Valve body device with rotary valve axis positioning function

Abstract

The utility model discloses a valve body device with a rotary valve axis positioning function. The valve body device comprises a rotary valve mechanism and a driving mechanism. The rotary valve mechanism consists of a positioning seat, a cavity and a valve core; the positioning seat is provided with a left positioning plate, a right positioning plate, a left positioning pin, a right positioning pin, a left pin hole, a right screw hole and a positioning pin bolt; the cavity is provided with a left positioning groove, a right positioning groove, a cavity left-right penetrating hole, a penetrating pin hole, a positioning clamp, a shaft sleeve, a front flange, an upper flange and a pump body connecting hole. The valve core is provided with upper and lower coupling grooves, a sealing ring groove, a three-way hole and a handle; the driving mechanism is composed of a driving seat, an air cylinder, a floating nut, an air cylinder rod, a nut, a Y-shaped cam, a fisheye connector, a right bearing seat, a left bearing seat, a bearing blocking piece, a coupler, an upper coupling pin and a lower coupling pin. The axis of the coupler, the axis of the valve element of the rotary valve mechanism and the axis of the left through hole and the right through hole of the cavity are located on the same line. The rotary valve of the device is good in concentricity, free of blockage, simple in structure, low in cost and more convenient to disassemble, wash and assemble.

Description

TECHNICAL FIELD

[0001] The utility model relates to a valve body device for piston pump needed to be matched with rotary valve occasions in baking, cake production and other industries, in particular to a valve body device with rotary valve shaft center positioning. BACKGROUND

[0002] The structure of piston type filling machine matched with rotary valve at present stage generally has cylinder or actuator (rotary cylinder) as drive, and no valve core shaft center positioning structure when valve core rotates in valve body no matter cylinder drive or actuator drive structure.

[0003] 1) when cylinder drives, valve core rotation is eccentric point on one side of valve core as fulcrum driven by cylinder, which can make valve core shaft center deviate and cause valve core to be easily stuck;

[0004] 2) when actuator drives, although drive fulcrum is at valve core shaft center, although valve core eccentric sticking probability is relatively less, but strictly speaking, there is still no valve core shaft center positioning structure, in addition, actuator is expensive, short in service life and inconvenient to replace, which becomes a common problem. CONTENT OF UTILITY MODEL

[0005] The utility model aims at providing a rotary valve device with valve core shaft center positioning for food processing technical field, which can solve the problem of easy sticking caused by poor valve core shaft center positioning.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a valve body device with rotary valve axis positioning, which is used in conjunction with a main machine, wherein the device comprises a rotary valve mechanism and a drive mechanism; the rotary valve mechanism is composed of a positioning seat, a cavity, and a valve core; the positioning seat is provided with a left positioning plate, a right positioning plate, a left positioning pin, a right positioning pin, a left pin hole, a right wire hole, and a positioning pin bolt; the cavity is provided with a left positioning groove, a right positioning groove, left and right cavity through-holes, a through-pin hole, a positioning card, a shaft sleeve, a front flange, an upper flange, and a pump body connection hole; the valve core is provided with upper and lower coupling grooves, a sealing ring groove, a three-way hole, and a handle; the drive mechanism is composed of a drive seat, a cylinder, a floating nut, a cylinder rod, a nut, a Y-shaped cam, a fisheye joint, a right bearing seat, a left bearing seat, a bearing baffle, a coupling The rotary valve mechanism is composed of a device, an upper and lower coupling pins; the rotary valve mechanism is arranged close to the left bearing seat of the driving mechanism, the left bearing seat and the right bearing seat are respectively arranged on both sides of the driving seat, the Y-shaped cam is sandwiched between the left bearing seat and the right bearing seat, and the coupling passes through the left bearing seat, the Y-shaped cam and the right bearing seat in sequence; the coupling is provided with upper and lower coupling pins at one end close to the rotary valve mechanism; the valve core of the rotary valve mechanism is inserted into the cavity of the rotary valve mechanism from the left and right through-holes of the cavity, and the upper and lower coupling grooves provided on the right end edge of the valve core cooperate with the upper and lower coupling pins on the coupling to lock the position; in the device, the axis center line of the coupling is in line with the axis center line of the valve core of the rotary valve mechanism and the axis center lines of the left and right through-holes of the cavity; the cavity of the rotary valve mechanism is positioned by the positioning seat to maintain concentricity with the coupling.

[0007] The above-mentioned valve body device with rotary valve axis positioning, wherein the rotary valve mechanism and the driving mechanism are fixed on the same plane of the machine base of the main machine equipped with the device; the driving mechanism is fixed to the machine base of the main machine by the driving seat, the positioning seat of the rotary valve mechanism is fixed to the machine base of the main machine, and the cavity of the rotary valve mechanism is positioned by the positioning seat.

[0008] The above-mentioned valve body device with rotary valve axis positioning, wherein the driving mechanism, the driving seat is in the shape of a long strip, the left bearing seat and the right bearing seat are fixed on both sides of the driving seat along the length direction of the driving seat, and the left bearing seat and the right bearing seat are respectively provided with bearings at the front and rear. The coupling passes through the front bearing of the left bearing seat, the shaft hole of the Y-shaped cam, and the front bearing of the right bearing seat to form an assembly relationship, and the position of the Y-shaped cam is the front of the driving seat.

[0009] The above-mentioned valve body device with rotary valve axis positioning, wherein the drive seat is provided with a fisheye joint at the front, the fisheye at the front end is located in front of the Y-shaped cam and is connected to the Y-shaped cam, and the joint at the rear end is connected to the cylinder rod after the Y-shaped cam; the cylinder arranged at the rear end of the cylinder rod is fixed by a floating nut, and bearing positions are provided at both ends of the floating nut, which are respectively assembled on the bearings at the rear of the left bearing seat and the right bearing seat.

[0010] The above-mentioned valve body device with rotary valve axis positioning, wherein the cylinder rod is connected to the fisheye joint through a thread set at the front end and locked by a nut; the fisheye joint is connected to the Y-shaped cam through a shaft and sleeve method and is clamped by a retaining ring, and shaft sleeve structures are provided on both sides of the Y-shaped cam; the shaft hole of the Y-shaped cam is connected to the shaft flat key of the coupling; a bearing block is provided between the Y-shaped cam and the left bearing seat, and the bearing block is fixed to the corresponding wire hole of the left bearing seat by screws.

[0011] The above-mentioned valve body device with rotary valve axis positioning, wherein the rotary valve mechanism, the left positioning plate and the right positioning plate of the positioning seat are arranged parallel to the length direction of the driving seat, and are respectively fixed on the base of the main machine; the rear ends of the left positioning plate and the right positioning plate are provided with relative left positioning pins and right positioning pins, and the front ends of the left positioning plate and the right positioning plate are symmetrically provided with left pin holes and right thread holes; the rotary valve mechanism cavity is located between the left positioning plate and the right positioning plate, and the two bottom corners of the bottom of the rear end of the cavity are respectively provided with left positioning grooves and right positioning grooves that fit with the left positioning pin and the right positioning pin, and the top corner of the front bottom of the cavity is provided with a through pin hole that passes through both sides of the cavity from the outside to the inside, and the positioning pin bolt passes through the left pin hole, the through pin hole and the right thread hole in turn, and the cavity is positioned after tightening.

[0012] The above-mentioned valve body device with rotary valve axis positioning, wherein the rotary valve mechanism, the main body of the cavity is cubical, the front of the cavity is provided with a front flange, the top of the cavity is provided with an upper flange, the rear of the cavity is provided with a pump body connection hole, and the side of the cavity is provided with left and right cavity through-holes; the positioning card is located on the outer side of the cavity where the left and right through-holes are located, at the other front top corner opposite to the position of the through-pin hole, the positioning card is fixed to the cavity by an axis pin, and a shaft sleeve is provided between the outer side of the cavity and the positioning card; the positioning card is flipped over to partially block the left and right through-holes of the cavity.

[0013] The above-mentioned valve body device with rotary valve axis positioning, wherein the rotary valve mechanism, the main body of the valve core is cylindrical, and a handle is provided in the center of the left end face of the valve core; a three-way hole is provided on the side wall of the valve core, and the third hole is located at the midpoint of the valve core side wall between the first hole and the second hole, and the angle between the center of the third hole and the center of the first hole and the second hole on both sides is 90°; the right end edge of the valve core is provided with upper and lower coupling grooves in the direction opposite to the third hole; a circle of sealing ring grooves is provided on the outer side walls of the left and right ends of the valve core.

[0014] The above-mentioned valve body device with rotary valve axis positioning, wherein the valve core is installed with a sealing ring in the sealing ring groove, and when the positioning card is flipped up, the upper and lower coupling grooves at the right end of the valve core are aligned with the upper and lower coupling pins arranged on the top of the outer side of the coupling, and the valve core is inserted into the left and right through-holes of the cavity from the direction of the right end opening, and the upper and lower coupling grooves of the valve core are locked with the upper and lower coupling pins of the coupling; after the positioning card is flipped down, it clamps the outward left end face of the valve core.

[0015] The above-mentioned valve body device with rotary valve axis positioning, wherein the valve core, the axis line and the axis line of the left and right perforations of the cavity and the axis line of the coupling are on the same line to maintain the concentricity of the device; the concentricity of the coupling is maintained by the left bearing seat and the right bearing seat.

[0016] The valve body device with rotary valve axis positioning provided by the utility model has the following advantages:

[0017] The device has the following effects after improvement: 1) the existing eccentric drive of the valve core is changed to a concentric drive, which greatly reduces the chance of the valve core getting stuck, reduces noise, and runs more smoothly; 2) the connection between the valve core and the drive mechanism coupling is more convenient for disassembly and cleaning; 3) there is a handle at the left end of the valve core, which is more convenient for disassembly and assembly; 4) the left end of the valve core has a flip-up positioning card, which has good positioning effect and is easy to disassemble and clean; 5) the positioning seat has a simple structure, good positioning effect, and no tools are required for disassembly and assembly; 6) the coupling and the cylinder connection floating nut are all positioned by bearings, which ensures concentricity, smooth operation without jamming, less wear, and longer service life; 7) the friction between the drive cam and the fisheye joint sleeve is reduced, and the service life is extended; 8) the drive axis is concentric with the valve body cavity axis and the valve core axis. With the concentricity guaranteed, the valve core jam will naturally disappear, the operation resistance will be small, and the operation will be smoother.

[0018] The biggest feature of this device is that the rotary valve has good concentricity, no jamming, simple structure, low cost, and is more convenient to disassemble and clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an overall schematic diagram of the valve body device with rotary valve axis positioning of the utility model.

[0020] Figure 2 This is a schematic diagram of the rotary valve mechanism of the valve body device with rotary valve axis positioning according to the present invention.

[0021] Figure 3 It is a schematic diagram of a positioning seat of a valve body device with rotary valve axis positioning according to the present invention.

[0022] Figure 4 This is a schematic diagram of the cavity of the valve body device with rotary valve axis positioning of the present invention.

[0023] Figure 5 This is a schematic diagram of a valve core of a valve body device with rotary valve axis positioning according to the present invention.

[0024] Figure 6 It is a schematic diagram of the driving mechanism of the valve body device with rotary valve axis positioning of the utility model.

[0025] Figure 7 This is a schematic diagram of the assembly relationship of the valve body device with rotary valve axis positioning of the utility model.

[0026] Among them: 1. Rotary valve mechanism; 11. Positioning seat; 111. Left positioning plate; 112. Right positioning plate; 113. Left positioning pin; 114. Right positioning pin; 115. Left pin hole; 116. Right thread hole; 117. Positioning pin bolt; 12. Cavity; 121. Left positioning groove; 122. Right positioning groove; 123. Left and right through holes in the cavity; 124. Through pin hole; 125. Positioning card; 126. Bushing; 127. Front flange; 128. Upper method Lan; 129, pump body connecting hole; 13, valve core; 131, upper and lower coupling grooves; 132, sealing ring groove; 133, three-way hole; 134, handle; 2, driving mechanism; 21, driving seat; 22, cylinder; 23, floating nut; 24, cylinder rod; 25, nut; 26, Y-type cam; 27, fisheye joint; 28, right bearing seat; 29, left bearing seat; 210, bearing baffle; 211, coupling; 212, upper and lower coupling pins. DETAILED DESCRIPTION

[0027] The specific implementation of the present invention will be further described below with reference to the accompanying drawings.

[0028] The valve body device with rotary valve axis positioning provided by the present invention is used in conjunction with the main unit of a piston pump. The device comprises a rotary valve mechanism 1 and a drive mechanism 2. Figure 1 shown.

[0029] Preferably, the rotary valve mechanism 1 is composed of a positioning seat 11, a cavity 12, and a valve core 13. Figure 2 shown.

[0030] The positioning seat 11 is provided with a left positioning plate 111, a right positioning plate 112, a left positioning pin 113, a right positioning pin 114, a left pin hole 115, a right thread hole 116, and a positioning pin bolt 117. Figure 3 shown.

[0031] The cavity 12 is provided with a left positioning groove 121, a right positioning groove 122, left and right cavity through holes 123, a through pin hole 124, a positioning card 125, a shaft sleeve 126, a front flange 127, an upper flange 128, and a pump body connection hole 129. Figure 4 shown.

[0032] The valve core 13 is provided with upper and lower coupling grooves 131, a sealing ring groove 132, a three-way hole 133, and a handle 134. Figure 5 shown.

[0033] The driving mechanism 2 consists of a driving seat 21, a cylinder 22, a floating nut 23, a cylinder rod 24, a nut 25, a Y-shaped cam 26, a fisheye joint 27, a right bearing seat 28, a left bearing seat 29, a bearing stopper 210, a coupling 211, and upper and lower coupling pins 212. Figure 6 shown.

[0034] The rotary valve mechanism 1 is arranged close to the left bearing seat 29 of the driving mechanism 2. The left bearing seat 29 and the right bearing seat 28 are respectively arranged on both sides of the driving seat 21. The Y-shaped cam 26 is sandwiched between the left bearing seat 29 and the right bearing seat 28. The coupling 211 passes through the left bearing seat 29, the Y-shaped cam 26, and the right bearing seat 28 in sequence. The coupling 211 is provided with upper and lower coupling pins 212 at one end close to the rotary valve mechanism 1. The valve core 13 of the rotary valve mechanism 1 is inserted from the left side of the cavity. The right through-hole 123 is inserted into the cavity 12 of the rotary valve mechanism 1. The upper and lower coupling grooves 131 provided on the right edge of the valve core 13 cooperate with the upper and lower coupling pins 212 on the coupling 211 to lock in place. In this device, the axis of the coupling 211 is aligned with the axis of the valve core 13 of the rotary valve mechanism 1 and the axis of the left and right through-holes 123 of the cavity. The cavity 12 of the rotary valve mechanism 1 is positioned by the positioning seat 11 to maintain concentricity with the coupling 211. Figure 7 shown.

[0035] The rotary valve mechanism 1 and the driving mechanism 2 are both fixed on the same plane of the base of the main machine equipped with the device; the driving mechanism 2 is fixed to the base of the main machine by the driving seat 21, and the positioning seat 11 of the rotary valve mechanism 1 is fixed to the base of the main machine, and the cavity 12 of the rotary valve mechanism 1 is positioned by the positioning seat 11.

[0036] The driving seat 21 of the driving mechanism 2 is in the shape of a long strip, and the bottom surface is fixed on the base of the main machine. The left bearing seat 29 and the right bearing seat 28 are fixed on both sides of the driving seat 21 along the length direction of the driving seat 21. The left bearing seat 29 and the right bearing seat 28 are respectively provided with bearings at the front and rear. The coupling 211 passes through the front bearing of the left bearing seat 29, the axial hole of the Y-shaped cam 26, and the front bearing of the right bearing seat 28 to form an assembly relationship. The position of the Y-shaped cam 26 is the front of the driving seat 21.

[0037] A fisheye joint 27 is provided at the front of the drive seat 21, the fisheye at the front end of which is located in front of the Y-shaped cam 26 and connected to the Y-shaped cam 26, and the joint at the rear end is connected to the cylinder rod 24 behind the Y-shaped cam 26; the cylinder 22 arranged at the rear end of the cylinder rod 24 is fixed by a floating nut 23, and bearing positions are provided at both ends of the floating nut 23, which are respectively assembled on the bearings at the rear of the left bearing seat 29 and the right bearing seat 28.

[0038] The cylinder rod 24 is connected to the fisheye joint 27 through a thread set at the front end and is locked by a nut 25; the fisheye joint 27 is connected to the Y-shaped cam 26 through a shaft and sleeve method and is clamped by a retaining ring, and a shaft sleeve structure is provided on both sides of the Y-shaped cam 26; the shaft hole of the Y-shaped cam 26 is connected to the shaft flat key of the coupling 211; a bearing block 210 is provided between the Y-shaped cam 26 and the left bearing seat 29, and the bearing block 210 is fixed to the corresponding thread hole of the left bearing seat 29 by screws.

[0039] The left positioning plate 111 and the right positioning plate 112 of the positioning seat 11 of the rotary valve mechanism 1 are arranged parallel to the length direction of the driving seat 21 and are fixed to the base of the host respectively; the rear ends of the left positioning plate 111 and the right positioning plate 112 are provided with a left positioning pin 113 and a right positioning pin 114 relative to each other, and the front ends of the left positioning plate 111 and the right positioning plate 112 are symmetrically provided with a left pin hole 115 and a right thread hole 116; the cavity 12 of the rotary valve mechanism 1 is located between the left positioning plate 111 and the right positioning plate 112. Between the right positioning plate 112, the rear end of the cavity 12 is provided with a left positioning groove 121 and a right positioning groove 122 at the two bottom corners close to the base plane of the main machine, which respectively fit with the left positioning pin 113 and the right positioning pin 114. The top corner of the front of the cavity 12 is provided with a through pin hole 124 that passes through both sides of the cavity 12 from the outside to the inside. The positioning pin bolt 117 passes through the left pin hole 115, the through pin hole 124, and the right thread hole 116 in sequence, and is tightened to position the cavity 12. The side of the cavity 12 away from the drive mechanism 2 is the outer side.

[0040] The main body of the cavity 12 of the rotary valve mechanism 1 is cubic in shape; a front flange 127 is provided in front of the cavity 12, and an upper flange 128 is provided above the cavity 12, and openings are respectively provided on the cavity 12 within the front flange 127 and the upper flange 128; a pump body connecting hole 129 is provided at the rear of the cavity 12, which is connected to the pump body of the piston pump; left and right cavity through-holes 123 are provided on the side of the cavity 12; a positioning card 125 is located on the outer side of the cavity 12 where the left and right cavity through-holes 123 are located, at the other front top corner opposite to the through pin hole 124, the positioning card 125 is fixed to the cavity 12 by an axis nail, and a shaft sleeve 126 is provided between the outer side of the cavity 12 and the positioning card 125; the positioning card 125 is flipped over to partially block the left and right cavity through-holes 123.

[0041] The main body of the valve core 13 of the rotary valve mechanism 1 is cylindrical, and a handle 134 is provided in the center of the left end face of the valve core 13; a three-way hole 133 is provided on the side wall of the valve core 13, wherein the third hole is located at the midpoint of the side wall of the valve core 13 between the first hole and the second hole, and the angle between the center of the third hole and the center of the first hole and the second hole on both sides is 90 degrees; that is, the line between the centers of the first hole and the second hole constitutes the diameter of the cylindrical cross section in which it is located, and is perpendicular to the axis of the valve core 13, and is also perpendicular to the center of the third hole. and are perpendicular to the line connecting the axial points of the valve core 13 on the cylindrical cross-section on which it is located; an upper and lower coupling groove 131 is provided on the right end edge of the valve core 13 in a direction opposite to the third hole; that is, the centers of the upper and lower coupling grooves 131, the center of the third hole and the axial center line of the valve core 13 are located in the same plane, and divide the cylindrical side wall of the valve core 13 body into two halves, and the line connecting the centers of the first hole and the second hole is perpendicular to the plane; a circle of sealing ring groove 132 is provided on the outer side walls of the left and right ends of the valve core 13.

[0042] The valve core 13 is installed with a sealing ring in the sealing ring groove 132. When the positioning card 125 is turned up, the handle 134 is held to align the upper and lower coupling grooves 131 at the right end of the valve core 13 with the upper and lower coupling pins 212 arranged at the top outside the coupling 211, whose protruding direction is perpendicular to the axis of the coupling 211; when the cylinder 22 is in the pushed-out state, the cylinder rod 24 pushes toward the front end of the drive seat 21, and the protruding directions of the upper and lower coupling pins 212 are simultaneously perpendicular to the plane where the drive seat 21 is located, that is, the base plane of the main engine; the valve core 13 is inserted into the left and right through-holes 123 of the cavity from the direction of the right end opening, and the upper and lower coupling grooves 131 of the valve core 13 are locked with the upper and lower coupling pins 212 of the coupling 211, and the bottom edge of the valve core 13 is close to the outer side surface of the left bearing seat 29; after the positioning card 125 is turned downward, it is clamped to the outward left end face of the valve core 13.

[0043] The axial centerline of the valve core 13, the axial centerlines of the left and right through-holes 123 of the cavity, and the axial centerline of the coupling 211 are aligned to maintain the concentricity of the device; the concentricity of the coupling 211 is maintained by the left bearing seat 29 and the right bearing seat 28.

[0044] The valve body device with rotary valve axis positioning provided by the present invention will be further described below in conjunction with the embodiments.

[0045] Example 1

[0046] A valve body device with rotary valve axis positioning is divided into two parts: a rotary valve mechanism 1 and a driving mechanism 2.

[0047] The rotary valve mechanism 1 is composed of a positioning seat 11 , a cavity 12 , and a valve core 13 .

[0048] The positioning seat 11 is composed of a left positioning plate 111, a right positioning plate 112, a left positioning pin 113, a right positioning pin 114, a left pin hole 115, a right threaded hole 116, and a positioning pin bolt 117. The positioning seat 11 is fixed on the machine base (the base of the main machine).

[0049] The cavity 12 consists of a left positioning groove 121, a right positioning groove 122, left and right cavity through-holes 123, a through-pin hole 124, a positioning card 125, a shaft sleeve 126, a front flange 127, an upper flange 128, and a pump body connection hole 129. The positioning card 125 is fixed to the cavity 12 by a pin to prevent the valve core 13 from moving left and right.

[0050] The valve core 13 is composed of an upper and lower coupling groove 131, a sealing ring groove 132, a three-way hole 133, and a handle 134. The three-way hole 133 of the valve core 13 is three holes arranged on the side wall of the valve core 13, constituting three-way communication of front, back and bottom.

[0051] The driving mechanism 2 is composed of a driving seat 21, a cylinder 22, a floating nut 23, a cylinder rod 24, a nut 25, a Y-shaped cam 26, a fisheye joint 27, a right bearing seat 28, a left bearing seat 29, a bearing block 210, a coupling 211, and upper and lower coupling pins 212.

[0052] Example 2

[0053] A valve body device with rotary valve axis positioning, the assembly relationship of each component is as follows:

[0054] The rotary valve mechanism 1 and the driving mechanism 2 of the device are fixed on a base on the same plane of the main machine.

[0055] The driving seat 21 is fixed on the main engine seat, and the left bearing seat 29 and the right bearing seat 28 are fixed on the driving seat.

[0056] The cylinder 22 is fixed by a floating nut 23 , and bearings are provided at both ends of the floating nut 23 for assembly on bearings at the rear of the left bearing seat 29 and the right bearing seat 28 .

[0057] The threaded front end of the cylinder rod 24 is connected to the fisheye joint 27 and locked by the nut 25.

[0058] The fisheye joint 27 is connected to the Y-shaped cam 26 through a shaft and sleeve manner and is locked by a retaining spring. Shaft and sleeve structures are provided on both sides of the Y-shaped cam 26.

[0059] The coupling 211 passes through the front bearing of the left bearing seat 29, the shaft hole of the Y-shaped cam 26, and the front bearing of the right bearing seat 28 to form an assembly relationship.

[0060] The shaft hole of the Y-shaped cam 26 is connected to the flat key provided on the shaft of the coupling 211.

[0061] Fix the bearing stopper 210 to the corresponding thread holes of the left bearing seat 29 with three screws to prevent the outer ring of the bearing from moving.

[0062] The left end of the coupling 211 is provided with upper and lower coupling pins 212 .

[0063] The positioning seat 11 is fixed on the main machine base to ensure the concentricity of the cavity 12 and the coupling 211 after positioning.

[0064] Push the cavity 12 from front to back into the left and right pressure plates of the positioning seat 11, that is, between the left positioning plate 111 and the right positioning plate 112, so that the left positioning groove 121 and the right positioning groove 122 on the left and right sides of the cavity fit with the left positioning pin 113 and the right positioning pin 114 on the left and right sides of the positioning seat 11, insert the positioning pin bolt 117 through the left pin hole 115, through the pin hole 124, and the right thread hole 116, tighten the positioning pin bolt 117 to complete the positioning of the cavity 12.

[0065] Flip the positioning card 125 forward, install the sealing ring in the sealing ring groove 132 around the valve core 13, hold the handle 134 to align the upper and lower coupling grooves 131 of the valve core 13 with the upper and lower coupling pins 212 of the coupling 211, and insert the valve core 13 so that the upper and lower coupling grooves 131 of the valve core 13 are locked with the upper and lower coupling pins 212 of the coupling 211.

[0066] The positioning card 125 is turned back to block the left end face of the valve core 13, thus preventing the valve core 13 from moving to the left. At this point, the entire device is assembled.

[0067] The axis of the coupling 211 of the device is aligned with the axis of the valve core 13 of the rotary valve mechanism 1 and the axis of the left and right through-holes 123 of the cavity, thereby ensuring the concentricity of the device.

[0068] The concentricity of the coupling 211 is ensured by the left bearing seat 29 and the right bearing seat 28.

[0069] Example 3

[0070] A valve body device with rotary valve axis positioning, the working process when in use is as follows:

[0071] When the cylinder 22 is in the pushed state, the first and second holes of the three-way hole 133 of the valve core 13 are connected to the front flange 127 and the pump body connecting hole 129, and the third hole located below is closed by the cavity 12. When the piston pump sucks the material, the cylinder rod 24 is retracted from the front to the back, driving the Y-shaped cam 26, driving the coupling 211, and the coupling 211 is connected to the slot of the valve core 13, so that the valve core 13 rotates 90 degrees counterclockwise when viewed from left to right. At this time, the first hole of the three-way hole 133 of the valve core 13 is located at the bottom and is blocked by the cavity 12, and the second hole at the top is connected to the upper method of the cavity 12. The flange 128 is connected, the third hole at the rear is connected to the pump body connecting hole 129, the channel of the cavity front flange 127 is closed, and the material enters smoothly from the upper flange 128 of the cavity 12, and is sucked into the pump body from the pump body connecting hole 129 through the valve core 13 channel; when the piston pump discharges material, the cylinder rod 24 is pushed forward from the back to the front, causing the valve core 13 to rotate 90° in the opposite direction of the material suction. At this time, the upper flange 128 of the cavity 12 is closed by the valve core 13, and the front flange 127 of the cavity 12 is connected to the pump body connecting hole 129, so that the material in the pump body is discharged from the front flange 127 of the cavity 12.

[0072] This utility model provides a valve body device with rotary valve axis positioning, consisting of two parts: a rotary valve mechanism and a drive mechanism. The core innovations of this device lie in: 1) a structure in which the concentricity of the coupling drive end is determined by bearing blocks on both sides; 2) a coupling cam drive; 3) a Y-shaped cam connected to the fisheye cylinder joint sleeve; 4) a floating nut fixing method for the drive cylinder, with bearing blocks on both sides positioned; 5) a coupling method for connecting the coupling to the valve core slot; 6) an operating handle on the left side of the valve core; and 7) a flip-type positioning mechanism for the left side of the valve core.

[0073] The device of the present invention can effectively solve the problem of easy jamming of the valve core caused by poor positioning of the valve core axis. It adopts a structure in which the drive axis is concentric with the valve body cavity axis and the valve core axis. The concentricity is good and the valve core jamming phenomenon disappears, the operating resistance is small, and the operation is smoother. At the same time, it also has the characteristics of simple structure, reduced cost, and easier disassembly and cleaning.

[0074] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as limiting the present invention. After reading the above description, various modifications and alternatives to the present invention will be readily apparent to those skilled in the art. Therefore, the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. A valve body device with rotary valve axis positioning, used in conjunction with a main engine, characterized in that: The device comprises a rotary valve mechanism and a driving mechanism; The rotary valve mechanism is composed of a positioning seat, a cavity, and a valve core; the positioning seat is provided with a left positioning plate, a right positioning plate, a left positioning pin, a right positioning pin, a left pin hole, a right thread hole, and a positioning pin bolt; the cavity is provided with a left positioning groove, a right positioning groove, left and right cavity through holes, a through pin hole, a positioning card, a shaft sleeve, a front flange, an upper flange, and a pump body connection hole; the valve core is provided with upper and lower coupling grooves, a sealing ring groove, a three-way hole, and a handle; The driving mechanism is composed of a driving seat, a cylinder, a floating nut, a cylinder rod, a nut, a Y-shaped cam, a fisheye joint, a right bearing seat, a left bearing seat, a bearing stopper, a coupling, and upper and lower coupling pins; The rotary valve mechanism is arranged close to the left bearing seat of the drive mechanism, and the left bearing seat and the right bearing seat are respectively arranged on both sides of the drive seat, the Y-shaped cam is sandwiched between the left bearing seat and the right bearing seat, and the coupling passes through the left bearing seat, the Y-shaped cam, and the right bearing seat in sequence; the coupling is provided with upper and lower coupling pins at one end close to the rotary valve mechanism; the valve core of the rotary valve mechanism is inserted into the cavity of the rotary valve mechanism through the left and right through-holes of the cavity, and the upper and lower coupling grooves provided on the right end edge of the valve core cooperate with the upper and lower coupling pins on the coupling to lock in place; In the device, the axis of the coupling is aligned with the axis of the valve core of the rotary valve mechanism and the axis of the left and right holes of the cavity; the cavity of the rotary valve mechanism is positioned by the positioning seat to maintain concentricity with the coupling.

2. The valve body device with rotary valve axis positioning according to claim 1, characterized in that: The rotary valve mechanism and the driving mechanism are both fixed on the same plane of the base of the host machine equipped with the device; the driving mechanism is fixed to the base of the host machine by the driving base, the positioning base of the rotary valve mechanism is fixed to the base of the host machine, and the cavity of the rotary valve mechanism is positioned by the positioning base.

3. The valve body device with rotary valve axis positioning according to claim 2, characterized in that: The driving mechanism described herein is that the driving seat is in the shape of a long strip, and the left bearing seat and the right bearing seat are fixed on both sides of the driving seat along the length direction of the driving seat. The left bearing seat and the right bearing seat are respectively provided with bearings at the front and rear. The coupling passes through the front bearing of the left bearing seat, the shaft hole of the Y-shaped cam, and the front bearing of the right bearing seat to form an assembly relationship. The position of the Y-shaped cam is the front of the driving seat.

4. The valve body device with rotary valve axis positioning according to claim 3, characterized in that: The driving seat is provided with a fisheye joint at the front, the fisheye at the front end is located in front of the Y-shaped cam and connected to the Y-shaped cam, and the joint at the rear end is connected to the cylinder rod behind the Y-shaped cam; the cylinder arranged at the rear end of the cylinder rod is fixed by a floating nut, and bearing positions are provided at both ends of the floating nut, which are respectively assembled on the bearings at the rear of the left bearing seat and the right bearing seat.

5. The valve body device with rotary valve axis positioning according to claim 4, characterized in that: The cylinder rod is connected to the fisheye joint through a thread set at the front end and locked by a nut; the fisheye joint is connected to the Y-shaped cam through a shaft and sleeve method and is clamped by a retaining ring, and shaft sleeve structures are provided on both sides of the Y-shaped cam; the shaft hole of the Y-shaped cam is connected to the shaft flat key of the coupling; a bearing block is provided between the Y-shaped cam and the left bearing seat, and the bearing block is fixed to the corresponding thread hole of the left bearing seat by screws.

6. The valve body device with rotary valve axis positioning according to claim 2, characterized in that: The rotary valve mechanism described herein has the left and right positioning plates of the positioning seat arranged parallel to the length direction of the driving seat, and are fixed to the base of the main machine respectively; the rear ends of the left and right positioning plates are provided with relative left and right positioning pins, and the front ends of the left and right positioning plates are symmetrically provided with left pin holes and right thread holes; the rotary valve mechanism cavity is located between the left and right positioning plates, and the two bottom corners of the rear end of the cavity are respectively provided with left and right positioning grooves that fit with the left and right positioning pins, and the top corners in front of the cavity are provided with through pin holes that pass through both sides of the cavity from the outside to the inside, and the positioning pin bolts pass through the left pin hole, the through pin hole and the right thread hole in turn, and the cavity is positioned after tightening.

7. The valve body device with rotary valve axis positioning according to claim 6, characterized in that: The rotary valve mechanism has a main body of a cubic shape, a front flange in front of the cavity, an upper flange above the cavity, a pump body connection hole at the rear of the cavity, and left and right cavity through-holes on the side of the cavity; the positioning card is located on the outer side of the cavity where the left and right through-holes are located, at the other front top corner opposite to the through-pin hole, the positioning card is fixed to the cavity by an axle pin, and a shaft sleeve is provided between the outer side of the cavity and the positioning card; the positioning card is flipped over to partially block the left and right through-holes of the cavity.

8. The valve body device with rotary valve axis positioning according to claim 7, characterized in that: The rotary valve mechanism described herein has a main body of a valve core that is cylindrical, with a handle provided in the center of the left end face of the valve core; a three-way hole is provided on the side wall of the valve core, the third hole of which is located at the midpoint of the side wall of the valve core between the first hole and the second hole, and the angle between the center of the third hole and the centers of the first and second holes on both sides is 90°; upper and lower coupling grooves are provided on the right end edge of the valve core in a direction opposite to the third hole; a circle of sealing ring grooves is provided on the outer side walls of the left and right ends of the valve core.

9. The valve body device with rotary valve axis positioning according to claim 8, characterized in that: The valve core is installed with a sealing ring in the sealing ring groove. When the positioning card is flipped up, the upper and lower coupling grooves at the right end of the valve core are aligned with the upper and lower coupling pins arranged on the top of the outer side of the coupling. The valve core is inserted into the left and right through-holes of the cavity from the direction of the right end opening, and the upper and lower coupling grooves of the valve core are locked with the upper and lower coupling pins of the coupling; after the positioning card is flipped down, it clamps the outward left end face of the valve core.

10. The valve body device with rotary valve axis positioning according to claim 9, characterized in that: The valve core, the axis line and the axis line of the left and right perforations of the cavity and the axis line of the coupling are on the same line to maintain the concentricity of the device; the concentricity of the coupling is maintained by the left bearing seat and the right bearing seat.

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