Anti-leakage switching valve for RTO

Abstract

The anti-leakage switching valve for the RTO comprises a valve plate and an annular valve seat, an annular groove is formed in the position, on one side of the valve plate, of the annular valve seat in a concave mode, an annular sealing ring is arranged in the annular groove in a clamped mode, and the annular sealing ring comprises an annular inner sealing strip and an annular outer sealing strip; the top of the annular inner sealing strip and the top of the annular outer sealing strip are connected with annular arc-shaped sealing strips, an elastic space is formed between the annular inner sealing strip and the annular outer sealing strip, and clamping step faces are formed in the middles of the opposite sides of the annular inner sealing strip and the annular outer sealing strip correspondingly. The clamping step face is clamped into the annular rectangular cavity in the bottom of the annular sealing ring, and when the valve plate is used, the valve plate extrudes the annular arc-shaped sealing strip. According to the invention, a sealing ring structure used between the valve plate and the valve seat is designed, and the sealing ring ensures anti-falling and effective sealing.

Description

Technical Field

[0001] The present application relates to a valve body, and in particular to a leakage-proof switching valve for RTO. Background Art

[0002] RTO (Remote Turning) is a highly efficient organic waste gas treatment device featuring high thermal efficiency, low operating costs, and the ability to treat large air volumes of low- to medium-concentration waste gas. It is widely used in industries such as coatings, printing, inks, adhesives, chemical and plastics processing, food and beverage industries, and chemical industrial waste treatment plants to treat volatile organic compounds (VOCs) waste gas. The RTO switching valve, a core component that automatically shuts off waste gas, can experience leakage, wear, and even excessive emissions during switching due to ineffective sealing between the valve plate and seat, corrosion from high-temperature VOC-containing waste gas, and untimely maintenance. These issues can severely impact the continuous and stable operation of the RTO and increase operational and maintenance costs for businesses. Summary of the Invention

[0003] The object of the present invention is to provide a leakage-proof switching valve for RTO, and a sealing ring structure is designed for use between a valve plate and a valve seat, which ensures anti-falling and effective sealing.

[0004] To achieve the above objectives, the present invention provides the following technical solutions.

[0005] An embodiment of the present application discloses an anti-leakage switching valve for RTO, including a valve plate and an annular valve seat, wherein the annular valve seat is recessed on one side of the valve plate to form an annular groove, an annular sealing ring is clamped in the annular groove, the annular sealing ring includes an annular inner seal and an annular outer seal, the tops of the annular inner seal and the annular outer seal are connected with an annular arc sealing strip, an elastic space is formed between the annular inner seal and the annular outer seal, a clamping step surface is respectively formed in the middle of the side opposite to the annular inner seal and the annular outer seal, the clamping step surface is clamped into the annular rectangular cavity at the bottom of the annular sealing ring, and when in use, the valve plate squeezes the annular arc sealing strip.

[0006] Preferably, in the above-mentioned anti-leakage switching valve for RTO, the annular sealing ring is integrally formed.

[0007] Preferably, in the above-mentioned anti-leakage switching valve for RTO, the inner side and the outer side of the annular arc-shaped sealing strip protrude inwardly and outwardly respectively.

[0008] Preferably, in the above-mentioned anti-leakage switching valve for RTO, the annular sealing ring forms an annular Y-shaped cavity above the annular rectangular cavity, and the bottom width of the annular Y-shaped cavity is smaller than the top width of the annular rectangular cavity.

[0009] Preferably, the above-mentioned leakage-proof switching valve for RTO further includes a valve shaft, and the valve shaft is installed on the axis of the valve plate.

[0010] Preferably, in the above-mentioned anti-leakage switching valve for RTO, one end of the valve shaft is fixed to the cylinder via a connecting piece, and a locking screw perpendicular to the axial direction of the valve shaft is provided between the connecting piece and the cylinder.

[0011] Preferably, in the above-mentioned RTO anti-leakage switching valve, the valve shaft passes through the valve body plate, and the first sleeve and the second sleeve are sequentially sleeved on the outer side of the valve body plate on the valve shaft, and the first ring body, the second ring body, and the third ring body are sequentially sleeved on the inside of the first sleeve on the valve shaft, and the inner wall and the outer wall of the second ring body are respectively formed with an arc-shaped inner groove and an arc-shaped outer groove, and a plurality of connecting holes are arranged between the arc-shaped inner groove and the arc-shaped outer groove, and a compressed air interface connected to the arc-shaped outer groove is formed on one side of the first sleeve.

[0012] Preferably, in the above-mentioned RTO anti-leakage switching valve, the middle and tail parts of the valve shaft are respectively provided with stabilizing mechanisms, and the stabilizing mechanisms include limiting rollers fitted on the bottom of the valve shaft and deep groove ball bearings fitted on both sides of the valve shaft.

[0013] Preferably, in the above-mentioned leakage-proof switching valve for RTO, the stabilizing mechanism is installed on the inner side of the valve body plate and inside the RTO.

[0014] Preferably, in the above-mentioned RTO anti-leakage switching valve, one end of the second sleeve is inserted into the interior of the first sleeve and fits against the third ring body, and a plurality of fixing bolts are provided between the outer flanges of the first sleeve and the second sleeve.

[0015] Compared with the existing technology, the advantage of this technical solution is that the sealing ring is stuck into the annular groove. Due to the elastic space between the inner and outer seals, the elastic space will be reduced after being stuck, so that the inner and outer seals have a tendency to expand outward, and an annular step surface is provided, so that the sealing ring is stably stuck in the annular groove and will not fall off, and the top forms an arc-shaped tip. When in use, the extrusion of the valve plate will make the sealing ring and the valve plate effectively fit together, ensuring the seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1Schematic diagram of an anti-leakage switching valve for RTO in an embodiment of the present invention;

[0018] Figure 2 The figure shows a cross-sectional schematic diagram of the annular valve seat and the annular sealing ring in an embodiment of the present invention;

[0019] Figure 3 Shown is a schematic diagram of the valve body plate in an embodiment of the present invention;

[0020] Figure 4 Shown Figure 3 Enlarged view of point A in the middle;

[0021] Figure 5 Shown is a schematic diagram of a stabilizing mechanism at a valve body plate in an embodiment of the present invention;

[0022] Figure 6 Shown is a front view of the stabilizing mechanism at the valve body plate in an embodiment of the present invention;

[0023] Figure 7 Shown is a front view of the internal stabilization mechanism of the RTO in an embodiment of the present invention. DETAILED DESCRIPTION

[0024] The following is a detailed description of the technical solutions in the embodiments of the present invention, with reference to the accompanying drawings. Obviously, the described embodiments are only a portion of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0025] Combine Figure 1-7 As shown, an anti-leakage switching valve 100 for RTO includes a valve plate 101 and an annular valve seat 102. The annular valve seat 102 is recessed on one side of the valve plate 101 to form an annular groove 103. An annular sealing ring 104 is clamped in the annular groove 103. The annular sealing ring 104 includes an annular inner seal 105 and an annular outer seal 106. The tops of the annular inner seal 105 and the annular outer seal 106 are connected with an annular arc sealing strip 107. An elastic space 108 is formed between the annular inner seal 105 and the annular outer seal 106. A clamping step surface 109 is respectively formed in the middle of the side opposite to the annular inner seal 105 and the annular outer seal 106. The clamping step surface 109 is clamped into the annular rectangular cavity 110 at the bottom of the annular sealing ring 104. When in use, the valve plate 101 squeezes the annular arc sealing strip 107.

[0026] In this embodiment, the present structure is the internal mechanism of the valve body, and the external shell is omitted. The valve plate is used to isolate the flow in the middle of the annular valve seat, and the sealing ring is stuck in the annular groove. Due to the elastic space between the inner and outer seals, the elastic space will be reduced after being stuck, so that the inner and outer seals have a tendency to expand outward, and an annular step surface is provided so that the sealing ring is stably stuck in the annular groove and will not fall off, and the top forms an arc-shaped tip. When in use, the extrusion of the valve plate will make the sealing ring and the valve plate fit effectively, ensuring the seal.

[0027] Furthermore, the annular sealing ring 104 is integrally formed.

[0028] In this embodiment, the structural stability of the annular sealing ring is ensured, and the structure will not be lost when in an extruded state.

[0029] Furthermore, the inner side and the outer side of the annular arc-shaped sealing strip 107 bulge inwardly and outwardly respectively.

[0030] In this embodiment, it can be ensured that the inner and outer sides of the sealing ring are supported on the annular valve seat during extrusion, thereby preventing the annular sealing ring from losing its structure and falling off after extrusion.

[0031] Furthermore, the annular sealing ring 104 forms an annular Y-shaped cavity 111 above the annular rectangular cavity 110 , and the bottom width of the annular Y-shaped cavity 111 is smaller than the top width of the annular rectangular cavity 110 .

[0032] In this embodiment, a step surface of the sealing ring is realized to ensure that the sealing ring will not fall off after being squeezed.

[0033] Furthermore, it also includes a valve shaft 112 , which is installed on the axis of the valve plate 101 .

[0034] Furthermore, one end of the valve shaft 112 is fixed to the cylinder 114 via a connecting piece 113 , and a locking screw (not shown) is provided between the connecting piece 113 and the cylinder 114 along an axis perpendicular to the valve shaft 112 .

[0035] In this embodiment, it is ensured that the cylinder shaft and the valve shaft always run linearly and horizontally without any empty space.

[0036] Furthermore, the valve shaft 112 passes through the valve body plate 116, and the first shaft sleeve 117 and the second shaft sleeve 118 are sequentially sleeved on the outer side of the valve body plate 116 on the valve shaft 112, and the first ring body 119, the second ring body 120, and the third ring body 121 are sequentially sleeved inside the first shaft sleeve 117 on the valve shaft 112. The inner wall and the outer wall of the second ring body 120 are respectively formed with an arc-shaped inner groove 122 and an arc-shaped outer groove 123, and a plurality of connecting holes 124 are arranged between the arc-shaped inner groove 122 and the arc-shaped outer groove 123. A compressed air interface 125 connected to the arc-shaped outer groove 123 is formed on one side of the first shaft sleeve 117.

[0037] In this embodiment, to prevent gas on the left side of the valve body plate from leaking from the connection, when compressed gas is introduced, the low pressure on the left side of the valve body plate causes the compressed gas to flow between the inner and outer sides of the three rings, effectively preventing gas leakage. The connecting hole ensures that compressed gas flows between the inner and outer grooves, whereupon the compressed gas diffuses along the inner and outer walls of the three rings, preventing gas on the left side of the valve body plate from leaking to the right.

[0038] Furthermore, stabilizing mechanisms 126 are provided at the middle and tail ends of the valve shaft 112. These stabilizing mechanisms 126 include limiting rollers 127 fitted to the bottom of the valve shaft 112 and deep groove ball bearings 128 fitted to the upper sides of the valve shaft 112. The stabilizing mechanisms 126 are mounted on the inner side of the valve body plate 116 and inside the RTO.

[0039] In this embodiment, since the valve shaft moves multiple times, the position stability and flexible operation of the valve shaft are ensured.

[0040] Furthermore, one end of the second sleeve 118 is inserted into the interior of the first sleeve 117 and fits against the third ring body 121 . A plurality of fixing bolts 129 are provided between the outer flanges of the first sleeve 117 and the second sleeve 118 .

[0041] In this embodiment, the stability of the structure is ensured.

[0042] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0043] The above is only a specific implementation method of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. An RTO anti-leakage switching valve, characterized in that: The closure of the valve plate is constructed so that the closure is flush with the closure of the valve plate, and the closure is constructed so that the closure is flush with the closure of the valve plate. The closure is constructed so that the closure is flush with the closure of the valve plate.

2. The RTO anti-leakage switching valve according to claim 1, characterized in that: The annular sealing ring is integrally formed.

3. The RTO anti-leakage switching valve according to claim 1, characterized in that: The inner side and the outer side of the annular arc-shaped sealing strip protrude inwardly and outwardly respectively.

4. The RTO anti-leakage switching valve according to claim 1, characterized in that: The annular sealing ring forms an annular Y-shaped cavity above the annular rectangular cavity, and the bottom width of the annular Y-shaped cavity is smaller than the top width of the annular rectangular cavity.

5. The RTO anti-leakage switching valve according to claim 1, characterized in that: It also includes a valve shaft, which is installed on the axis of the valve plate.

6. The RTO anti-leakage switching valve according to claim 5, characterized in that: One end of the valve shaft is fixed to the cylinder through a connecting piece, and a locking screw is provided between the connecting piece and the cylinder along an axis perpendicular to the valve shaft.

7. The RTO anti-leakage switching valve according to claim 5, characterized in that: The valve shaft passes through the valve body plate, and the first sleeve and the second sleeve are sequentially sleeved on the outer side of the valve body plate on the valve shaft, and the first ring body, the second ring body and the third ring body are sequentially sleeved on the inside of the first sleeve on the valve shaft, and the inner wall and the outer wall of the second ring body are respectively formed with an arc-shaped inner groove and an arc-shaped outer groove, and a plurality of connecting holes are arranged between the arc-shaped inner groove and the arc-shaped outer groove, and a compressed air interface connected to the arc-shaped outer groove is formed on one side of the first sleeve.

8. The RTO anti-leakage switching valve according to claim 5, characterized in that: The middle and tail of the valve shaft are respectively provided with stabilizing mechanisms, and the stabilizing mechanisms include a limiting roller fitted on the bottom of the valve shaft and a deep groove ball bearing fitted on both sides of the valve shaft.

9. The RTO anti-leakage switching valve according to claim 8, characterized in that: The stabilizing mechanism is installed on the inner side of the valve body plate and inside the RTO.

10. The RTO anti-leakage switching valve according to claim 7, characterized in that: One end of the second sleeve is inserted into the interior of the first sleeve and fits against the third ring body. A plurality of fixing bolts are provided between the outer flanges of the first sleeve and the second sleeve.

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