200422544 玖、發明說明： [發明所屬之技術領域] 本發明，係關於具備防逆流機能之止回閥。 [先前技術] 習知止回閥之閥體、閥座、及止動件，以陶竞或超硬 合金為材料來形成（例如，參閱專利文獻”。 〈專利文獻1>日本專利特開2〇〇〇_235〇號公報 [發明内容] 曼jjjgj欲解決之技#f 然而，上述構件之材料若使用陶瓷或超硬合金等燒結 材料（加熱粉體來成形之材料）時，高速且高頻繁度之撞擊 在彼此間反覆發生’導致此等構件磨損、消耗，而產生碎 或裂縫、果，δ亥碎片塞住褒有止回閥之果（參閱圖3及 圖句之壓缸或切換間（參閱圖3)的滑動部n不僅造 成止回閥之損壞，亦造成其他構件損壞。 歷決問顳之枯_乎矜 本發明’係鑒於上述實情而為，其目的在於提供一種 能長期維持防逆流機能、耐久性高、且低成本之止回閥。 為了要解決上述問題，本發明之止回閥，係具備：閥 體’在管路之一部分所形成之限制空間設置成可動狀態； 閥座’構成限制空間之一端’並具備藉由闕體之密合而封 閉之閥口，及止動件’肖閥座_起構成限制空間，用以在 閥口打開時限制閥體之可動領域；且將閥體之接觸部之硬 度，設定為比閥座及止動件之接觸部之硬度為低。 200422544 又，所謂接觸部，係在各構件間產 :。因此，該各構件，可以單一材料構 材料構成’至少在各構件之接觸部能滿 二數個200422544 发明 Description of the invention: [Technical field to which the invention belongs] The present invention relates to a check valve having a backflow prevention function. [Prior art] A valve body, a valve seat, and a stopper of a conventional check valve are formed of ceramic or cemented carbide (see, for example, Patent Literature). <Patent Literature 1> Japanese Patent Laid-Open No. 2 〇〇〇_235〇 [Summary of the Invention] Manjjjgj's Techniques to be Solved #f However, if the materials of the above components are made of sintered materials such as ceramics or cemented carbide (materials formed by heating powder), they will be high speed and high Frequent collisions occur repeatedly between each other, causing these components to wear and consume, resulting in broken or cracked, fruit, δHai debris plugging the fruit with a check valve (see Figure 3 and the sentence of the cylinder or switch The sliding part n (see Fig. 3) not only causes damage to the check valve, but also damages to other components. It is a matter of time that the dryness of the time _ 矜 The present invention is based on the above facts, and its purpose is to provide a long-term In order to solve the above problems, the check valve of the present invention is provided with a check space that maintains the anti-backflow function, high durability, and low cost. The check space formed by the valve body in a part of the pipeline is set in a movable state. ; Seat structure One end of the restricted space is provided with a valve port closed by the close contact of the carcass, and a stopper 'Xiao valve seat' constitutes a restricted space for restricting the movable area of the valve body when the valve port is opened; and the valve body The hardness of the contact part is set to be lower than the hardness of the contact part of the valve seat and the stopper. 200422544 The so-called contact part is produced between various components: Therefore, each component can be composed of a single material. 'At least two or more of the contact parts of each component
[實施方式] 1 J 以下’依照圖式說明本發明止回闕之實施形態。 本發明實施形態之止_，係如圖丨所 織機用之止回閥7所設M n q 田作噴水式 如圖3所示之產生喷水之管路;圖“置於果内，使用於 :止回閥由下列構件構成：球狀閥體3,在管路工之 邛为所形成的限制空間2( 動狀態；闕座5,構成限制I ::之;㈣ 體3之密合而封閉之圓形閥口 ：，並具：藉由閥 -起構成限制空間2之構件，龙且止動件6’係與間座5 閥口 4打開時限制閥體 ，備球面狀内面，用以當 以連結閥座5與止動件6。 領域；及連結構件8,用 止回閥7 ’藉由從閥座 回闕7之管路1之流路。i日闕 來禮保裝有止 内部流出閥口4外時“當流體欲從限制空間2之 到闕座5之閱口 4而封：二)所示，球狀闕體3便被推 至限制空間2内時，如圖二之流路。當闕體3被推擠 在止動件内壁之球面狀”，):：’闕體3便收納於形成 件6之通路9的位置，固定於避開設於止動 在該例，將該:構::保安定之流體流通。 再1千以早一之成形品來構成，將閥體 200422544 3之接觸部之硬度，設定為比_ 5及止動件6之接觸部 之硬度為低。以下，比較滿足該條件之樣品與不滿足之樣 品來考察。 表1顯示止動件耐久試驗結果，係以淬火不銹鋼球 (HV830)為閥體3，使用比閥體3硬度高之任意閥座5，製 造具備由各種材料構成之止動件6的樣品，比較各耐用期 間所得之結果。在具備不銹鋼製止動件（具有比閥體3還小 之硬度）之樣品1或具備淬火不銹鋼止動件之樣品2，分別 僅有5個月與7個月之耐用期間，相對於此，在具備氧化 锆、氧化鋁、超硬合金Ni及超硬合金c〇的止動件之樣品 3〜樣品6(具超過閥體3之硬度），均有超過2年之耐用 間。 [表1] 止動件耐久試驗結果 材質 硬度 淬火不錢鋼球之壽命 丄 3錄鋼 HV280 5個月 2 ----- 鋼 HV600 7個月 — 3 —, 4 —— c 氧化锆 X—;---- HV1400 2年0K 氧化鋁 --- HV2000 2年0K 5 ——^ HV1300 HV1500 2年0K 2 年 0K — 試驗條株· Μ 水壓 卞·轉速800rpm，使用水量7cc/投緯， 85kgf/cm2 闊體·淬火z M a , τ人不銹鋼球（HV830) 试驗期間·· 2年 表2 顯示閥座耐久試驗結果 係以相同之淬火不銹鋼 200422544 球（HV83G)為閥體3 ’使用比閥體3硬度高之任意止動件6 製块具備由氧化錯、氧化鋁構成之閥座5的樣品，比較 根據各磨耗狀態之耐用期間所得之結果。具備氧化錯、氧 化紹所構成之閥座(具超過閥體3之硬度)的樣品，均有超 過2年之耐用期間。 [表2][Embodiment] 1 J Hereinafter, an embodiment of the non-return valve according to the present invention will be described with reference to the drawings. The stop _ of the embodiment of the present invention is shown in Figure 丨 the check valve 7 used in the loom M nq field for water spray type as shown in Figure 3 to produce water spray pipeline; Figure "Placed in the fruit, used in : Check valve is composed of the following components: ball valve body 3, the restricted space 2 (moving state) formed by the plumber; the seat 5, which constitutes the restriction I ::; Closed round valve port: and also: by the valve-lifting member constituting the restricted space 2, the stopper 6 'is connected with the seat 5 when the valve port 4 is opened to restrict the valve body, with a spherical inner surface. In order to connect the valve seat 5 and the stopper 6. The field; and the connecting member 8, the non-return valve 7 'is used to flow from the valve seat back to the pipeline 1 of the pipeline. When it flows out of the valve port 4, "When the fluid is to be sealed from the restricted space 2 to the reading port 4 of the seat 5: as shown in figure 2), the spherical carcass 3 is pushed into the restricted space 2, as shown in figure 2 Flow path. When the carcass 3 is pushed to the spherical shape of the inner wall of the stopper ",) :: 'The carcass 3 is stored in the position of the passage 9 of the forming member 6 and is fixed to avoid opening in the stop. In this example, put: Structure :: The flow of fluid is set by security. One thousand is formed by the former one. The hardness of the contact part of the valve body 200422544 3 is set to be lower than the hardness of the contact part of _ 5 and the stopper 6. The following Compare the samples that meet this condition with those that do not meet the requirements. Table 1 shows the results of the endurance test of the stopper. The hardened stainless steel ball (HV830) is used as the valve body 3, and any valve seat 5 that is harder than the valve body 3 is used. Manufacture samples with stoppers 6 made of various materials and compare the results obtained during each durability period. Sample 1 with stainless steel stoppers (having less hardness than valve body 3) or quenched stainless steel stops Sample 2 of each piece has a durability period of only 5 months and 7 months, respectively. In contrast, samples 3 to 3 of the stoppers provided with zirconia, alumina, cemented carbide Ni, and cemented carbide c0 6 (with hardness exceeding valve body 3), all have a durability of more than 2 years. [Table 1] Result of endurance test of stopper Material life of hardened and hardened steel balls 丄 3 recorded steel HV280 5 months 2 ----- steel HV600 7 months — 3 —, 4 —— c zirconia X —; --- -HV1400 2 years 0K alumina --- HV2000 2 years 0K 5 ---- ^ HV1300 HV1500 2 years 0K 2 years 0K — Test strips · Hydrostatic pressure · Rotation speed 800rpm, water consumption 7cc / weft insertion, 85kgf / cm2 wide Hardened z M a, τ stainless steel ball (HV830) During the test period 2 years Table 2 shows the valve seat endurance test results using the same hardened stainless steel 200422544 ball (HV83G) as the valve body 3 'Use than the valve body 3 Samples of high-hardness arbitrary stopper 6 with valve seat 5 made of oxidized oxide and alumina are compared with the results obtained during the durability period according to the various wear states. Samples exceeding the hardness of valve body 3) have a durability period of more than 2 years. [Table 2]
耐久試驗結果 材質 硬度 泮火不錢鋼球之磨耗 _ 1 2 氧化鍅 —氧化— HV1400 2年OK HV2000 2年OK ”式驗條件：轉速800rPm，使用水量7cc/投緯，水壓 85kgf/cm2 閥體：淬火不銹鋼球（HV830) 試驗期間：2年 從以上夕么士里 山 ，果’此確認：在以淬火不銹鋼球（Ην830) =閥體3之冑形，丨動件之材質若使用陶竟或超硬合金則 肐獲侍比較長之耐用期Μ，也能確認：藉由使用陶瓷作為 閱座之材料，幽— ,1 . 成子不被空蝕。又，在該止動件耐久試驗及 7f耐久試驗，都是在投緯狀態變為異常之時候（使用效率 月"、員下降，織物之異常增加之狀態）結束試驗，當作已達到 壽命。 表3顯不磨耗試驗結果，係以淬火不銹鋼球（HV830) 一 POM树脂球為閥體3，使用比閥體3硬度為高之任意閥 座5或止動件6，比較各種材料所構成之止動件6或閥座 200422544 5之磨耗狀況所得之結果。在該試驗，淬火不銹鋼球、 POM樹脂球雖均會磨耗，但是沒有發現碎片或裂縫等異常 。又，試驗環境，係試驗期間為90天，織機之轉速為 2000rpm，在織機之轉速1200rpm下操作2年。 [表3] 閥構件 材質 淬火不銹鋼球之狀態 POM樹脂球之狀態 1 送出側止動件 氧化锆 無異常 無異常 2 送出側止動件 超硬合金 無異常 無異常 3 送出側閥座 氧化锆 無異常 無異常 4 吸入側止動件 氧化鍅 無異常 無異常 5 吸入侧止動件 超硬合金 無異常 無異常 6 吸入側閥座 氧化锆 無異常 無異常 *試驗條件：轉速2000rpm，使用水量6cc/投緯，水壓 200kgf/cm2 閥體：淬火不銹鋼球（HV830)、POM樹脂球 試驗期間：90天（做出轉速1200rpm環境下之相當於2年 之條件） 除上述以球為閥體3而以線接觸封閉閥口 4之止回閥 以外，亦有構成如圖2以將平板狀（在圖2係圓盤狀）閥體 3裝填於限制空間2内的面接觸封閉閥口 4之止回閥的情 形。此情形之閥體3，在其周緣部設置貫穿表裏之通路10 ，藉由環狀閥座5之内面密合或離開於閥體3之背面來開 關通路10。在閥體3被推擠到限制空間2内時，閥體3之 背面便從閥座5之内面離開，表面密合於止動件6之内面 ，而獲得閥體3之位置固定，故經過閥座5之閥口 4、閥 200422544 體3之背面與閥座5之内面的間隙、閥體3之通路l〇，止 動件6之通路11來確保安定之流體之流通。 由以上之結果能確認：只要將閥體之硬度，設定為比 間座或止動件之硬度為低，便可將閥座以陶瓷形成，對止 動件，亦可以陶瓷或超硬合金形成，對閥體，亦可以不銹 鋼或树如形成。又，亦能確認：亦可以使用以連結止動件 與閥座之連結構件之硬度，比閥座或止動件為低。又，在 本例雖將該各構件以單—之成型品構成，❻是只要在各構 件之接觸部閥體之硬度係比閥座或止動件之硬度為低，各 構件之非接觸部亦可使用與接觸部不同之材料。例如在間 座或止動件亦可將接觸部以㈣形成，將非接觸部以金屬 形成’亦可將間體之接觸部以不銹鋼形成，將非接觸部以 其他金屬形成。 依據以上本發明之止回閥，將閥體之硬度設定為比昇 ::止動件之硬度為低，便能在高速且高頻繁度產生之* 二=由度高之間體的此部分不會一下子大大損傷，$ 保持者平滑之形狀磨耗。如 耗所㈣之裂縫或碎片，能將二閥座或止動件之扇 期間，結果能長期維持防逆=構::密合性維持較長 高。 〗万逆机機月b ’使止回閥之耐久性提 磨耗，故：要止動件之磨耗，僅有較軟質之閥 …二:::限r:::’❹進一 或-亦…對裝仏二:::= 200422544 次損壞。 【圖式簡單說明】 (一）圖式部分 圖1(A)(B)，係表示本發明之止 。 之一例的說明圖 圖2(A)(B)，係表示本發明之止 网之一例的說明圖 圖3，係表示產生喷水之管路之一例的說明圖。 圖4，係表示供水泵之止回閥之使用狀況之一例的說 明圖。 (二）元件代表符號 管路 限制空間 閥體 閥口Results of endurance test Material wear of steel ball _ 1 2 hafnium oxide-oxidation-HV1400 2 years OK HV2000 2 years OK ”type test conditions: speed 800rPm, water volume 7cc / weft input, water pressure 85kgf / cm2 valve Body: Quenched stainless steel ball (HV830). Test period: 2 years from above. Mount Shilishan, if you confirm: In the shape of quenched stainless steel ball (Ην830) = valve body 3, if the material of the moving parts is made of ceramics. Or the cemented carbide has a relatively long durability period M, and it can also be confirmed that by using ceramics as the material of the seat, you will not be eroded. Also, in the endurance test of the stopper and The 7f endurance test is performed when the weft insertion state becomes abnormal (the state of use efficiency ", the number of members is reduced, and the fabric is abnormally increased). The test is considered to have reached the end of life. Table 3 shows the results of the non-wear test. A hardened stainless steel ball (HV830) and a POM resin ball are used as the valve body 3, and any valve seat 5 or a stopper 6 having a higher hardness than the valve body 3 is used. The stopper 6 or valve seat made of various materials is compared. 200422544 5 The result of the wear status. In the test, although quenched stainless steel balls and POM resin balls were worn, no abnormalities such as chips or cracks were found. In addition, the test environment was 90 days during the test, the speed of the loom was 2000 rpm, and the machine was operated at 1200 rpm for 2 years. [Table 3] State of the valve member material Hardened stainless steel ball State of the POM resin ball 1 No abnormality on the side stopper zirconia no abnormality 2 No abnormality on the side stopper hard alloy No abnormality 3 Nozzle zirconia on the outlet side No abnormality No abnormality 4 Suction oxide on the suction side No abnormality No abnormality 5 Abnormal stopper on the suction side No abnormality No abnormality 6 No abnormality on the valve seat zirconia on the suction side No abnormality * Test conditions: 2000 rpm, 6cc of water used / Weft input, water pressure 200kgf / cm2 Valve body: quenched stainless steel ball (HV830), POM resin ball Test period: 90 days (making the condition equivalent to 2 years under the speed of 1200rpm) Except the above, the ball is used as the valve body 3 In addition to the non-return valve that closes the port 4 by line contact, there is also a structure as shown in FIG. 2, in which a flat plate-shaped (disc-shaped in FIG. 2) valve body 3 is filled in the surface contact in the restricted space 2 In the case of a non-return valve that closes the valve port 4. The valve body 3 in this case is provided with a passage 10 through the surface at the periphery, and is opened and closed by the inner surface of the annular valve seat 5 or being separated from the back surface of the valve body 3. Passage 10. When the valve body 3 is pushed into the restricted space 2, the back surface of the valve body 3 is separated from the inner surface of the valve seat 5 and the surface is closely adhered to the inner surface of the stopper 6, so that the position of the valve body 3 is fixed. Therefore, through the gap between the valve port 4 of the valve seat 5, the back of the valve 200422544 body 3 and the inner surface of the valve seat 5, the passage 10 of the valve body 3, and the passage 11 of the stopper 6 to ensure the stable fluid flow. From the above results, it can be confirmed that as long as the hardness of the valve body is set to be lower than the hardness of the seat or the stopper, the valve seat can be formed of ceramic, and the stopper can also be formed of ceramic or superhard alloy. For the valve body, it can also be made of stainless steel or tree. It can also be confirmed that the hardness of the connecting member that connects the stopper and the valve seat may be lower than that of the valve seat or the stopper. In addition, in this example, although each of these members is constituted by a single molded product, as long as the hardness of the valve body at the contact portion of each member is lower than that of the valve seat or the stopper, the non-contact portion of each member It is also possible to use a material different from the contact portion. For example, the contact portion may be formed by a cymbal or the stopper, and the non-contact portion may be formed by a metal. According to the above non-return valve of the present invention, the hardness of the valve body is set to specific liters :: The hardness of the stopper is low, which can be generated at high speed and high frequency * 2 = this part of the body between high Will not be greatly damaged at once, $ holder keeps smooth shape wear. If the cracks or debris are consumed, the two valve seats or the fan of the stopper can be maintained for a long period of time. As a result, the anti-reverse structure can be maintained for a long time. 〖Wanhui machine month b 'to increase the durability of the check valve, so: to stop the wear of the parts, there are only softer valves ... two ::: limit r :::' ❹ 进 一 or-also ... Pairing 2 ::: = 200422544 times damage. [Brief description of the drawings] (I) Schematic parts Figures 1 (A) (B) show the end of the present invention. An explanatory diagram of an example Fig. 2 (A) (B) is an explanatory diagram showing an example of a net stop of the present invention. Fig. 3 is an explanatory diagram showing an example of a pipe generating water spray. Fig. 4 is an explanatory diagram showing an example of a use condition of a check valve of a water supply pump. (II) Symbols of components Piping Restricted space Valve body Valve port
閥座 止動件 止回閥 連結構件 11Seat stop Check valve connecting member 11