High-temperature jacket downward-expanding type emptying valve

Abstract

The utility model provides a high-temperature jacket downward-expanding type emptying valve, and relates to the technical field of emptying valves. Comprising a valve seat arranged in a discharge port of a tank body, a pipe opening extends into the discharge port of the tank body, so that the pipe opening can be matched with discharge ports of tank bodies with different lengths, the adaptation capacity of the structure is improved, a valve body detachably connected with the valve seat is arranged on the valve seat, later maintenance and overhaul are facilitated, and a mounting channel used for mounting a valve rod is formed in the valve body. It is ensured that the valve rod can do reciprocating motion along the axis of the middle cavity of the valve seat under the corresponding channel of the installation channel, the flow guide structure can conduct flow dividing and guiding on a medium flowing out of the tank body, and the problem that the valve rod is bent and deformed due to the fact that the medium flowing through the valve seat impacts the valve clack is solved; the sealing structure is arranged between the valve rod and the mounting channel, so that media can be prevented from being attached to the outer wall of the valve rod, the valve rod is kept clean through the sealing structure, and the service life of the valve is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of discharging valves, and particularly relates to a downward unfolding discharging valve under a high-temperature jacket. Background Art

[0002] The discharging valve is an important component in the structure of a reaction kettle, and is used for the discharging and shut-off operations at the bottom of a storage tank and other containers. The discharging valve is a simple and practical industrial device, which has the advantages of simple operation and simple structure. However, there are also some disadvantages. For example, there may be leakage phenomena, especially in harsh environments such as high temperature and high pressure, and it is necessary to frequently check and maintain. The structure of the discharging valve is relatively simple, and leakage may occur in harsh environments such as high temperature and high pressure. At the same time, the hardening layer of the sealing ring is generally relatively fragile, and the hardening layer is severely worn, so it needs to be frequently replaced. At the same time, during the operation of the discharging valve, there is material residue at the discharging port, which affects the normal use of the discharging valve.

[0003] In view of this, a discharging valve that can meet the harsh high-temperature working conditions is needed, which has a valve flap guide to reduce the wear of the hardening layer and has outstanding sealing performance under harsh high-temperature working conditions. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a downward unfolding discharging valve under a high-temperature jacket, aiming at the deficiencies of the prior art, and it can solve the problems put forward in the above background art.

[0005] The technical solution of the utility model is realized as follows:

[0006] The utility model provides a downward unfolding discharging valve under a high-temperature jacket, which includes a valve seat arranged in the discharge port of the tank body. A valve body detachably connected to the valve seat is provided on the valve seat. An installation channel for installing a valve rod is arranged in the valve body. A valve flap connected to the valve rod is slidably arranged in the valve seat. A diversion structure for diverting materials and guiding the movement of the valve flap is arranged between the valve seat and the valve flap. A sealing structure is arranged between the valve rod and the installation channel.

[0007] In some technical solutions of the utility model, the diversion structure includes an inner convex ring arranged on the inner wall of the middle cavity of the valve seat. A plurality of inner grooves are circumferentially arranged on the inner wall of the middle cavity of the valve seat. A first convex platform is arranged on the top of the valve flap. The outer wall of the first convex platform abuts against the inner wall of the inner convex ring, and the outer wall of the valve flap abuts against a part of the inner wall of the middle cavity of the valve seat.

[0008] In some technical solutions of the utility model, the sealing structure includes a dust-proof component, a bearing, a spacer ring, and a packing gland sequentially sleeved on the valve rod. Valve rod packing is filled between the bearing and the spacer ring and between the spacer ring and the packing gland. A sealing cover detachably connected to the valve body is arranged on the valve rod. A disc spring is arranged between the sealing cover and the packing gland.

[0009] In some technical solutions of the present utility model, the top arc of the valve seat is adapted to the inner arc at the discharge port of the tank body.

[0010] In some technical solutions of the present utility model, an installation hole adapted to the valve stem is provided on the valve flap, a locking nut threadedly connected to the installation hole is sleeved on the valve stem, and a limiting member for restricting the separation of the valve stem from the locking nut is provided on the valve stem.

[0011] In some technical solutions of the present utility model, at least two inner steps are provided on one side of the valve body opposite to the valve seat, two outer steps adapted to the inner steps are provided on one side of the valve seat opposite to the valve body, a first sealing member is provided between one of the outer steps and its adapted inner step, a second sealing member is provided between the other outer step and its adapted inner step, and a threaded member for threadedly connecting the valve seat is provided on the valve body.

[0012] In some technical solutions of the present utility model, a chamber is provided on the outer side of the valve body, and a drain bolt communicating with the chamber is provided on the valve body.

[0013] Compared with the prior art, the embodiments of the present utility model have at least the following advantages or beneficial effects:

[0014] The valve seat has a relatively long pipe orifice, and the pipe orifice extends into the discharge port of the tank body, so that it can be adapted to the discharge ports of tanks with different lengths, increasing the adaptability of this structure. The valve body detachably connected to the valve seat is convenient for later maintenance and repair. An installation channel for installing the valve stem is provided inside the valve body to ensure that the valve stem can reciprocate along the axis of the middle cavity of the valve seat under the corresponding guide of the installation channel. A valve flap connected to the valve stem is slidably provided inside the valve seat, and the valve flap is used to block the middle cavity of the valve seat under the lifting of the valve stem, improving the sealing performance of this equipment. A diversion structure for diverting materials and guiding the movement of the valve flap is provided between the valve seat and the valve flap, which can divert and guide the medium flowing out of the tank body, avoiding the problem that the valve stem is bent and deformed due to the impact of the medium flowing through the valve seat on the valve flap; and the provided diversion assembly can guide the movement of the valve flap during the automatic alignment process of the valve flap and the valve seat, avoiding the problem that the hardening layer on the inner wall of the valve seat is worn and falls off due to increased wear, and also avoiding the problem that the medium accumulates between the inner wall of the middle cavity of the valve flap and the valve seat, resulting in wear of the hardening layer fixture; a sealing structure is provided between the valve stem and the installation channel to avoid the medium adhering to the outer wall of the valve stem, and the sealing structure keeps the valve stem clean, thereby extending the service life of the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the attached drawings required for the embodiments. It should be understood that the following attached drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related attached drawings can also be obtained based on these attached drawings.

[0016] Figure 1 Schematic diagram of the assembly structure in the sealed state of the present utility model;

[0017] Figure 2 Schematic diagram of the assembly structure in the material discharging state of the present utility model;

[0018] Figure 3 Schematic diagram of the assembly combination of the sealing structure in the present utility model;

[0019] Figure 4 Schematic diagram of the three-dimensional structure of the valve seat in the present utility model;

[0020] Figure 5 Schematic diagram of the partial sectional three-dimensional structure of the valve seat in the present utility model;

[0021] Figure 6 Schematic diagram of the top view structure of the valve seat in the present utility model;

[0022] Figure 7 For Figure 6 Schematic diagram of the sectional structure of the valve seat in the B - B direction;

[0023] Figure 8 For Figure 7 Schematic diagram of the sectional structure in the A - A direction;

[0024] Figure 9 For Figure 1 Schematic diagram of the enlarged partial structure at position C;

[0025] Icon: 1, inner groove; 2, valve seat; 3, valve body; 4, dust-proof component; 5, bearing; 6, sewage drain plug; 7, valve stem packing; 8, spacer ring; 9, packing gland; 10, disc spring; 11, sealing cover; 12, valve flap; 13, limiting part; 14, lock nut; 15, valve stem; 16, first boss; 17, inner convex ring; 18, first seal; 19, second seal. Detailed implementation manners

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. Usually, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model.

[0028] Embodiment 1

[0029] Please refer to Figures 1-9 as shown.

[0030] The present utility model provides a high-temperature jacket downward discharging valve. As shown in Figure 1 , Figure 2 shown, it includes a valve seat 2 arranged in the discharge port of the tank body. The valve seat 2 has a relatively long pipe orifice that extends into the discharge port of the tank body, enabling it to adapt to the discharge ports of tanks with different lengths and increasing the adaptability of this structure. A valve body 3 detachably connected to the valve seat 2 is provided on the valve seat 2, facilitating later maintenance and repair. An installation channel for installing a valve stem 15 is provided inside the valve body 3 to ensure that the valve stem 15 can reciprocate along the axis of the middle cavity of the valve seat 2 under the corresponding channel of the installation channel. A valve flap 12 connected to the valve stem 15 is slidably arranged inside the valve seat 2. The valve flap 12 is used to block the middle cavity of the valve seat 2 under the lifting of the valve stem 15, improving the sealing performance of this device. A diversion structure for diverting materials and guiding the movement of the valve flap 12 is provided between the valve seat 2 and the valve flap 12, which can divert and guide the medium flowing out of the tank body, avoiding the problem that the valve stem 15 is bent and deformed due to the impact of the medium flowing through the valve seat 2 on the valve flap 12; and the provided diversion component can guide the movement of the valve flap 12 during the automatic alignment process of the valve flap 12 and the valve seat 2, avoiding the problem that the wear of the hardened layer on the inner wall of the valve seat 2 is aggravated resulting in the shedding of the hardened layer, and also avoiding the problem that the medium accumulates between the valve flap 12 and the inner wall of the middle cavity of the valve seat 2 leading to the wear of the hardened layer fixture; a sealing structure is provided between the valve stem 15 and the installation channel to avoid the medium adhering to the outer wall of the valve stem 15. The sealing structure keeps the valve stem 15 clean, thereby extending the service life of the valve.

[0031] In some technical solutions of the present utility model, the diversion structure includes an inner convex ring 17 integrally formed on the inner wall of the middle cavity of the valve seat 2. A plurality of inner grooves 1 are circumferentially formed on the inner wall of the middle cavity of the valve seat 2, and 4 inner grooves 1 form a channel for discharging inclined materials; a first boss 16 is provided on the top of the valve flap 12. The outer diameter of the first boss 16 is smaller than that of the valve flap 12, and both are rotating bodies; the outer wall of the first boss abuts against the inner wall of the inner convex ring 17, and the outer wall of the valve flap 12 abuts against a part of the inner wall of the middle cavity of the valve seat 2. The specific working principle of the diversion structure is as follows: In the initial state, the first boss 16 is placed inside the inner convex ring 17 and abuts against the inner wall of the inner convex ring 17 to block the middle cavity of the valve seat 2. At this time, the outer wall of the valve flap 12 abuts against a part of the inner wall of the middle cavity of the valve seat 2, and the plurality of inner grooves 1 forming a channel for discharging inclined materials are blocked by the integrally formed valve flap 12 and the first boss 16; when the first boss 16 on the valve flap 12 is gradually withdrawn from the inner convex ring 17 under the pulling of the valve stem 15, the medium can enter the valve body 3 from the discharging channel formed by the 4 inner grooves 1 on the inner wall of the middle cavity of the valve seat 2 and the valve flap 12, avoiding continuous strong impact of the medium on the top of the valve flap 12, relieving the downward pressure on the valve stem 15, and avoiding the problem of bending deformation of the valve stem 15; because a plurality of inner grooves 1 are circumferentially formed on the inner wall of the middle cavity of the valve seat 2, the contact area between the outer wall of the valve flap 12 and the inner wall of the middle cavity of the valve seat 2 can be reduced, avoiding the problem of accelerated wear of the hardening layer provided on the inner wall of the valve seat 2 and the resulting shedding of the hardening layer during the automatic alignment process of the valve flap 12 and the valve seat 2, and improving the service life of the valve flap 12 and the valve seat 2.

[0032] In some technical solutions of the present utility model, the sealing structure includes a dust-proof component 4, a high-strength flexible graphite bearing 5, a spacer ring 8, and a packing gland 9 sequentially sleeved on the valve stem 15. Valve stem 15 packing 7 is filled between the bearing 5 and the spacer ring 8 and between the spacer ring 8 and the packing gland 9. A sealing cover 11 detachably connected to the valve body 3 by screws is provided on the valve stem 15, and a disc spring 10 is provided between the sealing cover 11 and the packing gland 9 to apply a pre-tightening force to the packing gland 9. The method of using a dust-proof component 4 plus a double-layer packing structure can effectively prevent the medium from adhering to the outer wall of the valve stem 15, keep the valve stem 15 clean during the reciprocating movement, and extend the service life of the valve.

[0033] In some technical solutions of the present utility model, the top arc of the valve seat 2 is adapted to the inner arc at the discharge port of the tank body. It can make the medium encounter less resistance when entering the valve seat 2 from the tank body, enable the material to smoothly enter the valve seat 2, and improve the discharge efficiency of the material medium.

[0034] In some technical solutions of the present utility model, an installation hole adapted to the valve stem 15 is provided on the valve flap 12. A locking nut 14 connected by threads to the installation hole is sleeved on the valve stem 15. A limiting member 13 for preventing the separation of the valve stem 15 from the locking nut is provided on the valve stem 15. This facilitates the later disassembly of the valve flap 12 and the valve stem 15, improving the disassembly efficiency. The provided limiting member 13 is a split ring, which can be embedded in a limiting groove provided at the end of the valve stem 15 to prevent the locking nut from separating from the valve flap 12, enhancing the structural strength when the valve flap 12 and the valve stem 15 are matched.

[0035] In some technical solutions of the present utility model, at least two inner steps are provided on one side of the valve body 3 opposite to the valve seat 2. Two outer steps adapted to the inner steps are provided on one side of the valve seat 2 opposite to the valve body 3. A first sealing member 18 is provided between one of the outer steps and its adapted inner step. The first sealing member 18 is a wound metal gasket. A second sealing member 19 is provided between the other outer step and its adapted inner step. The second sealing member 19 is a metal O-ring seal. A threaded member for connecting the valve seat 2 and the valve body 3 by threads is provided on the valve body 3. The above structure realizes double sealing of the valve seat 2 and the valve body 3, ensuring the sealing performance between the valve body 3 and the valve seat 2 under high-temperature working conditions and avoiding the occurrence of problems such as leakage.

[0036] In some technical solutions of the present utility model, a chamber is provided on the outer side of the valve body 3. A drain bolt communicating with the chamber is provided on the valve body 3. The provided chamber can introduce a cooling medium into the chamber to cool the valve body 3. After long-term use, the drain bolt can be rotated out of the valve body 3 to discharge the cooling medium located in the chamber, and clean cooling medium can be replaced to ensure a good cooling effect on the valve body 3 and improve its heat dissipation capacity.

[0037] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An expanding discharge valve under a high-temperature jacket, characterized in that, It includes a valve seat arranged inside the discharge port of the tank body. A valve body detachably connected to the valve seat is provided on the valve seat. An installation channel for installing a valve rod is arranged inside the valve body. A valve flap connected to the valve rod is slidably arranged in the middle cavity of the valve seat. A diversion structure for diverting materials and guiding the movement of the valve flap is arranged between the middle cavity of the valve seat and the valve flap. A sealing structure is arranged between the valve rod and the installation channel.

2. The under-expanded discharging valve with a high-temperature jacket according to claim 1, characterized in that, The diversion structure includes an inner convex ring arranged on the inner wall of the middle cavity of the valve seat. A plurality of inner grooves are circumferentially formed on the inner wall of the middle cavity of the valve seat. A first convex platform is arranged on the top of the valve flap. The outer wall of the first convex platform abuts against the inner wall of the inner convex ring. The outer wall of the valve flap abuts against the inner wall of the middle cavity of the valve seat.

3. The lower unfolding discharging valve with a high-temperature jacket according to claim 2, wherein The sealing structure includes a dust-proof component, a bearing, a spacer ring, and a stuffing gland sequentially sleeved on the valve rod. Valve rod packing is filled between the bearing and the spacer ring and between the spacer ring and the stuffing gland. A sealing cover detachably connected to the valve body is arranged on the valve rod. A disc spring is arranged between the sealing cover and the stuffing gland.

4. The under-expanded discharge valve with a high-temperature jacket according to claim 3, characterized in that, The top arc of the valve seat is adapted to the inner arc at the discharge port of the tank body.

5. A high-temperature jacket downward-expanding discharging valve according to claim 2 or 3, characterized in that, An installation hole adapted to the valve rod is formed on the valve flap. A locking nut threadedly connected to the installation hole is sleeved on the valve rod. A limiting member for preventing the valve rod from separating from the locking nut is arranged on the valve rod.

6. The under-expanded discharge valve with a high-temperature jacket according to claim 1, wherein At least two inner steps are arranged on one side of the valve body opposite to the valve seat. Two outer steps adapted to the inner steps are arranged on one side of the valve seat opposite to the valve body. A first sealing member is arranged between one outer step and its adapted inner step. A second sealing member is arranged between the other outer step and its adapted inner step. A threaded member for threadedly connecting the valve seat is arranged on the valve body.

7. The down-opening discharge valve with a high-temperature jacket according to claim 1, characterized in that, A chamber is arranged on the outer side of the valve body. A drain bolt communicating with the chamber is arranged on the valve body.

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