A distribution valve for a concrete pump

Abstract

The utility model discloses a distribution valve for concrete pump relates to concrete delivery technical field, including distribution valve body, it includes valve core body and hopper, valve core body is used for realizing the reversal and distribution of concrete between delivery cylinder and delivery pipeline, sealing washer, it is used for sealing the gap between valve core body and hopper, can through the screwing of two screw nails and make the support assembly and valve core body separate fixed, then according to the actual tolerance of hopper and valve core body end adjusts the specific position of support assembly, adjusts the extrusion of spring to extrusion assembly through the position of support assembly on valve core body, and then adjusts the extrusion of extrusion assembly to sealing washer, finally realizes the effect of adjusting the extrusion between sealing washer and hopper inner wall, solves the sealing washer between the valve core body and hopper of existing concrete pump distribution valve and cannot adjust the extrusion, the problem of influence S shape valve core and the sealing effect between hopper.

Description

Technical Field

[0001] This utility model relates to the field of concrete conveying technology, and in particular to a distribution valve for a concrete pump. Background Technology

[0002] Concrete pumps, as the core equipment for concrete transportation, are widely used in construction engineering, bridge construction, tunnel construction and other fields. The distribution valve is one of the key components of the concrete pump. Its main function is to realize the switching and distribution of concrete between the conveying cylinder and the conveying pipeline, which directly affects the conveying efficiency, working stability and service life of the concrete pump.

[0003] Commonly used distribution valves for concrete pumps on the market mainly include gate valves, S-valve valves, and swing valves. Among them, the S-valve is widely used in medium and high pressure concrete pumps due to its smooth flow path and low conveying resistance. It achieves material reversal through the rotation of the S-shaped valve core.

[0004] However, the sealing of existing S-valve mainly relies on the fit between the valve core and the wear-resistant plate. During the installation of the S-shaped valve core, a certain gap is left between its feed end and the hopper for stability. The sealing ring is set at the feed end of the S-shaped valve core before installation. Since the sealing ring itself has a certain elasticity, it can deform during installation without affecting the installation of the S-shaped valve core. However, this installation method limits the compressive force on the sealing ring after installation. Excessive pressure on the sealing ring from the S-shaped valve core and the inner wall of the hopper will cause the friction of the sealing ring to increase when the S-shaped valve core changes position. Insufficient pressure will affect the sealing effect. Moreover, the gap between the existing S-shaped valve core and the hopper often has a certain error during production, which leads to inconsistent pressure on the sealing ring. It is impossible to control the compressive force between the sealing ring and the inner wall of the hopper according to the actual situation, which will affect the sealing effect between the S-shaped valve core and the hopper. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a distribution valve for concrete pumps, which solves the problem that the sealing ring between the S-shaped valve core and the hopper in existing concrete pump distribution valves cannot adjust the extrusion pressure, thus affecting the sealing effect between the S-shaped valve core and the hopper.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A distribution valve for a concrete pump, comprising: The distribution valve body, which is existing technology, includes a valve core body and a hopper, as well as a conveying cylinder, a conveying pipe, a swing shaft, etc. The hopper is used to temporarily store concrete, and the valve core body is used to realize the reversal and distribution of concrete between the conveying cylinder and the conveying pipe. A sealing ring, which is used to seal the gap between the valve core body and the hopper, continuously applies pressure to the inner wall of the hopper. The sealing ring can move in a first direction, which is horizontal to the ground. A compression mechanism for installing a sealing ring, which can continuously apply pressure to the sealing ring, the compression mechanism includes a compression assembly that can move in a first direction and the first direction is parallel to the central axis of the sealing ring.

[0007] Preferably, one end of the valve core body is provided with four sets of circular slots, with two circular slots in each set.

[0008] Preferably, the extrusion assembly includes an extrusion ring, and four protrusions are fixedly connected to the circumferential surface of the extrusion ring by welding. Both the protrusions and the extrusion ring are made of stainless steel and are used to push the sealing ring to adhere to the hopper.

[0009] Preferably, one side of each of the four protrusions is fixedly connected to a guide rod by welding. The guide rod is a columnar structure made of stainless steel. All four guide rods can work with the protrusions to guide the extrusion ring.

[0010] Preferably, a cavity for mounting the extrusion ring is opened on the side away from the guide rod, and a sealing ring is fitted inside the guide rod. Both the extrusion ring and the sealing ring are fitted onto the feed end of the valve core body, and the sealing ring seals the valve core body in the hopper.

[0011] Preferably, the extrusion mechanism includes a support assembly, which includes a support ring. The support ring is a ring structure made of stainless steel. Four protrusions are fixedly connected to the circumferential surface of the support ring by welding. Each of the four protrusions has a through hole on its surface.

[0012] Preferably, the four guide rods are slidably sleeved inside the through holes opened in the four protrusions.

[0013] Preferably, the extrusion mechanism includes a spring, with both ends of the spring fixedly connected to protrusion one and protrusion two by welding, and a guide rod sleeved on the inner side of the spring.

[0014] Preferably, the outer surface of the support ring is fixedly connected to two screw sleeves by welding, and both screw sleeves are threaded with screws.

[0015] Preferably, two screws are respectively engaged with two of the four sets of circular slots, the support ring is slidably engaged with the feed end of the valve core body, the support assembly can be fixed by screws and circular slots, the support assembly can move on the valve core body, the pressure of the spring on the extrusion assembly is adjusted by adjusting the position of the support assembly on the valve core body, thereby adjusting the pressure of the extrusion assembly on the sealing ring, and finally achieving the effect of adjusting the pressure between the sealing ring and the inner wall of the hopper.

[0016] This application uses a valve core body to realize the reversal and distribution of concrete between the conveying cylinder and the conveying pipeline. After the valve core body is installed into the hopper, the support component can be detached from the valve core body by tightening two screws. Then, the specific position of the support component is adjusted according to the actual tolerance between the hopper and the valve core body. By adjusting the position of the support component on the valve core body, the squeezing force of the spring on the extrusion component is adjusted, which in turn adjusts the squeezing force of the extrusion component on the sealing ring. Finally, the squeezing force between the sealing ring and the inner wall of the hopper is adjusted, which solves the problem that the existing concrete pump distribution valve's S-shaped valve core and the hopper cannot adjust the squeezing force of the sealing ring, thus affecting the sealing effect between the S-shaped valve core and the hopper. Attached Figure Description

[0017] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a structural diagram of the distribution valve body and the extrusion mechanism of this utility model; Figure 3 This is a structural diagram of the valve core body of this utility model; Figure 4 This is a structural diagram of the extrusion mechanism and sealing ring of this utility model; Figure 5 This is an exploded structural diagram of the extrusion mechanism of this utility model.

[0019] Legend: 100, Distributor valve body; 101, Valve core body; 102, Circular slot; 200, Extrusion mechanism; 210, Extrusion assembly; 211, Extrusion ring; 212, Mounting cavity; 213, Protrusion one; 214, Guide rod; 220, Support assembly; 221, Support ring; 222, Protrusion two; 223, Screw sleeve; 224, Screw; 230, Spring; 300, Sealing ring. Detailed Implementation

[0020] This application provides a distribution valve for concrete pumps, which effectively solves the problem that the sealing ring between the S-shaped valve core and the hopper in existing concrete pump distribution valves cannot adjust the extrusion pressure, thus affecting the sealing effect between the S-shaped valve core and the hopper.

[0021] Example 1 The sealing of existing S-valve mainly relies on the fit between the valve core and the wear-resistant plate. During the installation of the S-shaped valve core, a certain gap is left between its feed end and the hopper for stability. The sealing ring is set at the feed end of the S-shaped valve core before installation. Since the sealing ring itself has a certain elasticity, it can deform during installation without affecting the installation of the S-shaped valve core. However, this installation method limits the compressive force on the sealing ring after installation. Excessive pressure on the sealing ring from the S-shaped valve core and the inner wall of the hopper will cause the friction of the sealing ring to increase when the S-shaped valve core changes position. Insufficient pressure will affect the sealing effect. Moreover, the gap between the existing S-shaped valve core and the hopper often has a certain error during production, which leads to inconsistent pressure on the sealing ring. It is impossible to control the compressive force between the sealing ring and the inner wall of the hopper according to the actual situation, which will affect the sealing effect between the S-shaped valve core and the hopper.

[0022] To address the problems existing in the prior art, this utility model provides a distribution valve for a concrete pump; like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the distribution valve for the concrete pump includes a distribution valve body 100, an extrusion mechanism 200, and a sealing ring 300. The distribution valve body 100 includes a valve core body 101 and a hopper. The valve core body 101 is used to realize the reversal and distribution of concrete between the conveying cylinder and the conveying pipeline. The sealing ring 300 is used to seal the gap between the valve core body 101 and the hopper. It continuously applies pressure to the inner wall of the hopper. The sealing ring 300 can move in a first direction, which is horizontal to the ground. The extrusion mechanism 200 is used to install the sealing ring 300. It can continuously apply pressure to the sealing ring 300. The extrusion mechanism 200 includes an extrusion assembly 210. The extrusion assembly 210 can move in the first direction, and the first direction is parallel to the central axis of the sealing ring 300.

[0023] like Figure 2 and Figure 3 As shown, the distribution valve for the concrete pump includes a distribution valve body 100, which is the prior art. It includes a valve core body 101 and a hopper, as well as a conveying cylinder, a conveying pipe, a swing shaft, etc. The hopper is used to temporarily store concrete, and the valve core body 101 is used to realize the reversal and distribution of concrete between the conveying cylinder and the conveying pipe. like Figure 2 and Figure 4 As shown, the distribution valve for the concrete pump includes a sealing ring 300, which is used to seal the gap between the valve core body 101 and the hopper, and continuously applies pressure to the inner wall of the hopper. The sealing ring 300 can move in a first direction, which is horizontal to the ground. like Figure 2 , Figure 4 and Figure 5As shown, the distribution valve for the concrete pump includes a compression mechanism 200 for installing a sealing ring 300, which can continuously apply pressure to the sealing ring 300. The compression mechanism 200 includes a compression assembly 210, which can move in a first direction and is parallel to the central axis of the sealing ring 300.

[0024] like Figure 2 and Figure 3 As shown, one end of the valve core body 101 is provided with four sets of circular slots 102, and each set of circular slots 102 has two slots.

[0025] like Figure 2 , Figure 4 and Figure 5 As shown, the extrusion assembly 210 includes an extrusion ring 211. Four protrusions 213 are fixedly connected to the circumferential surface of the extrusion ring 211 by welding. Both the protrusions 213 and the extrusion ring 211 are made of stainless steel and are used to push the sealing ring 300 to fit tightly against the hopper.

[0026] like Figure 2 , Figure 4 and Figure 5 As shown, guide rods 214 are fixedly connected to one side of each of the four protrusions 213 by welding. The guide rods 214 are columnar structures made of stainless steel. All four guide rods 214 can cooperate with protrusions 222 to guide the extrusion ring 211.

[0027] like Figure 2 , Figure 4 and Figure 5 As shown, the extrusion ring 211 has a cavity 212 for mounting on the side away from the guide rod 214. The sealing ring 300 is sleeved on the inner side of the guide rod 214. Both the extrusion ring 211 and the sealing ring 300 are sleeved on the feed end of the valve core body 101. The sealing ring 300 seals the valve core body 101 in the hopper.

[0028] like Figure 2 , Figure 4 and Figure 5 As shown, the extrusion mechanism 200 includes a support component 220, which includes a support ring 221. The support ring 221 is an annular structure made of stainless steel. Four protrusions 222 are fixedly connected to the circumferential surface of the support ring 221 by welding. Each of the four protrusions 222 has a through hole on its surface.

[0029] like Figure 2 , Figure 4 and Figure 5 As shown, the four guide rods 214 are slidably sleeved on the inside of the through holes opened by the four protrusions 222.

[0030] like Figure 2 , Figure 4 and Figure 5 As shown, the extrusion mechanism 200 includes a spring 230. The two ends of the spring 230 are fixedly connected to the first protrusion 213 and the second protrusion 222 by welding, respectively. The guide rod 214 is sleeved on the inner side of the spring 230.

[0031] like Figure 2 , Figure 4 and Figure 5 As shown, the outer surface of the support ring 221 is fixedly connected to two screw sleeves 223 by welding, and both screw sleeves 223 are threaded with screws 224.

[0032] like Figure 2 , Figure 4 and Figure 5 As shown, two screws 224 are respectively engaged with two of the four sets of circular slots 102. The support ring 221 is slidably engaged with the feed end of the valve core body 101. The support assembly 220 can be fixed by the screws 224 in conjunction with the circular slots 102. The support assembly 220 can move on the valve core body 101. By adjusting the position of the support assembly 220 on the valve core body 101, the pressure of the spring 230 on the extrusion assembly 210 is adjusted, thereby adjusting the pressure of the extrusion assembly 210 on the sealing ring 300, and finally achieving the effect of adjusting the pressure between the sealing ring 300 and the inner wall of the hopper.

[0033] This application uses the valve core body 101 to realize the reversal and distribution of concrete between the conveying cylinder and the conveying pipeline. After the valve core body 101 is installed into the hopper, the support component 220 can be disengaged from the valve core body 101 by turning two screws 224. Then, the specific position of the support component 220 is adjusted according to the actual tolerance between the hopper and the valve core body 101. By adjusting the position of the support component 220 on the valve core body 101, the squeezing force of the spring 230 on the extrusion component 210 is adjusted, thereby adjusting the squeezing force of the extrusion component 210 on the sealing ring 300. Finally, the effect of adjusting the squeezing force between the sealing ring 300 and the inner wall of the hopper is achieved. The spring 230 only plays a squeezing role during installation. However, in this application for a concrete pump, some concrete will adhere to the surface of the extrusion mechanism 200. After the concrete solidifies, it will fix the spring 230, thereby fixing the positions of the extrusion component 210 and the support component 220, so that the pressure between the sealing ring 300 and the hopper remains fixed during actual use.

[0034] The above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A distribution valve for a concrete pump, characterized in that, include; The distribution valve body (100) includes a valve core body (101) and a hopper. The valve core body (101) is used to realize the reversal and distribution of concrete between the conveying cylinder and the conveying pipeline. A sealing ring (300) is used to seal the gap between the valve core body (101) and the hopper, and it continuously applies pressure to the inner wall of the hopper. The sealing ring (300) can move in a first direction, which is horizontal to the ground. A pressing mechanism (200) for installing a sealing ring (300) and for continuously applying pressure to the sealing ring (300) includes a pressing assembly (210) that is movable in a first direction and is parallel to the central axis of the sealing ring (300).

2. The distribution valve for a concrete pump as described in claim 1, characterized in that: The valve core body (101) has four sets of circular slots (102) at one end, with two circular slots in each set.

3. A distribution valve for a concrete pump as described in claim 2, characterized in that: The extrusion assembly (210) includes an extrusion ring (211), and four protrusions (213) are fixedly connected to the circumferential surface of the extrusion ring (211).

4. A distribution valve for a concrete pump as described in claim 3, characterized in that: A guide rod (214) is fixedly connected to one side of each of the four protrusions (213).

5. A distribution valve for a concrete pump as described in claim 4, characterized in that: The extrusion ring (211) has a cavity (212) for installation on the side away from the guide rod (214). The sealing ring (300) is sleeved on the inner side of the guide rod (214). Both the extrusion ring (211) and the sealing ring (300) are sleeved on the feed end of the valve core body (101).

6. A distribution valve for a concrete pump as described in claim 5, characterized in that: The extrusion mechanism (200) includes a support assembly (220), which includes a support ring (221). Four protrusions (222) are fixedly connected to the circumferential surface of the support ring (221), and each of the four protrusions (222) has a through hole.

7. A distribution valve for a concrete pump as described in claim 6, characterized in that: The four guide rods (214) are respectively slidably sleeved on the inside of the through holes opened by the four protrusions (222).

8. A distribution valve for a concrete pump as described in claim 7, characterized in that: The extrusion mechanism (200) includes a spring (230), the two ends of which are fixedly connected to protrusion one (213) and protrusion two (222) by welding, and the guide rod (214) is sleeved on the inner side of the spring (230).

9. A distribution valve for a concrete pump as described in claim 8, characterized in that: The outer surface of the support ring (221) is fixedly connected with two screw sleeves (223), and both screw sleeves (223) are threaded with screws (224).

10. A distribution valve for a concrete pump as described in claim 9, characterized in that: The two screws (224) are respectively fitted into two of the four sets of circular slots (102), and the support ring (221) is slidably fitted into the feed end of the valve core body (101).

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