CN109098959B - A kind of concrete spraying machine distribution valve arrangement - Google Patents
A kind of concrete spraying machine distribution valve arrangement Download PDFInfo
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- CN109098959B CN109098959B CN201810815009.6A CN201810815009A CN109098959B CN 109098959 B CN109098959 B CN 109098959B CN 201810815009 A CN201810815009 A CN 201810815009A CN 109098959 B CN109098959 B CN 109098959B
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- 239000004567 concrete Substances 0.000 title claims abstract description 48
- 238000005507 spraying Methods 0.000 title claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 23
- 239000003638 chemical reducing agent Substances 0.000 claims abstract 2
- 238000000034 method Methods 0.000 claims description 23
- 238000007789 sealing Methods 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims 1
- 238000005086 pumping Methods 0.000 abstract description 20
- 238000010586 diagram Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 5
- 239000000956 alloy Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/109—Valves; Arrangement of valves inlet and outlet valve forming one unit
- F04B53/1092—Valves; Arrangement of valves inlet and outlet valve forming one unit and one single element forming both the inlet and outlet closure member
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Coating Apparatus (AREA)
- Nozzles (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
Description
技术领域technical field
本发明涉及混凝土湿喷机零件技术领域，尤其是混凝土湿喷机的分配阀结构。The invention relates to the technical field of concrete wet spraying machine parts, in particular to the distribution valve structure of the concrete wet spraying machine.
背景技术Background technique
混凝土泵送构件是运用在喷浆设备中，将混凝土罐车内的混凝土收集,并将混凝土加压输送的机构。运用在煤矿巷道、公路隧道等需要喷浆支护的喷浆设备中，常见的喷浆设备有混凝土湿喷机，混凝土湿喷机的工作原理是通过分配阀切换液压泵来实现泵送，在泵送过程中由于分配阀的摆动，造成泵送过程中的脉冲现象，这增大了喷浆设备泵送过程的堵管机率，并造成喷浆过程中的回弹问题。当采用加设辅助混凝土送料机构的方法解决脉冲及回弹问题时，需要分配阀结构能够满足泵送要求，由此可见，混凝土湿喷机的分配阀结构存在不足，需要改进。The concrete pumping component is used in the spraying equipment to collect the concrete in the concrete tanker and transport the concrete under pressure. Used in coal mine roadways, highway tunnels and other spraying equipment that require spraying support, the common spraying equipment is concrete wet spraying machine. The working principle of concrete wet spraying machine is to realize pumping by switching the hydraulic pump through the distribution valve. Due to the swing of the distribution valve during the pumping process, the pulse phenomenon during the pumping process is caused, which increases the probability of pipe plugging during the pumping process of the spraying equipment and causes the rebound problem during the spraying process. When using the method of adding an auxiliary concrete feeding mechanism to solve the pulse and rebound problems, the distribution valve structure needs to be able to meet the pumping requirements. It can be seen that the distribution valve structure of the concrete wet spraying machine is insufficient and needs to be improved.
发明内容Contents of the invention
为提供一种适用于设置有辅助送料机构的混凝土喷浆设备的分配阀，解决泵送工作过程中存在的脉冲和喷浆回弹问题，本发明提供了一种无脉冲混凝土泵送机构，具体技术方案如下：In order to provide a distribution valve suitable for concrete spraying equipment equipped with an auxiliary feeding mechanism, and to solve the problems of pulse and spray rebound in the pumping process, the present invention provides a pulse-free concrete pumping mechanism, specifically The technical solution is as follows:
一种混凝土湿喷机分配阀结构，包括阀体、分配阀摩擦板、前摩擦板和后摩擦板；所述阀体为变径管结构，阀体前端设置有前摩擦板，阀体后端设置有分配阀摩擦板，分配阀摩擦板与阀体通过卡槽配合安装，后摩擦板与分配阀摩擦板紧密接触；所述后摩擦板上设置2个主送料口和1个辅助送料口，阀体后端管口上部形状与辅助送料口转动扫过的形状相同，阀体后端管口下部形状与主送料口形状相同，管口上部与下部之间呈圆弧状，分配阀摩擦板两翼设置有挡板。A distribution valve structure for a concrete wet spraying machine, including a valve body, a distribution valve friction plate, a front friction plate, and a rear friction plate; Distributing valve friction plate is provided, and the distribution valve friction plate and the valve body are installed through the card slot, and the rear friction plate is in close contact with the distribution valve friction plate; 2 main feeding ports and 1 auxiliary feeding port are set on the rear friction plate, The shape of the upper part of the nozzle at the rear end of the valve body is the same as the shape swept by the auxiliary feeding port. The shape of the lower part of the nozzle at the rear end of the valve body is the same as that of the main feeding port. The two wings are provided with baffles.
优选的是，分配阀摩擦板与阀体之间设置橡胶弹簧，阀体与前摩擦板之间设置有密封圈。Preferably, a rubber spring is arranged between the distribution valve friction plate and the valve body, and a sealing ring is arranged between the valve body and the front friction plate.
优选的是，分配阀摩擦板两翼挡板的面积大于主送料口的面积。Preferably, the area of the baffles on both wings of the friction plate of the distribution valve is larger than the area of the main feeding port.
优选的是，分配阀摩擦板上通孔形状与分配阀后摩擦板形状相同。Preferably, the shape of the through hole on the friction plate of the distribution valve is the same as that of the rear friction plate of the distribution valve.
优选的是，阀体上部设置有芯轴安装部，所述芯轴安装部通过花键与芯轴连接，芯轴带动分配阀摆动。Preferably, a mandrel installation part is provided on the upper part of the valve body, and the mandrel installation part is connected with the mandrel through a spline, and the mandrel drives the distribution valve to swing.
优选的是，阀体在摆动过程中，阀体在左极限位置时阀体后端下部与左侧主送料口重合；阀体在右极限位置时阀体后端下部与右侧主送料口重合；阀体在中间位置时阀体后端下部在2个主送料口之间位置时，分配阀两翼挡板遮挡两侧的主送料口。Preferably, during the swinging process of the valve body, when the valve body is in the left limit position, the lower part of the rear end of the valve body coincides with the left main feeding port; when the valve body is in the right limit position, the lower part of the rear end of the valve body coincides with the right main feeding port ; When the valve body is in the middle position, when the lower part of the rear end of the valve body is between the two main feeding ports, the two wing baffles of the distribution valve block the main feeding ports on both sides.
还优选的是，阀体设置在混凝土湿喷机的料室内，分配阀前端开口形状与分配阀摆动扫过的出料口形状相同。It is also preferable that the valve body is arranged in the material chamber of the concrete wet spraying machine, and the shape of the opening at the front end of the distribution valve is the same as the shape of the outlet swept by the distribution valve.
本发明的有益效果包括：(1)在分配阀的前后均设置有摩擦板，摩擦板由密质合金制作，加强了密封并防止了分配阀摆动造成磨损过快，延长了设备使用寿命，分配阀摩擦板与分配阀之间设置橡胶弹簧，保证了分配阀在摆动过程中的稳定。(2)分配阀的前端和后端采用不同的形状、不同的管径，保证了分配阀摆动过程中泵料的稳定转换。(3)阀体与前摩擦板之间设置有密封圈，保证了分配阀摆动过程中阀体腔内的密封性，保证了泵送物料过程中压力的稳定。(4)分配阀在摆动过程中，当阀体仅与辅助送料口连通时，分配阀摩擦板两翼的挡板遮挡主送料口，通过辅助送料口送料，保证的辅助泵送物料的稳定，从而避免了湿喷机泵送过程中的脉冲问题及喷浆回弹问题。The beneficial effects of the present invention include: (1) Friction plates are arranged at the front and back of the distributing valve, and the friction plates are made of dense alloy, which strengthens the seal and prevents the distributing valve from swinging to cause excessive wear, thereby prolonging the service life of the equipment and distributing A rubber spring is set between the valve friction plate and the distributing valve to ensure the stability of the distributing valve during the swing process. (2) The front and rear ends of the distributing valve adopt different shapes and different pipe diameters to ensure the stable conversion of pump materials during the swinging process of the distributing valve. (3) There is a sealing ring between the valve body and the front friction plate, which ensures the sealing of the valve body cavity during the swinging process of the distribution valve and the stability of the pressure during the pumping process. (4) During the swinging process of the distribution valve, when the valve body is only connected to the auxiliary feeding port, the baffles on the two wings of the friction plate of the distribution valve block the main feeding port, and the material is fed through the auxiliary feeding port to ensure the stability of the auxiliary pumped material, thereby It avoids the pulse problem and the grout rebound problem in the pumping process of the wet spray machine.
附图说明Description of drawings
图1是分配阀结构安装示意图；Figure 1 is a schematic diagram of the structure and installation of the distribution valve;
图2是分配阀摆动结构示意图；Fig. 2 is a schematic diagram of the distribution valve swing structure;
图3是分配阀阀体结构示意图；Fig. 3 is a schematic diagram of the distribution valve body structure;
图4是分配阀后摩擦板结构示意图；Fig. 4 is a schematic structural diagram of the friction plate behind the distribution valve;
图5是分配阀摩擦板结构示意图；Fig. 5 is a schematic structural diagram of the distribution valve friction plate;
图6是分配阀前摩擦板结构示意图；Fig. 6 is a schematic diagram of the structure of the friction plate in front of the distribution valve;
图7是分配阀结构的混凝土泵送构件结构示意图Figure 7 is a structural schematic diagram of the concrete pumping component of the distribution valve structure
图中：1-摆动构件；11-摆臂；12-芯轴；13-芯轴盖；2-泵送构件；21-料室；22-分配阀结构；221-阀体；222-前摩擦板；223-后摩擦板；224-分配阀摩擦板；225-橡胶弹簧；226-密封圈；23-主送料结构；231-混凝土缸活塞；232-主液压缸；233-混凝土缸；24-辅助送料结构；241-辅助混凝土缸活塞；242-辅助液压缸；243-辅助混凝土缸；25-出料口；261-主送料口；262-辅助送料口。In the figure: 1-swing member; 11-swing arm; 12-mandrel; 13-mandrel cover; 2-pumping member; 21-material chamber; 22-distribution valve structure; 221-valve body; 222-front friction 223-rear friction plate; 224-distribution valve friction plate; 225-rubber spring; 226-sealing ring; 23-main feeding structure; 231-concrete cylinder piston; 232-main hydraulic cylinder; 233-concrete cylinder; 24- Auxiliary feeding structure; 241-auxiliary concrete cylinder piston; 242-auxiliary hydraulic cylinder; 243-auxiliary concrete cylinder;
具体实施方式Detailed ways
结合图1至图7所示，本发明所述的一种混凝土湿喷机分配阀结构具体实施方式如下。Referring to Fig. 1 to Fig. 7, the specific implementation of the distribution valve structure of a concrete wet spraying machine according to the present invention is as follows.
实施例1Example 1
如图1至图6所示，混凝土湿喷机分配阀结构具体包括阀体221、分配阀摩擦板224、前摩擦板222和后摩擦板223，其中阀体221为变径管结构，阀体221前端设置有前摩擦板222，阀体221后端设置有分配阀摩擦板224，分配阀摩擦板224与阀体221通过卡槽配合安装，后摩擦板223与分配阀摩擦板224紧密接触。阀体221的前端是指阀体的出料端，与出料口25相连；阀体的后端是指送料端，与2个主送料口和1个辅助送料口相连。分配阀结构的后摩擦板223上设置2个主送料口和1个辅助送料口，阀体221后端管口上部形状与辅助送料口转动扫过的形状相同，阀体221后端管口下部形状与主送料口形状相同，管口上部与下部之间呈圆弧状，分配阀摩擦板224两翼设置有挡板。阀体的前端和后端采用不同的形状，保证了分配阀摆动过程中泵料的稳定。As shown in Figures 1 to 6, the distribution valve structure of the concrete wet spraying machine specifically includes a valve body 221, a distribution valve friction plate 224, a front friction plate 222 and a rear friction plate 223, wherein the valve body 221 is a variable diameter pipe structure, and the valve body The front end of 221 is provided with a front friction plate 222, and the rear end of the valve body 221 is provided with a distribution valve friction plate 224. The distribution valve friction plate 224 is fitted with the valve body 221 through a slot, and the rear friction plate 223 is in close contact with the distribution valve friction plate 224. The front end of the valve body 221 refers to the discharge end of the valve body, which is connected to the discharge port 25; the rear end of the valve body refers to the feed end, which is connected to 2 main feed ports and 1 auxiliary feed port. The rear friction plate 223 of the distributing valve structure is provided with 2 main feeding ports and 1 auxiliary feeding port. The shape is the same as that of the main feeding port, the upper part and the lower part of the nozzle are arc-shaped, and the two wings of the friction plate 224 of the distribution valve are provided with baffles. The front and rear ends of the valve body adopt different shapes to ensure the stability of the pump material during the swinging process of the distribution valve.
阀体221上方设置有芯轴安装部，芯轴安装部通过花键与芯轴12连接，芯轴12带动分配阀摆动。阀体221在摆动过程中，阀体221在左极限位置时阀体后端下部与左侧主送料口重合；阀体221在右极限位置时阀体后端下部与右侧主送料口重合；阀体221在中间位置时阀体后端下部在2个主送料口之间，分配阀摩擦板224两翼挡板遮挡两侧的主送料口。分配阀在摆动过程中，当阀体221仅与辅助送料口连通时，分配阀摩擦板两翼的挡板遮挡主送料口，通过辅助送料口送料，保证的辅助泵送物料的稳定，从而避免了湿喷机泵送过程中的脉冲问题及喷浆回弹问题。A mandrel installation part is arranged above the valve body 221, and the mandrel installation part is connected with the mandrel 12 through a spline, and the mandrel 12 drives the distribution valve to swing. During the swinging process of the valve body 221, when the valve body 221 is at the left limit position, the lower part of the rear end of the valve body coincides with the left main feeding port; when the valve body 221 is at the right limit position, the lower part of the valve body rear end coincides with the right main feeding port; When the valve body 221 is in the middle position, the lower part of the rear end of the valve body is between the two main feeding ports, and the two wing baffles of the distribution valve friction plate 224 block the main feeding ports on both sides. During the swinging process of the distribution valve, when the valve body 221 is only connected to the auxiliary feeding port, the baffles on the two wings of the friction plate of the distribution valve block the main feeding port, and the material is fed through the auxiliary feeding port to ensure the stability of the auxiliary pumped material, thereby avoiding The pulse problem in the pumping process of the wet spray machine and the rebound problem of the shotcrete.
分配阀摩擦板224与阀体221之间设置橡胶弹簧，阀体221与前摩擦板222之间设置有密封圈226。分配阀摩擦板224两翼挡板的面积大于主送料口的面积。分配阀摩擦224板上通孔形状与分配阀后摩擦板形状相同。还优选的是，阀体221设置在混凝土湿喷机的料室内，分配阀前端开口形状与分配阀摆动扫过的出料口形状相同。在阀体的前后均设置有摩擦板，摩擦板由密质合金制作，加强了密封并防止了分配阀摆动造成磨损过快，延长了设备使用寿命，分配阀摩擦板与分配阀之间设置橡胶弹簧，保证了分配阀在摆动过程中的稳定。A rubber spring is arranged between the distribution valve friction plate 224 and the valve body 221 , and a sealing ring 226 is arranged between the valve body 221 and the front friction plate 222 . The area of the distribution valve friction plate 224 two wing baffles is greater than the area of the main feed port. The shape of the through hole on the friction plate 224 of the distribution valve is the same as that of the rear friction plate of the distribution valve. It is also preferable that the valve body 221 is arranged in the material chamber of the concrete wet spraying machine, and the shape of the opening at the front end of the distribution valve is the same as the shape of the discharge port swept by the distribution valve. There are friction plates at the front and back of the valve body. The friction plates are made of dense alloy, which strengthens the seal and prevents the distribution valve from swinging to cause excessive wear and prolongs the service life of the equipment. Rubber is installed between the distribution valve friction plate and the distribution valve. The spring ensures the stability of the distribution valve during the swing process.
实施例2Example 2
如图1至图7所示，设置有上述分配阀结构的混凝土泵送构件，泵送构件2的阀体221设置在料室21内，2个主送料结构23设置在料室21的侧面，主送料结构23包括主主液压缸234、混凝土活塞231和混凝土缸233，2个主送料结构23的混凝土缸233沿同一水平设置在料室21的侧面，与料室21相连。主送料结构23的后侧安装有水洗槽27，辅助送料结构24安装在主送料结构23的上方。混凝土湿喷机分配阀结构设置在料室21内，混凝土湿喷机分配阀结构包括阀体221、后摩擦板223、分配阀摩擦板224、橡胶弹簧225、密封圈226和前摩擦板222，分配阀摩擦板224与阀体221之间设置橡胶弹簧225，阀体221与前摩擦板222之间设置有密封圈226，其中密封圈226为肾形圈。出料口25设置在料室21与混凝土缸233连通的对侧，阀体与前摩擦板之间设置有密封圈226，阀体的两端分别设置有前摩擦板222、分配阀摩擦板224和后摩擦板223。在阀体的前后均设置有摩擦板，摩擦板由密质合金制作，加强了密封并防止了分配阀摆动造成磨损过快，延长了设备使用寿命，分配阀摩擦板224与阀体之间设置橡胶弹簧225，保证了阀体在摆动过程中的稳定。As shown in Figures 1 to 7, the concrete pumping member provided with the above distribution valve structure, the valve body 221 of the pumping member 2 is arranged in the material chamber 21, and two main feeding structures 23 are arranged on the side of the material chamber 21, The main feeding structure 23 includes a main main hydraulic cylinder 234, a concrete piston 231 and a concrete cylinder 233. The concrete cylinders 233 of the two main feeding structures 23 are arranged on the side of the material chamber 21 along the same level and are connected with the material chamber 21. A washing tank 27 is installed on the rear side of the main feeding structure 23 , and the auxiliary feeding structure 24 is installed above the main feeding structure 23 . The distribution valve structure of the concrete wet spraying machine is arranged in the material chamber 21, and the distribution valve structure of the concrete wet spraying machine includes a valve body 221, a rear friction plate 223, a distribution valve friction plate 224, a rubber spring 225, a sealing ring 226 and a front friction plate 222, A rubber spring 225 is arranged between the distribution valve friction plate 224 and the valve body 221 , and a sealing ring 226 is arranged between the valve body 221 and the front friction plate 222 , wherein the sealing ring 226 is a kidney-shaped ring. The discharge port 25 is set on the opposite side where the material chamber 21 communicates with the concrete cylinder 233, a sealing ring 226 is set between the valve body and the front friction plate, and the front friction plate 222 and the distribution valve friction plate 224 are respectively set at both ends of the valve body. And rear friction plate 223. There are friction plates at the front and back of the valve body. The friction plates are made of dense alloy, which strengthens the seal and prevents the distribution valve from swinging to cause excessive wear and prolongs the service life of the equipment. The distribution valve friction plate 224 and the valve body are installed The rubber spring 225 ensures the stability of the valve body during the swing process.
泵送构件2的阀体设置在料室21内，连通混凝土缸233和辅助混凝土缸243的送料口与出料口25。阀体与出料口25连接一侧设置有前摩擦板222，阀体与主送料结构23的混凝土缸233连接一侧设置有分配阀摩擦板224，料室21与阀体221之间还设置有后摩擦板223，其中前摩擦板222设置有一个与出料口25直径相同的通孔，后摩擦板223上设有两个大于或等于主液压部件的混凝土缸233管径的主送料口，以及1个大于或等于辅助液压部件的辅助混凝土缸243管径的辅助送料口。泵送构件2的阀体主体具体为变径管，阀体221的前端开口形状与阀体221摆动扫过的出料口25形状相同，阀体221后端开口上部形状与阀体221摆动扫过的辅助送料口243的形状相同，阀体221后端开口下部形状与阀体221摆动扫过的主送料口的形状相同。其中阀体前端为分配阀与出料口连接端，阀体221后端为分配阀与其中一个主送料口和辅助送料口的连接端。优选的是，芯轴12为中部呈方形两端呈圆形的管状结构，芯轴12的方形段通过芯轴盖13与阀体221上部的卡槽配合安装，通过螺母固定芯轴盖13；阀体221跟随芯轴12摆动。摆臂11通过花键与芯轴配合安装，芯轴12通过芯轴盖13与阀体221上部的卡槽配合安装，使得芯轴12跟随摆臂11有效摆动。阀体221随摆动构件的芯轴12摆动，摆动过程中阀体221的前端始终与出料口25相通，阀体221的后端与其中一个主送料口和辅助送料口相通，用于泵送物料，通过设计合理的分配阀形状，使得分配阀在摆动过程中连通混凝土缸233和辅助混凝土缸243与出料口25，并能保持阀体221的密封，特别是辅助混凝土缸243始终连通分配阀管腔，从而保证泵送物料的连续性。The valve body of the pumping component 2 is arranged in the feed chamber 21 and communicates with the feed port and the discharge port 25 of the concrete cylinder 233 and the auxiliary concrete cylinder 243 . A front friction plate 222 is provided on the side where the valve body is connected to the discharge port 25, a distribution valve friction plate 224 is provided on the side where the valve body is connected to the concrete cylinder 233 of the main feeding structure 23, and a friction plate 224 is provided between the material chamber 21 and the valve body 221 There is a rear friction plate 223, wherein the front friction plate 222 is provided with a through hole with the same diameter as the discharge port 25, and the rear friction plate 223 is provided with two main feed ports that are larger than or equal to the pipe diameter of the concrete cylinder 233 of the main hydraulic component , and an auxiliary feed port with a pipe diameter greater than or equal to the auxiliary concrete cylinder 243 of the auxiliary hydraulic component. The main body of the valve body of the pumping member 2 is specifically a variable diameter pipe. The shape of the front opening of the valve body 221 is the same as the shape of the discharge port 25 swept by the valve body 221, and the shape of the upper part of the rear opening of the valve body 221 is the same as that of the valve body 221. The shape of the auxiliary feeding port 243 passed is the same, and the shape of the lower part of the opening of the rear end of the valve body 221 is the same as that of the main feeding port swept by the valve body 221. The front end of the valve body is the connection end between the distribution valve and the material outlet, and the rear end of the valve body 221 is the connection end between the distribution valve and one of the main material feeding ports and the auxiliary material feeding port. Preferably, the mandrel 12 is a tubular structure with a square in the middle and a circle at both ends, the square section of the mandrel 12 is installed through the mandrel cover 13 and the slot on the upper part of the valve body 221, and the mandrel cover 13 is fixed by a nut; The valve body 221 swings following the spindle 12 . The swing arm 11 is fitted with the mandrel through a spline, and the mandrel 12 is fitted with the slot on the upper part of the valve body 221 through the mandrel cover 13 , so that the mandrel 12 follows the swing arm 11 to effectively swing. The valve body 221 swings with the mandrel 12 of the swing member. During the swing process, the front end of the valve body 221 is always connected with the discharge port 25, and the rear end of the valve body 221 is connected with one of the main feeding port and the auxiliary feeding port for pumping. Material, by designing a reasonable distribution valve shape, the distribution valve connects the concrete cylinder 233, the auxiliary concrete cylinder 243 and the discharge port 25 during the swing process, and can keep the valve body 221 sealed, especially the auxiliary concrete cylinder 243 is always connected and distributed The valve lumen ensures the continuity of the pumped material.
本发明中未述及的部分采用或借鉴已有技术即可实现。The parts not mentioned in the present invention can be realized by adopting or referring to the prior art.
当然，上述说明并非是对本发明的限制，本发明也并不仅限于上述举例，本技术领域的技术人员在本发明的实质范围内所做出的变化、改型、添加或替换，也应属于本发明的保护范围。Of course, the above descriptions are not intended to limit the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or replacements made by those skilled in the art within the scope of the present invention shall also belong to the present invention. protection scope of the invention.
Claims (7)
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| CN112392718A (en) * | 2020-11-24 | 2021-02-23 | 徐州徐工施维英机械有限公司 | Pumping switching device and concrete pumping equipment |
| CN118442461B (en) * | 2024-07-04 | 2024-08-30 | 湖南启力隧道机械有限公司 | Distributing valve structure of concrete wet spraying machine |
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| US3663129A (en) * | 1970-09-18 | 1972-05-16 | Leon A Antosh | Concrete pump |
| DE2933128C2 (en) * | 1979-08-16 | 1985-09-26 | Friedrich Wilh. Schwing Gmbh, 4690 Herne | Thick matter pump, especially for pumping concrete |
| DE3219882A1 (en) * | 1982-05-27 | 1983-12-01 | Maschinenfabrik Walter Scheele GmbH & Co KG, 4750 Unna-Massen | Concrete pump |
| DE19503986A1 (en) * | 1995-02-07 | 1996-08-08 | Hudelmaier Ulrike | Method and device for conveying concrete or other thick materials |
| KR100626805B1 (en) * | 2005-05-13 | 2006-09-20 | 임영철 | Piston concrete pump |
| CN102588243A (en) * | 2012-03-15 | 2012-07-18 | 三一重工股份有限公司 | Engineering machinery, material pumping system and pumping method for material pumping system |
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