Slurry type high-pressure valve

Abstract

The utility model relates to the technical field of valves, aims to solve the problems that in the prior art, blockage is prone to occurring, a grouting pipe is explosive, potential safety hazards are large, pressure control is unstable, and construction quality is affected, and provides a grout type high-pressure valve which comprises a valve base body. A valve end A is arranged at the bottom of the valve base body, a valve core rod and an alloy valve rod which can move up and down and are coaxially fixed with each other are arranged at the top end of the valve base body, and the valve base body forms a high-pressure cavity; a slurry outlet penetrating through the valve base body is formed in the high-pressure cavity; a slurry inlet is formed in the middle of the valve A end, a groove is formed in the end, close to the valve base body, of the valve A end and communicated with the slurry inlet, and an annular alloy gasket is arranged in the groove. An embedded section is arranged at the bottom end of the alloy valve rod, an inner concave hole is formed in the embedded section, a plurality of through holes communicated with the inner concave hole are formed in the embedded section in the radial direction, the embedded section is located on and tightly attached to the inner diameter of the annular alloy gasket, and the through holes, the inner concave hole and the high-pressure cavity are communicated with one another. The utility model has the beneficial effects of low possibility of blockage, low possibility of pipe burst during grouting, small potential safety hazard, stable pressure control and capability of ensuring the construction quality.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a slurry type high pressure valve. Background Art

[0002] At present, electric valves are mainly used instead of manual valves in the high-pressure grouting industry, which solves the problem of large error range of manual pressure control. The existing electric valves are durable and corrosion-resistant high-pressure valves. The slurry contact parts are made of alloy material, and separated high-pressure chamber inner wall protection components are used, which has a good protective effect on the inner wall of the high-pressure valve cavity. The maintenance is simple, the valve replacement cost is reduced, the wear resistance and corrosion resistance are improved, and the safety of the high-pressure valve is enhanced.

[0003] However, in the existing high-pressure valve structure, when rock chips, foreign matter and other particles appear during the high-pressure grouting process, it is easy to cause the high-pressure control valve to be partially or completely blocked, causing a sudden increase in pressure or even bursting of the high-pressure grouting pipe, posing a major safety hazard. At the same time, the pressure control is not stable, affecting the construction quality. Utility Model Content

[0004] The utility model aims to provide a slurry type high pressure valve to solve the problems in the prior art of easy clogging, easy pipe bursting during grouting, great safety hazards, unstable pressure control and influence on construction quality.

[0005] The embodiment of the utility model is achieved as follows:

[0006] The utility model embodiment provides a slurry type high pressure valve, which includes a valve base;

[0007] The bottom of the valve base is detachably sealed and connected with the valve A end, the top of the valve base is provided with a valve core rod and an alloy valve stem, the valve core rod and the alloy valve stem are coaxially fixed to each other, the valve core rod and the alloy valve stem are inserted into the valve base along the axis of the valve base and can move up and down, the valve base, the valve A end, the valve core rod and the alloy valve stem are connected to each other to form a cylindrical high-pressure chamber inside, and the alloy valve stem is located in the high-pressure chamber;

[0008] A slurry outlet is provided in the high-pressure chamber and passes through the side wall of the valve base body. The outer end of the slurry outlet is sealed and connected to a slurry outlet pipe, and the slurry outlet pipe is communicated with the high-pressure chamber.

[0009] A slurry inlet is provided in the middle of the valve A end, and a groove having a diameter larger than that of the slurry inlet is provided at one end of the valve A end close to the valve base. The groove is connected to the slurry inlet, and an annular alloy gasket is provided in the groove, and the outer wall of the annular alloy gasket is attached to the inner wall of the groove.

[0010] The bottom end of the alloy valve stem has an embedded section, the bottom end of the embedded section is provided with an inner concave hole, the bottom end of the alloy valve stem is provided with a plurality of through holes connected to the inner concave hole in the radial direction, the embedded section is embedded in the inner diameter of the annular alloy gasket and fits tightly, after the embedded section is embedded in the inner diameter of the annular alloy gasket, the through hole, the inner concave hole and the high-pressure chamber are connected to each other.

[0011] When in use, the corresponding high-pressure pipeline at the grouting site is connected to the slurry inlet at the A end of the valve and the slurry outlet of the slurry outlet pipe. When the high-pressure valve is working, the slurry enters from the slurry inlet at the A end of the valve and enters the high-pressure chamber through the annular alloy gasket, the groove, the inner concave hole and the through hole. When the connecting body of the valve core rod and the alloy valve stem moves downward, the flow area is reduced, the slurry flow rate is increased, and the pressure is increased; when the connecting body of the valve core rod and the alloy valve stem moves upward, the flow area is expanded, resulting in slurry pressure. The force is reduced, thereby realizing the pressure regulating function of the high-pressure valve. When the connector between the valve core rod and the alloy valve stem is broken, since the entire valve is installed vertically upward, the broken valve core rod or the alloy valve stem will directly fall into the valve A end, and the broken valve core rod will not enter the high-pressure pipe along the valve A end. Such a design can ensure that under the impact of the slurry, the broken valve core rod or the alloy valve stem can only move inside the high-pressure chamber, and will not cause blockage or pressure holding. Finally, the slurry is discharged from the slurry outlet pipe on the slurry outlet.

[0012] The slurry-type high-pressure valve disclosed in the present embodiment adopts a bottom-up passage method, and the above-mentioned through hole for passing the slurry is provided at the bottom end of the above-mentioned alloy valve stem. The flow area is expanded through the above-mentioned through hole, so that the slurry pressure is reduced, thereby realizing the pressure regulating function of the high-pressure valve. Under the same working environment, larger particles in the slurry can be discharged into the above-mentioned high-pressure chamber through the above-mentioned through hole, thereby making the slurry-type high-pressure valve have the beneficial effects of simple structure, durability, corrosion resistance, simple maintenance, low replacement cost, easy installation, not easy to be blocked, not easy to burst the pipe during grouting, small safety hazard, stable pressure control and ensuring construction quality.

[0013] Optionally: an annular sealing groove is provided on an end surface of the valve A end close to the valve base, the annular sealing groove is located outside the groove, and a sealing strip is installed in the annular sealing groove.

[0014] Such an arrangement can effectively prevent the slurry from overflowing from the threads connecting the valve A end and the valve base, thereby affecting the subsequent disassembly and maintenance.

[0015] Optionally, a plurality of the through holes are symmetrically distributed in the radial direction of the bottom end of the alloy valve stem.

[0016] Such an arrangement can reduce the impact between the slurries passing through each other, thereby ensuring stable pressure control.

[0017] Optionally: an alloy sleeve and a second alloy gasket are provided in the high-pressure chamber, the second alloy gasket is located at the top of the high-pressure chamber and is in the shape of a disc, a hole is opened in the middle of the second alloy gasket, and the connecting body of the valve core rod and the alloy valve stem passes through the hole and is inserted into the high-pressure chamber;

[0018] The alloy sleeve is located inside the high-pressure chamber and is a cylindrical barrel with two ends connected. The inner diameter of the alloy sleeve is larger than the diameter of the valve core rod, and the diameter and height of the alloy sleeve are slightly smaller than the diameter and height of the high-pressure chamber.

[0019] A slurry outlet hole is opened on the side of the alloy sleeve, and the slurry outlet hole is matched with the slurry outlet in position and equal in size.

[0020] In this way, the second alloy gasket provides support for the alloy sleeve, and at the same time facilitates the connection between the valve core rod and the alloy valve stem to pass through the hole and be inserted into the high-pressure chamber, thereby realizing the pressure regulating function of the high-pressure valve; and the alloy sleeve can protect the high-pressure chamber, avoid the valve core rod being broken under the impact of slurry and wearing the valve base, and thus the alloy sleeve extends the service life of the valve.

[0021] Optionally, the valve A end and the valve base are threadedly connected to each other, and a first external thread is provided on an outer wall of an end of the valve A end away from the valve base.

[0022] With such arrangement, the threaded connection between the valve A end and the valve base is convenient for disassembly and assembly, which is beneficial for maintaining the high-pressure chamber and is convenient for repair. The first external thread is convenient for access to the high-pressure pipeline at the grouting site.

[0023] Optionally, a second external thread is provided on the outer wall of one end of the slurry outlet pipe away from the valve base.

[0024] With such arrangement, the second external thread is convenient for connecting to the high-pressure pipeline at the grouting site.

[0025] Optionally: a valve B end is provided between the valve core rod and the valve base, the valve B end is sleeved on the valve core rod, the valve B end is threadedly connected to the valve base, a fixing nut for locking the valve B end is provided on the top of the valve base, and the fixing nut is threadedly connected to the outer wall of the valve B end.

[0026] With such arrangement, after the distance of the valve end B is adjusted, tightening the fixing nut can lock the valve end B to prevent the valve end B from loosening due to external vibration during the grouting process, thereby causing unstable pressure and safety hazards.

[0027] Optionally: a rubber sealing ring is provided between the bottom end of the valve B end and the second alloy gasket, and the rubber sealing ring is sleeved on the valve core rod to form a tight fit.

[0028] With such arrangement, after assembly, the valve B end and the second alloy gasket press the rubber sealing ring, effectively preventing the slurry from escaping from the upper end and clogging the threads between the valve B end and the fixing nut and the threads between the valve B end and the valve base, thereby avoiding the phenomenon that the valve cannot be disassembled later.

[0029] Optionally, the outer wall of the valve core rod and the inner wall of the valve B end are threadedly connected to each other.

[0030] With such arrangement, the valve core rod and the valve B end are threadedly connected to each other, so that the connecting body of the valve core rod and the alloy valve stem can easily realize the function of up and down movement, thereby facilitating the pressure regulating function of the high-pressure valve.

[0031] Optionally: a keyway hole is opened on the outer wall of the top end of the valve core rod, a limit gear is installed in the keyway hole, and the diameter of the limit gear at the top end of the valve core rod is larger than the inner diameter of the annular alloy gasket.

[0032] With such arrangement, the broken valve core rod or the alloy valve stem will not enter the high-pressure pipe along with the valve A end. Such design can ensure that the broken valve core rod or the alloy valve stem under the impact of slurry can only move inside the alloy sleeve, and will not cause blockage or pressure holding.

[0033] Optionally, the outer wall of the valve base has a flange, the flange is welded to the outer wall of the valve base, a plurality of bolt holes are opened on the flange, and the plurality of bolt holes are evenly distributed on the flange.

[0034] In this way, the flange is arranged to fix the high-pressure valve.

[0035] Based on the above description, the slurry type high-pressure valve disclosed by the utility model has the beneficial effects of simple structure, durability, corrosion resistance, simple maintenance, low replacement cost, convenient installation, not easy to be blocked, not easy to burst the pipe during grouting, small safety hazard, stable pressure control and ensuring construction quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 It is a cross-sectional view of a slurry type high pressure valve in an embodiment of the utility model;

[0038] Figure 2 It is a front view of a slurry type high pressure valve in an embodiment of the utility model;

[0039] Figure 3 : shows a front view of the valve A end in an embodiment of the utility model;

[0040] Figure 4 : shows a cross-sectional view of the valve A end in an embodiment of the utility model;

[0041] Figure 5 It is a front view of the alloy sleeve in the embodiment of the utility model;

[0042] Figure 6 It is a top view of the alloy sleeve in the embodiment of the utility model.

[0043] Icons: 1-valve base, 2-valve A end, 3-valve core rod, 4-alloy valve stem, 5-high-pressure chamber, 6-slurry outlet, 7-slurry outlet pipe, 8-slurry inlet, 9-groove, 10-annular alloy gasket, 11-embedded section, 12-inner concave hole, 13-through hole, 14-annular sealing groove, 15-sealing strip, 16-alloy sleeve, 17-second alloy gasket, 18-hole, 19-first external thread, 20-second external thread, 21-valve B end, 22-fixing nut, 23-rubber sealing ring, 24-limiting gear, 25-key slot hole, 26-flange, 27-slurry outlet hole. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0045] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. 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.

[0046] Example

[0047] See also Figure 1 , Figure 2, Figure 3 , Figure 4 , Figure 5 and Figure 6 , This embodiment proposes a slurry type high pressure valve, including a valve base 1;

[0048] The bottom of the valve base 1 is detachably sealed and connected with the valve A end 2. The top of the valve base 1 is provided with a valve core rod 3 and an alloy valve stem 4. The valve core rod 3 and the alloy valve stem 4 are coaxially fixed to each other. The valve core rod 3 and the alloy valve stem 4 are inserted into the valve base 1 along the axis of the valve base 1 and can move up and down. The valve base 1, the valve A end 2, the valve core rod 3 and the alloy valve stem 4 are connected to each other to form a cylindrical high-pressure chamber 5 inside, and the alloy valve stem 4 is located in the high-pressure chamber 5;

[0049] A slurry outlet 6 penetrating the side wall of the valve base 1 is provided in the high-pressure chamber 5, and a slurry outlet pipe 7 is sealedly connected to the outer end of the slurry outlet 6, and the slurry outlet pipe 7 is communicated with the high-pressure chamber 5;

[0050] A slurry inlet 8 is provided in the middle of the valve A end 2, and a groove 9 having a diameter larger than that of the slurry inlet 8 is provided at one end of the valve A end 2 close to the valve base 1. The groove 9 is connected to the slurry inlet 8, and an annular alloy gasket 10 is provided in the groove 9. The outer wall of the annular alloy gasket 10 is attached to the inner wall of the groove 9.

[0051] The bottom end of the alloy valve stem 4 has an embedded section 11, and an inner concave hole 12 is opened at the bottom end of the embedded section 11. A plurality of through holes 13 connected to the inner concave hole 12 are opened radially at the bottom end of the alloy valve stem 4. The embedded section 11 is embedded in the inner diameter of the annular alloy gasket 10 and fits tightly. After the embedded section 11 is embedded in the inner diameter of the annular alloy gasket 10, the through holes 13, the inner concave hole 12 and the high-pressure chamber 5 are connected to each other.

[0052] When in use, the corresponding high-pressure pipeline at the grouting site is connected to the slurry inlet 8 of the valve A end 2 and the slurry outlet 6 of the slurry outlet pipe 7. When the high-pressure valve is working, the slurry enters from the slurry inlet of the valve A end 2 and enters the high-pressure chamber 5 through the annular alloy gasket 10, the groove 9, the inner concave hole 12 and the through hole 13. When the connection between the valve core rod 3 and the alloy valve stem 4 moves downward, the flow area is reduced, the slurry flow rate is increased, and the pressure is increased; when the connection between the valve core rod 3 and the alloy valve stem 4 moves upward, the flow area is expanded, resulting in a decrease in the slurry pressure. Small, thereby realizing the pressure regulating function of the high-pressure valve. When the connector between the valve core rod 3 and the alloy valve stem 4 is broken, since the entire valve is installed vertically upward, the broken valve core rod 3 or the alloy valve stem 4 will directly fall into the valve A end 2, and the broken valve core rod 3 will not enter the high-pressure pipe along the valve A end 2. This design can ensure that under the impact of the slurry, the broken valve core rod 3 or the alloy valve stem 4 can only move inside the high-pressure chamber 5, and will not cause blockage or pressure holding. Finally, the slurry is discharged from the slurry outlet pipe 7 on the slurry outlet 6.

[0053] The slurry-type high-pressure valve disclosed in the present embodiment adopts a bottom-up passage method, and a through hole 13 for passing the slurry is provided at the bottom end of the alloy valve stem 4. The through hole 13 expands the flow area, so that the slurry pressure is reduced, thereby realizing the pressure regulating function of the high-pressure valve. Under the same working environment, larger particles in the slurry can be discharged into the high-pressure chamber 5 through the through hole 13, thereby making the slurry-type high-pressure valve have the beneficial effects of simple structure, durability, corrosion resistance, simple maintenance, low replacement cost, easy installation, not easy to be blocked, not easy to burst the pipe during grouting, small safety hazard, stable pressure control and ensuring construction quality.

[0054] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 An annular sealing groove 14 is provided on one end surface of the valve A end 2 close to the valve base 1. The annular sealing groove 14 is located on the outside of the groove 9. A sealing strip 15 is installed in the annular sealing groove 14, which can effectively prevent the slurry from overflowing from the threads connecting the valve A end 2 and the valve base 1, affecting the later disassembly and maintenance.

[0055] The plurality of through holes 13 are symmetrically distributed in the radial direction of the bottom end of the alloy valve stem 4, so that the impact between the slurry passing through can be reduced, thereby ensuring stable pressure control.

[0056] An alloy sleeve 16 and a second alloy gasket 17 are provided in the high-pressure chamber 5. The second alloy gasket 17 is located at the top of the high-pressure chamber 5 and is in the shape of a disc. A hole 18 is opened in the middle of the second alloy gasket 17. The connecting body of the valve core rod 3 and the alloy valve stem 4 passes through the hole 18 and is inserted into the high-pressure chamber 5.

[0057] The alloy sleeve 16 is located inside the high-pressure chamber 5 and is a cylindrical barrel with two ends connected. The inner diameter of the alloy sleeve 16 is larger than the diameter of the valve core rod 3, and the diameter and height of the alloy sleeve 16 are slightly smaller than the diameter and height of the high-pressure chamber 5.

[0058] A slurry outlet hole 27 is opened on the side of the alloy sleeve 16, and the slurry outlet hole 27 is matched with the slurry outlet port 6 in position and equal in size. The setting of the second alloy gasket 17 provides support for the alloy sleeve 16, and at the same time facilitates the connection between the valve core rod 3 and the alloy valve stem 4 to pass through the hole 18 and be inserted into the high-pressure chamber 5, thereby realizing the pressure regulating function of the high-pressure valve; and the alloy sleeve 16 can protect the high-pressure chamber 5, prevent the broken valve core rod 3 from wearing the valve base 1 under the impact of the slurry, and then the alloy sleeve 16 prolongs the service life of the valve.

[0059] The valve A end 2 and the valve base 1 are threadedly connected to each other. A first external thread 19 is provided on the outer wall of the end of the valve A end 2 away from the valve base 1. The valve A end 2 and the valve base 1 are threadedly connected to each other for easy disassembly and assembly, which is beneficial to the maintenance of the high-pressure chamber 5 and convenient maintenance. The first external thread 19 is convenient for connecting to the high-pressure pipeline at the grouting site.

[0060] A second external thread 20 is provided on the outer wall of one end of the slurry outlet pipe 7 away from the valve base 1 , and the second external thread 20 is convenient for connecting to the high-pressure pipeline at the grouting site.

[0061] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 A valve B end 21 is provided between the valve core rod 3 and the valve base body 1, and the valve B end 21 is sleeved on the valve core rod 3. The valve B end 21 is connected to the valve base body 1 through a threaded connection. A fixing nut 22 for locking the valve B end 21 is provided at the top of the valve base body 1. The fixing nut 22 is threadedly connected to the outer wall of the valve B end 21. When the valve B end 21 adjusts the distance, tightening the fixing nut 22 can lock the valve B end 21 to prevent the valve B end 21 from loosening due to external vibration during the grouting process, thereby causing unstable pressure and safety hazards.

[0062] A rubber sealing ring 23 is provided between the bottom end of the valve B end 21 and the second alloy gasket 17. The rubber sealing ring 23 is sleeved on the valve core rod 3 to form a tight fit. After assembly, the valve B end 21 and the second alloy gasket 17 press the rubber sealing ring 23, which effectively prevents the slurry from escaping from the upper end and clogging the threads between the valve B end 21 and the fixing nut 22 and the threads between the valve B end 21 and the valve base 1, thereby avoiding the phenomenon that the valve cannot be disassembled later.

[0063] The outer wall of the valve core rod 3 and the inner wall of the valve B end 21 are threadedly connected to each other. The valve core rod 3 and the valve B end 21 are threadedly connected to each other, so that the connection between the valve core rod 3 and the alloy valve stem 4 can easily realize the function of up and down movement, thereby facilitating the pressure regulation function of the high-pressure valve.

[0064] A key slot hole 25 is provided on the outer wall at the top end of the valve core rod 3, and a limit gear 24 is installed in the key slot hole 25. The diameter of the limit gear 24 at the top end of the valve core rod 3 is larger than the inner diameter of the annular alloy gasket 10. In this way, the broken valve core rod 3 or alloy valve stem 4 will not enter the high-pressure pipe along the valve A end 2. This design can ensure that the broken valve core rod 3 or alloy valve stem 4 can only move inside the alloy sleeve 16 under the impact of the slurry, and will not cause blockage or pressure build-up.

[0065] The outer wall of the valve base 1 has a flange 26, which is welded to the outer wall of the valve base 1. The flange 26 is provided with a plurality of bolt holes (not shown in the figure), which are evenly distributed on the flange 26. The flange 26 is used to fix the high-pressure valve.

[0066] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 In this embodiment, the flange 26 and the slurry outlet pipe 7 are welded to the valve base 1. Four bolt holes are designed on the flange 26 for fixing the high-pressure valve. The outer circle of the slurry outlet pipe 7 is designed with a second external thread 20 for connecting to the high-pressure pipe at the grouting site; the valve B end 21 is connected to the valve base 1 by a threaded connection, and the fixing nut 22 is used as a locking nut. When the valve B end 21 is adjusted to a good distance, the valve B end 21 can be locked by tightening the fixing nut 22 to prevent the valve B end 21 from loosening due to external vibration during the grouting process, thereby causing unstable pressure and safety hazards; the valve core rod 3 and the valve B end 21, and the valve A end 2 and the valve base 1 are also connected by threads.

[0067] In this embodiment, the rubber sealing ring 23 is assembled on the valve core rod 3 to form a tight fit, and is located between the valve B end 21 and the second alloy gasket 17. After assembly, the valve B end 21 and the second alloy gasket 17 press the rubber sealing ring 23 to prevent slurry from escaping from the upper end and clogging the threads between the valve B end 21 and the fixing nut 22, and the valve B end 21 and the valve base 1, thereby avoiding the phenomenon that the valve cannot be disassembled later.

[0068] In this embodiment, the alloy valve stem 4 is provided with a plurality of through holes 13 on the radial direction at the bottom thereof. Under the state of extreme pressure, the alloy valve stem 4 and the annular alloy gasket 10 can fit tightly together. Under the same working environment, larger particles in the slurry can be discharged through the through holes 13. At the same time, the through holes 13 are designed to be symmetrical, which can reduce the impact between the slurries passing through, thereby ensuring stable pressure control.

[0069] In this embodiment, the slurry contact parts are all alloys, and the alloy material has the characteristic of wear resistance. The alloy parts inside the high-pressure valve are tightly pressed against each other after assembly and are not easy to loosen. The inner wall of the valve high-pressure chamber 5 is also not easy to be worn, which can effectively prevent the slurry from scouring the valve during high-pressure grouting, greatly extending the service life of the high-pressure valve.

[0070] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. Slurry type high pressure valve, characterized by: including a valve base; The bottom of the valve base is detachably sealed and connected with the valve A end, the top of the valve base is provided with a valve core rod and an alloy valve stem, the valve core rod and the alloy valve stem are coaxially fixed to each other, the valve core rod and the alloy valve stem are inserted into the valve base along the axis of the valve base and can move up and down, the valve base, the valve A end, the valve core rod and the alloy valve stem are connected to each other to form a cylindrical high-pressure chamber inside, and the alloy valve stem is located in the high-pressure chamber; A slurry outlet is provided in the high-pressure chamber and passes through the side wall of the valve base body. The outer end of the slurry outlet is sealed and connected to a slurry outlet pipe, and the slurry outlet pipe is communicated with the high-pressure chamber. A slurry inlet is provided in the middle of the valve A end, and a groove having a diameter larger than that of the slurry inlet is provided at one end of the valve A end close to the valve base. The groove and the slurry inlet are mutually connected, and an annular alloy gasket is provided in the groove, and the outer wall of the annular alloy gasket is attached to the inner wall of the groove; The bottom end of the alloy valve stem has an embedded section, the bottom end of the embedded section is provided with an inner concave hole, the bottom end of the alloy valve stem is radially provided with a plurality of through holes connected to the inner concave hole, the embedded section is embedded in the inner diameter of the annular alloy gasket and fits tightly, after the embedded section is embedded in the inner diameter of the annular alloy gasket, the through hole, the inner concave hole and the high-pressure chamber are connected to each other.

2. The slurry type high pressure valve according to claim 1, characterized in that: An annular sealing groove is provided on an end surface of the valve A end close to the valve base, the annular sealing groove is located outside the groove, and a sealing strip is installed in the annular sealing groove.

3. The slurry type high pressure valve according to claim 1, characterized in that: The plurality of through holes are symmetrically distributed in the radial direction of the bottom end of the alloy valve stem.

4. The slurry type high pressure valve according to claim 1, characterized in that: An alloy sleeve and a second alloy gasket are provided in the high-pressure chamber. The second alloy gasket is located at the top of the high-pressure chamber and is in the shape of a disc. A hole is opened in the middle of the second alloy gasket. The connecting body of the valve core rod and the alloy valve stem passes through the hole and is inserted into the high-pressure chamber. The alloy sleeve is located inside the high-pressure chamber and is a cylindrical barrel with two ends connected. The inner diameter of the alloy sleeve is larger than the diameter of the valve core rod, and the diameter and height of the alloy sleeve are slightly smaller than the diameter and height of the high-pressure chamber. A slurry outlet hole is opened on the side of the alloy sleeve, and the slurry outlet hole is matched with the slurry outlet in position and equal in size.

5. The slurry type high pressure valve according to claim 1, characterized in that: The valve A end is threadedly connected to the valve base, and a first external thread is provided on an outer wall of an end of the valve A end away from the valve base.

6. The slurry type high pressure valve according to claim 1, characterized in that: A second external thread is formed on the outer wall of one end of the slurry outlet pipe away from the valve base.

7. The slurry type high pressure valve according to claim 4, characterized in that: A valve B end is provided between the valve core rod and the valve base, the valve B end is sleeved on the valve core rod, the valve B end and the valve base are connected by threads, a fixing nut for locking the valve B end is provided at the top of the valve base, and the fixing nut is threadedly connected to the outer wall of the valve B end.

8. The slurry type high pressure valve according to claim 7, characterized in that: A rubber sealing ring is arranged between the bottom end of the valve B end and the second alloy gasket, and the rubber sealing ring is sleeved on the valve core rod to form a tight fit.

9. The slurry type high pressure valve according to claim 7, characterized in that: The outer wall of the valve core rod and the inner wall of the valve B end are threadedly connected to each other.

10. The slurry type high pressure valve according to claim 1, characterized in that: A keyway hole is provided on the outer wall of the top end of the valve core rod, and a limit gear is installed in the keyway hole. The diameter of the limit gear at the top end of the valve core rod is larger than the inner diameter of the annular alloy gasket.

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