JP2019181431A - Construction device for automatically painting something white - Google Patents

Abstract

To provide a construction device that automatically paints something white.SOLUTION: The construction device includes a stuffing box that is fixedly mounted on a machine base. At four corner bottom parts of the machine base are similarly arranged bath mats, and in the stuffing box is arranged a storage enclosure. At a top wall of the storage enclosure is arranged a first turning enclosure and also at the top wall of the storage enclosure is arranged an injection groove positioned at the left side of the first turning enclosure. At the bottom wall of the storage enclosure is arranged a discharging groove connected to the outside. At the bottom wall of the injection groove is arranged a percolation groove connected to the storage enclosure. At the right side of the first turning enclosure is arranged a second turning enclosure, and above the second turning enclosure is arranged a third turning enclosure extending to the left. Between the first turning enclosure and the third turning enclosure is arranged turning grooves to be connected to each other. On the bottom wall of the first turning enclosure is rotatably mounted a stirring shaft extending vertically. A lower end of the stirring shaft extends to the storage enclosure to be fixedly mounted with many stirring arms.SELECTED DRAWING: Figure 4

Description

The present invention relates to the field of construction work, and more particularly to a building apparatus that automatically paints white.

Walls are often painted white for building work, and it is necessary to stir the paint before painting white, and many traditional operations have been completed by human power.The labor intensity is high and the efficiency is low. The stirring direction is single, the mixing efficiency is low, the mixing quality is poor, and the effect of coating is lowered.

Chinese Patent Application No. 105178581

In response to the above lack of technology, the present invention provides a building device that automatically paints white.

The building apparatus for automatically painting white of the present invention includes a stuffing box fixedly attached to a machine base, a bath mat is simultaneously installed at the four corner bottoms of the machine base, and a housing is installed in the stuffing box, A first turning case is installed on the top wall of the housing case, and an injection groove located on the left side of the first turning case is installed on the top wall of the housing case, and the bottom wall of the housing case A discharge groove connected to the outside is installed on the bottom wall of the injection groove, a transmission groove connected to the housing case is installed, a second turning case is installed on the right side of the first turning case, and A third turning case extending to the left is installed on the upper side of the second turning case, a turning groove for connecting the first turning case between the third turning cases is installed, and the first turning case A stirring shaft extending vertically is attached to the bottom wall of the housing so that it can rotate. A lower end of the agitation shaft extends to the housing case and a number of agitation arms are fixedly attached; an upper end of the agitation shaft extends upward and is attached to the turning groove so as to be rotatable; An outer spline is installed with the shaft positioned in the first turning housing, and a first conical pulley and a second conical pulley are installed on the first turning housing to engage with the outer spline corresponding to the top and bottom. And a device for driving the first conical pulley and the second conical pulley to slide up and down is installed on the left end wall of the first turning housing, between the first turning housing and the second turning housing. A first turning shaft extending in the left-right direction is attached to be rotatable, a left end of the first turning shaft extends to the first turning housing, and a turning disc is fixedly attached. The first conical pulley and the second conical pulley A semi-conical tooth that engages and connects with the Lie is fixedly installed, the right end of the first turning shaft extends to the second turning housing, and a third conical pulley is fixedly attached, and the third turning A second turning shaft extending up and down is rotatably mounted between the housing and the second turning housing, and a lower end of the second turning shaft extends to the second turning housing to form the third conical shape. A fourth conical pulley that engages and connects with the pulley is fixedly attached, an upper end of the second turning shaft extends to the third turning housing, and a first transmission wheel is fixedly attached, and the turning groove A third transmission shaft extending upward is attached to the upper portion of the rotator so that the upper end of the third transmission shaft can rotate, and a power can be transmitted to a first motor fixedly attached to the top wall of the stuffing box. And the second transmission wheel is fixedly attached to the third turning shaft. And the first transmission wheel and the second transmission wheel are connected so that power can be transmitted through a belt conveyor, and a first inner spline groove is installed on the stirring shaft. A spline shaft is splined and engaged and attached, a second inner spline groove engaging with the spline shaft downward is installed on the third turning shaft, and a separating device is installed on the left end wall of the turning groove The

As another technical solution, the turning device includes a first sliding groove installed on the left end wall of the first turning housing and a dovetail groove located on the first sliding groove and connected to the first turning housing, A second sliding groove extending upward is installed on the left side of the upper end wall of the first sliding groove, and a first transmission housing is installed between the second sliding groove and the dovetail groove. A first sliding block is attached, and a screw lever extending vertically is engaged with and attached to the first sliding block, and a lower end of the screw lever is rotatably attached to a bottom wall of the first sliding groove. A sliding arm having an upper end connected to a second motor fixedly attached to a top wall of the first sliding groove so that power can be transmitted and fixedly connected to the first sliding block to the second sliding groove Is installed on the right end surface of the sliding arm. A dovetail that slides up and down is attached to the dovetail groove, a second rack is installed on the left end face of the dovetail block, and the first transmission housing is connected to the first rack and the first rack through a fourth turning shaft. Gears that engage and connect with the two racks are rotatably attached, and a first shift fork and a second shift fork are fixedly attached to the right ends of the first sliding block and the dove block, respectively.

As another technical solution, the separation device includes a third sliding groove that is installed on an upper end wall of the dovetail groove and extends upward, and a second transmission housing that is connected between the third sliding groove and the turning groove is provided. A second sliding block fixedly connected to the dovetail in the upper and lower directions is installed in the third sliding groove, and a connecting plate extending in the left and right direction is attached to the second transmission housing in a sliding manner; The left end of the plate is fixedly connected to the second sliding block, the right end extends into the turning groove and the turning set is fixedly attached, and the turning set is fitted to the spline shaft through a bearing.

As another technical solution, a first control valve and a second control valve are attached to the transmission housing and the discharge groove, respectively.

As another technical solution, a sloped surface connected to the discharge groove is installed on the bottom wall of the housing case.

The beneficial effect of the present invention is that when the present invention is in an initial state, the first sliding block cancels the upper end wall of the first sliding groove, the second conical pulley meshes with the half-conical teeth, and the ant The block offsets the bottom wall of the dovetail groove, and the spline shaft is disengaged from the second inner spline groove. At this time, the second conical pulley is positioned on the rotation trajectory of the semiconical tooth, thereby A conical pulley meshes with the semi-conical teeth when the turning disc rotates.

When using, close the second control valve, open the first control valve, then put paint into the injection groove, then close the first control valve and start the first motor, The first motor drives and rotates the second transmission wheel through the third turning shaft, the second transmission wheel drives and rotates the second turning shaft through the belt conveyor, and the second turning shaft. Drives and rotates the first turning shaft through the fourth conical pulley, the first turning shaft drives and rotates the turning disk, and the semi-conical teeth rotate the second conical pulley. Sometimes the second conical pulley is separated from the first conical pulley and engaged with the first conical pulley, while the turning disk is continuously rotated, the stirring shaft is driven to reverse the direction, and the stirring arm is moved in the housing. Painting Stir the mixture.

When agitating in one direction, the second motor is activated, the second motor drives the first sliding block through the screw lever and slides down, and the first sliding block slides down when the first sliding block slides down. The second conical pulley is driven through one shift fork to slide down and away from the semi-conical teeth, and when the first sliding block slides down, it slides down in conjunction with the sliding arm, and the sliding When the arm slides down, it drives the dovetail through the gear and slides up, thereby driving the first conical pulley through the shift fork and away from the rotational trajectory of the semi-conical teeth, the half-cone The teeth do not act on the first conical pulley and the second conical pulley, and when the dovetail slides up, the second sliding block And the connecting plate slides up in conjunction with the spline shaft through the turning set and extends into the second inner spline groove, and the third turning shaft When rotating, the agitation shaft is driven and rotated to achieve unidirectional stirring.

The structure of this device is simple, convenient to use, can switch between unidirectional stirring and bidirectional stirring, and can be adjusted freely as needed, improving the stirring efficiency and quality of the paint, and the effect of painting Greatly increase.

The beneficial effect of the present invention is that when the present invention is in an initial state, the first sliding block cancels the upper end wall of the first sliding groove, the second conical pulley meshes with the half-conical teeth, and the ant The block offsets the bottom wall of the dovetail groove, and the spline shaft is disengaged from the second inner spline groove. At this time, the second conical pulley is positioned on the rotation trajectory of the semiconical tooth, thereby A conical pulley meshes with the semi-conical teeth when the turning disc rotates.

When using, close the second control valve, open the first control valve, then put paint into the injection groove, then close the first control valve and start the first motor, The first motor drives and rotates the second transmission wheel through the third turning shaft, the second transmission wheel drives and rotates the second turning shaft through the belt conveyor, and the second turning shaft. Drives and rotates the first turning shaft through the fourth conical pulley, the first turning shaft drives and rotates the turning disk, and the semi-conical teeth rotate the second conical pulley. Sometimes the second conical pulley is separated from the first conical pulley and engaged with the first conical pulley, while the turning disk is continuously rotated, the stirring shaft is driven to reverse the direction, and the stirring arm is moved in the housing. Painting Stir the mixture.

When agitating in one direction, the second motor is activated, the second motor drives the first sliding block through the screw lever and slides down, and the first sliding block slides down when the first sliding block slides down. The second conical pulley is driven through one shift fork to slide down and away from the semi-conical teeth, and when the first sliding block slides down, it slides down in conjunction with the sliding arm, and the sliding When the arm slides down, it drives the dovetail through the gear and slides up, thereby driving the first conical pulley through the shift fork and away from the rotational trajectory of the semi-conical teeth, the half-cone The teeth do not act on the first conical pulley and the second conical pulley, and when the dovetail slides up, the second sliding block And the connecting plate slides up in conjunction with the spline shaft through the turning set and extends into the second inner spline groove, and the third turning shaft When rotating, the agitation shaft is driven and rotated to achieve unidirectional stirring.

The structure of this device is simple, convenient to use, can switch between unidirectional stirring and bidirectional stirring, and can be adjusted freely as needed, improving the stirring efficiency and quality of the paint, and the effect of painting Greatly increase.

In order to more clearly describe the technical solutions in the embodiments of the present invention and the existing technology, a brief introduction is given below to the drawings that need to be used in the description of the embodiments and the existing technology. It is understood that the drawings in the following description are just some embodiments of the present invention, and that other persons based on these drawings will be based on the assumption that no creative labor is paid to those skilled in the art. A drawing can be obtained.

FIG. 1 is a schematic structural diagram of a building apparatus that automatically paints white according to the present invention. FIG. 2 is an enlarged schematic view of the first turning housing of FIG. FIG. 3 is a left view of the turning disk of FIG. FIG. 4 is a structural schematic diagram in the direction of the arrow in FIG.

All features disclosed in this specification or all disclosed methods and steps in the process may be combined in any manner other than mutually exclusive features or steps.

All features disclosed in this specification may be replaced with other alternative features having equivalent or similar purposes unless otherwise specified. That is, unless otherwise noted, all features are just one example in a series of equivalent or similar features.

As shown in FIGS. 1 to 4, the automatic white coating building apparatus of the present invention includes a stuffing box 11 fixedly attached to the machine base 10, and a bath mat 101 is installed at the same time at the four corners of the machine base 10. A housing case 15 is installed in the stuffing box 11, a first turning case 57 is placed on the top wall of the housing case 15, and the first turning case is also placed on the top wall of the housing case 15. An injection groove 18 located on the left side of 57 is installed, a discharge groove 31 connected to the outside is installed on the bottom wall of the housing case 15, and a transmission wall connected to the housing case 15 on the bottom wall of the injection groove 18 Groove 17 is installed, a second turning casing 29 is installed on the right side of the first turning casing 57, a third turning casing 25 extending left is installed on the upper side of the second turning casing 29, and A turning groove 41 is provided between the first turning case 57 and the third turning case 25, and the first turning case 57 is provided. A stirring shaft 13 extending vertically is attached to the bottom wall so as to be rotatable. A lower end of the stirring shaft 13 extends to the housing 15 and a number of stirring arms 14 are fixedly attached. An upper end extends upward and is attached to the turning groove 41 so as to be rotatable. The stirring shaft 13 is located in the first turning case 57 and an outer spline is installed. Correspondingly, a first conical pulley 35 and a second conical pulley 56 that engage with the outer spline are installed, and the first conical pulley 35 and the second conical pulley are disposed on the left end wall of the first turning housing 57. A device for driving 56 to slide up and down is installed, and a first turning shaft 28 extending from side to side is rotatably attached between the first turning case 57 and the second turning case 29, The left end of one turning shaft 28 extends to the first turning housing 57 and the turning disk 22 is fixedly attached. And a semi-conical tooth 33 that engages and connects with the first conical pulley 35 and the second conical pulley 56 is fixedly installed on the left end surface of the diverting disk 22, A second turning shaft extending right and left between the third turning case 25 and the second turning case 29 with a right end extending to the second turning case 29 and a third conical pulley 30 fixedly attached. 26 is rotatably attached, and a lower end of the second turning shaft 26 extends to the second turning housing 29, and a fourth conical pulley 27 that engages and connects with the third conical pulley 30 is fixed. A third transmission shaft extending upward on the upper part of the turning groove 41, the upper end of the second turning shaft 26 extending to the third turning housing 25 and the first transmission wheel 24 being fixedly attached. 20 is rotatably mounted, and the upper end of the third transmission shaft 20 is the top of the stuffing box 11. The first transmission wheel 24 is connected to the first transmission wheel 24, and the second transmission wheel 19 is fixedly attached to the third turning shaft 20. The wheel 19 is connected so that power can be transmitted through the belt conveyor 23, and a first inner spline groove 34 is installed upward to the stirring shaft, and the spline shaft 36 is splined and engaged with the first inner spline groove 34. And a second inner spline groove 40 that engages with the spline shaft 36 downward is installed on the third turning shaft 20, and a separating device is installed on the left end wall of the turning groove 41. Drives the spline shaft 3 and is separated from the second inner spline groove 40.

Preferably, the turning device includes a first sliding groove 53 installed on a left end wall of the first turning casing 57 and a dovetail groove located on the first sliding groove 53 and connected to the first turning casing 57. A second sliding groove extending upward on the left side of the upper end wall of the first sliding groove 53 is installed, and a first transmission housing is installed between the second sliding groove and the dovetail groove, and the first sliding groove A first sliding block 51 that slides up and down is attached to 53, and a screw lever 52 that extends up and down is engaged and attached to the first sliding block 51, and the lower end of the screw lever 52 is the bottom wall of the first sliding groove 53 Is connected to a second motor 50 fixedly attached to the top wall of the first sliding groove 53 so that power can be transmitted, and the first sliding groove is connected to the first sliding groove 53. A sliding arm 46 fixedly connected to the sliding block 51 is attached by sliding, A first rack is installed on the end face, an ant block 47 that slides up and down is attached to the dovetail groove, a second rack is installed on the left end face of the ant block 47, and the first transmission housing is a fourth turning shaft 48. A gear 49 that engages and connects with the first rack and the second rack through is rotatably attached, and a first shift fork 54 and a second shift are respectively attached to the right ends of the first slide block 51 and the dove block 47. A fork 55 is fixedly attached, whereby the second conical pulley 56 and the first conical pulley 35 are rotated and slid up and down through the first shift fork 54 and the second shift fork 55, respectively.

Preferably, the separation device includes a third sliding groove 44 that is installed on the upper end wall of the dovetail groove and extends upward, and is connected between the third sliding groove 44 and the turning groove 41. A second sliding block 45 fixedly connected to the dovetail 47 is installed in the third sliding groove 44 up and down in the third sliding groove 44, and a connection plate 43 extending left and right is provided in the second transmission housing 42. Slidingly attached, the left end of the connection plate 43 is fixedly connected to the second sliding block 45, the right end extends to the turning groove 41, and the turning set 38 is fixedly attached. The spline shaft 36 is fitted.

Preferably, a first control valve 16 and a second control valve 32 are attached to the transmission casing 17 and the discharge groove 31, respectively, thereby controlling the opening and closing of the transmission casing 17 and the discharge groove 31 respectively.

Preferably, a slanting surface 12 connected to the discharge groove 31 is installed on the bottom wall of the housing 15 for convenient discharge.

In the initial state of the present invention, the first sliding block 51 offsets the upper end wall of the first sliding groove 53, the second conical pulley 56 meshes with the half-conical teeth 33, and the dovetail 47 is the initial state. The spline shaft 36 is disengaged from the second inner spline groove 40 at the same time as the bottom wall of the dovetail groove. A bi-conical pulley 35 meshes with the semi-conical teeth 33 when the turning disc 22 rotates.

When in use, the second control valve 32 is closed, the first control valve 16 is opened, and then the paint is put into the injection groove 18, and then the first control valve 16 is closed and the first motor is closed. 21, the first motor 21 drives and rotates the second transmission wheel 19 through the third turning shaft 20, and the second transmission wheel 19 drives the second turning shaft 26 through the belt conveyor 23. The second turning shaft 26 drives and rotates the first turning shaft 28 through the fourth conical pulley 27, and the first turning shaft 28 drives the turning disk 22 and rotates. The half-conical teeth 33 are separated from the second conical pulley 56 when the second conical pulley 56 rotates and mesh with the first conical pulley 35, and the turning disk 22 rotates all the time. Drive the agitation shaft 13 and turn it forward and backward. Agitating arm 14 stir the coating mixture in the accommodation housing 15.

When stirring in one direction, the second motor 50 is activated, the second motor 50 drives the first sliding block 51 through the screw lever 52 and slides down, and the first sliding block 51 moves down. When sliding, the second conical pulley 56 is driven through the first shift fork 54 to slide down, away from the half-conical teeth 33, and when the first sliding block 51 slides down, the sliding arm 46 When the sliding arm 46 slides down, the dovetail 47 is driven through the gear 49 and slides up, thereby driving the first conical pulley 35 through the shift fork. Apart from the rotation trajectory of the semi-conical tooth 33, the semi-conical tooth 33 does not act on the first conical pulley 35 and the second conical pulley 56, and the dovetail 47 is slurped upward. When the second sliding block 45 and the connecting plate 43 are slid upward, the connecting plate 43 slides upward in conjunction with the spline shaft 36 through the turning set 38 and the second inner spline. Extending to the groove 40, when the third turning shaft 20 rotates, the agitation shaft 13 is driven and rotated to achieve unidirectional stirring.

The beneficial effect of the present invention is that when the present invention is in an initial state, the first sliding block cancels the upper end wall of the first sliding groove, the second conical pulley meshes with the half-conical teeth, and the ant The block offsets the bottom wall of the dovetail groove, and the spline shaft is disengaged from the second inner spline groove. At this time, the second conical pulley is positioned on the rotation trajectory of the semiconical tooth, thereby A conical pulley meshes with the semi-conical teeth when the turning disc rotates.

When using, close the second control valve, open the first control valve, then put paint into the injection groove, then close the first control valve and start the first motor, The first motor drives and rotates the second transmission wheel through the third turning shaft, the second transmission wheel drives and rotates the second turning shaft through the belt conveyor, and the second turning shaft. Drives and rotates the first turning shaft through the fourth conical pulley, the first turning shaft drives and rotates the turning disk, and the semi-conical teeth rotate the second conical pulley. Sometimes the second conical pulley is separated from the first conical pulley and engaged with the first conical pulley, while the turning disk is continuously rotated, the stirring shaft is driven to reverse the direction, and the stirring arm is moved in the housing. Painting Stir the mixture.

When agitating in one direction, the second motor is activated, the second motor drives the first sliding block through the screw lever and slides down, and the first sliding block slides down when the first sliding block slides down. The second conical pulley is driven through one shift fork to slide down and away from the semi-conical teeth, and when the first sliding block slides down, it slides down in conjunction with the sliding arm, and the sliding When the arm slides down, it drives the dovetail through the gear and slides up, thereby driving the first conical pulley through the shift fork and away from the rotational trajectory of the semi-conical teeth, the half-cone The teeth do not act on the first conical pulley and the second conical pulley, and when the dovetail slides up, the second sliding block And the connecting plate slides up in conjunction with the spline shaft through the turning set and extends into the second inner spline groove, and the third turning shaft When rotating, the agitation shaft is driven and rotated to achieve unidirectional stirring.

The structure of this device is simple, convenient to use, can switch between unidirectional stirring and bidirectional stirring, and can be adjusted freely as needed, improving the stirring efficiency and quality of the paint, and the effect of painting Greatly increase.

The basic principle, main features and advantages of the present invention have been described and explained above. It should be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that the above-described embodiments and the specification are the principles of the present invention and do not depart from the significance and principles of the present invention. Therefore, there are various changes and improvements in the present invention, and these changes and improvements are within the protection scope of the present invention. The protection scope of the present invention is defined equivalent to the scope of the appended claims.

Claims (1)

A building device that automatically paints white, including a stuffing box that is fixedly attached to the machine base, a bath mat is simultaneously installed at the four corner bottoms of the machine base, and a housing is installed in the stuffing box, A first turning case is installed on the top wall of the housing case, an injection groove located on the left side of the first turning case is installed on the top wall of the housing case, and a bottom wall of the housing case is formed. A discharge groove connected to the outside is installed, a transmission groove connected to the receiving housing is installed on the bottom wall of the injection groove, a second turning housing is installed on the right side of the first turning housing, A third turning case extending to the left is installed on the upper side of the second turning case, and a turning groove is provided between the first turning case and the third turning case. A stirring shaft extending vertically is attached to the bottom wall of the body so that it can rotate. A lower end of the agitation shaft extends to the housing case, and a plurality of agitation arms are fixedly attached. An upper end of the agitation shaft extends upward and is rotatably attached to the turning groove. An outer spline is installed in the first turning housing, and a first conical pulley and a second conical pulley that are engaged with the outer spline corresponding to the first turning housing are installed on the first turning housing, A device for driving the first conical pulley and the second conical pulley to slide up and down is installed on the left end wall of the first turning housing, and the left and right between the first turning housing and the second turning housing. The extending first turning shaft is rotatably attached, the left end of the first turning shaft extends to the first turning housing, and the turning disc is fixedly attached, and the first turning shaft is attached to the left end surface of the turning disc. Conical pulley and said second conical pulley A semi-conical tooth that engages and connects with the first turning shaft, the right end of the first turning shaft extends to the second turning housing, and a third conical pulley is fixedly attached, and the third turning housing A second turning shaft extending vertically between the body and the second turning housing is rotatably attached, and a lower end of the second turning shaft extends to the second turning housing and the third conical pulley A fourth conical pulley that engages and connects with the second turning shaft, the upper end of the second turning shaft extends to the third turning housing, and the first transmission wheel is fixedly attached to the turning groove. A third transmission shaft extending upward is mounted on the top so as to be rotatable, and the upper end of the third transmission shaft is connected so as to be able to transmit power to a first motor fixedly mounted on the top wall of the stuffing box. And the second transmission wheel is fixedly attached to the third turning shaft. The first transmission wheel and the second transmission wheel are connected so as to be able to transmit power through a belt conveyor, and a first inner spline groove is installed on the stirring shaft. A spline shaft is splined and engaged and attached, a second inner spline groove that engages with the spline shaft downward is installed on the third turning shaft, and a separation device is installed on the left end wall of the turning groove, The turning device includes a first sliding groove installed on a left end wall of the first turning housing and a dovetail groove located on the first sliding groove and connected to the first turning housing, the first sliding groove A second sliding groove extending upward on the left side of the upper end wall of the first sliding housing, a first transmission housing is installed between the second sliding groove and the dovetail groove, and the first sliding sliding up and down in the first sliding groove A block is attached and extends up and down on the first sliding block. A screw lever is engaged and attached, a lower end of the screw lever is rotatably attached to the bottom wall of the first sliding groove, and an upper end is fixedly attached to the top wall of the first sliding groove. A sliding arm is connected to the second sliding groove so that power can be transmitted, and the first sliding block is fixedly connected to the second sliding groove, and a first rack is installed on the right end surface of the sliding arm. A dovetail that slides up and down is attached to the dovetail groove, a second rack is installed on the left end surface of the doveblock, and the first transmission housing is engaged with the first rack and the second rack through a fourth turning shaft. The gear to be connected is rotatably attached, and the first shift fork and the second shift fork are fixedly attached to the right ends of the first sliding block and the dove block, The separation device includes a third sliding groove that is installed on the upper end wall of the dovetail groove and extends upward, and a second transmission housing that is connected to the third sliding groove and the turning groove is installed, A second sliding block that is fixedly connected to the dovetail is attached to the sliding groove in the sliding groove, a connecting plate extending to the left and right is attached to the second transmissive housing, and a left end of the connecting plate is connected to the first end. It is fixedly connected to the two-sliding block, the right end extends into the turning groove and the turning set is fixedly attached, the turning set is fitted to the spline shaft through a bearing, and the transmission housing and the discharge groove are respectively A building apparatus for automatically painting in white, wherein a first control valve and a second control valve are attached, and a sloped surface connected to the discharge groove is installed on the bottom wall of the housing case.