skilled in the art, according to the idea of the present application, the specific implementation mode and the application range can be changed, and the content of the specification should not be understood as the limitation of the present application. The equivalent changes or modifications of the structure features and principles in the scope of the present application are included in the scope of the present application.

Claims

1. A paste filling assurance valve characterized by comprising: The filling guarantee valve of the filling paste body comprises a cylinder (2), a cylinder cover (1) arranged at the top of the cylinder (2), and a cylinder bottom (8) arranged at the bottom of the cylinder (2); the inner cavity of the cylinder (2) is provided with a large piston (7), the upper part and the lower part of the large piston (7) are separated by a partition plate (21), and a lower small cylinder is formed between the partition plate (21), the cylinder wall of the cylinder (2) and the bottom of the large piston (7); the side wall of the cylinder (2) is provided with a pulp inlet (4) and a pulp outlet (14), the upper part of the large piston (7) is provided with a channel communicating with the pulp inlet (4) and the pulp outlet (14); the inner cavity of the lower small cylinder is provided with a small piston (9), the stroke direction of the small piston (9) is perpendicular to the stroke direction of the large piston (7); an A cavity is formed between the top surface of the large piston (7), the cylinder cover (1) and the cylinder wall of the cylinder (2), and a B cavity is formed between the bottom surface of the large piston (7), the cylinder bottom (8) and the cylinder wall of the cylinder (2); the inner wall of one side of the lower small cylinder is provided with a small cylinder bottom (6), a C cavity is formed between the bottom of the small piston (9), the small cylinder bottom (6), the partition plate (21) and the cylinder wall of the cylinder (2), a groove is arranged around the middle part of the small piston (9), a D cavity is formed between the groove, the bottom of the large piston (7), the partition plate (21) and the cylinder wall of the cylinder (2); the top of the small piston (9) is provided with a sealing assembly; the cylinder cover (1) is provided with a first large cylinder liquid injection port (17) communicating with the A cavity through a pipeline, and the cylinder bottom (8) is provided with a second large cylinder liquid injection port (18) communicating with the B cavity through a pipeline; the top of the large piston (7) is connected with a piston rod, the top of the piston rod is provided with a first small cylinder liquid injection port (19) communicating with the D cavity through a pipeline, and the top of the large piston (7) is further provided with a second small cylinder liquid injection port (20) communicating with the C cavity through a pipeline.

2. The paste filling assurance valve according to claim 1, wherein The sealing assembly comprises a valve core sealing pressing plate (11) and a valve core sealing fixing screw (12) for fixing the valve core sealing pressing plate (11) on the top of the small piston (9), and a valve core sealing (10) is arranged around the top surface of the valve core sealing pressing plate (11) and the small piston (9).

3. The paste filling assurance valve according to claim 2, wherein The valve core sealing (10) is a polyurethane piston sealing.

4. The paste filling assurance valve according to claim 1, wherein The top of the cylinder cover (1) is provided with a large piston limiting device, the large piston limiting device comprises a guide plate (16) fixed at the top surface of the cylinder cover (1) and a circumferential positioning ring (13) arranged at the top of the piston rod of the large piston (7), and the circumferential positioning ring (13) is connected with the guide plate (16) in a clamping mode.

5. The paste filling assurance valve according to claim 4, wherein The guide plate (16) is provided with a clamping groove, and the two sides of the circumferential positioning ring (13) are clamped into the clamping groove.

6. The paste filling assurance valve according to claim 4, wherein The guide plate (16) is provided with a displacement sensor (15), and the circumferential positioning ring (13) is provided with a magnetic ring.

7. The paste filling assurance valve according to claim 1, wherein The pulp inlet (4) communicates with a pulp pipeline, and the pulp outlet (14) communicates with a pulp pipeline.

8. The paste filling assurance valve according to claim 7, wherein The pulp pipeline and the pulp pipeline are both provided with a flushing observation port (3) and a flushing port plug rod welding piece (5).

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