Internal leakage prevention one-way valve for high-pressure slurry conveying

Abstract

The utility model relates to a high-pressure slurry conveying internal leakage prevention one-way valve, which comprises a hydraulic cylinder, a connecting frame, a bolt, a guide rod, a sealing gland, a packing seal, a sealing seat, a seal 1, a valve body, a pressure head lock cover, a pressure head, a valve seat lock cover, a seal 2 and a valve seat, the upper end of the guide rod is connected with the hydraulic cylinder, and the lower end extends into the valve body; the sealing seat is provided with an annular groove, and a seal is installed in the annular groove. The pressure head and the pressure head lock cover are mounted at the lower end of the guide rod; the valve seat is provided with an annular groove, a seal is installed in the annular groove, and the valve seat is fixed to the valve body through a valve seat lock cover. An annular convex edge and an annular groove are arranged on the pressing head, the annular convex edge and a seal installed on the valve seat are in compression sealing, the annular groove in the pressing head and an inner ring cavity of the valve seat form labyrinth sealing, multiple combination sealing is formed, and the sealing performance and the pressure resistance of the valve element are enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a high pressure slurry delivery anti -leakage check valve. Especially a check valve suitable for complex impurity component slurry delivery. BACKGROUND

[0002] In the solid waste treatment aspect, especially in the kitchen garbage treatment aspect, in the newly implemented garbage classification treatment system process, the classified kitchen garbage slurry is treated by the low temperature wet heat coalification treatment process. The system operation requires continuous and stable slurry delivery, and the system pressure is 4.0PMa. The classified slurry composition is relatively complex, and the impurity types are many. The conventional check valve is selected, and the slurry delivery often appears insufficient delivery pressure or frequent check valve failure rate. The check valve core component is easily damaged, and the service life is insufficient. In summary, the invention of a high pressure slurry delivery anti -leakage check valve is a key component to ensure the stable operation of the biomass slurry treatment system, reduce the maintenance cost of the check valve, and improve the safety production. CONTENT OF THE UTILITY MODEL

[0003] In order to solve the above problems, the utility model discloses a high pressure slurry delivery anti -leakage check valve, and the specific technical scheme is as follows: a high pressure slurry delivery anti -leakage check valve, including including hydraulic cylinder, connecting frame, bolt, guide rod, sealing gland, packing seal, sealing seat, sealing 1, valve body, pressure head lock cover, pressure head, valve seat lock cover, sealing 2, valve seat and fixing bolt.

[0004] The upper end of the check valve is a hydraulic cylinder, the hydraulic cylinder is installed on the upper end of the connecting frame and is fixed by bolts. The rod head of the hydraulic cylinder is connected with the upper end of the guide rod in a tenon and mortise manner, is fixed by a bolt, and is locked by a split pin to prevent loosening. The lower part of the connecting frame is assembled with the sealing seat and the valve body and is fixed by bolts. The packing seal is installed in the sealing seat, the core part is the guide rod, the sealing gland is installed on the upper end of the sealing seat and is fixed by bolts. The compression degree of the packing seal can be adjusted by bolts. The sealing groove is arranged on the upper end of the sealing seat, and the sealing 1 is installed in the sealing groove to form a sealing surface with the valve body to prevent the inner cavity of the valve body from leaking. The lower end of the guide rod is designed as a spherical surface, the pressure head is installed on the head, the pressure head and the guide rod are fixed by the pressure head lock cover and are fastened by bolts, and a gap is designed between the pressure head and the guide rod to allow small range shaking. The valve seat is installed on the lower part of the valve body, is compressed by the valve seat gland, and is fastened to the valve body by bolts. The sealing groove is arranged on the upper end of the valve seat, and the sealing 2 is installed in the groove. The valve body has one inlet and one outlet.

[0005] Further, the sealing surface of the lower end of the pressure head is provided with an annular convex edge and an annular groove, and forms multiple seals with the valve seat. The convex edge of the pressure head directly contacts the sealing 2 on the valve seat to form an end face seal. The annular groove of the pressure head forms a labyrinth seal with the inner ring cavity of the valve seat.

[0006] Further, the lower bottom surface of the pressure head is designed as a conical surface, which is beneficial to slurry flow and flow guide. BRIEF DESCRIPTION OF DRAWINGS

[0007] Figure 1 Fig. 1 is an assembly drawing of the high-pressure slurry conveying anti-internal leakage one-way valve according to the present application.

[0008] Figure 2 Fig. 2 is a sealing structure diagram of the high-pressure slurry conveying anti-internal leakage one-way valve according to the present application.

[0009] As shown in Figure 1 Fig. 1, 1 is a hydraulic cylinder, 2 is a connecting frame, 3 is a bolt, 4 is a guide rod, 5 is a sealing gland, 6 is a packing seal, 7 is a sealing seat, 8 is a sealing 1, 9 is a valve body, 10 is a pressure head lock cover, 11 is a pressure head, 12 is a valve seat lock cover, 13 is a sealing 2, 14 is a valve seat, 15 is an inlet, and 16 is an outlet.

[0010] As shown in Figure 2 Fig. 2, it comprises 21, an end face seal, and 22, a labyrinth seal. DETAILED DESCRIPTION

[0011] The present application will be further described below in conjunction with the drawings and further detailed description. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0012] As shown in the drawings, the high-pressure slurry conveying anti-internal leakage one-way valve comprises a hydraulic cylinder 1, a connecting frame 2, a bolt 3, a guide rod 4, a sealing gland 5, a packing seal 6, a sealing seat 7, a sealing 1 8, a valve body 9, a pressure head lock cover 10, a pressure head 11, a valve seat lock cover 12, a sealing 2 13, a valve seat 14, an inlet 15 and an outlet 16, the upper end of the one-way valve is the hydraulic cylinder 1, the hydraulic cylinder 1 is installed on the upper end of the connecting frame 2 and is fixed by bolts, the rod head of the hydraulic cylinder 1 is connected with the upper end of the guide rod 4 in a tenon-and-mortise mode, the bolt 3 is used for fixing, and the split pin is used for locking and preventing loosening, the lower part of the connecting frame 2 is assembled with the sealing seat 7 and the valve body 9 and is fixed by bolts, the packing seal 6 is installed in the sealing seat 7, the core part is installed with the guide rod 4, the sealing gland 5 is installed on the upper end of the sealing seat 7 and is fixed by bolts, the compression degree of the packing seal 6 can be adjusted through the bolts, the sealing groove is arranged on the upper end of the sealing seat 7, the sealing 1 8 is installed, and a sealing surface is formed with the valve body 9, so that the internal cavity of the valve body 9 is prevented from leaking, the top surface of the lower end of the guide rod 4 is designed as a spherical surface, the pressure head 11 is installed on the head, the pressure head 11 is fixed with the guide rod 4 through the pressure head lock cover 10 and is fastened by bolts, a gap is designed between the pressure head 11 and the guide rod 4, and the pressure head 11 can shake in a small range, the valve seat 14 is installed on the lower part of the valve body 9, the valve seat 14 is compressed through the valve seat lock cover 12 and is fastened to the valve body 9 by bolts, the sealing groove is arranged on the upper end of the valve seat 14, and the sealing 2 13 is installed in the groove, the inlet 15 and the outlet 16 are arranged on the valve body 9.

[0013] The structural principle of the utility model is:

[0014] When the whole structure of the utility model is used, one-way valves are arranged at the feeding end and the discharging end of the conveying cylinder, the inlet of the feeding end one-way valve is connected with a stock bin, the outlet is connected with the conveying cylinder, the inlet of the discharging end one-way valve is connected with the conveying cylinder, and the outlet is connected with a system pipeline, the feeding one-way valve and the discharging one-way valve act sequentially, when the feeding one-way valve is lifted and opened, the discharging one-way valve is lowered and closed, at this time, the conveying cylinder sucks materials, after the conveying cylinder finishes sucking materials, the feeding one-way valve is lowered and closed, the discharging one-way valve is lifted and opened, at this time, the conveying cylinder feeds materials, the feeding and discharging are circularly performed, stable feeding is completed, generally, two conveying cylinders are arranged, when one of the conveying cylinders sucks materials, the other one feeds materials.

[0015] The one-way valve is designed as a multiple sealing structure, the lower end sealing surface of the pressure head 11 is provided with an annular convex edge and an annular groove, and forms multiple sealing with the valve seat 14, the convex edge on the pressure head 11 directly contacts the sealing 2 13 on the valve seat 14, and forms end face sealing 21, the annular groove on the pressure head 11 forms labyrinth sealing 22 with the inner ring cavity of the valve seat 14.

[0016] The utility model discloses beneficial effect is:

[0017] The utility model discloses to the valve core structure of check valve has made multiple sealing design, replaces the structure such as steel ball, taper face sealing commonly used in prior art, the utility model discloses check valve passes through 4 - guide bar connection 11 - pressure head, in the use process, the guide bar abrasion and corrosion can replace spare parts quickly, reduce the cost of hydraulic cylinder rod corrosion abrasion replacement, 11 - pressure head and 14 - valve seat design multiple sealing structure, even if 13 - sealing 2 of 14 - valve seat is damaged, will form new labyrinth seal by the convex edge on 11 - pressure head and the ring groove on 14 - valve seat, and the ring groove both sides contact pressure head, form end face seal, constitute new multiple sealing structure, strengthen the sealing property of valve core, can bear higher slurry delivery pressure, prolong the service life of valve core parts, sealing structure design is assembly spare, and damage can replace quickly, compact structure has stronger preparation economy.

[0018] All parts are connected and fixed with adjacent parts through nuts, flat pads, elastic pads, screws and bolts, and are convenient to disassemble and assemble.

[0019] The utility model discloses beneficial effect is: The utility model discloses beneficial effect is:

Claims

1. A high pressure slurry delivery anti-drain back check valve characterized by: It includes hydraulic cylinder, connecting frame, bolt, guide rod, sealing gland, packing seal, sealing seat, seal 1, valve body, pressure head lock cover, pressure head, valve seat lock cover, seal 2 and valve seat, the valve body has a feed port and a discharge port; the upper end of the guide rod is connected with the hydraulic cylinder, the lower end extends into the valve body, and the middle is provided with a sealing device; the sealing seat is provided with an annular groove, and the seal 1 is installed in the annular groove of the sealing seat; the pressure head is installed with the pressure head lock cover at the lower end of the guide rod; the valve seat is provided with an annular groove, and the seal 2 is installed in the annular groove of the valve seat and is fixed to the valve body by the valve seat lock cover.

2. The high pressure slurry delivery anti-internal leakage check valve of claim 1, wherein The pressure head is provided with an annular convex edge and an annular groove, the annular convex edge is pressed tightly with the seal 2 installed on the valve seat, and the annular groove of the pressure head forms a labyrinth seal with the annular cavity in the valve seat.

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